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Elasticsearch subproject :server
/*
* 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.
*/
package org.elasticsearch.index.query;
import org.apache.lucene.util.automaton.Operations;
import org.elasticsearch.common.xcontent.XContentBuilder;
import java.io.IOException;
/**
* A Query that does fuzzy matching for a specific value.
*/
public class RegexpQueryBuilder extends MultiTermQueryBuilder implements BoostableQueryBuilder {
private final String name;
private final String regexp;
private int flags = RegexpQueryParser.DEFAULT_FLAGS_VALUE;
private float boost = -1;
private String rewrite;
private String queryName;
private int maxDeterminizedStates = Operations.DEFAULT_MAX_DETERMINIZED_STATES;
private boolean maxDetermizedStatesSet;
/**
* Constructs a new term query.
*
* @param name The name of the field
* @param regexp The regular expression
*/
public RegexpQueryBuilder(String name, String regexp) {
this.name = name;
this.regexp = regexp;
}
/**
* Sets the boost for this query. Documents matching this query will (in addition to the normal
* weightings) have their score multiplied by the boost provided.
*/
@Override
public RegexpQueryBuilder boost(float boost) {
this.boost = boost;
return this;
}
public RegexpQueryBuilder flags(RegexpFlag... flags) {
int value = 0;
if (flags.length == 0) {
value = RegexpFlag.ALL.value;
} else {
for (RegexpFlag flag : flags) {
value |= flag.value;
}
}
this.flags = value;
return this;
}
/**
* Sets the regexp maxDeterminizedStates.
*/
public RegexpQueryBuilder maxDeterminizedStates(int value) {
this.maxDeterminizedStates = value;
this.maxDetermizedStatesSet = true;
return this;
}
public RegexpQueryBuilder rewrite(String rewrite) {
this.rewrite = rewrite;
return this;
}
/**
* Sets the query name for the filter that can be used when searching for matched_filters per hit.
*/
public RegexpQueryBuilder queryName(String queryName) {
this.queryName = queryName;
return this;
}
@Override
public void doXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject(RegexpQueryParser.NAME);
builder.startObject(name);
builder.field("value", regexp);
if (flags != -1) {
builder.field("flags_value", flags);
}
if (maxDetermizedStatesSet) {
builder.field("max_determinized_states", maxDeterminizedStates);
}
if (boost != -1) {
builder.field("boost", boost);
}
if (rewrite != null) {
builder.field("rewrite", rewrite);
}
if (queryName != null) {
builder.field("_name", queryName);
}
builder.endObject();
builder.endObject();
}
}