/*
* @(#)$Id: AttrNodeSequence.java 3619 2008-03-26 07:23:03Z yui $
*
* Copyright 2006-2008 Makoto YUI
*
* 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.
*
* Contributors:
* Makoto YUI - initial implementation
*/
package xbird.xquery.dm.value.sequence;
import java.util.HashSet;
import java.util.Set;
import xbird.xquery.DynamicError;
import xbird.xquery.XQRTException;
import xbird.xquery.dm.value.node.DMAttribute;
import xbird.xquery.meta.DynamicContext;
import xbird.xquery.misc.QNameTable.QualifiedName;
/**
*
* <DIV lang="en"></DIV>
* <DIV lang="ja"></DIV>
*
* @author Makoto YUI (yuin405+xbird@gmail.com)
*/
public final class AttrNodeSequence<T extends DMAttribute> extends NodeSequence<T> {
private static final long serialVersionUID = 1L;
private final Set<QualifiedName> attrSet = new HashSet<QualifiedName>(6);
public AttrNodeSequence(DynamicContext dynEnv) {
super(dynEnv);
}
/**
* @throws DynamicError
* @link http://www.w3.org/TR/xquery/#ERRXQDY0025
*/
@Override
public void addItem(T attr) {
QualifiedName qname = attr.nodeName();
boolean uniq = attrSet.add(qname);
if(!uniq) {
throw new XQRTException("err:XQDY0025", "Duplicate attribute: " + qname);
}
super.addItem(attr);
}
}