org.opensearch.index.query.SpanContainingQueryBuilder Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of opensearch Show documentation
Show all versions of opensearch Show documentation
OpenSearch subproject :server
/*
* SPDX-License-Identifier: Apache-2.0
*
* The OpenSearch Contributors require contributions made to
* this file be licensed under the Apache-2.0 license or a
* compatible open source license.
*/
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/*
* Modifications Copyright OpenSearch Contributors. See
* GitHub history for details.
*/
package org.opensearch.index.query;
import org.apache.lucene.queries.spans.SpanContainingQuery;
import org.apache.lucene.queries.spans.SpanQuery;
import org.apache.lucene.search.BooleanClause;
import org.apache.lucene.search.Query;
import org.opensearch.core.ParseField;
import org.opensearch.core.common.ParsingException;
import org.opensearch.core.common.io.stream.StreamInput;
import org.opensearch.core.common.io.stream.StreamOutput;
import org.opensearch.core.xcontent.XContentBuilder;
import org.opensearch.core.xcontent.XContentParser;
import java.io.IOException;
import java.util.Objects;
import static org.opensearch.index.query.SpanQueryBuilder.SpanQueryBuilderUtil.checkNoBoost;
/**
* Builder for {@link org.apache.lucene.queries.spans.SpanContainingQuery}.
*
* @opensearch.internal
*/
public class SpanContainingQueryBuilder extends AbstractQueryBuilder implements SpanQueryBuilder {
public static final String NAME = "span_containing";
private static final ParseField BIG_FIELD = new ParseField("big");
private static final ParseField LITTLE_FIELD = new ParseField("little");
private final SpanQueryBuilder big;
private final SpanQueryBuilder little;
/**
* @param big the big clause, it must enclose {@code little} for a match.
* @param little the little clause, it must be contained within {@code big} for a match.
*/
public SpanContainingQueryBuilder(SpanQueryBuilder big, SpanQueryBuilder little) {
if (big == null) {
throw new IllegalArgumentException("inner clause [big] cannot be null.");
}
if (little == null) {
throw new IllegalArgumentException("inner clause [little] cannot be null.");
}
this.little = little;
this.big = big;
}
/**
* Read from a stream.
*/
public SpanContainingQueryBuilder(StreamInput in) throws IOException {
super(in);
big = (SpanQueryBuilder) in.readNamedWriteable(QueryBuilder.class);
little = (SpanQueryBuilder) in.readNamedWriteable(QueryBuilder.class);
}
@Override
protected void doWriteTo(StreamOutput out) throws IOException {
out.writeNamedWriteable(big);
out.writeNamedWriteable(little);
}
/**
* @return the big clause, it must enclose {@code little} for a match.
*/
public SpanQueryBuilder bigQuery() {
return this.big;
}
/**
* @return the little clause, it must be contained within {@code big} for a match.
*/
public SpanQueryBuilder littleQuery() {
return this.little;
}
@Override
protected void doXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject(NAME);
builder.field(BIG_FIELD.getPreferredName());
big.toXContent(builder, params);
builder.field(LITTLE_FIELD.getPreferredName());
little.toXContent(builder, params);
printBoostAndQueryName(builder);
builder.endObject();
}
public static SpanContainingQueryBuilder fromXContent(XContentParser parser) throws IOException {
float boost = AbstractQueryBuilder.DEFAULT_BOOST;
String queryName = null;
SpanQueryBuilder big = null;
SpanQueryBuilder little = null;
String currentFieldName = null;
XContentParser.Token token;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token == XContentParser.Token.START_OBJECT) {
if (BIG_FIELD.match(currentFieldName, parser.getDeprecationHandler())) {
QueryBuilder query = parseInnerQueryBuilder(parser);
if (query instanceof SpanQueryBuilder == false) {
throw new ParsingException(parser.getTokenLocation(), "span_containing [big] must be of type span query");
}
big = (SpanQueryBuilder) query;
checkNoBoost(NAME, currentFieldName, parser, big);
} else if (LITTLE_FIELD.match(currentFieldName, parser.getDeprecationHandler())) {
QueryBuilder query = parseInnerQueryBuilder(parser);
if (query instanceof SpanQueryBuilder == false) {
throw new ParsingException(parser.getTokenLocation(), "span_containing [little] must be of type span query");
}
little = (SpanQueryBuilder) query;
checkNoBoost(NAME, currentFieldName, parser, little);
} else {
throw new ParsingException(
parser.getTokenLocation(),
"[span_containing] query does not support [" + currentFieldName + "]"
);
}
} else if (AbstractQueryBuilder.BOOST_FIELD.match(currentFieldName, parser.getDeprecationHandler())) {
boost = parser.floatValue();
} else if (AbstractQueryBuilder.NAME_FIELD.match(currentFieldName, parser.getDeprecationHandler())) {
queryName = parser.text();
} else {
throw new ParsingException(
parser.getTokenLocation(),
"[span_containing] query does not support [" + currentFieldName + "]"
);
}
}
SpanContainingQueryBuilder query = new SpanContainingQueryBuilder(big, little);
query.boost(boost).queryName(queryName);
return query;
}
@Override
protected Query doToQuery(QueryShardContext context) throws IOException {
Query innerBig = big.toQuery(context);
assert innerBig instanceof SpanQuery;
Query innerLittle = little.toQuery(context);
assert innerLittle instanceof SpanQuery;
return new SpanContainingQuery((SpanQuery) innerBig, (SpanQuery) innerLittle);
}
@Override
protected int doHashCode() {
return Objects.hash(big, little);
}
@Override
protected boolean doEquals(SpanContainingQueryBuilder other) {
return Objects.equals(big, other.big) && Objects.equals(little, other.little);
}
@Override
public String getWriteableName() {
return NAME;
}
@Override
public void visit(QueryBuilderVisitor visitor) {
visitor.accept(this);
visitor.getChildVisitor(BooleanClause.Occur.MUST).accept(big);
visitor.getChildVisitor(BooleanClause.Occur.MUST).accept(little);
}
}