mirror of
https://github.com/Alfresco/alfresco-community-repo.git
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Merged 5.1.N (5.1.2) to 5.2.N (5.2.1)
125605 rmunteanu: Merged 5.1.1 (5.1.1) to 5.1.N (5.1.2)
125498 slanglois: MNT-16155 Update source headers - remove svn:eol-style property on Java and JSP source files
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/DEV/5.2.N/root@125783 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Raluca Munteanu
@@ -1,213 +1,213 @@
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package org.alfresco.repo.policy;
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import java.lang.reflect.InvocationHandler;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.Map;
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import org.alfresco.repo.policy.Behaviour.NotificationFrequency;
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import org.alfresco.repo.policy.Policy.Arg;
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import org.alfresco.repo.transaction.AlfrescoTransactionSupport;
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/**
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* Factory for creating transaction-aware behaviour invocation handlers.
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*/
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public class TransactionInvocationHandlerFactory
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{
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/** Transaction Key for Behaviour Execution state */
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private final static String EXECUTED_KEY = TransactionHandler.class.getName() + ".executed";
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/** Transaction behaviour Queue */
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private TransactionBehaviourQueue queue;
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/**
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* Construct
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*
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* @param queue behaviour queue
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*/
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public TransactionInvocationHandlerFactory(TransactionBehaviourQueue queue)
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{
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this.queue = queue;
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}
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/**
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* Create Invocation Handler
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*
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* @param <P> P extends Policy
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* @param behaviour Behaviour
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* @param definition PolicyDefinition<P>
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* @param policyInterface P
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* @return invocation handler
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*/
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public <P extends Policy> InvocationHandler createHandler(Behaviour behaviour, PolicyDefinition<P> definition, P policyInterface)
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{
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return new TransactionHandler<P>(behaviour, definition, policyInterface);
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}
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/**
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* Transaction Invocation Handler.
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*
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* @param <P> policy interface
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*/
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private class TransactionHandler<P extends Policy> implements InvocationHandler
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{
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private Behaviour behaviour;
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private PolicyDefinition<P> definition;
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private P policyInterface;
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/**
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* Construct
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*/
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public TransactionHandler(Behaviour behaviour, PolicyDefinition<P> definition, P policyInterface)
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{
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this.behaviour = behaviour;
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this.definition = definition;
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this.policyInterface = policyInterface;
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}
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/* (non-Javadoc)
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* @see java.lang.reflect.InvocationHandler#invoke(java.lang.Object, java.lang.reflect.Method, java.lang.Object[])
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*/
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@SuppressWarnings("unchecked")
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public Object invoke(Object proxy, Method method, Object[] args) throws Throwable
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{
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// Handle Object level methods
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if (method.getName().equals("toString"))
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{
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return policyInterface.toString();
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}
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else if (method.getName().equals("hashCode"))
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{
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return policyInterface.hashCode();
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}
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else if (method.getName().equals("equals"))
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{
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return policyInterface.equals(args[0]);
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}
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// Invoke policy based on its notification frequency
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Object result = null;
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if (behaviour.getNotificationFrequency().equals(NotificationFrequency.FIRST_EVENT))
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{
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Map<ExecutionInstanceKey, Object> executedBehaviours = (Map<ExecutionInstanceKey, Object>)AlfrescoTransactionSupport.getResource(EXECUTED_KEY);
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if (executedBehaviours == null)
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{
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executedBehaviours = new HashMap<ExecutionInstanceKey, Object>();
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AlfrescoTransactionSupport.bindResource(EXECUTED_KEY, executedBehaviours);
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}
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ExecutionInstanceKey key = new ExecutionInstanceKey(behaviour, definition.getArguments(), args);
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if (executedBehaviours.containsKey(key) == false)
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{
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// Invoke behavior for first time and mark as executed
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try
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{
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result = method.invoke(policyInterface, args);
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executedBehaviours.put(key, result);
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}
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catch (InvocationTargetException e)
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{
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throw e.getTargetException();
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}
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}
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else
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{
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// Return result of previous execution
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result = executedBehaviours.get(key);
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}
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}
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else if (behaviour.getNotificationFrequency().equals(NotificationFrequency.TRANSACTION_COMMIT))
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{
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// queue policy invocation for end of transaction
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queue.queue(behaviour, definition, policyInterface, method, args);
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}
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else
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{
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// Note: shouldn't get here
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throw new PolicyException("Invalid Notification frequency " + behaviour.getNotificationFrequency());
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}
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return result;
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}
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}
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/**
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* Execution Instance Key - to uniquely identify an ExecutionContext
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*/
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private class ExecutionInstanceKey
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{
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public ExecutionInstanceKey(Behaviour behaviour, Arg[] argDefs, Object[] args)
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{
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this.behaviour = behaviour;
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for (int i = 0; i < argDefs.length; i++)
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{
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if (argDefs[i].equals(Arg.KEY))
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{
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keys.add(args[i]);
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}
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}
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}
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Behaviour behaviour;
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ArrayList<Object> keys = new ArrayList<Object>();
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/**
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* @see java.lang.Object#hashCode()
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*/
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@Override
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public int hashCode()
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{
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int key = behaviour.hashCode();
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for (int i = 0; i < keys.size(); i++)
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{
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key = (37 * key) + keys.get(i).hashCode();
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}
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return key;
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}
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/**
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* @see java.lang.Object#equals(java.lang.Object)
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*/
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@Override
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public boolean equals(Object obj)
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{
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if (this == obj)
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{
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return true;
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}
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if (obj instanceof ExecutionInstanceKey)
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{
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ExecutionInstanceKey that = (ExecutionInstanceKey) obj;
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if(this.behaviour.equals(that.behaviour))
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{
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if(keys.size() != that.keys.size())
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{
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// different number of keys
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return false;
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}
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if(keys.containsAll(that.keys))
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{
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// yes keys are equal
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return true;
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}
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}
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// behavior is different
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return false;
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}
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else
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{
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// Object is wrong type
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return false;
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}
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} // equals
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} // ExecutionInstanceKey
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package org.alfresco.repo.policy;
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import java.lang.reflect.InvocationHandler;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.Map;
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import org.alfresco.repo.policy.Behaviour.NotificationFrequency;
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import org.alfresco.repo.policy.Policy.Arg;
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import org.alfresco.repo.transaction.AlfrescoTransactionSupport;
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/**
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* Factory for creating transaction-aware behaviour invocation handlers.
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*/
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public class TransactionInvocationHandlerFactory
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{
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/** Transaction Key for Behaviour Execution state */
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private final static String EXECUTED_KEY = TransactionHandler.class.getName() + ".executed";
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/** Transaction behaviour Queue */
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private TransactionBehaviourQueue queue;
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/**
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* Construct
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*
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* @param queue behaviour queue
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*/
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public TransactionInvocationHandlerFactory(TransactionBehaviourQueue queue)
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{
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this.queue = queue;
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}
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/**
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* Create Invocation Handler
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*
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* @param <P> P extends Policy
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* @param behaviour Behaviour
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* @param definition PolicyDefinition<P>
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* @param policyInterface P
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* @return invocation handler
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*/
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public <P extends Policy> InvocationHandler createHandler(Behaviour behaviour, PolicyDefinition<P> definition, P policyInterface)
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{
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return new TransactionHandler<P>(behaviour, definition, policyInterface);
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}
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/**
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* Transaction Invocation Handler.
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*
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* @param <P> policy interface
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*/
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private class TransactionHandler<P extends Policy> implements InvocationHandler
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{
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private Behaviour behaviour;
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private PolicyDefinition<P> definition;
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private P policyInterface;
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/**
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* Construct
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*/
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public TransactionHandler(Behaviour behaviour, PolicyDefinition<P> definition, P policyInterface)
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{
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this.behaviour = behaviour;
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this.definition = definition;
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this.policyInterface = policyInterface;
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}
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/* (non-Javadoc)
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* @see java.lang.reflect.InvocationHandler#invoke(java.lang.Object, java.lang.reflect.Method, java.lang.Object[])
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*/
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@SuppressWarnings("unchecked")
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public Object invoke(Object proxy, Method method, Object[] args) throws Throwable
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{
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// Handle Object level methods
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if (method.getName().equals("toString"))
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{
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return policyInterface.toString();
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}
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else if (method.getName().equals("hashCode"))
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{
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return policyInterface.hashCode();
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}
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else if (method.getName().equals("equals"))
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{
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return policyInterface.equals(args[0]);
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}
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// Invoke policy based on its notification frequency
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Object result = null;
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if (behaviour.getNotificationFrequency().equals(NotificationFrequency.FIRST_EVENT))
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{
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Map<ExecutionInstanceKey, Object> executedBehaviours = (Map<ExecutionInstanceKey, Object>)AlfrescoTransactionSupport.getResource(EXECUTED_KEY);
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if (executedBehaviours == null)
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{
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executedBehaviours = new HashMap<ExecutionInstanceKey, Object>();
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AlfrescoTransactionSupport.bindResource(EXECUTED_KEY, executedBehaviours);
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}
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ExecutionInstanceKey key = new ExecutionInstanceKey(behaviour, definition.getArguments(), args);
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if (executedBehaviours.containsKey(key) == false)
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{
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// Invoke behavior for first time and mark as executed
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try
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{
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result = method.invoke(policyInterface, args);
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executedBehaviours.put(key, result);
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}
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catch (InvocationTargetException e)
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{
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throw e.getTargetException();
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}
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}
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else
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{
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// Return result of previous execution
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result = executedBehaviours.get(key);
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}
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}
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else if (behaviour.getNotificationFrequency().equals(NotificationFrequency.TRANSACTION_COMMIT))
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{
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// queue policy invocation for end of transaction
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queue.queue(behaviour, definition, policyInterface, method, args);
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}
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else
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{
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// Note: shouldn't get here
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throw new PolicyException("Invalid Notification frequency " + behaviour.getNotificationFrequency());
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}
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return result;
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}
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}
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/**
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* Execution Instance Key - to uniquely identify an ExecutionContext
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*/
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private class ExecutionInstanceKey
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{
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public ExecutionInstanceKey(Behaviour behaviour, Arg[] argDefs, Object[] args)
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{
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this.behaviour = behaviour;
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for (int i = 0; i < argDefs.length; i++)
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{
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if (argDefs[i].equals(Arg.KEY))
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{
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keys.add(args[i]);
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}
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}
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}
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Behaviour behaviour;
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ArrayList<Object> keys = new ArrayList<Object>();
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/**
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* @see java.lang.Object#hashCode()
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*/
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@Override
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public int hashCode()
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{
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int key = behaviour.hashCode();
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for (int i = 0; i < keys.size(); i++)
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{
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key = (37 * key) + keys.get(i).hashCode();
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}
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return key;
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}
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/**
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* @see java.lang.Object#equals(java.lang.Object)
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*/
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@Override
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public boolean equals(Object obj)
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{
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if (this == obj)
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{
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return true;
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}
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if (obj instanceof ExecutionInstanceKey)
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{
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ExecutionInstanceKey that = (ExecutionInstanceKey) obj;
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if(this.behaviour.equals(that.behaviour))
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{
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if(keys.size() != that.keys.size())
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{
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// different number of keys
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return false;
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}
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if(keys.containsAll(that.keys))
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{
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// yes keys are equal
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return true;
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}
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}
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// behavior is different
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return false;
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}
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else
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{
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// Object is wrong type
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return false;
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}
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} // equals
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} // ExecutionInstanceKey
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}
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