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Jakarta Standard Tag Library Implementation
/*
* Copyright (c) 1997-2020 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.tei;
import jakarta.servlet.jsp.tagext.TagData;
import jakarta.servlet.jsp.tagext.TagExtraInfo;
/**
* An implementation of TagExtraInfo that implements validation for
* {@literal <}x:parse{@literal >}'s attributes
*
* @author Shawn Bayern
*/
public class XmlParseTEI extends TagExtraInfo {
final private static String VAR = "var";
final private static String VAR_DOM = "varDom";
final private static String SCOPE = "scope";
final private static String SCOPE_DOM = "scopeDom";
public boolean isValid(TagData us) {
// must have no more than one of VAR and VAR_DOM ...
if (Util.isSpecified(us, VAR) && Util.isSpecified(us, VAR_DOM))
return false;
// ... and must have no less than one of VAR and VAR_DOM
if (!(Util.isSpecified(us, VAR) || Util.isSpecified(us, VAR_DOM)))
return false;
// When either 'scope' is specified, its 'var' must be specified
if (Util.isSpecified(us, SCOPE) && !Util.isSpecified(us, VAR))
return false;
if (Util.isSpecified(us, SCOPE_DOM) && !Util.isSpecified(us, VAR_DOM))
return false;
return true;
}
}