package org.apache.lucene.search.regex;
/**
* Copyright 2006 The Apache Software Foundation
*
* Licensed 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 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();
/** Constructs a query for terms matching <code>term</code>. */
public RegexQuery(Term term) {
super(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;
}
protected FilteredTermEnum getEnum(IndexReader reader) throws IOException {
Term term = new Term(getTerm().field(), getTerm().text());
return new RegexTermEnum(reader, term, regexImpl);
}
/* generated by IntelliJ IDEA */
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 */
public int hashCode() {
int result = super.hashCode();
result = 29 * result + regexImpl.hashCode();
return result;
}
}
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