/*
* ModeShape (http://www.modeshape.org)
*
* 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.
*/
package org.modeshape.jcr.query.xpath;
import javax.jcr.query.Query;
import org.modeshape.common.text.ParsingException;
import org.modeshape.jcr.query.model.QueryCommand;
import org.modeshape.jcr.query.model.TypeSystem;
import org.modeshape.jcr.query.parse.InvalidQueryException;
import org.modeshape.jcr.query.parse.QueryParser;
import org.modeshape.jcr.query.xpath.XPath.Component;
/**
* A {@link QueryParser} implementation that accepts XPath expressions and converts them to a {@link QueryCommand ModeShape
* Abstract Query Model} representation.
*/
public class XPathQueryParser implements QueryParser {
static final boolean COLLAPSE_INNER_COMPONENTS = true;
@SuppressWarnings( "deprecation" )
private static final String LANGUAGE = Query.XPATH;
@Override
public String getLanguage() {
return LANGUAGE;
}
@Override
public String toString() {
return LANGUAGE;
}
@Override
public int hashCode() {
return LANGUAGE.hashCode();
}
@Override
public boolean equals( Object obj ) {
if (obj == this) return true;
if (obj instanceof QueryParser) {
QueryParser that = (QueryParser)obj;
return this.getLanguage().equals(that.getLanguage());
}
return false;
}
@Override
public QueryCommand parseQuery( String query,
TypeSystem typeSystem ) throws InvalidQueryException, ParsingException {
Component xpath = new XPathParser(typeSystem).parseXPath(query);
// Convert the result into a QueryCommand ...
QueryCommand command = new XPathToQueryTranslator(typeSystem, query).createQuery(xpath);
return command;
}
}