/**
* Copyright (C) 2010 Orbeon, Inc.
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU Lesser General Public License as published by the Free Software Foundation; either version
* 2.1 of the License, or (at your option) any later version.
*
* This program 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 Lesser General Public License for more details.
*
* The full text of the license is available at http://www.gnu.org/copyleft/lesser.html
*/
package org.orbeon.oxf.processor;
import org.apache.log4j.Logger;
import org.orbeon.oxf.cache.OutputCacheKey;
import org.orbeon.oxf.pipeline.api.PipelineContext;
import org.orbeon.oxf.xml.XMLReceiver;
import org.orbeon.oxf.util.LoggerFactory;
import org.orbeon.oxf.xml.ForwardingXMLReceiver;
import org.orbeon.oxf.xml.XMLReceiverAdapter;
import org.xml.sax.Attributes;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
public class SAXLoggerProcessor extends ProcessorImpl {
static private Logger logger = LoggerFactory.createLogger(SAXLoggerProcessor.class);
public SAXLoggerProcessor() {
addInputInfo(new ProcessorInputOutputInfo(INPUT_DATA));
addOutputInfo(new ProcessorInputOutputInfo(OUTPUT_DATA));
}
public ProcessorOutput createOutput(String name) {
ProcessorOutput output = new ProcessorOutputImpl(SAXLoggerProcessor.this, name) {
public void readImpl(PipelineContext context, XMLReceiver xmlReceiver) {
readInputAsSAX(context, INPUT_DATA, new DebugXMLReceiver(xmlReceiver));
}
@Override
public OutputCacheKey getKeyImpl(PipelineContext pipelineContext) {
return getInputKey(pipelineContext, getInputByName(INPUT_DATA));
}
@Override
public Object getValidityImpl(PipelineContext pipelineContext) {
return getInputValidity(pipelineContext, getInputByName(INPUT_DATA));
}
};
addOutput(name, output);
return output;
}
public static class DebugXMLReceiver extends ForwardingXMLReceiver {
private Locator locator;
private int level = 0;
public DebugXMLReceiver() {
this(new XMLReceiverAdapter());
}
public DebugXMLReceiver(XMLReceiver xmlReceiver) {
super(xmlReceiver);
}
@Override
public void characters(char[] chars, int start, int length) throws SAXException {
log("characters('" + new String(chars, start, length) + "', " + start + ", " + length + "')");
super.characters(chars, start, length);
}
@Override
public void endDocument() throws SAXException {
log("endDocument()");
super.endDocument();
}
@Override
public void endElement(String uri, String localname, String qName) throws SAXException {
level--;
log("endElement('" + uri + "', '" + localname + "', '" + qName + "')");
super.endElement(uri, localname, qName);
}
@Override
public void endPrefixMapping(String s) throws SAXException {
log("endPrefixMapping('" + s + "')");
super.endPrefixMapping(s);
}
@Override
public void ignorableWhitespace(char[] chars, int start, int length) throws SAXException {
log("ignorableWhitespace('" + new String(chars, start, length) + "', " + start + ", " + length + ")");
super.ignorableWhitespace(chars, start, length);
}
@Override
public void processingInstruction(String s, String s1) throws SAXException {
log("processingInstruction('" + s + "', '" + s1 + "')");
super.processingInstruction(s, s1);
}
@Override
public void setDocumentLocator(Locator locator) {
logger.info("setDocumentLocator(...)");
this.locator = locator;
super.setDocumentLocator(locator);
}
@Override
public void skippedEntity(String s) throws SAXException {
log("skippedEntity('" + s + "')");
super.skippedEntity(s);
}
@Override
public void startDocument() throws SAXException {
log("startDocument()");
super.startDocument();
}
@Override
public void startElement(String uri, String localname, String qName, Attributes attributes) throws SAXException {
final StringBuilder message = new StringBuilder("startElement('" + uri + "', '" + localname + "', '" + qName + "'");
for (int i = 0; i < attributes.getLength(); i++)
message.append(", ('" + attributes.getURI(i) + "', '" + attributes.getLocalName(i)
+ "', '" + attributes.getQName(i) + "', '" + attributes.getValue(i) + "')");
message.append(")");
log(message.toString());
super.startElement(uri, localname, qName, attributes);
level++;
}
@Override
public void startPrefixMapping(String s, String s1) throws SAXException {
log("startPrefixMapping('" + s + "', '" + s1 + "')");
super.startPrefixMapping(s, s1);
}
@Override
public void comment(char[] chars, int start, int length) throws SAXException {
log("comment('" + new String(chars, start, length) + "')");
super.comment(chars, start, length);
}
@Override
public void startDTD(String name, String publicId, String systemId) throws SAXException {
log("startDTD('" + name + ", " + publicId + ", " + systemId + "')");
super.startDTD(name, publicId, systemId);
}
@Override
public void endDTD() throws SAXException {
log("endDTD()");
super.endDTD();
}
@Override
public void startEntity(String name) throws SAXException {
log("startEntity('" + name + "')");
super.startEntity(name);
}
@Override
public void endEntity(String name) throws SAXException {
log("endEntity('" + name + "')");
super.endEntity(name);
}
@Override
public void startCDATA() throws SAXException {
log("startCDATA()");
super.startCDATA();
}
@Override
public void endCDATA() throws SAXException {
log("endCDATA()");
super.endCDATA();
}
private void log(String message) {
final StringBuilder builder = new StringBuilder(getLogSpaces());
builder.append(message);
addLocatorInfo(builder);
logger.info(builder.toString());
}
private void addLocatorInfo(StringBuilder message) {
if (locator != null) {
message.append(" [");
if (locator.getSystemId() != null)
message.append(locator.getSystemId());
message.append(", ");
message.append(Integer.toString(locator.getLineNumber()));
message.append(", ");
message.append(Integer.toString(locator.getColumnNumber()));
message.append("]");
}
}
private String getLogSpaces() {
final StringBuilder sb = new StringBuilder();
for (int i = 0; i < level; i++)
sb.append(" ");
return sb.toString();
}
}
}