/*
* 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.
*/
package org.exoplatform.services.jcr.impl.core.query.lucene;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.BooleanClause;
import org.apache.lucene.search.BooleanQuery;
import org.apache.lucene.search.Query;
import org.exoplatform.services.jcr.datamodel.IllegalNameException;
import org.exoplatform.services.jcr.datamodel.InternalQName;
import java.io.IOException;
import java.util.Set;
/**
* <code>NameQuery</code> implements a query for the name of a node.
*/
public class NameQuery extends Query {
/**
* The serial version UID
*/
private static final long serialVersionUID = 6411494650704435343L;
/**
* The node name.
*/
private final InternalQName nodeName;
/**
* The index format version.
*/
private final IndexFormatVersion version;
/**
* The internal namespace mappings of the index.
*/
private final NamespaceMappings nsMappings;
/**
* Creates a new <code>NameQuery</code>.
*
* @param nodeName the name of the nodes to return.
* @param version the version of the index.
* @param nsMappings the namespace mappings of the index.
*/
public NameQuery(InternalQName nodeName,
IndexFormatVersion version,
NamespaceMappings nsMappings) {
this.nodeName = nodeName;
this.version = version;
this.nsMappings = nsMappings;
}
/**
* @return the name of the nodes to return.
*/
public InternalQName getName() {
return nodeName;
}
/**
* {@inheritDoc}
*/
public Query rewrite(IndexReader reader) throws IOException {
if (version.getVersion() >= IndexFormatVersion.V3.getVersion()) {
// use LOCAL_NAME and NAMESPACE_URI field
BooleanQuery name = new BooleanQuery();
name.add(new JcrTermQuery(new Term(FieldNames.NAMESPACE_URI, nodeName.getNamespace())),
BooleanClause.Occur.MUST);
name.add(new JcrTermQuery(new Term(FieldNames.LOCAL_NAME,
nodeName.getName())),
BooleanClause.Occur.MUST);
return name;
} else {
// use LABEL field
try {
return new JcrTermQuery(new Term(FieldNames.LABEL,
nsMappings.translateName(nodeName)));
} catch (IllegalNameException e) {
throw Util.createIOException(e);
}
}
}
/**
* {@inheritDoc}
*/
public void extractTerms(Set<Term> terms) {
}
/**
* {@inheritDoc}
*/
public String toString(String field) {
return "name() = " + nodeName.toString();
}
}