src/test/java/PoliqarpPlusTreeTest.java

import static org.junit.Assert.*;

import java.io.IOException;
import java.util.ArrayList;

import org.junit.Test;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.collect.Lists;


import de.ids_mannheim.korap.query.serialize.QuerySerializer;
import de.ids_mannheim.korap.query.serialize.util.QueryException;

/**
 * Tests for JSON-LD serialization of PoliqarpPlus queries. 
 * @author Joachim Bingel (bingel@ids-mannheim.de)
 * @version 1.0
 */
public class PoliqarpPlusTreeTest {

	String query;
	ArrayList<JsonNode> operands;

	QuerySerializer qs = new QuerySerializer();
	ObjectMapper mapper = new ObjectMapper();
	JsonNode res;

	@Test
	public void testContext() throws QueryException, JsonProcessingException, IOException {
		query = "foo";
		String contextString = "http://ids-mannheim.de/ns/KorAP/json-ld/v0.2/context.jsonld";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(contextString, res.get("@context").asText());
	}

	@Test
	public void testSingleTokens() throws QueryException, JsonProcessingException, IOException {
		query = "[base=Mann]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:token", 		res.at("/query/@type").asText());
		assertEquals("Mann", 				res.at("/query/wrap/key").asText());
		assertEquals("lemma", 				res.at("/query/wrap/layer").asText());
		assertEquals("match:eq",			res.at("/query/wrap/match").asText());

		query = "[orth!=Frau]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:token", 		res.at("/query/@type").asText());
		assertEquals("Frau", 				res.at("/query/wrap/key").asText());
		assertEquals("orth", 				res.at("/query/wrap/layer").asText());
		assertEquals("match:ne",			res.at("/query/wrap/match").asText());

		query = "[p!=NN]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:token", 		res.at("/query/@type").asText());
		assertEquals("NN", 					res.at("/query/wrap/key").asText());
		assertEquals("p", 					res.at("/query/wrap/layer").asText());
		assertEquals("match:ne",			res.at("/query/wrap/match").asText());

		query = "[!p!=NN]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:token", 		res.at("/query/@type").asText());
		assertEquals("NN", 					res.at("/query/wrap/key").asText());
		assertEquals("p", 					res.at("/query/wrap/layer").asText());
		assertEquals("match:eq",			res.at("/query/wrap/match").asText());

		query = "[base=schland/x]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:token", 		res.at("/query/@type").asText());
		assertEquals(".*?schland.*?",		res.at("/query/wrap/key").asText());
		assertEquals("lemma", 				res.at("/query/wrap/layer").asText());
		assertEquals("type:regex",			res.at("/query/wrap/type").asText());
		assertEquals("match:eq",			res.at("/query/wrap/match").asText());
	}

	@Test
	public void testValue() throws QueryException, JsonProcessingException, IOException {
		query = "[mate/m=temp:pres]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:token", 		res.at("/query/@type").asText());
		assertEquals("korap:term",			res.at("/query/wrap/@type").asText());
		assertEquals("temp",				res.at("/query/wrap/key").asText());
		assertEquals("pres",				res.at("/query/wrap/value").asText());
		assertEquals("m",	 				res.at("/query/wrap/layer").asText());
		assertEquals("mate", 				res.at("/query/wrap/foundry").asText());
		assertEquals("match:eq",			res.at("/query/wrap/match").asText());
	}

	@Test
	public void testRegex() throws QueryException, JsonProcessingException, IOException {
		query = "[orth=\"M(a|ä)nn(er)?\"]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:token", 		res.at("/query/@type").asText());
		assertEquals("korap:term",			res.at("/query/wrap/@type").asText());
		assertEquals("M(a|ä)nn(er)?",		res.at("/query/wrap/key").asText());
		assertEquals("type:regex",			res.at("/query/wrap/type").asText());
		assertEquals("orth", 				res.at("/query/wrap/layer").asText());
		assertEquals("match:eq",			res.at("/query/wrap/match").asText());

		query = "[orth=\"M(a|ä)nn(er)?\"/x]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:token", 		res.at("/query/@type").asText());
		assertEquals("korap:term",			res.at("/query/wrap/@type").asText());
		assertEquals(".*?M(a|ä)nn(er)?.*?",	res.at("/query/wrap/key").asText());
		assertEquals("type:regex",			res.at("/query/wrap/type").asText());
		assertEquals("orth", 				res.at("/query/wrap/layer").asText());
		assertEquals("match:eq",			res.at("/query/wrap/match").asText());

		query = "\".*?Mann.*?\"";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:token", 		res.at("/query/@type").asText());
		assertEquals("korap:term",			res.at("/query/wrap/@type").asText());
		assertEquals(".*?Mann.*?",			res.at("/query/wrap/key").asText());
		assertEquals("type:regex",			res.at("/query/wrap/type").asText());
		assertEquals("orth", 				res.at("/query/wrap/layer").asText());
		assertEquals("match:eq",			res.at("/query/wrap/match").asText());

		query = "z.B./x";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:token", 		res.at("/query/@type").asText());
		assertEquals("korap:term",			res.at("/query/wrap/@type").asText());
		assertEquals(".*?z\\.B\\..*?",		res.at("/query/wrap/key").asText());
		assertEquals("type:regex",			res.at("/query/wrap/type").asText());
		assertEquals("orth", 				res.at("/query/wrap/layer").asText());
		assertEquals("match:eq",			res.at("/query/wrap/match").asText());

	}

	@Test
	public void testCaseSensitivityFlag() throws QueryException, JsonProcessingException, IOException {
		query = "[orth=deutscher/i]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:token", 		res.at("/query/@type").asText());
		assertEquals("korap:term",			res.at("/query/wrap/@type").asText());
		assertEquals("deutscher",			res.at("/query/wrap/key").asText());
		assertEquals("true",				res.at("/query/wrap/caseInsensitive").asText());
		assertEquals("orth", 				res.at("/query/wrap/layer").asText());
		assertEquals("match:eq",			res.at("/query/wrap/match").asText());

		query = "deutscher/i";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:token", 		res.at("/query/@type").asText());
		assertEquals("korap:term",			res.at("/query/wrap/@type").asText());
		assertEquals("deutscher",			res.at("/query/wrap/key").asText());
		assertEquals("true",				res.at("/query/wrap/caseInsensitive").asText());
		assertEquals("orth", 				res.at("/query/wrap/layer").asText());
		assertEquals("match:eq",			res.at("/query/wrap/match").asText());

		query = "deutscher/I";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:token", 		res.at("/query/@type").asText());
		assertEquals("korap:term",			res.at("/query/wrap/@type").asText());
		assertEquals("deutscher",			res.at("/query/wrap/key").asText());
		assertEquals("false",				res.at("/query/wrap/caseInsensitive").asText());
		assertEquals("orth", 				res.at("/query/wrap/layer").asText());
		assertEquals("match:eq",			res.at("/query/wrap/match").asText());

		query = "[orth=deutscher/i][orth=Bundestag]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence",	res.at("/query/operation").asText());
		operands = Lists.newArrayList(res.at("/query/operands").elements());
		assertEquals("korap:token",			operands.get(0).at("/@type").asText());
		assertEquals("deutscher",			operands.get(0).at("/wrap/key").asText());
		assertEquals("orth",				operands.get(0).at("/wrap/layer").asText());
		assertEquals("match:eq",			operands.get(0).at("/wrap/match").asText());
		assertEquals(true,					operands.get(0).at("/wrap/caseInsensitive").asBoolean());
		assertEquals("korap:token",			operands.get(1).at("/@type").asText());
		assertEquals("Bundestag",			operands.get(1).at("/wrap/key").asText());
		assertEquals("orth",				operands.get(1).at("/wrap/layer").asText());
		assertEquals("match:eq",			operands.get(1).at("/wrap/match").asText());
		assertEquals(true,					operands.get(1).at("/wrap/caseInsensitive").isMissingNode());

		query = "deutscher/i Bundestag";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence",	res.at("/query/operation").asText());
		operands = Lists.newArrayList(res.at("/query/operands").elements());
		assertEquals("korap:token",			operands.get(0).at("/@type").asText());
		assertEquals("deutscher",			operands.get(0).at("/wrap/key").asText());
		assertEquals("orth",				operands.get(0).at("/wrap/layer").asText());
		assertEquals("match:eq",			operands.get(0).at("/wrap/match").asText());
		assertEquals(true,					operands.get(0).at("/wrap/caseInsensitive").asBoolean());
		assertEquals("korap:token",			operands.get(1).at("/@type").asText());
		assertEquals("Bundestag",			operands.get(1).at("/wrap/key").asText());
		assertEquals("orth",				operands.get(1).at("/wrap/layer").asText());
		assertEquals("match:eq",			operands.get(1).at("/wrap/match").asText());
		assertEquals(true,					operands.get(1).at("/wrap/caseInsensitive").isMissingNode());
	}

	@Test
	public void testSpans() throws QueryException, JsonProcessingException, IOException {
		query = "<s>";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:span", 			res.at("/query/@type").asText());
		assertEquals("s",					res.at("/query/key").asText());

		query = "<vp>";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:span", 			res.at("/query/@type").asText());
		assertEquals("vp",					res.at("/query/key").asText());

		query = "<cnx/c=vp>";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:span", 			res.at("/query/@type").asText());
		assertEquals("vp",					res.at("/query/key").asText());
		assertEquals("cnx",					res.at("/query/foundry").asText());
		assertEquals("c",					res.at("/query/layer").asText());

		query = "<cnx/c!=vp>";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:span", 			res.at("/query/@type").asText());
		assertEquals("vp",					res.at("/query/key").asText());
		assertEquals("cnx",					res.at("/query/foundry").asText());
		assertEquals("c",					res.at("/query/layer").asText());
		assertEquals("match:ne",			res.at("/query/match").asText());

		query = "<cnx/c!=vp class!=header>";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:span", 			res.at("/query/@type").asText());
		assertEquals("vp",					res.at("/query/key").asText());
		assertEquals("cnx",					res.at("/query/foundry").asText());
		assertEquals("c",					res.at("/query/layer").asText());
		assertEquals("match:ne",			res.at("/query/match").asText());
		assertEquals("class",				res.at("/query/attr/key").asText());
		assertEquals("header",				res.at("/query/attr/value").asText());
		assertEquals("match:ne",			res.at("/query/attr/match").asText());

		query = "<cnx/c!=vp !(class!=header)>";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:span", 			res.at("/query/@type").asText());
		assertEquals("vp",					res.at("/query/key").asText());
		assertEquals("cnx",					res.at("/query/foundry").asText());
		assertEquals("c",					res.at("/query/layer").asText());
		assertEquals("match:ne",			res.at("/query/match").asText());
		assertEquals("class",				res.at("/query/attr/key").asText());
		assertEquals("header",				res.at("/query/attr/value").asText());
		assertEquals("match:eq",			res.at("/query/attr/match").asText());

		query = "<cnx/c!=vp !(class=header & id=7)>";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:span", 			res.at("/query/@type").asText());
		assertEquals("vp",					res.at("/query/key").asText());
		assertEquals("cnx",					res.at("/query/foundry").asText());
		assertEquals("c",					res.at("/query/layer").asText());
		assertEquals("match:ne",			res.at("/query/match").asText());
		assertEquals("korap:termGroup",		res.at("/query/attr/@type").asText());
		assertEquals("relation:and",		res.at("/query/attr/relation").asText());
		operands = Lists.newArrayList( res.at("/query/attr/operands").elements());
		assertEquals("korap:term",			operands.get(0).at("/@type").asText());
		assertEquals("class",				operands.get(0).at("/key").asText());
		assertEquals("header",				operands.get(0).at("/value").asText());
		assertEquals("match:ne",			operands.get(0).at("/match").asText());
		assertEquals("korap:term",			operands.get(1).at("/@type").asText());
		assertEquals("id",					operands.get(1).at("/key").asText());
		assertEquals(7,						operands.get(1).at("/value").asInt());
		assertEquals("match:ne",			operands.get(1).at("/match").asText());
	}

	@Test
	public void testDistances() throws QueryException, JsonProcessingException, IOException {
		query = "[base=der][][base=Mann]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence",	res.at("/query/operation").asText());
		assertEquals("true",				res.at("/query/inOrder").asText());
		assertEquals("korap:distance",		res.at("/query/distances").elements().next().at("/@type").asText());
		assertEquals("w",					res.at("/query/distances").elements().next().at("/key").asText());
		assertEquals("korap:boundary",		res.at("/query/distances").elements().next().at("/boundary/@type").asText());
		assertEquals(2,						res.at("/query/distances").elements().next().at("/boundary/min").asInt());
		assertEquals(2,						res.at("/query/distances").elements().next().at("/boundary/max").asInt());
		operands = Lists.newArrayList(res.at("/query/operands").elements());
		assertEquals("korap:token",			operands.get(0).at("/@type").asText());
		assertEquals("der",					operands.get(0).at("/wrap/key").asText());
		assertEquals("lemma",				operands.get(0).at("/wrap/layer").asText());
		assertEquals("match:eq",			operands.get(0).at("/wrap/match").asText());
		assertEquals("korap:token",			operands.get(1).at("/@type").asText());
		assertEquals("Mann",				operands.get(1).at("/wrap/key").asText());
		assertEquals("lemma",				operands.get(1).at("/wrap/layer").asText());
		assertEquals("match:eq",			operands.get(1).at("/wrap/match").asText());

		query = "[base=der][][][base=Mann]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence",	res.at("/query/operation").asText());
		assertEquals("true",				res.at("/query/inOrder").asText());
		assertEquals("korap:distance",		res.at("/query/distances").elements().next().at("/@type").asText());
		assertEquals("w",					res.at("/query/distances").elements().next().at("/key").asText());
		assertEquals("korap:boundary",		res.at("/query/distances").elements().next().at("/boundary/@type").asText());
		assertEquals(3,						res.at("/query/distances").elements().next().at("/boundary/min").asInt());
		assertEquals(3,						res.at("/query/distances").elements().next().at("/boundary/max").asInt());
		operands = Lists.newArrayList(res.at("/query/operands").elements());
		assertEquals("korap:token",			operands.get(0).at("/@type").asText());
		assertEquals("der",					operands.get(0).at("/wrap/key").asText());
		assertEquals("lemma",				operands.get(0).at("/wrap/layer").asText());
		assertEquals("match:eq",			operands.get(0).at("/wrap/match").asText());
		assertEquals("korap:token",			operands.get(1).at("/@type").asText());
		assertEquals("Mann",				operands.get(1).at("/wrap/key").asText());
		assertEquals("lemma",				operands.get(1).at("/wrap/layer").asText());
		assertEquals("match:eq",			operands.get(1).at("/wrap/match").asText());

		query = "[base=der][][]?[base=Mann]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence",	res.at("/query/operation").asText());
		assertEquals("true",				res.at("/query/inOrder").asText());
		assertEquals("korap:distance",		res.at("/query/distances").elements().next().at("/@type").asText());
		assertEquals("w",					res.at("/query/distances").elements().next().at("/key").asText());
		assertEquals("korap:boundary",		res.at("/query/distances").elements().next().at("/boundary/@type").asText());
		assertEquals(2,						res.at("/query/distances").elements().next().at("/boundary/min").asInt());
		assertEquals(3,						res.at("/query/distances").elements().next().at("/boundary/max").asInt());
		operands = Lists.newArrayList(res.at("/query/operands").elements());
		assertEquals("korap:token",			operands.get(0).at("/@type").asText());
		assertEquals("der",					operands.get(0).at("/wrap/key").asText());
		assertEquals("lemma",				operands.get(0).at("/wrap/layer").asText());
		assertEquals("match:eq",			operands.get(0).at("/wrap/match").asText());
		assertEquals("korap:token",			operands.get(1).at("/@type").asText());
		assertEquals("Mann",				operands.get(1).at("/wrap/key").asText());
		assertEquals("lemma",				operands.get(1).at("/wrap/layer").asText());
		assertEquals("match:eq",			operands.get(1).at("/wrap/match").asText());

		query = "[base=der][]+[base=Mann]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence",	res.at("/query/operation").asText());
		assertEquals("true",				res.at("/query/inOrder").asText());
		assertEquals("korap:distance",		res.at("/query/distances").elements().next().at("/@type").asText());
		assertEquals("w",					res.at("/query/distances").elements().next().at("/key").asText());
		assertEquals("korap:boundary",		res.at("/query/distances").elements().next().at("/boundary/@type").asText());
		assertEquals(2,						res.at("/query/distances").elements().next().at("/boundary/min").asInt());
		assertEquals(true,					res.at("/query/distances").elements().next().at("/boundary/max").isMissingNode());
		operands = Lists.newArrayList(res.at("/query/operands").elements());
		assertEquals("korap:token",			operands.get(0).at("/@type").asText());
		assertEquals("der",					operands.get(0).at("/wrap/key").asText());
		assertEquals("lemma",				operands.get(0).at("/wrap/layer").asText());
		assertEquals("match:eq",			operands.get(0).at("/wrap/match").asText());
		assertEquals("korap:token",			operands.get(1).at("/@type").asText());
		assertEquals("Mann",				operands.get(1).at("/wrap/key").asText());
		assertEquals("lemma",				operands.get(1).at("/wrap/layer").asText());
		assertEquals("match:eq",			operands.get(1).at("/wrap/match").asText());

		query = "[base=der][]*[base=Mann]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence",	res.at("/query/operation").asText());
		assertEquals("true",				res.at("/query/inOrder").asText());
		assertEquals("korap:distance",		res.at("/query/distances").elements().next().at("/@type").asText());
		assertEquals("w",					res.at("/query/distances").elements().next().at("/key").asText());
		assertEquals("korap:boundary",		res.at("/query/distances").elements().next().at("/boundary/@type").asText());
		assertEquals(1,						res.at("/query/distances").elements().next().at("/boundary/min").asInt());
		assertEquals(true,					res.at("/query/distances").elements().next().at("/boundary/max").isMissingNode());

		query = "[base=der][]{2,5}[base=Mann][]?[][base=Frau]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence",	res.at("/query/operation").asText());
		assertEquals("true",				res.at("/query/inOrder").asText());
		assertEquals("korap:distance",		res.at("/query/distances").elements().next().at("/@type").asText());
		assertEquals("w",					res.at("/query/distances").elements().next().at("/key").asText());
		assertEquals("korap:boundary",		res.at("/query/distances").elements().next().at("/boundary/@type").asText());
		assertEquals(3,						res.at("/query/distances").elements().next().at("/boundary/min").asInt());
		assertEquals(6,						res.at("/query/distances").elements().next().at("/boundary/max").asInt());
		operands = Lists.newArrayList(res.at("/query/operands").elements());
		assertEquals("korap:token",			operands.get(0).at("/@type").asText());
		assertEquals("der",					operands.get(0).at("/wrap/key").asText());
		assertEquals("lemma",				operands.get(0).at("/wrap/layer").asText());
		assertEquals("match:eq",			operands.get(0).at("/wrap/match").asText());
		assertEquals("korap:group",			operands.get(1).at("/@type").asText());
		assertEquals("operation:sequence",	operands.get(1).at("/operation").asText());
		assertEquals("korap:distance",		operands.get(1).get("distances").elements().next().at("/@type").asText());
		assertEquals("w",					operands.get(1).get("distances").elements().next().at("/key").asText());
		assertEquals("korap:boundary",		operands.get(1).get("distances").elements().next().at("/boundary/@type").asText());
		assertEquals(2,						operands.get(1).get("distances").elements().next().at("/boundary/min").asInt());
		assertEquals(3,						operands.get(1).get("distances").elements().next().at("/boundary/max").asInt());
		operands = Lists.newArrayList(operands.get(1).get("operands").elements());
		assertEquals("Mann",				operands.get(0).at("/wrap/key").asText());
		assertEquals("lemma",				operands.get(0).at("/wrap/layer").asText());
		assertEquals("match:eq",			operands.get(0).at("/wrap/match").asText());
		assertEquals("Frau",				operands.get(1).at("/wrap/key").asText());
		assertEquals("lemma",				operands.get(1).at("/wrap/layer").asText());
		assertEquals("match:eq",			operands.get(1).at("/wrap/match").asText());

		query = "[base=geht][base=der][]*contains(<s>,<np>)";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence",	res.at("/query/operation").asText());
		assertEquals(true,					res.at("/query/inOrder").isMissingNode());
		assertEquals(true,					res.at("/query/distances").isMissingNode());
		operands = Lists.newArrayList(res.at("/query/operands").elements());
		assertEquals("korap:token",			operands.get(0).at("/@type").asText());
		assertEquals("geht",				operands.get(0).at("/wrap/key").asText());
		assertEquals("lemma",				operands.get(0).at("/wrap/layer").asText());
		assertEquals("match:eq",			operands.get(0).at("/wrap/match").asText());
		assertEquals("korap:group",			operands.get(1).at("/@type").asText());
		assertEquals("operation:sequence",	operands.get(1).at("/operation").asText());
		assertEquals("korap:distance",		operands.get(1).get("distances").elements().next().at("/@type").asText());
		assertEquals("w",					operands.get(1).get("distances").elements().next().at("/key").asText());
		assertEquals("korap:boundary",		operands.get(1).get("distances").elements().next().at("/boundary/@type").asText());
		assertEquals(1,						operands.get(1).get("distances").elements().next().at("/boundary/min").asInt());
		assertEquals(true,					operands.get(1).get("distances").elements().next().at("/boundary/max").isMissingNode());
		operands = Lists.newArrayList(operands.get(1).get("operands").elements());
		assertEquals("der",					operands.get(0).at("/wrap/key").asText());
		assertEquals("lemma",				operands.get(0).at("/wrap/layer").asText());
		assertEquals("match:eq",			operands.get(0).at("/wrap/match").asText());
		assertEquals("korap:group",			operands.get(1).at("/@type").asText());
		assertEquals("operation:position",	operands.get(1).at("/operation").asText());
	}

	@Test
	public void testDistancesWithClass() throws QueryException, JsonProcessingException, IOException {
		query = "[base=der]{[]}[base=Mann]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence",	res.at("/query/operation").asText());
		assertEquals(true,					res.at("/query/inOrder").isMissingNode());
		assertEquals(true,					res.at("/query/distances").isMissingNode());
		operands = Lists.newArrayList(res.at("/query/operands").elements());
		assertEquals("der",					operands.get(0).at("/wrap/key").asText());
		assertEquals("Mann",				operands.get(2).at("/wrap/key").asText());
		assertEquals("korap:group",			operands.get(1).at("/@type").asText());
		assertEquals("operation:class",		operands.get(1).at("/operation").asText());
		assertEquals(1,						operands.get(1).at("/classOut").asInt());
		operands = Lists.newArrayList(operands.get(1).at("/operands").elements());
		assertEquals("korap:token",			operands.get(0).at("/@type").asText());
		assertEquals(true,					operands.get(0).at("/wrap").isMissingNode());

		query = "[base=der]{2:[]}[base=Mann]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		operands = Lists.newArrayList(res.at("/query/operands").elements());
		assertEquals("operation:class",		operands.get(1).at("/operation").asText());
		assertEquals(2,						operands.get(1).at("/classOut").asInt());

		query = "{1:[]}[base=der][base=Mann]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		operands = Lists.newArrayList(res.at("/query/operands").elements());
		assertEquals("operation:class",		operands.get(0).at("/operation").asText());
		assertEquals(1,						operands.get(0).at("/classOut").asInt());

		query = "{1:{2:der} {3:[]} Mann}";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		operands = Lists.newArrayList(res.at("/query/operands").elements());
		assertEquals(1,	operands.size());  // class operation may only have one operand (the sequence)
		operands = Lists.newArrayList(operands.get(0).at("/operands").elements());
		assertEquals(3,	operands.size());  // the sequence has three operands ("der", "[]" and "Mann")

	}

	@Test
	public void testLeadingTrailingEmptyTokens() throws QueryException, JsonProcessingException, IOException {
		query = "[][base=Mann]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		operands = Lists.newArrayList(res.at("/query/operands").elements());
		assertEquals("korap:token",			operands.get(0).at("/@type").asText());
		assertEquals(true,					operands.get(0).at("/key").isMissingNode());

		query = "[][][base=Mann]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		operands = Lists.newArrayList(res.at("/query/operands").elements());
		assertEquals("korap:group",			operands.get(0).at("/@type").asText());
		assertEquals("operation:repetition",operands.get(0).at("/operation").asText());
		assertEquals(2,						operands.get(0).at("/boundary/min").asInt());
		assertEquals(2,						operands.get(0).at("/boundary/max").asInt());
		operands = Lists.newArrayList(operands.get(0).at("/operands").elements());
		assertEquals("korap:token",			operands.get(0).at("/@type").asText());
		assertEquals(true,					operands.get(0).at("/key").isMissingNode());

		query = "startswith(<s>, [][base=Mann])";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		operands = Lists.newArrayList(res.at("/query/operands"));
		operands = Lists.newArrayList(operands.get(1).at("/operands"));
		assertEquals("korap:token",			operands.get(0).at("/@type").asText());
		assertEquals(true,					operands.get(0).at("/key").isMissingNode());
	}

	@Test
	public void testRepetition() throws QueryException, JsonProcessingException, IOException {
		query = "der{3}";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 			res.at("/query/@type").asText());
		assertEquals("operation:repetition", 	res.at("/query/operation").asText());
		assertEquals("der", 					res.at("/query/operands/0/wrap/key").asText());
		assertEquals(3, 						res.at("/query/boundary/min").asInt());
		assertEquals(3, 						res.at("/query/boundary/max").asInt());

		query = "der{,3}";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(0,			res.at("/query/boundary/min").asInt());
		assertEquals(3, 		res.at("/query/boundary/max").asInt());

		query = "der{3,}";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(3, 		res.at("/query/boundary/min").asInt());
		assertEquals(true, 		res.at("/query/boundary/max").isMissingNode());

		query = "der{3,7}";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(3, 		res.at("/query/boundary/min").asInt());
		assertEquals(7, 		res.at("/query/boundary/max").asInt());

		query = "der*";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(0, 		res.at("/query/boundary/min").asInt());
		assertEquals(true, 		res.at("/query/boundary/max").isMissingNode());

		query = "der+";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(1, 		res.at("/query/boundary/min").asInt());
		assertEquals(true, 		res.at("/query/boundary/max").isMissingNode());
	};

	@Test
	public void testGroupRepetition() throws QueryException, JsonProcessingException, IOException {
		query = "contains(<s>, (der){3})";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:position", 	res.at("/query/operation").asText());
		assertEquals("korap:span", 			res.at("/query/operands/0/@type").asText());
		assertEquals("s", 					res.at("/query/operands/0/key").asText());
		assertEquals("korap:group", 		res.at("/query/operands/1/@type").asText());
		assertEquals("operation:repetition",res.at("/query/operands/1/operation").asText());

		query = "contains(<s>, (der){3,})";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(3, 			res.at("/query/operands/1/boundary/min").asInt());
		assertEquals(true, 			res.at("/query/operands/1/boundary/max").isMissingNode());

		query = "contains(<s>, (der){,3})";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(0, 			res.at("/query/operands/1/boundary/min").asInt());
		assertEquals(3, 			res.at("/query/operands/1/boundary/max").asInt());

		query = "contains(<s>, (der){3,7})";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(3, 			res.at("/query/operands/1/boundary/min").asInt());
		assertEquals(7, 			res.at("/query/operands/1/boundary/max").asInt());

		query = "contains(<s>, (der)*)";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(0, 			res.at("/query/operands/1/boundary/min").asInt());
		assertEquals(true, 			res.at("/query/operands/1/boundary/max").isMissingNode());
	};

	@Test
	public void testPositions() throws QueryException, JsonProcessingException, IOException {
		query = "contains(<s>, der)";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:position", 	res.at("/query/operation").asText());
		assertEquals("frames:contains",		res.at("/query/frames/0").asText());
		assertEquals(true, 					res.at("/query/frames/1").isMissingNode());
		assertEquals("korap:span", 			res.at("/query/operands/0/@type").asText());
		assertEquals("s", 					res.at("/query/operands/0/key").asText());
		assertEquals("korap:token", 		res.at("/query/operands/1/@type").asText());

		query = "contains(<s>,<np>)";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("s", 		res.at("/query/operands/0/key").asText());
		assertEquals("np", 		res.at("/query/operands/1/key").asText());

		query = "contains(<s>,[orth=der][orth=Mann])";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 			res.at("/query/@type").asText());
		assertEquals("operation:position", 		res.at("/query/operation").asText());
		assertEquals("frames:contains", 		res.at("/query/frames/0").asText());
		assertEquals("s", 						res.at("/query/operands/0/key").asText());
		assertEquals("korap:group", 			res.at("/query/operands/1/@type").asText());
		assertEquals("operation:sequence", 		res.at("/query/operands/1/operation").asText());
		assertEquals("der", 					res.at("/query/operands/1/operands/0/wrap/key").asText());
		assertEquals("Mann", 					res.at("/query/operands/1/operands/1/wrap/key").asText());

		query = "contains(<s>,[orth=der][orth=Mann]*)";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 			res.at("/query/@type").asText());
		assertEquals("operation:position", 		res.at("/query/operation").asText());
		assertEquals("frames:contains", 		res.at("/query/frames/0").asText());
		assertEquals("s", 						res.at("/query/operands/0/key").asText());
		assertEquals("korap:group", 			res.at("/query/operands/1/@type").asText());
		assertEquals("operation:sequence", 		res.at("/query/operands/1/operation").asText());
		assertEquals("der", 					res.at("/query/operands/1/operands/0/wrap/key").asText());
		assertEquals("operation:repetition", 	res.at("/query/operands/1/operands/1/operation").asText());
		assertEquals(0, 						res.at("/query/operands/1/operands/1/boundary/min").asInt());
		assertEquals(true, 						res.at("/query/operands/1/operands/1/boundary/max").isMissingNode());
		assertEquals("Mann", 					res.at("/query/operands/1/operands/1/operands/0/wrap/key").asText());

		query = "contains(<s>,startswith(<np>,<pp>))";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("s", 						res.at("/query/operands/0/key").asText());
		assertEquals("korap:group", 			res.at("/query/operands/1/@type").asText());
		assertEquals("frames:startswith", 		res.at("/query/operands/1/frames/0").asText());
		assertEquals("operation:position", 		res.at("/query/operands/1/operation").asText());
		assertEquals("np", 						res.at("/query/operands/1/operands/0/key").asText());
		assertEquals("pp", 						res.at("/query/operands/1/operands/1/key").asText());

		query = "[base=Auto]overlaps(<s>, der)";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 			res.at("/query/@type").asText());
		assertEquals("operation:sequence", 		res.at("/query/operation").asText());
		assertEquals("korap:group", 			res.at("/query/operands/1/@type").asText());
		assertEquals("operation:position", 		res.at("/query/operands/1/operation").asText());
		assertEquals("frames:overlapsLeft", 	res.at("/query/operands/1/frames/0").asText());
		assertEquals("frames:overlapsRight", 	res.at("/query/operands/1/frames/1").asText());
		assertEquals("korap:span", 				res.at("/query/operands/1/operands/0/@type").asText());
		assertEquals("s", 						res.at("/query/operands/1/operands/0/key").asText());
		assertEquals("korap:token", 			res.at("/query/operands/1/operands/1/@type").asText());

		query = "[base=Auto]            overlaps(<s>, der)";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 			res.at("/query/@type").asText());
		assertEquals("operation:sequence", 		res.at("/query/operation").asText());
		assertEquals("korap:group", 			res.at("/query/operands/1/@type").asText());
		assertEquals("operation:position", 		res.at("/query/operands/1/operation").asText());
		assertEquals("frames:overlapsLeft", 	res.at("/query/operands/1/frames/0").asText());
		assertEquals("frames:overlapsRight", 	res.at("/query/operands/1/frames/1").asText());
		assertEquals("korap:span", 				res.at("/query/operands/1/operands/0/@type").asText());
		assertEquals("s", 						res.at("/query/operands/1/operands/0/key").asText());
		assertEquals("korap:token", 			res.at("/query/operands/1/operands/1/@type").asText());
	};

	@Test
	public void testCoordinatedFields() throws QueryException, JsonProcessingException, IOException {
		query = "[base=Mann&(cas=N|cas=A)]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:token", 		res.at("/query/@type").asText());
		assertEquals("relation:and", 		res.at("/query/wrap/relation").asText());
		assertEquals("Mann", 				res.at("/query/wrap/operands/0/key").asText());
		assertEquals("lemma", 				res.at("/query/wrap/operands/0/layer").asText());
		assertEquals("korap:termGroup", 	res.at("/query/wrap/operands/1/@type").asText());
		assertEquals("relation:or", 		res.at("/query/wrap/operands/1/relation").asText());
		assertEquals("N", 					res.at("/query/wrap/operands/1/operands/0/key").asText());
		assertEquals("cas", 				res.at("/query/wrap/operands/1/operands/0/layer").asText());
		assertEquals("A", 					res.at("/query/wrap/operands/1/operands/1/key").asText());
		assertEquals("cas", 				res.at("/query/wrap/operands/1/operands/1/layer").asText());

		query = "[base=Mann&cas=N&gen=m]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:token", 		res.at("/query/@type").asText());
		assertEquals("relation:and", 		res.at("/query/wrap/relation").asText());
		assertEquals("Mann", 				res.at("/query/wrap/operands/0/key").asText());
		assertEquals("lemma", 				res.at("/query/wrap/operands/0/layer").asText());
		assertEquals("korap:termGroup", 	res.at("/query/wrap/operands/1/@type").asText());
		assertEquals("relation:and", 		res.at("/query/wrap/operands/1/relation").asText());
		assertEquals("N", 					res.at("/query/wrap/operands/1/operands/0/key").asText());
		assertEquals("cas", 				res.at("/query/wrap/operands/1/operands/0/layer").asText());
		assertEquals("m", 					res.at("/query/wrap/operands/1/operands/1/key").asText());
		assertEquals("gen", 				res.at("/query/wrap/operands/1/operands/1/layer").asText());
	}

	@Test
	public void testTokenSequence() throws QueryException, JsonProcessingException, IOException {
		query = "[base=Mann][orth=Frau]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence", 	res.at("/query/operation").asText());
		assertEquals("Mann", 				res.at("/query/operands/0/wrap/key").asText());
		assertEquals("lemma", 				res.at("/query/operands/0/wrap/layer").asText());
		assertEquals("Frau", 				res.at("/query/operands/1/wrap/key").asText());
		assertEquals("orth", 				res.at("/query/operands/1/wrap/layer").asText());

		query = "[base=Mann][orth=Frau][p=NN]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("NN", 					res.at("/query/operands/2/wrap/key").asText());
		assertEquals("p", 					res.at("/query/operands/2/wrap/layer").asText());

		query = "[base=Mann][orth=Frau][p=NN][foo=bar]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("bar", 				res.at("/query/operands/3/wrap/key").asText());
		assertEquals("foo", 				res.at("/query/operands/3/wrap/layer").asText());
	}

	@Test
	public void testDisjSegments() throws QueryException, JsonProcessingException, IOException {
		query = "[base=der]|[base=das]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:or", 		res.at("/query/operation").asText());
		assertEquals("korap:token", 		res.at("/query/operands/0/@type").asText());
		assertEquals("korap:token", 		res.at("/query/operands/1/@type").asText());
		assertEquals("der", 				res.at("/query/operands/0/wrap/key").asText());
		assertEquals("lemma", 				res.at("/query/operands/0/wrap/layer").asText());
		assertEquals("das", 				res.at("/query/operands/1/wrap/key").asText());
		assertEquals("lemma", 				res.at("/query/operands/1/wrap/layer").asText());

		query = "([base=der]|[base=das])[base=Schild]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence", 	res.at("/query/operation").asText());
		assertEquals("Schild", 				res.at("/query/operands/1/wrap/key").asText());
		assertEquals("korap:group", 		res.at("/query/operands/0/@type").asText());
		assertEquals("operation:or", 		res.at("/query/operands/0/operation").asText());

		query = "[base=Schild]([base=der]|[base=das])";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("Schild", 				res.at("/query/operands/0/wrap/key").asText());
		assertEquals("korap:group", 		res.at("/query/operands/1/@type").asText());
		assertEquals("operation:or", 		res.at("/query/operands/1/operation").asText());

		query = "([orth=der][base=katze])|([orth=eine][base=baum])";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:or", 		res.at("/query/operation").asText());
		assertEquals("korap:group", 		res.at("/query/operands/0/@type").asText());
		assertEquals("operation:sequence", 	res.at("/query/operands/0/operation").asText());
		assertEquals("korap:token", 		res.at("/query/operands/0/operands/0/@type").asText());
		assertEquals("der", 				res.at("/query/operands/0/operands/0/wrap/key").asText());
		assertEquals("katze",				res.at("/query/operands/0/operands/1/wrap/key").asText());
		assertEquals("eine", 				res.at("/query/operands/1/operands/0/wrap/key").asText());
		assertEquals("baum", 				res.at("/query/operands/1/operands/1/wrap/key").asText());

		query = "[orth=der][base=katze]|[orth=eine][base=baum]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:or", 		res.at("/query/operation").asText());
		assertEquals("korap:group", 		res.at("/query/operands/0/@type").asText());
		assertEquals("operation:sequence", 	res.at("/query/operands/0/operation").asText());
		assertEquals("korap:token", 		res.at("/query/operands/0/operands/0/@type").asText());
		assertEquals("der", 				res.at("/query/operands/0/operands/0/wrap/key").asText());
		assertEquals("katze", 				res.at("/query/operands/0/operands/1/wrap/key").asText());
		assertEquals("eine", 				res.at("/query/operands/1/operands/0/wrap/key").asText());
		assertEquals("baum", 				res.at("/query/operands/1/operands/1/wrap/key").asText());

		query = "[orth=der]([base=katze]|[orth=eine])[base=baum]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence", 	res.at("/query/operation").asText());
		assertEquals("korap:group", 		res.at("/query/operands/1/@type").asText());
		assertEquals("operation:or", 		res.at("/query/operands/1/operation").asText());
		assertEquals("korap:token", 		res.at("/query/operands/0/@type").asText());
		assertEquals("korap:token", 		res.at("/query/operands/2/@type").asText());
		assertEquals("der", 				res.at("/query/operands/0/wrap/key").asText());
		assertEquals("katze", 				res.at("/query/operands/1/operands/0/wrap/key").asText());
		assertEquals("eine", 				res.at("/query/operands/1/operands/1/wrap/key").asText());
		assertEquals("baum", 				res.at("/query/operands/2/wrap/key").asText());

		query = "[orth=der][base=katze]|[orth=der][base=hund]|[orth=der][base=baum]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("der", 				res.at("/query/operands/2/operands/0/wrap/key").asText());
		assertEquals("baum", 				res.at("/query/operands/2/operands/1/wrap/key").asText());

		query = "[orth=der]([base=katze]|[base=hund]|[base=baum])";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence", 	res.at("/query/operation").asText());
		assertEquals("korap:group", 		res.at("/query/operands/1/@type").asText());
		assertEquals("operation:or", 		res.at("/query/operands/1/operation").asText());
		assertEquals("korap:token", 		res.at("/query/operands/0/@type").asText());
		assertEquals("korap:token", 		res.at("/query/operands/1/operands/0/@type").asText());
		assertEquals("korap:token", 		res.at("/query/operands/1/operands/1/@type").asText());
		assertEquals("korap:token", 		res.at("/query/operands/1/operands/2/@type").asText());
		assertEquals("katze", 				res.at("/query/operands/1/operands/0/wrap/key").asText());
		assertEquals("hund", 				res.at("/query/operands/1/operands/1/wrap/key").asText());
		assertEquals("baum", 				res.at("/query/operands/1/operands/2/wrap/key").asText());
	}

	@Test
	public void testTokenSpanSequence() throws QueryException, JsonProcessingException, IOException {
		query = "[base=Mann]<vp>";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence", 	res.at("/query/operation").asText());
		assertEquals("korap:token", 		res.at("/query/operands/0/@type").asText());
		assertEquals("Mann", 				res.at("/query/operands/0/wrap/key").asText());
		assertEquals("korap:span", 			res.at("/query/operands/1/@type").asText());
		assertEquals("vp", 					res.at("/query/operands/1/key").asText());

		query = "<vp>[base=Mann]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence", 	res.at("/query/operation").asText());
		assertEquals("korap:span", 			res.at("/query/operands/0/@type").asText());
		assertEquals("vp", 					res.at("/query/operands/0/key").asText());
		assertEquals("korap:token", 		res.at("/query/operands/1/@type").asText());
		assertEquals("Mann", 				res.at("/query/operands/1/wrap/key").asText());

		query = "<vp>[base=Mann]<pp>";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:span", 			res.at("/query/operands/2/@type").asText());
		assertEquals("pp", 					res.at("/query/operands/2/key").asText());

		query = "<vp>[base=Mann]<pp><np>";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("pp", 					res.at("/query/operands/2/key").asText());
		assertEquals("np", 					res.at("/query/operands/3/key").asText());
	}

	@Test 
	public void testClasses() throws QueryException, JsonProcessingException, IOException {
		query = "{[base=Mann]}";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:class", 	res.at("/query/operation").asText());
		assertEquals(1, 					res.at("/query/classOut").asInt());
		assertEquals(true, 					res.at("/query/classIn").isMissingNode());
		assertEquals("Mann", 				res.at("/query/operands/0/wrap/key").asText());

		query = "{[base=Mann][orth=Frau]}";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:class", 	res.at("/query/operation").asText());
		assertEquals(1, 					res.at("/query/classOut").asInt());
		assertEquals(true, 					res.at("/query/classIn").isMissingNode());
		assertEquals("Mann", 				res.at("/query/operands/0/operands/0/wrap/key").asText());
		assertEquals("Frau", 				res.at("/query/operands/0/operands/1/wrap/key").asText());

		query = "[p=NN]{[base=Mann][orth=Frau]}";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence", 	res.at("/query/operation").asText());
		assertEquals("korap:group", 		res.at("/query/operands/1/@type").asText());
		assertEquals("operation:class", 	res.at("/query/operands/1/operation").asText());
		assertEquals(1, 					res.at("/query/operands/1/classOut").asInt());
		assertEquals(true, 					res.at("/query/operands/1/classIn").isMissingNode());
		assertEquals("Mann", 				res.at("/query/operands/1/operands/0/operands/0/wrap/key").asText());
		assertEquals("Frau", 				res.at("/query/operands/1/operands/0/operands/1/wrap/key").asText());

		query = "{[base=Mann][orth=Frau]}[p=NN]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence", 	res.at("/query/operation").asText());
		assertEquals("korap:group", 		res.at("/query/operands/0/@type").asText());
		assertEquals("operation:class", 	res.at("/query/operands/0/operation").asText());
		assertEquals(1, 					res.at("/query/operands/0/classOut").asInt());
		assertEquals(true, 					res.at("/query/operands/0/classIn").isMissingNode());
		assertEquals("Mann", 				res.at("/query/operands/0/operands/0/operands/0/wrap/key").asText());
		assertEquals("Frau", 				res.at("/query/operands/0/operands/0/operands/1/wrap/key").asText());

		query = "{2:{1:[tt/p=ADJA]}[mate/p=NN]}";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:class", 	res.at("/query/operation").asText());
		assertEquals("operation:sequence", 	res.at("/query/operands/0/operation").asText());
		assertEquals(2, 					res.at("/query/classOut").asInt());
		assertEquals(1, 					res.at("/query/operands/0/operands/0/classOut").asInt());
	}

	@Test
	public void testFocusSplit() throws QueryException, JsonProcessingException, IOException {
		query = "focus([orth=Der]{[orth=Mann]})";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:reference", 	res.at("/query/@type").asText());
		assertEquals("operation:focus", 	res.at("/query/operation").asText());
		assertEquals(1, 					res.at("/query/classRef/0").asInt());
		assertEquals("operation:sequence", 	res.at("/query/operands/0/operation").asText());
		assertEquals("operation:class", 	res.at("/query/operands/0/operands/1/operation").asText());
		assertEquals(1, 					res.at("/query/operands/0/operands/1/classOut").asInt());
		assertEquals("Mann", 				res.at("/query/operands/0/operands/1/operands/0/wrap/key").asText());

		query = "focus([orth=Der]{[orth=Mann][orth=geht]})";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("operation:sequence", 	res.at("/query/operands/0/operands/1/operands/0/operation").asText());
		assertEquals("Mann", 				res.at("/query/operands/0/operands/1/operands/0/operands/0/wrap/key").asText());
		assertEquals("geht", 				res.at("/query/operands/0/operands/1/operands/0/operands/1/wrap/key").asText());

		query = "focus(2:[orth=Der]{2:[orth=Mann][orth=geht]})";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(2, 					res.at("/query/classRef/0").asInt());
		assertEquals(2, 					res.at("/query/operands/0/operands/1/classOut").asInt());

		query = "focus(3:startswith(<s>,{3:<np>}))";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(3, 					res.at("/query/classRef/0").asInt());
		assertEquals("korap:reference", 	res.at("/query/@type").asText());
		assertEquals("operation:focus", 	res.at("/query/operation").asText());
		assertEquals("operation:position", 	res.at("/query/operands/0/operation").asText());
		assertEquals("operation:class", 	res.at("/query/operands/0/operands/1/operation").asText());
		assertEquals(3, 					res.at("/query/operands/0/operands/1/classOut").asInt());
		assertEquals("frames:startswith", 	res.at("/query/operands/0/frames/0").asText());

		query = "focus(1000:startswith(<s>,{1000:<np>}))";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(127, 					res.at("/query/classRef/0").asInt());
		assertEquals(127, 					res.at("/query/operands/0/operands/1/classOut").asInt());

		query = "focus(3: startswith(<s>, {3:[base=der]{1:[mate/p=ADJA]{2:[tt/p=NN]}}}))";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(3, 					res.at("/query/classRef/0").asInt());
		assertEquals("korap:reference", 	res.at("/query/@type").asText());
		assertEquals("operation:focus", 	res.at("/query/operation").asText());
		assertEquals("operation:position", 	res.at("/query/operands/0/operation").asText());
		assertEquals("frames:startswith", 	res.at("/query/operands/0/frames/0").asText());
		assertEquals("operation:class", 	res.at("/query/operands/0/operands/1/operation").asText());
		assertEquals(3, 					res.at("/query/operands/0/operands/1/classOut").asInt());
		assertEquals("operation:sequence", 	res.at("/query/operands/0/operands/1/operands/0/operation").asText());
		assertEquals("operation:class", 	res.at("/query/operands/0/operands/1/operands/0/operands/1/operation").asText());
		assertEquals(1, 					res.at("/query/operands/0/operands/1/operands/0/operands/1/classOut").asInt());
		assertEquals("operation:sequence", 	res.at("/query/operands/0/operands/1/operands/0/operands/1/operands/0/operation").asText());
		assertEquals("operation:class", 	res.at("/query/operands/0/operands/1/operands/0/operands/1/operands/0/operands/1/operation").asText());
		assertEquals(2, 					res.at("/query/operands/0/operands/1/operands/0/operands/1/operands/0/operands/1/classOut").asInt());

		query = "split(3: startswith(<s>, {3:[base=der]{1:[mate/p=ADJA]{2:[tt/p=NN]}}}))";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(3, 					res.at("/query/classRef/0").asInt());
		assertEquals(true, 					res.at("/query/classRef/1").isMissingNode());
		assertEquals("korap:reference", 	res.at("/query/@type").asText());
		assertEquals("operation:split", 	res.at("/query/operation").asText());

		query = "split(2|3: startswith(<s>, {3:[base=der]{1:[mate/p=ADJA]{2:[tt/p=NN]}}}))";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(2, 						res.at("/query/classRef/0").asInt());
		assertEquals(3, 						res.at("/query/classRef/1").asInt());
		assertEquals("classRefOp:intersection", res.at("/query/classRefOp").asText());
		assertEquals("korap:reference", 		res.at("/query/@type").asText());
		assertEquals("operation:split", 		res.at("/query/operation").asText());

		query = "focus(1:{[base=der]}{1:[pos=ADJA]})";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(1, 					res.at("/query/classRef/0").asInt());
		assertEquals(1, 					res.at("/query/operands/0/operands/0/classOut").asInt());
		assertEquals(1, 					res.at("/query/operands/0/operands/1/classOut").asInt());
	}

	@Test
	public void testSubmatch() throws QueryException, JsonProcessingException, IOException {
		query = "submatch(1,:<s>)";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:reference", 	res.at("/query/@type").asText());
		assertEquals("operation:focus", 	res.at("/query/operation").asText());
		assertEquals(1, 					res.at("/query/spanRef/0").asInt());
		assertEquals(true, 					res.at("/query/spanRef/1").isMissingNode());
		assertEquals("s", 					res.at("/query/operands/0/key").asText());

		query = "submatch(1,4:<s>)";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:reference", 	res.at("/query/@type").asText());
		assertEquals("operation:focus", 	res.at("/query/operation").asText());
		assertEquals(1, 					res.at("/query/spanRef/0").asInt());
		assertEquals(4, 					res.at("/query/spanRef/1").asInt());

		query = "submatch(1,4:contains(<s>,[base=Haus]))";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:reference", 	res.at("/query/@type").asText());
		assertEquals("operation:focus", 	res.at("/query/operation").asText());
		assertEquals(1, 					res.at("/query/spanRef/0").asInt());
		assertEquals(4, 					res.at("/query/spanRef/1").asInt());
		assertEquals("frames:contains", 	res.at("/query/operands/0/frames/0").asText());
		assertEquals("s", 					res.at("/query/operands/0/operands/0/key").asText());
		assertEquals("Haus", 				res.at("/query/operands/0/operands/1/wrap/key").asText());
	}
	@Test
	public void testRelations() throws QueryException, JsonProcessingException, IOException {
		query = "relatesTo(<s>,<np>)";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:relation", 	res.at("/query/operation").asText());
		assertEquals("korap:relation", 		res.at("/query/relation/@type").asText());
		assertEquals("s", 					res.at("/query/operands/0/key").asText());
		assertEquals("np", 					res.at("/query/operands/1/key").asText());

		query = "relatesTo([base=Baum],<np>)";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:relation", 	res.at("/query/operation").asText());
		assertEquals("korap:relation", 		res.at("/query/relation/@type").asText());
		assertEquals("Baum", 				res.at("/query/operands/0/wrap/key").asText());
		assertEquals("np", 					res.at("/query/operands/1/key").asText());

		query = "relatesTo(Baum,<np>)";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("orth", 				res.at("/query/operands/0/wrap/layer").asText());
		assertEquals("Baum", 				res.at("/query/operands/0/wrap/key").asText());

		query = "relatesTo(mate/d=HEAD:<np>,[base=Baum])";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("lemma", 				res.at("/query/operands/1/wrap/layer").asText());
		assertEquals("Baum", 				res.at("/query/operands/1/wrap/key").asText());
		assertEquals("korap:relation", 		res.at("/query/relation/@type").asText());
		assertEquals("mate", 				res.at("/query/relation/foundry").asText());
		assertEquals("d", 					res.at("/query/relation/layer").asText());
		assertEquals("HEAD", 				res.at("/query/relation/key").asText());

		query = "dominates(Baum,<np>)";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("orth", 				res.at("/query/operands/0/wrap/layer").asText());
		assertEquals("Baum", 				res.at("/query/operands/0/wrap/key").asText());
		assertEquals("korap:relation", 		res.at("/query/relation/@type").asText());
		assertEquals("c", 					res.at("/query/relation/layer").asText());

		query = "dominates(cnx/c:<vp>,<np>)";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("cnx", 				res.at("/query/relation/foundry").asText());
		assertEquals("c", 					res.at("/query/relation/layer").asText());

		query = "dominates(cnx/c*:<vp>,<np>)";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("cnx", 				res.at("/query/relation/foundry").asText());
		assertEquals("c", 					res.at("/query/relation/layer").asText());
		assertEquals(0, 					res.at("/query/relation/boundary/min").asInt());
		assertEquals(true, 					res.at("/query/relation/boundary/max").isMissingNode());

		query = "dominates(cnx/c{1,5}:<vp>,<np>)";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(1, 					res.at("/query/relation/boundary/min").asInt());
		assertEquals(5, 					res.at("/query/relation/boundary/max").asInt());

		query = "dominates(cnx/c{,5}:<vp>,<np>)";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(0, 					res.at("/query/relation/boundary/min").asInt());
		assertEquals(5, 					res.at("/query/relation/boundary/max").asInt());

		query = "dominates(cnx/c{5}:<vp>,<np>)";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals(5, 					res.at("/query/relation/boundary/min").asInt());
		assertEquals(5, 					res.at("/query/relation/boundary/max").asInt());
	}

	@Test
	public void testAlign() throws QueryException, JsonProcessingException, IOException {
		query = "[orth=der]^[orth=Mann]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("operation:sequence", 	res.at("/query/operation").asText());
		assertEquals("der", 				res.at("/query/operands/0/wrap/key").asText());
		assertEquals("operation:class", 	res.at("/query/operands/1/operation").asText());
		assertEquals(129, 					res.at("/query/operands/1/classOut").asInt());
		assertEquals(129, 					res.at("/meta/alignment").asInt());

		query = "[orth=der]^[orth=große][orth=Mann]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("operation:sequence", 	res.at("/query/operation").asText());
		assertEquals("operation:class", 	res.at("/query/operands/1/operation").asText());
		assertEquals("operation:sequence", 	res.at("/query/operands/1/operands/0/operation").asText());
		assertEquals("große", 				res.at("/query/operands/1/operands/0/operands/0/wrap/key").asText());
		assertEquals("Mann", 				res.at("/query/operands/1/operands/0/operands/1/wrap/key").asText());
		assertEquals(129, 					res.at("/query/operands/1/classOut").asInt());
		assertEquals(129, 					res.at("/meta/alignment").asInt());

		query = "([base=a]^[base=b])|[base=c]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("operation:or", 		res.at("/query/operation").asText());
		assertEquals("operation:sequence", 	res.at("/query/operands/0/operation").asText());
		assertEquals("operation:class", 	res.at("/query/operands/0/operands/1/operation").asText());
		assertEquals("a", 					res.at("/query/operands/0/operands/0/wrap/key").asText());
		assertEquals("b", 					res.at("/query/operands/0/operands/1/operands/0/wrap/key").asText());
		assertEquals("c", 					res.at("/query/operands/1/wrap/key").asText());
		assertEquals(129, 					res.at("/query/operands/0/operands/1/classOut").asInt());
		assertEquals(129, 					res.at("/meta/alignment").asInt());

		query = "([base=a]^[base=b][base=c])|[base=d]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("operation:sequence", 	res.at("/query/operands/0/operands/1/operands/0/operation").asText());
		assertEquals("b", 					res.at("/query/operands/0/operands/1/operands/0/operands/0/wrap/key").asText());
		assertEquals("c", 					res.at("/query/operands/0/operands/1/operands/0/operands/1/wrap/key").asText());
		assertEquals("d", 					res.at("/query/operands/1/wrap/key").asText());

		query = "([base=a]^[base=b]^[base=c])|[base=d]";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("operation:sequence", 	res.at("/query/operands/0/operands/1/operands/0/operation").asText());
		assertEquals("b", 					res.at("/query/operands/0/operands/1/operands/0/operands/0/wrap/key").asText());
		assertEquals("c", 					res.at("/query/operands/0/operands/1/operands/0/operands/1/operands/0/wrap/key").asText());
		assertEquals("d", 					res.at("/query/operands/1/wrap/key").asText());
		assertEquals(129, 					res.at("/meta/alignment/0").asInt());
		assertEquals(130, 					res.at("/meta/alignment/1").asInt());
	}

	@Test
	public void testSimpleQueries() throws QueryException, JsonProcessingException, IOException {
		query = "Baum";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:token", 		res.at("/query/@type").asText());
		assertEquals("korap:term",			res.at("/query/wrap/@type").asText());
		assertEquals("Baum",				res.at("/query/wrap/key").asText());
		assertEquals("orth", 				res.at("/query/wrap/layer").asText());
		assertEquals("match:eq",			res.at("/query/wrap/match").asText());

		query = "Der Baum";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("korap:group", 		res.at("/query/@type").asText());
		assertEquals("operation:sequence",	res.at("/query/operation").asText());
		assertEquals("korap:token",			res.at("/query/operands/0/@type").asText());
		assertEquals("korap:term",			res.at("/query/operands/0/wrap/@type").asText());
		assertEquals("Der",					res.at("/query/operands/0/wrap/key").asText());
		assertEquals("Baum",				res.at("/query/operands/1/wrap/key").asText());
		assertEquals("orth", 				res.at("/query/operands/0/wrap/layer").asText());
		assertEquals("match:eq",			res.at("/query/operands/0/wrap/match").asText());
		assertEquals("orth", 				res.at("/query/operands/1/wrap/layer").asText());
		assertEquals("match:eq",			res.at("/query/operands/1/wrap/match").asText());

		query = "Der große Baum";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("Der",					res.at("/query/operands/0/wrap/key").asText());
		assertEquals("große",				res.at("/query/operands/1/wrap/key").asText());
		assertEquals("Baum",				res.at("/query/operands/2/wrap/key").asText());

		query = "Der (große|kleine) Baum";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("Der",					res.at("/query/operands/0/wrap/key").asText());
		assertEquals("operation:or",		res.at("/query/operands/1/operation").asText());
		assertEquals("große",				res.at("/query/operands/1/operands/0/wrap/key").asText());
		assertEquals("kleine",				res.at("/query/operands/1/operands/1/wrap/key").asText());
		assertEquals("Baum",				res.at("/query/operands/2/wrap/key").asText());

		query = "der große Baum | der kleine Baum";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("operation:or",		res.at("/query/operation").asText());
		assertEquals("der",					res.at("/query/operands/0/operands/0/wrap/key").asText());
		assertEquals("große",				res.at("/query/operands/0/operands/1/wrap/key").asText());
		assertEquals("Baum",				res.at("/query/operands/0/operands/2/wrap/key").asText());
		assertEquals("der",					res.at("/query/operands/1/operands/0/wrap/key").asText());
		assertEquals("kleine",				res.at("/query/operands/1/operands/1/wrap/key").asText());
		assertEquals("Baum",				res.at("/query/operands/1/operands/2/wrap/key").asText());

		query = "Der [p=ADJA] Baum";
		qs.setQuery(query, "poliqarpplus");
		res = mapper.readTree(qs.toJSON());
		assertEquals("Der",					res.at("/query/operands/0/wrap/key").asText());
		assertEquals("ADJA",				res.at("/query/operands/1/wrap/key").asText());
		assertEquals("p",					res.at("/query/operands/1/wrap/layer").asText());
		assertEquals("Baum",				res.at("/query/operands/2/wrap/key").asText());
	}
}