/*
* Copyright 2013 Bazaarvoice, Inc.
*
* 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 com.bazaarvoice.jolt.common.pathelement;
import com.bazaarvoice.jolt.common.reference.DollarReference;
import com.bazaarvoice.jolt.common.WalkedPath;
public class DollarPathElement extends BasePathElement implements MatchablePathElement, EvaluatablePathElement {
private final DollarReference dRef;
public DollarPathElement( String key ) {
super(key);
dRef = new DollarReference( key );
}
@Override
public String getCanonicalForm() {
return dRef.getCanonicalForm();
}
@Override
public String evaluate( WalkedPath walkedPath ) {
LiteralPathElement pe = walkedPath.elementFromEnd( dRef.getPathIndex() ).getLiteralPathElement();
return pe.getSubKeyRef( dRef.getKeyGroup() );
}
@Override
public LiteralPathElement match( String dataKey, WalkedPath walkedPath ) {
String evaled = evaluate( walkedPath );
return new LiteralPathElement( evaled );
}
}