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Java Source Code / Java Documentation » Database ORM » db ojb » org.apache.ojb.broker.core.proxy   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.apache.ojb.broker.core.proxy.AbstractIndirectionHandler All known Subclasses:   org.apache.ojb.broker.core.proxy.IndirectionHandlerCGLIBImpl,  org.apache.ojb.broker.core.proxy.IndirectionHandlerJDKImpl, AbstractIndirectionHandler abstract public class AbstractIndirectionHandler implements IndirectionHandler(Code) Abstract implementation for the indirection handler used by ojb's proxies. version:    $Id$ Inner Class :final static class TemporaryBrokerWrapper Field Summary final static  long serialVersionUID      Constructor Summary public   AbstractIndirectionHandler(PBKey brokerKey, Identity id)      Creates a new indirection handler for the indicated object. Method Summary public synchronized  void addListener(MaterializationListener listener)      Adds a materialization listener. protected  void afterMaterialization()      Calls afterMaterialization on all registered listeners in the reverse order of registration. public  boolean alreadyMaterialized()      Determines whether the real subject already has been materialized. protected  void beforeMaterialization()      Calls beforeMaterialization on all registered listeners in the reverse order of registration. protected  TemporaryBrokerWrapper getBroker()      Gets the persistence broker used by this indirection handler. public  PBKey getBrokerKey()      Returns the key of the persistence broker used by this indirection handler. public  Identity getIdentity()      Returns the identity of the subject. public  Object getRealSubject()      Returns the proxies real subject. public  Object invoke(Object proxy, Method method, Object[] args)      [Copied from java.lang.reflect.InvocationHandler ]: Processes a method invocation on a proxy instance and returns the result. This method will be invoked on an invocation handler when a method is invoked on a proxy instance that it is associated with. Parameters:   proxy - The proxy instance that the method was invoked on Parameters:   method - The Method instance corresponding to theinterface method invoked on the proxy instance. protected synchronized  Object materializeSubject()      Retrieves the real subject from the underlying RDBMS. public synchronized  void removeListener(MaterializationListener listener)      Removes a materialization listener. protected  void setBrokerKey(PBKey brokerKey)      Sets the key of the persistence broker used by this indirection handler. protected  void setIdentity(Identity identity)      Sets the identity of the subject of this indirection handler. public  void setRealSubject(Object object)      [olegnitz] This looks stupid, but is really necessary for OTM: the materialization listener replaces the real subject by its clone to ensure transaction isolation. Field Detail serialVersionUID final static long serialVersionUID(Code) Constructor Detail AbstractIndirectionHandler public AbstractIndirectionHandler(PBKey brokerKey, Identity id)(Code) Creates a new indirection handler for the indicated object. Parameters:   brokerKey - The key of the persistence broker Parameters:   id - The identity of the subject Method Detail addListener public synchronized void addListener(MaterializationListener listener)(Code) Adds a materialization listener. Parameters:   listener - The listener to add afterMaterialization protected void afterMaterialization()(Code) Calls afterMaterialization on all registered listeners in the reverse order of registration. alreadyMaterialized public boolean alreadyMaterialized()(Code) Determines whether the real subject already has been materialized. true if the real subject has already been loaded beforeMaterialization protected void beforeMaterialization()(Code) Calls beforeMaterialization on all registered listeners in the reverse order of registration. getBroker protected TemporaryBrokerWrapper getBroker() throws PBFactoryException(Code) Gets the persistence broker used by this indirection handler. If no PBKey is available a runtime exception will be thrown. a PersistenceBroker getBrokerKey public PBKey getBrokerKey()(Code) Returns the key of the persistence broker used by this indirection handler. The broker key getIdentity public Identity getIdentity()(Code) Returns the identity of the subject. The identity getRealSubject public Object getRealSubject() throws PersistenceBrokerException(Code) Returns the proxies real subject. The subject will be materialized if necessary. The subject invoke public Object invoke(Object proxy, Method method, Object[] args)(Code) [Copied from java.lang.reflect.InvocationHandler ]: Processes a method invocation on a proxy instance and returns the result. This method will be invoked on an invocation handler when a method is invoked on a proxy instance that it is associated with. Parameters:   proxy - The proxy instance that the method was invoked on Parameters:   method - The Method instance corresponding to theinterface method invoked on the proxy instance. The declaringclass of the Method object will be theinterface that the method was declared in, which may be asuperinterface of the proxy interface that the proxy classinherits the method through. Parameters:   args - An array of objects containing the values of the argumentspassed in the method invocation on the proxy instance, ornull if interface method takes no arguments.Arguments of primitive types are wrapped in instances of theappropriate primitive wrapper class, such asjava.lang.Integer orjava.lang.Boolean. The value to return from the method invocation on the proxyinstance. If the declared return type of the interface method isa primitive type, then the value returned by this method must bean instance of the corresponding primitive wrapper class;otherwise, it must be a type assignable to the declared returntype. If the value returned by this method is nulland the interface method's return type is primitive, then aNullPointerException will be thrown by the methodinvocation on the proxy instance. If the value returned by thismethod is otherwise not compatible with the interface method'sdeclared return type as described above, aClassCastException will be thrown by the methodinvocation on the proxy instance. throws:   PersistenceBrokerException - The exception to throw from the method invocation on theproxy instance. The exception's type must be assignableeither to any of the exception types declared in thethrows clause of the interface method or tothe unchecked exception typesjava.lang.RuntimeException orjava.lang.Error. If a checked exception isthrown by this method that is not assignable to any of theexception types declared in the throws clauseof the interface method, then anjava.lang.reflect.UndeclaredThrowableExceptioncontaining the exception that was thrown by this method willbe thrown by the method invocation on the proxy instance. See Also:   java.lang.reflect.UndeclaredThrowableException materializeSubject protected synchronized Object materializeSubject() throws PersistenceBrokerException(Code) Retrieves the real subject from the underlying RDBMS. Override this method if the object is to be materialized in a specific way. The real subject of the proxy removeListener public synchronized void removeListener(MaterializationListener listener)(Code) Removes a materialization listener. Parameters:   listener - The listener to remove setBrokerKey protected void setBrokerKey(PBKey brokerKey)(Code) Sets the key of the persistence broker used by this indirection handler. Parameters:   brokerKey - The broker key setIdentity protected void setIdentity(Identity identity)(Code) Sets the identity of the subject of this indirection handler. Parameters:   identity - setRealSubject public void setRealSubject(Object object)(Code) [olegnitz] This looks stupid, but is really necessary for OTM: the materialization listener replaces the real subject by its clone to ensure transaction isolation. Is there a better way to do this? Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)