/*
* Copyright 2002-2006,2009 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.opensymphony.xwork2;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.Result;
import com.opensymphony.xwork2.UnknownHandler;
import com.opensymphony.xwork2.UnknownHandlerManager;
import com.opensymphony.xwork2.config.Configuration;
import com.opensymphony.xwork2.config.entities.ActionConfig;
import com.opensymphony.xwork2.config.entities.UnknownHandlerConfig;
import com.opensymphony.xwork2.inject.Container;
import com.opensymphony.xwork2.inject.Inject;
/**
* Default implementation of UnknownHandlerManager
*
* @see com.opensymphony.xwork2.UnknownHandlerManager
*/
public class DefaultUnknownHandlerManager implements UnknownHandlerManager {
protected ArrayList<UnknownHandler> unknownHandlers;
private Configuration configuration;
private Container container;
@Inject
public void setConfiguration(Configuration configuration) {
this.configuration = configuration;
build();
}
@Inject
public void setContainer(Container container) {
this.container = container;
build();
}
/**
* Builds a list of UnknowHandlers in the order specified by the configured "unknown-handler-stack".
* If "unknown-handler-stack" was not configured, all UnknowHandlers will be returned, in no specific order
*/
protected void build() {
if (configuration != null && container != null) {
List<UnknownHandlerConfig> unkownHandlerStack = configuration.getUnknownHandlerStack();
unknownHandlers = new ArrayList<UnknownHandler>();
if (unkownHandlerStack != null && !unkownHandlerStack.isEmpty()) {
//get UnknownHandlers in the specified order
for (UnknownHandlerConfig unknownHandlerConfig : unkownHandlerStack) {
UnknownHandler uh = container.getInstance(UnknownHandler.class, unknownHandlerConfig.getName());
unknownHandlers.add(uh);
}
} else {
//add all available UnknownHandlers
Set<String> unknowHandlerNames = container.getInstanceNames(UnknownHandler.class);
if (unknowHandlerNames != null) {
for (String unknowHandlerName : unknowHandlerNames) {
UnknownHandler uh = container.getInstance(UnknownHandler.class, unknowHandlerName);
unknownHandlers.add(uh);
}
}
}
}
}
/**
* Iterate over UnknownHandlers and return the result of the first one that can handle it
*/
public Result handleUnknownResult(ActionContext actionContext, String actionName, ActionConfig actionConfig, String resultCode) {
for (UnknownHandler unknownHandler : unknownHandlers) {
Result result = unknownHandler.handleUnknownResult(actionContext, actionName, actionConfig, resultCode);
if (result != null)
return result;
}
return null;
}
/**
* Iterate over UnknownHandlers and return the result of the first one that can handle it
*
* @throws NoSuchMethodException
*/
public Object handleUnknownMethod(Object action, String methodName) throws NoSuchMethodException {
for (UnknownHandler unknownHandler : unknownHandlers) {
Object result = unknownHandler.handleUnknownActionMethod(action, methodName);
if (result != null)
return result;
}
return null;
}
/**
* Iterate over UnknownHandlers and return the result of the first one that can handle it
*
* @throws NoSuchMethodException
*/
public ActionConfig handleUnknownAction(String namespace, String actionName) {
for (UnknownHandler unknownHandler : unknownHandlers) {
ActionConfig result = unknownHandler.handleUnknownAction(namespace, actionName);
if (result != null)
return result;
}
return null;
}
public boolean hasUnknownHandlers() {
return unknownHandlers != null && !unknownHandlers.isEmpty();
}
public List<UnknownHandler> getUnknownHandlers() {
return unknownHandlers;
}
}