| /* 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.xmlbeans.impl.common; |
| |
| import org.apache.xmlbeans.xml.stream.ReferenceResolver; |
| import org.apache.xmlbeans.xml.stream.XMLEvent; |
| import org.apache.xmlbeans.xml.stream.XMLInputStream; |
| import org.apache.xmlbeans.xml.stream.XMLName; |
| import org.apache.xmlbeans.xml.stream.XMLStreamException; |
| |
| /** |
| * @deprecated XMLInputStream was deprecated by XMLStreamReader from STaX - jsr173 API. |
| */ |
| 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; |
| } |