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Jakarta Standard Tag Library Implementation
/*
* Copyright (c) 1997-2018 Oracle and/or its affiliates. All rights reserved.
* Copyright 2004 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.
*/
package org.apache.taglibs.standard.extra.spath;
import java.util.List;
import java.util.Vector;
/**
* Represents a relative SPath expression.
*
* @author Shawn Bayern
*/
public class RelativePath extends Path {
private RelativePath next;
private Step step;
/**
* Constructs a new RelativePath object, based on a Step and another
* (possibly null) RelativePath. If 'all' is true, then the path
* matches all instances of 'next' underneath 'step'; otherwise;
* 'next' must be an immediate child of 'step'.
*/
public RelativePath(Step step, RelativePath next) {
if (step == null)
throw new IllegalArgumentException("non-null step required");
this.step = step;
this.next = next;
}
// inherit JavaDoc comment
public List getSteps() {
// simply merge our 'step' with our 'next'
List l;
if (next != null)
l = next.getSteps();
else
l = new Vector();
l.add(0, step);
return l;
}
}