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java.lang.Objectorg.apache.ojb.broker.core.proxy.AbstractIndirectionHandler
public abstract class AbstractIndirectionHandler
Abstract implementation for the indirection handler used by ojb's proxies.
Constructor Summary | |
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AbstractIndirectionHandler(PBKey brokerKey,
Identity id)
Creates a new indirection handler for the indicated object. |
Method Summary | |
---|---|
void |
addListener(MaterializationListener listener)
Adds a materialization listener. |
boolean |
alreadyMaterialized()
Determines whether the real subject already has been materialized. |
PBKey |
getBrokerKey()
Returns the key of the persistence broker used by this indirection handler. |
Identity |
getIdentity()
Returns the identity of the subject. |
java.lang.Object |
getRealSubject()
Returns the proxies real subject. |
java.lang.Object |
invoke(java.lang.Object proxy,
java.lang.reflect.Method method,
java.lang.Object[] args)
[Copied from InvocationHandler ]:Processes a method invocation on a proxy instance and returns the result. |
void |
removeListener(MaterializationListener listener)
Removes a materialization listener. |
void |
setRealSubject(java.lang.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. |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public AbstractIndirectionHandler(PBKey brokerKey, Identity id)
brokerKey
- The key of the persistence brokerid
- The identity of the subjectMethod Detail |
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public Identity getIdentity()
getIdentity
in interface IndirectionHandler
public PBKey getBrokerKey()
getBrokerKey
in interface IndirectionHandler
public void addListener(MaterializationListener listener)
addListener
in interface IndirectionHandler
listener
- The listener to addpublic void removeListener(MaterializationListener listener)
removeListener
in interface IndirectionHandler
listener
- The listener to removepublic java.lang.Object invoke(java.lang.Object proxy, java.lang.reflect.Method method, java.lang.Object[] args)
InvocationHandler
]:
invoke
in interface IndirectionHandler
proxy
- The proxy instance that the method was invoked onmethod
- The Method
instance corresponding to the
interface method invoked on the proxy instance. The declaring
class of the Method
object will be the
interface that the method was declared in, which may be a
superinterface of the proxy interface that the proxy class
inherits the method through.args
- An array of objects containing the values of the arguments
passed in the method invocation on the proxy instance, or
null
if interface method takes no arguments.
Arguments of primitive types are wrapped in instances of the
appropriate primitive wrapper class, such as
java.lang.Integer
or
java.lang.Boolean
.
null
and the interface method's return type is primitive, then a
NullPointerException
will be thrown by the method
invocation on the proxy instance. If the value returned by this
method is otherwise not compatible with the interface method's
declared return type as described above, a
ClassCastException
will be thrown by the method
invocation on the proxy instance.
PersistenceBrokerException
- The exception to throw from the method invocation on the
proxy instance. The exception's type must be assignable
either to any of the exception types declared in the
throws
clause of the interface method or to
the unchecked exception types
java.lang.RuntimeException
or
java.lang.Error
. If a checked exception is
thrown by this method that is not assignable to any of the
exception types declared in the throws
clause
of the interface method, then an
UndeclaredThrowableException
containing the exception that was thrown by this method will
be thrown by the method invocation on the proxy instance.UndeclaredThrowableException
public java.lang.Object getRealSubject() throws PersistenceBrokerException
getRealSubject
in interface IndirectionHandler
PersistenceBrokerException
public void setRealSubject(java.lang.Object object)
setRealSubject
in interface IndirectionHandler
public boolean alreadyMaterialized()
alreadyMaterialized
in interface IndirectionHandler
true
if the real subject has already been loaded
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