/*
* Copyright 2005 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 com.sun.org.apache.xerces.internal.util;
import com.sun.org.apache.xerces.internal.xni.parser.XMLErrorHandler;
import org.xml.sax.ErrorHandler;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
/**
* Wraps {@link XMLErrorHandler} and make it look like a SAX {@link ErrorHandler}.
*
* <p>
* The derived class should override the {@link #getErrorHandler()} method
* so that it will return the correct {@link XMLErrorHandler} instance.
* This method will be called whenever an error/warning is found.
*
* <p>
* Experience shows that it is better to store the actual
* {@link XMLErrorHandler} in one place and looks up that variable,
* rather than copying it into every component that needs an error handler
* and update all of them whenever it is changed, IMO.
*
* @author Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
*
* @version $Id: ErrorHandlerProxy.java,v 1.2.6.1 2005/09/05 07:54:22 neerajbj Exp $
*/
public abstract class ErrorHandlerProxy implements ErrorHandler {
public void error(SAXParseException e) throws SAXException {
XMLErrorHandler eh = getErrorHandler();
if (eh instanceof ErrorHandlerWrapper) {
((ErrorHandlerWrapper)eh).fErrorHandler.error(e);
}
else {
eh.error("","",ErrorHandlerWrapper.createXMLParseException(e));
}
// if an XNIException is thrown, just let it go.
// REVISIT: is this OK? or should we try to wrap it into SAXException?
}
public void fatalError(SAXParseException e) throws SAXException {
XMLErrorHandler eh = getErrorHandler();
if (eh instanceof ErrorHandlerWrapper) {
((ErrorHandlerWrapper)eh).fErrorHandler.fatalError(e);
}
else {
eh.fatalError("","",ErrorHandlerWrapper.createXMLParseException(e));
}
}
public void warning(SAXParseException e) throws SAXException {
XMLErrorHandler eh = getErrorHandler();
if (eh instanceof ErrorHandlerWrapper) {
((ErrorHandlerWrapper)eh).fErrorHandler.warning(e);
}
else {
eh.warning("","",ErrorHandlerWrapper.createXMLParseException(e));
}
}
protected abstract XMLErrorHandler getErrorHandler();
}