Axis 2 example source code file (DescriptionBuilder.java)
The Axis 2 DescriptionBuilder.java source code
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.axis2.deployment;
import org.apache.axiom.om.OMAttribute;
import org.apache.axiom.om.OMElement;
import org.apache.axis2.AxisFault;
import org.apache.axis2.Constants;
import org.apache.axis2.builder.Builder;
import org.apache.axis2.context.ConfigurationContext;
import org.apache.axis2.description.AxisOperation;
import org.apache.axis2.description.AxisService;
import org.apache.axis2.description.Flow;
import org.apache.axis2.description.HandlerDescription;
import org.apache.axis2.description.Parameter;
import org.apache.axis2.description.ParameterInclude;
import org.apache.axis2.description.PolicyInclude;
import org.apache.axis2.description.WSDL2Constants;
import org.apache.axis2.description.PhaseRule;
import org.apache.axis2.engine.AxisConfiguration;
import org.apache.axis2.engine.MessageReceiver;
import org.apache.axis2.i18n.Messages;
import org.apache.axis2.transport.MessageFormatter;
import org.apache.axis2.util.Loader;
import org.apache.axis2.util.XMLUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.neethi.Policy;
import org.apache.neethi.PolicyEngine;
import org.apache.neethi.PolicyReference;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;
import java.io.InputStream;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
/**
* This class does the common tasks for all *Builder class.
*/
public class DescriptionBuilder implements DeploymentConstants {
private static final Log log = LogFactory.getLog(DescriptionBuilder.class);
protected ConfigurationContext configCtx;
protected AxisConfiguration axisConfig;
protected InputStream descriptionStream;
public DescriptionBuilder() {
}
public DescriptionBuilder(InputStream serviceInputStream,
ConfigurationContext configCtx) {
this.configCtx = configCtx;
this.descriptionStream = serviceInputStream;
this.axisConfig = this.configCtx.getAxisConfiguration();
}
public DescriptionBuilder(InputStream serviceInputStream,
AxisConfiguration axisConfig) {
this.descriptionStream = serviceInputStream;
this.axisConfig = axisConfig;
}
/**
* Creates OMElement for a given description document (axis2.xml ,
* services.xml and module.xml).
*
* @return Returns <code>OMElement .
* @throws javax.xml.stream.XMLStreamException
*
*/
public OMElement buildOM() throws XMLStreamException {
OMElement element = (OMElement) XMLUtils.toOM(descriptionStream);
element.build();
return element;
}
/**
* Loads default message receivers. First searches in Axiservice for the
* given mepURL, if not found searches in AxisConfiguration with the given
* mepURL.
*
* @param mepURL :
* can be null
* @param service :
* This can be null <code>AxisService
*/
protected MessageReceiver loadDefaultMessageReceiver(String mepURL, AxisService service) {
MessageReceiver messageReceiver;
if (mepURL == null) {
mepURL = WSDL2Constants.MEP_URI_IN_OUT;
}
if (service != null) {
messageReceiver = service.getMessageReceiver(mepURL);
if (messageReceiver != null) {
return messageReceiver;
}
}
return axisConfig.getMessageReceiver(mepURL);
}
/**
* Processes default message receivers specified either in axis2.xml or
* services.xml.
*
*/
protected HashMap processMessageReceivers(OMElement messageReceivers)
throws DeploymentException {
HashMap mr_mep = new HashMap();
Iterator msgReceivers = messageReceivers.getChildrenWithName(new QName(
TAG_MESSAGE_RECEIVER));
while (msgReceivers.hasNext()) {
OMElement msgReceiver = (OMElement) msgReceivers.next();
final OMElement tempMsgReceiver = msgReceiver;
MessageReceiver receiver = null;
try {
receiver = (MessageReceiver) org.apache.axis2.java.security.AccessController
.doPrivileged(new PrivilegedExceptionAction() {
public Object run()
throws org.apache.axis2.deployment.DeploymentException {
return loadMessageReceiver(
Thread.currentThread().getContextClassLoader(),
tempMsgReceiver);
}
});
} catch (PrivilegedActionException e) {
throw (DeploymentException) e.getException();
}
OMAttribute mepAtt = msgReceiver.getAttribute(new QName(TAG_MEP));
mr_mep.put(mepAtt.getAttributeValue(), receiver);
}
return mr_mep;
}
/**
* Processes default message receivers specified either in axis2.xml or
* services.xml.
*
*/
protected HashMap processMessageReceivers(ClassLoader loader,
OMElement element) throws DeploymentException {
HashMap meps = new HashMap();
Iterator iterator = element.getChildrenWithName(new QName(
TAG_MESSAGE_RECEIVER));
while (iterator.hasNext()) {
OMElement receiverElement = (OMElement) iterator.next();
MessageReceiver receiver = loadMessageReceiver(loader,
receiverElement);
OMAttribute mepAtt = receiverElement
.getAttribute(new QName(TAG_MEP));
meps.put(mepAtt.getAttributeValue(), receiver);
}
return meps;
}
protected MessageReceiver loadMessageReceiver(ClassLoader loader,
OMElement element) throws DeploymentException {
OMAttribute receiverName = element.getAttribute(new QName(
TAG_CLASS_NAME));
String className = receiverName.getAttributeValue();
MessageReceiver receiver = null;
try {
Class messageReceiver;
if ((className != null) && !"".equals(className)) {
messageReceiver = Loader.loadClass(loader, className);
receiver = (MessageReceiver) messageReceiver.newInstance();
}
} catch (ClassNotFoundException e) {
throw new DeploymentException(Messages.getMessage(
DeploymentErrorMsgs.ERROR_IN_LOADING_MESSAGE_RECEIVER,
"ClassNotFoundException", className), e);
} catch (IllegalAccessException e) {
throw new DeploymentException(Messages.getMessage(
DeploymentErrorMsgs.ERROR_IN_LOADING_MESSAGE_RECEIVER,
"IllegalAccessException", className), e);
} catch (InstantiationException e) {
throw new DeploymentException(Messages.getMessage(
DeploymentErrorMsgs.ERROR_IN_LOADING_MESSAGE_RECEIVER,
"InstantiationException", className), e);
}
return receiver;
}
/**
* Processes the message builders specified in axis2.xml or services.xml.
*
* @param messageBuildersElement
*/
protected HashMap processMessageBuilders(OMElement messageBuildersElement)
throws DeploymentException {
HashMap builderSelector = new HashMap();
Iterator msgBuilders = messageBuildersElement
.getChildrenWithName(new QName(TAG_MESSAGE_BUILDER));
while (msgBuilders.hasNext()) {
OMElement msgBuilderElement = (OMElement) msgBuilders.next();
OMAttribute builderName = msgBuilderElement.getAttribute(new QName(TAG_CLASS_NAME));
String className = builderName.getAttributeValue();
Class builderClass = null;
Builder builderObject;
try {
builderClass = findAndValidateSelectorClass(className,
DeploymentErrorMsgs.ERROR_LOADING_MESSAGE_BUILDER);
builderObject = (Builder) builderClass.newInstance();
} catch (PrivilegedActionException e) {
throw (DeploymentException) e.getException();
} catch (InstantiationException e) {
throw new DeploymentException(
"Cannot instantiate the specified Builder Class : "
+ builderClass.getName() + ".", e);
} catch (IllegalAccessException e) {
throw new DeploymentException(
"Cannot instantiate the specified Builder Class : "
+ builderClass.getName() + ".", e);
}
OMAttribute contentTypeAtt = msgBuilderElement
.getAttribute(new QName(TAG_CONTENT_TYPE));
builderSelector.put(contentTypeAtt.getAttributeValue(),
builderObject);
}
return builderSelector;
}
/**
* Processes the message builders specified in axis2.xml or services.xml.
*/
protected HashMap processMessageFormatters(OMElement messageFormattersElement)
throws DeploymentException {
HashMap messageFormatters = new HashMap();
Iterator msgFormatters = messageFormattersElement
.getChildrenWithName(new QName(TAG_MESSAGE_FORMATTER));
while (msgFormatters.hasNext()) {
OMElement msgFormatterElement = (OMElement) msgFormatters.next();
OMElement tempMsgFormatter = msgFormatterElement;
OMAttribute formatterName = tempMsgFormatter.getAttribute(new QName(TAG_CLASS_NAME));
String className = formatterName.getAttributeValue();
MessageFormatter formatterObject;
Class formatterClass = null;
try {
formatterClass = findAndValidateSelectorClass(className,
DeploymentErrorMsgs.ERROR_LOADING_MESSAGE_FORMATTER);
formatterObject = (MessageFormatter) formatterClass.newInstance();
} catch (PrivilegedActionException e) {
throw (DeploymentException) e.getException();
} catch (InstantiationException e) {
throw new DeploymentException(
"Cannot instantiate the specified Formatter Class : "
+ formatterClass.getName() + ".", e);
} catch (IllegalAccessException e) {
throw new DeploymentException(
"Cannot instantiate the specified Formatter Class : "
+ formatterClass.getName() + ".", e);
}
OMAttribute contentTypeAtt = msgFormatterElement
.getAttribute(new QName(TAG_CONTENT_TYPE));
messageFormatters.put(contentTypeAtt.getAttributeValue(),
formatterObject);
}
return messageFormatters;
}
protected Class findAndValidateSelectorClass(final String className, final String errorMsg)
throws PrivilegedActionException {
return (Class) org.apache.axis2.java.security.AccessController
.doPrivileged(new PrivilegedExceptionAction() {
public Object run()
throws org.apache.axis2.deployment.DeploymentException {
Class selectorClass;
try {
if ((className != null) && !"".equals(className)) {
selectorClass = Loader.loadClass(Thread.currentThread()
.getContextClassLoader(), className);
} else {
throw new DeploymentException(Messages.getMessage(errorMsg,
"Invalid Class Name",
className));
}
} catch (ClassNotFoundException e) {
throw new DeploymentException(Messages.getMessage(errorMsg,
"ClassNotFoundException",
className), e);
}
return selectorClass;
}
});
}
/**
* Processes flow elements in services.xml .
*
* @param flowelement <code>OMElement
* @return Returns Flow.
* @throws DeploymentException <code>DeploymentException
*/
protected Flow processFlow(OMElement flowelement, ParameterInclude parent)
throws DeploymentException {
Flow flow = new Flow();
if (flowelement == null) {
return flow;
}
Iterator handlers = flowelement.getChildrenWithName(new QName(
TAG_HANDLER));
while (handlers.hasNext()) {
OMElement handlerElement = (OMElement) handlers.next();
flow.addHandler(processHandler(handlerElement, parent));
}
return flow;
}
protected String[] processSupportedPolicyNamespaces(
OMElement supportedPolicyElements) {
OMAttribute namespaces = supportedPolicyElements
.getAttribute(new QName(TAG_NAMESPACES));
if (namespaces != null) {
String value = namespaces.getAttributeValue();
if (value.trim().length() != 0) {
return value.split(" ");
}
}
return null;
}
protected QName[] getLocalPolicyAssertionNames(OMElement localPolicyAssertionsElement) {
Iterator iterator = localPolicyAssertionsElement.getChildElements();
if (! iterator.hasNext()) {
return null;
}
ArrayList qnames = new ArrayList();
OMElement childElement;
for (; iterator.hasNext();) {
childElement = (OMElement) iterator.next();
qnames.add(childElement.getQName());
}
QName[] buffer = new QName[qnames.size()];
System.arraycopy(qnames.toArray(), 0, buffer, 0, qnames.size());
return buffer;
}
protected HandlerDescription processHandler(OMElement handler_element, ParameterInclude parent)
throws DeploymentException
{
return processHandler(handler_element, parent, null);
}
/**
* Processes Handler element.
*
* @param handler_element <code>OMElement
* @return Returns HandlerDescription.
* @throws DeploymentException <code>DeploymentException
*/
protected HandlerDescription processHandler(OMElement handler_element,
ParameterInclude parent,
String containingPhase)
throws DeploymentException {
// Setting handler name
OMAttribute name_attribute = handler_element.getAttribute(new QName(
ATTRIBUTE_NAME));
if (name_attribute == null || name_attribute.getAttributeValue().equals("")) {
throw new DeploymentException(Messages.getMessage(
DeploymentErrorMsgs.INVALID_HANDLER, "Unknown", "Name missing"));
}
HandlerDescription handler = new HandlerDescription(name_attribute.getAttributeValue());
// Setting handler class name
OMAttribute class_attribute = handler_element.getAttribute(new QName(
TAG_CLASS_NAME));
if (class_attribute == null) {
throw new DeploymentException((Messages.getMessage(
DeploymentErrorMsgs.INVALID_HANDLER, name_attribute.getAttributeValue(),
"class name is missing")));
} else {
handler.setClassName(class_attribute.getAttributeValue());
}
// processing phase rules (order)
OMElement order_element = handler_element
.getFirstChildWithName(new QName(TAG_ORDER));
PhaseRule rules = handler.getRules();
if (order_element == null) {
if (containingPhase == null) {
// TODO : Include more information (which handler?) in message!
throw new DeploymentException((Messages.getMessage(
DeploymentErrorMsgs.INVALID_HANDLER, name_attribute.getAttributeValue(),
"phase rule has not been specified")));
}
rules.setPhaseName(containingPhase);
} else {
Iterator order_itr = order_element.getAllAttributes();
while (order_itr.hasNext()) {
OMAttribute orderAttribute = (OMAttribute) order_itr.next();
String name = orderAttribute.getQName().getLocalPart();
String value = orderAttribute.getAttributeValue();
if (TAG_AFTER.equals(name)) {
rules.setAfter(value);
} else if (TAG_BEFORE.equals(name)) {
rules.setBefore(value);
} else if (TAG_PHASE.equals(name)) {
rules.setPhaseName(value);
} else if (TAG_PHASE_FIRST.equals(name)) {
String boolval = getValue(value);
if (boolval.equals(BOOLEAN_TRUE)) {
rules.setPhaseFirst(true);
} else if (boolval.equals(BOOLEAN_FALSE)) {
rules.setPhaseFirst(false);
}
} else if (TAG_PHASE_LAST.equals(name)) {
String boolval = getValue(value);
if (boolval.equals(BOOLEAN_TRUE)) {
rules.setPhaseLast(true);
} else if (boolval.equals(BOOLEAN_FALSE)) {
rules.setPhaseLast(false);
}
}
}
Iterator parameters = handler_element
.getChildrenWithName(new QName(TAG_PARAMETER));
try {
processParameters(parameters, handler, parent);
} catch (AxisFault axisFault) {
throw new DeploymentException(axisFault);
}
}
handler.setParent(parent);
return handler;
}
protected void processOperationModuleRefs(Iterator moduleRefs,
AxisOperation operation) throws DeploymentException {
try {
while (moduleRefs.hasNext()) {
OMElement moduleref = (OMElement) moduleRefs.next();
OMAttribute moduleRefAttribute = moduleref
.getAttribute(new QName(TAG_REFERENCE));
if (moduleRefAttribute != null) {
String refName = moduleRefAttribute.getAttributeValue();
if (axisConfig.getModule(refName) == null) {
throw new DeploymentException(Messages.getMessage(
DeploymentErrorMsgs.MODULE_NOT_FOUND, refName));
} else {
operation.addModule(refName);
}
}
}
} catch (AxisFault axisFault) {
throw new DeploymentException(Messages.getMessage(
DeploymentErrorMsgs.MODULE_NOT_FOUND, axisFault
.getMessage()), axisFault);
}
}
/**
* Gets the Parameter object from the OM.
*
* @param parameters <code>Parameter
* @param parameterInclude <code>ParameterInclude
* @param parent <code>ParameterInclude
*/
protected void processParameters(Iterator parameters,
ParameterInclude parameterInclude,
ParameterInclude parent)
throws DeploymentException {
while (parameters.hasNext()) {
// this is to check whether some one has locked the parmeter at the
// top level
OMElement parameterElement = (OMElement) parameters.next();
Parameter parameter = new Parameter();
// setting parameterElement
parameter.setParameterElement(parameterElement);
// setting parameter Name
OMAttribute paramName = parameterElement.getAttribute(new QName(ATTRIBUTE_NAME));
if (paramName == null) {
throw new DeploymentException(Messages.getMessage(
DeploymentErrorMsgs.BAD_PARAMETER_ARGUMENT,
parameterElement.toString()));
}
parameter.setName(paramName.getAttributeValue());
// setting parameter Value (the child element of the parameter)
OMElement paramValue = parameterElement.getFirstElement();
if (paramValue != null) {
parameter.setValue(parameterElement);
parameter.setParameterType(Parameter.OM_PARAMETER);
} else {
String paratextValue = parameterElement.getText();
parameter.setValue(paratextValue);
parameter.setParameterType(Parameter.TEXT_PARAMETER);
}
// setting locking attribute
OMAttribute paramLocked = parameterElement.getAttribute(new QName(
ATTRIBUTE_LOCKED));
Parameter parentParam = null;
if (parent != null) {
parentParam = parent.getParameter(parameter.getName());
}
if (paramLocked != null) {
String lockedValue = paramLocked.getAttributeValue();
if (BOOLEAN_TRUE.equals(lockedValue)) {
// if the parameter is locked at some level parameter value
// replace by that
if ((parent != null)
&& parent.isParameterLocked(parameter.getName())) {
throw new DeploymentException(Messages.getMessage(
DeploymentErrorMsgs.CONFIG_NOT_FOUND, parameter
.getName()));
} else {
parameter.setLocked(true);
}
} else {
parameter.setLocked(false);
}
}
try {
if (parent != null) {
if ((parentParam == null)
|| !parent.isParameterLocked(parameter.getName())) {
parameterInclude.addParameter(parameter);
}
} else {
parameterInclude.addParameter(parameter);
}
} catch (AxisFault axisFault) {
throw new DeploymentException(axisFault);
}
}
}
/**
* Populate the AxisOperation with details from the actionMapping,
* outputActionMapping and faultActionMapping elements from the operation
* element.
*
* @param operation
* @param op_descrip
*/
protected void processActionMappings(OMElement operation,
AxisOperation op_descrip) {
Iterator mappingIterator = operation.getChildrenWithName(new QName(
Constants.ACTION_MAPPING));
ArrayList mappingList = new ArrayList();
while (mappingIterator.hasNext()) {
OMElement mappingElement = (OMElement) mappingIterator.next();
String inputActionString = mappingElement.getText().trim();
if (log.isTraceEnabled()) {
log.trace("Input Action Mapping found: " + inputActionString);
}
if (!"".equals(inputActionString)) {
mappingList.add(inputActionString);
} else {
if (log.isTraceEnabled()) {
log.trace("Zero length input action string found. Not added to mapping");
}
}
}
op_descrip.setWsamappingList(mappingList);
OMElement outputAction = operation.getFirstChildWithName(new QName(
Constants.OUTPUT_ACTION_MAPPING));
if ((outputAction != null) && (outputAction.getText() != null)) {
String outputActionString = outputAction.getText().trim();
if (log.isTraceEnabled()) {
log.trace("Output Action Mapping found: " + outputActionString);
}
op_descrip.setOutputAction(outputActionString);
}
Iterator faultActionsIterator = operation
.getChildrenWithName(new QName(Constants.FAULT_ACTION_MAPPING));
while (faultActionsIterator.hasNext()) {
OMElement faultMappingElement = (OMElement) faultActionsIterator
.next();
String faultActionString = faultMappingElement.getText().trim();
String faultActionName = faultMappingElement
.getAttributeValue(new QName(Constants.FAULT_ACTION_NAME));
if (faultActionName != null && faultActionString != null) {
if (log.isTraceEnabled()) {
log.trace("Fault Action Mapping found: " + faultActionName
+ ", " + faultActionString);
}
op_descrip.addFaultAction(faultActionName, faultActionString);
}
}
}
protected void processPolicyElements(int type, Iterator policyElements,
PolicyInclude policyInclude) {
while (policyElements.hasNext()) {
Policy p = PolicyEngine
.getPolicy((OMElement) policyElements.next());
policyInclude.addPolicyElement(type, p);
}
}
protected void processPolicyRefElements(int type,
Iterator policyRefElements,
PolicyInclude policyInclude) {
while (policyRefElements.hasNext()) {
PolicyReference policyReference = PolicyEngine
.getPolicyReference((OMElement) policyRefElements.next());
policyInclude.addPolicyRefElement(type, policyReference);
}
}
/**
* Gets the short file name. Short file name is the name before the dot.
*
* @param fileName
* @return Returns String.
*/
public static String getShortFileName(String fileName) {
char seperator = SEPARATOR_DOT;
String value;
int index = fileName.lastIndexOf(seperator);
if (index > 0) {
value = fileName.substring(0, index);
return value;
}
return fileName;
}
/**
* Gets the value of an attribute. eg xsd:anyVal --> anyVal
*
* @return Returns String.
*/
protected String getValue(String in) {
char seperator = SEPARATOR_COLON;
String value;
int index = in.indexOf(seperator);
if (index > 0) {
value = in.substring(index + 1, in.length());
return value;
}
return in;
}
}
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