/*
* Copyright 1999,2005 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 org.apache.xmlrpc.parser;
import java.util.ArrayList;
import java.util.List;
import javax.xml.namespace.QName;
import org.apache.ws.commons.util.NamespaceContextImpl;
import org.apache.xmlrpc.common.TypeFactory;
import org.apache.xmlrpc.common.XmlRpcStreamConfig;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
/** A SAX parser for an {@link org.apache.xmlrpc.client.XmlRpcClient}'s
* request.
*/
public class XmlRpcRequestParser extends RecursiveTypeParserImpl {
private int level;
private boolean inMethodName;
private String methodName;
private List params;
/** Creates a new instance, which parses a clients request.
* @param pConfig The client configuration.
* @param pTypeFactory The type factory.
*/
public XmlRpcRequestParser(XmlRpcStreamConfig pConfig, TypeFactory pTypeFactory) {
super(pConfig, new NamespaceContextImpl(), pTypeFactory);
}
protected void addResult(Object pResult) {
params.add(pResult);
}
public void startDocument() throws SAXException {
super.startDocument();
level = 0;
inMethodName = false;
methodName = null;
params = null;
}
public void characters(char[] pChars, int pOffset, int pLength) throws SAXException {
if (inMethodName) {
String s = new String(pChars, pOffset, pLength);
methodName = methodName == null ? s : methodName + s;
} else {
super.characters(pChars, pOffset, pLength);
}
}
public void startElement(String pURI, String pLocalName, String pQName,
Attributes pAttrs) throws SAXException {
switch (level++) {
case 0:
if (!"".equals(pURI) || !"methodCall".equals(pLocalName)) {
throw new SAXParseException("Expected root element 'methodCall', got "
+ new QName(pURI, pLocalName),
getDocumentLocator());
}
break;
case 1:
if (methodName == null) {
if ("".equals(pURI) && "methodName".equals(pLocalName)) {
inMethodName = true;
} else {
throw new SAXParseException("Expected methodName element, got "
+ new QName(pURI, pLocalName),
getDocumentLocator());
}
} else if (params == null) {
if ("".equals(pURI) && "params".equals(pLocalName)) {
params = new ArrayList();
} else {
throw new SAXParseException("Expected params element, got "
+ new QName(pURI, pLocalName),
getDocumentLocator());
}
} else {
throw new SAXParseException("Expected /methodCall, got "
+ new QName(pURI, pLocalName),
getDocumentLocator());
}
break;
case 2:
if (!"".equals(pURI) || !"param".equals(pLocalName)) {
throw new SAXParseException("Expected param element, got "
+ new QName(pURI, pLocalName),
getDocumentLocator());
}
break;
case 3:
if (!"".equals(pURI) || !"value".equals(pLocalName)) {
throw new SAXParseException("Expected value element, got "
+ new QName(pURI, pLocalName),
getDocumentLocator());
}
startValueTag();
break;
default:
super.startElement(pURI, pLocalName, pQName, pAttrs);
break;
}
}
public void endElement(String pURI, String pLocalName, String pQName) throws SAXException {
switch(--level) {
case 0:
break;
case 1:
if (inMethodName) {
if ("".equals(pURI) && "methodName".equals(pLocalName)) {
if (methodName == null) {
methodName = "";
}
} else {
throw new SAXParseException("Expected /methodName, got "
+ new QName(pURI, pLocalName),
getDocumentLocator());
}
inMethodName = false;
} else if (!"".equals(pURI) || !"params".equals(pLocalName)) {
throw new SAXParseException("Expected /params, got "
+ new QName(pURI, pLocalName),
getDocumentLocator());
}
break;
case 2:
if (!"".equals(pURI) || !"param".equals(pLocalName)) {
throw new SAXParseException("Expected /param, got "
+ new QName(pURI, pLocalName),
getDocumentLocator());
}
break;
case 3:
if (!"".equals(pURI) || !"value".equals(pLocalName)) {
throw new SAXParseException("Expected /value, got "
+ new QName(pURI, pLocalName),
getDocumentLocator());
}
endValueTag();
break;
default:
super.endElement(pURI, pLocalName, pQName);
break;
}
}
/** Returns the method name being invoked.
* @return Requested method name.
*/
public String getMethodName() { return methodName; }
/** Returns the parameter list.
* @return Parameter list.
*/
public List getParams() { return params; }
}