/*
* Copyright (c) 2001-2007, Inversoft Inc., All Rights Reserved
*
* 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.primeframework.mvc.scope;
import javax.servlet.ServletException;
import java.io.IOException;
import java.util.List;
import org.primeframework.mvc.action.ActionInvocation;
import org.primeframework.mvc.action.ActionInvocationStore;
import org.primeframework.mvc.action.config.ActionConfiguration;
import org.primeframework.mvc.util.ReflectionUtils;
import org.primeframework.mvc.workflow.WorkflowChain;
import com.google.inject.Inject;
/**
* This class implements the scope storage workflow that handles scope storage after the request is finished.
*
* @author Brian Pontarelli
*/
public class DefaultScopeStorageWorkflow implements ScopeStorageWorkflow {
private final ActionInvocationStore actionInvocationStore;
private final ScopeProvider scopeProvider;
@Inject
public DefaultScopeStorageWorkflow(ActionInvocationStore actionInvocationStore, ScopeProvider scopeProvider) {
this.actionInvocationStore = actionInvocationStore;
this.scopeProvider = scopeProvider;
}
/**
* Handles the incoming HTTP request for scope values.
*
* @param chain The workflow chain.
*/
public void perform(WorkflowChain chain) throws IOException, ServletException {
ActionInvocation actionInvocation = actionInvocationStore.getCurrent();
Object action = actionInvocation.action;
// Handle storing scoped members from the action
ActionConfiguration actionConfiguration = actionInvocation.configuration;
List<ScopeField> scopeFields = (actionConfiguration != null) ? actionConfiguration.scopeFields : null;
if (action != null && scopeFields != null && scopeFields.size() > 0) {
storeScopedMembers(action, scopeFields);
}
chain.continueWorkflow();
}
/**
* Stores all of the values from the action from into the scopes.
*
* @param action The action to get the values from.
* @param scopeFields The scope fields.
*/
@SuppressWarnings("unchecked")
protected void storeScopedMembers(Object action, List<ScopeField> scopeFields) {
for (ScopeField scopeField : scopeFields) {
Scope scope = scopeProvider.lookup(scopeField.annotationType);
Object value = ReflectionUtils.getField(scopeField.field, action);
scope.set(scopeField.field.getName(), value, scopeField.annotation);
}
}
}