package org.apache.lucene.search.regex;
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.
*/
import org.apache.lucene.search.MultiTermQuery;
import org.apache.lucene.search.FilteredTermEnum;
import org.apache.lucene.index.Term;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.util.ToStringUtils;
import java.io.IOException;
/** Implements the regular expression term search query.
* The expressions supported depend on the regular expression implementation
* used by way of the {@link RegexCapabilities} interface.
*
* @see RegexTermEnum
*/
public class RegexQuery extends MultiTermQuery implements RegexQueryCapable {
private RegexCapabilities regexImpl = new JavaUtilRegexCapabilities();
private Term term;
/** Constructs a query for terms matching <code>term</code>. */
public RegexQuery(Term term) {
this.term = term;
}
public Term getTerm() { return term; }
/**
* Defines which {@link RegexCapabilities} implementation is used by this instance.
*
* @param impl
*/
public void setRegexImplementation(RegexCapabilities impl) {
this.regexImpl = impl;
}
/**
* @return The implementation used by this instance.
*/
public RegexCapabilities getRegexImplementation() {
return regexImpl;
}
@Override
protected FilteredTermEnum getEnum(IndexReader reader) throws IOException {
return new RegexTermEnum(reader, term, regexImpl);
}
@Override
public String toString(String field) {
StringBuilder buffer = new StringBuilder();
if (!term.field().equals(field)) {
buffer.append(term.field());
buffer.append(":");
}
buffer.append(term.text());
buffer.append(ToStringUtils.boost(getBoost()));
return buffer.toString();
}
/* generated by IntelliJ IDEA */
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
if (!super.equals(o)) return false;
final RegexQuery that = (RegexQuery) o;
return regexImpl.equals(that.regexImpl);
}
/* generated by IntelliJ IDEA */
@Override
public int hashCode() {
int result = super.hashCode();
result = 29 * result + regexImpl.hashCode();
return result;
}
}