org.apache.jackrabbit.commons.query.sql2.SQL2QOMBuilder Maven / Gradle / Ivy
/*
* 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.apache.jackrabbit.commons.query.sql2;
import java.util.List;
import java.util.ArrayList;
import java.util.Arrays;
import javax.jcr.query.qom.QueryObjectModel;
import javax.jcr.query.qom.QueryObjectModelFactory;
import javax.jcr.query.InvalidQueryException;
import javax.jcr.query.Query;
import javax.jcr.ValueFactory;
import javax.jcr.RepositoryException;
import org.apache.jackrabbit.commons.query.QueryObjectModelBuilder;
/**
* SQL2QOMBuilder implements QOM builder that understands
* {@link Query#JCR_SQL2} and {@link Query#JCR_JQOM}. JCR_JQOM
* might be surprising, but JSR 283 says that the serialization format of
* JCR_JQOM is JCR_SQL2. This is important when
* a JQOM is stored on a node as a serialized String and a language property
* set to JCR_JQOM.
*/
public class SQL2QOMBuilder implements QueryObjectModelBuilder {
/**
* Supports {@link Query#JCR_JQOM} and {@link Query#JCR_SQL2}.
*/
private static final List SUPPORTED = new ArrayList(
Arrays.asList(Query.JCR_JQOM, Query.JCR_SQL2));
/**
* {@inheritDoc}
*/
public QueryObjectModel createQueryObjectModel(String statement,
QueryObjectModelFactory qf,
ValueFactory vf)
throws InvalidQueryException, RepositoryException {
return new Parser(qf, vf).createQueryObjectModel(statement);
}
/**
* {@inheritDoc}
*/
public boolean canHandle(String language) {
return SUPPORTED.contains(language);
}
/**
* {@inheritDoc}
*/
public String[] getSupportedLanguages() {
return SUPPORTED.toArray(new String[SUPPORTED.size()]);
}
/**
* {@inheritDoc}
*/
public String toString(QueryObjectModel qom)
throws InvalidQueryException {
try {
return QOMFormatter.format(qom);
} catch (RepositoryException e) {
throw new InvalidQueryException(e.getMessage(), e);
}
}
}