| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 2003 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Apache" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache |
| * XMLBeans", nor may "Apache" appear in their name, without prior |
| * written permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 2000-2003 BEA Systems |
| * Inc., <http://www.bea.com/>. For more information on the Apache Software |
| * Foundation, please see <http://www.apache.org/>. |
| */ |
| |
| package org.apache.xmlbeans.impl.common; |
| |
| import weblogic.xml.stream.ReferenceResolver; |
| import weblogic.xml.stream.XMLEvent; |
| import weblogic.xml.stream.XMLInputStream; |
| import weblogic.xml.stream.XMLName; |
| import weblogic.xml.stream.XMLStreamException; |
| |
| public class GenericXmlInputStream implements XMLInputStream |
| { |
| public GenericXmlInputStream ( ) |
| { |
| _master = this; |
| _elementCount = 1; // Go all the way |
| } |
| |
| private GenericXmlInputStream ( GenericXmlInputStream master ) |
| { |
| (_master = master).ensureInit(); |
| _nextEvent = master._nextEvent; |
| } |
| |
| // |
| // The source for all events |
| // |
| |
| protected XMLEvent nextEvent ( ) throws XMLStreamException |
| { |
| throw new RuntimeException( "nextEvent not overridden" ); |
| } |
| |
| // |
| // |
| // |
| |
| private class EventItem |
| { |
| EventItem ( XMLEvent e ) |
| { |
| _event = e; |
| } |
| |
| int getType ( ) { return _event.getType(); } |
| boolean hasName ( ) { return _event.hasName(); } |
| XMLName getName ( ) { return _event.getName(); } |
| |
| final XMLEvent _event; |
| |
| EventItem _next; |
| } |
| |
| private void ensureInit ( ) |
| { |
| if (!_master._initialized) |
| { |
| try |
| { |
| _master._nextEvent = getNextEvent(); |
| } |
| catch ( XMLStreamException e ) |
| { |
| throw new RuntimeException( e ); |
| } |
| |
| _master._initialized = true; |
| } |
| } |
| |
| private EventItem getNextEvent ( ) throws XMLStreamException |
| { |
| XMLEvent e = nextEvent(); |
| |
| return e == null ? null : new EventItem( e ); |
| } |
| |
| public XMLEvent next ( ) throws XMLStreamException |
| { |
| ensureInit(); |
| |
| EventItem currentEvent = _nextEvent; |
| |
| if (_nextEvent != null) |
| { |
| if (_nextEvent._next == null) |
| _nextEvent._next = _master.getNextEvent(); |
| |
| _nextEvent = _nextEvent._next; |
| } |
| |
| if (currentEvent == null) |
| return null; |
| |
| if (currentEvent.getType() == XMLEvent.END_ELEMENT) |
| { |
| if (--_elementCount <= 0) |
| _nextEvent = null; |
| } |
| else if (currentEvent.getType() == XMLEvent.START_ELEMENT) |
| _elementCount++; |
| |
| return currentEvent._event; |
| } |
| |
| public boolean hasNext ( ) throws XMLStreamException |
| { |
| ensureInit(); |
| |
| return _nextEvent != null; |
| } |
| |
| public void skip ( ) throws XMLStreamException |
| { |
| next(); |
| } |
| |
| public void skipElement ( ) throws XMLStreamException |
| { |
| ensureInit(); |
| |
| for ( ; _nextEvent != null ; next() ) |
| { |
| if (_nextEvent.getType() == XMLEvent.START_ELEMENT) |
| break; |
| } |
| |
| int count = 0; |
| |
| for ( ; _nextEvent != null ; next() ) |
| { |
| int type = next().getType(); |
| |
| if (type == XMLEvent.START_ELEMENT) |
| count++; |
| else if (type == XMLEvent.END_ELEMENT && --count == 0) |
| break; |
| } |
| } |
| |
| public XMLEvent peek ( ) throws XMLStreamException |
| { |
| ensureInit(); |
| |
| return _nextEvent._event; |
| } |
| |
| public boolean skip ( int eventType ) throws XMLStreamException |
| { |
| ensureInit(); |
| |
| for ( ; _nextEvent != null ; next() ) |
| { |
| if (_nextEvent.getType() == eventType) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| public boolean skip ( XMLName name ) throws XMLStreamException |
| { |
| ensureInit(); |
| |
| for ( ; _nextEvent != null ; next() ) |
| { |
| if (_nextEvent.hasName() && _nextEvent.getName().equals( name )) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| public boolean skip ( XMLName name, int eventType ) throws XMLStreamException |
| { |
| ensureInit(); |
| |
| for ( ; _nextEvent != null ; next() ) |
| { |
| if (_nextEvent.getType() == eventType && |
| _nextEvent.hasName() && |
| _nextEvent.getName().equals( name )) |
| { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| public XMLInputStream getSubStream ( ) throws XMLStreamException |
| { |
| ensureInit(); |
| |
| GenericXmlInputStream subStream = new GenericXmlInputStream( this ); |
| |
| subStream.skip( XMLEvent.START_ELEMENT ); |
| |
| return subStream; |
| } |
| |
| public void close ( ) throws XMLStreamException |
| { |
| // BUGBUG - can I do anything here, really? |
| // SHould I count the number of open sub streams? |
| // I have no destructor, how can I close properly? |
| } |
| |
| public ReferenceResolver getReferenceResolver ( ) |
| { |
| ensureInit(); |
| |
| throw new RuntimeException( "Not impl" ); |
| } |
| |
| public void setReferenceResolver ( ReferenceResolver resolver ) |
| { |
| ensureInit(); |
| |
| throw new RuntimeException( "Not impl" ); |
| } |
| |
| private boolean _initialized; |
| private EventItem _nextEvent; |
| private int _elementCount; |
| private GenericXmlInputStream _master; |
| } |