/*
* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package com.sun.org.apache.xerces.internal.util;
//java imports
import java.util.Iterator ;
import java.util.NoSuchElementException;
//xerces imports
import com.sun.org.apache.xerces.internal.util.XMLAttributesImpl ;
/**
*
* @author Neeraj Bajaj, Sun Microsystems
*/
/**
* Its better to extend the functionality of existing XMLAttributesImpl and also make it of type Iterator.
* We can directly give an object of type iterator from StartElement event. We should also have
* Attribute object of type javax.xml.stream.Attribute internally. It would avoid the need of creating
* new javax.xml.stream.Attribute object at the later stage.
*
* Should we change XMLAttributes interface to implement Iteraotr ? I think its better avoid touching XNI as
* much as possible. - NB.
*/
public class XMLAttributesIteratorImpl extends XMLAttributesImpl implements Iterator {
//pointer to current position.
protected int fCurrent = 0 ;
protected XMLAttributesImpl.Attribute fLastReturnedItem ;
/** Creates a new instance of XMLAttributesIteratorImpl */
public XMLAttributesIteratorImpl() {
}
public boolean hasNext() {
return fCurrent < getLength() ? true : false ;
}//hasNext()
public Object next() {
if(hasNext()){
// should this be of type javax.xml.stream.Attribute ?
return fLastReturnedItem = fAttributes[fCurrent++] ;
}
else{
throw new NoSuchElementException() ;
}
}//next
public void remove() {
//make sure that only last returned item can be removed.
if(fLastReturnedItem == fAttributes[fCurrent - 1]){
//remove the attribute at current index and lower the current position by 1.
removeAttributeAt(fCurrent--) ;
}
else {
//either the next method has been called yet, or the remove method has already been called
//after the last call to the next method.
throw new IllegalStateException();
}
}//remove
public void removeAllAttributes() {
super.removeAllAttributes() ;
fCurrent = 0 ;
}
/** xxx: should we be doing this way ? Attribute event defines so many functions which doesn't make any sense
*for Attribute.
*
*/
/*
class AttributeImpl extends com.sun.org.apache.xerces.internal.util.XMLAttributesImpl.Attribute implements javax.xml.stream.events.Attribute{
}
*/
} //XMLAttributesIteratorImpl