/*
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.runtime.module.extension.internal.capability.xml.schema.model;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.XMLFilterImpl;
public class NamespaceFilter extends XMLFilterImpl {
private String usedNamespaceUri;
private String prefix;
private boolean addNamespace;
// State variable
private boolean addedNamespace = false;
public NamespaceFilter(String prefix, String namespaceUri, boolean addNamespace) {
super();
if (addNamespace) {
this.prefix = prefix;
this.usedNamespaceUri = namespaceUri;
} else {
this.prefix = "";
this.usedNamespaceUri = "";
}
this.addNamespace = addNamespace;
}
@Override
public void startDocument() throws SAXException {
super.startDocument();
if (addNamespace) {
startControlledPrefixMapping();
}
}
@Override
public void startElement(String arg0, String arg1, String arg2, Attributes arg3) throws SAXException {
super.startElement(this.usedNamespaceUri, arg1, arg2, arg3);
}
@Override
public void endElement(String arg0, String arg1, String arg2) throws SAXException {
super.endElement(this.usedNamespaceUri, arg1, arg2);
}
@Override
public void startPrefixMapping(String prefix, String url) throws SAXException {
super.startPrefixMapping(prefix, url);
if (addNamespace) {
this.startControlledPrefixMapping();
} else {
// Remove the namespace, i.e. don´t call startPrefixMapping for parent!
}
}
private void startControlledPrefixMapping() throws SAXException {
if (this.addNamespace && !this.addedNamespace) {
// We should add namespace since it is set and has not yet been done.
super.startPrefixMapping(this.prefix, this.usedNamespaceUri);
// Make sure we dont do it twice
this.addedNamespace = true;
}
}
}