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DynamicProxy MBean result aggregation handler interface. Implementation of this interface can be specified in MBeanDescriptor's MBean xml tag's attribute called "aggregationHandlerClass."
example MBeanDescriptor header & initial MBean tag:
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE MBean SYSTEM "MbeanDescriptor.dtd"> < MBean type="SampleStateMBean" collaboratorClass="com.ibm.ws390.scaffold.SampleStateMBeanProxy" aggregationHandlerClass="com.ibm.ws390.scaffold.SampleStateAggregationHandler" eventHandlerClass="com.ibm.ws390.scaffold.SampleStateEventHandler" invocationHandlerClass="com.ibm.ws390.scaffold.SampleStateInvocationHandler" stateObjectClass="com.ibm.ws390.scaffold.SampleState" version="5.0" platform="dynamicproxy" description="Sample state MBean."> : :
This interface defines the method that must be implemented by MBean provider who wants to handle result aggregation in dynamicproxy enabled MBean for WebSphere for z/OS for all MBean methods that uses "multicall" or "spray" proxyInvokeType and returns a return value. Implementation of this interface should be able to first determine exactly which method this aggregation is to be processed for and then properly aggregate all servant MBeans' results that are passed in and compile up a single result to be returned.
Method Summary | |
java.lang.Object |
aggregateResults(java.lang.String methodName,
java.lang.Object[] params,
java.lang.String[] signatures,
java.lang.Object[] servantMBeanResults,
StateObject stateObject)
Return an aggregated result from a multicall Mbean operation which compiles through all servant MBeans' results and returns a respective single return value for an invoked method. |
Method Detail |
public java.lang.Object aggregateResults(java.lang.String methodName, java.lang.Object[] params, java.lang.String[] signatures, java.lang.Object[] servantMBeanResults, StateObject stateObject)
methodName
- MBean method nameparams
- MBean method parameterssignatures
- MBean method signaturesservantMBeanResults
- Result of each servant MBean instances
invoked by the dynamicproxy multicast
invocation.
Note: this value can be "null" OR can be
an array of "null"s in case return value
of the method is "void." Implementation
of this method MUST handle this case to
avoid a NullPointerException
.stateObject
- MBean provider provided StateObject
used by
dynamicproxy MBean in CR to manage its state. Note: this object
MAY BE null if "stateObjectClass" was not specified OR internal
error occurred during initialization of this dynamicproxy MBean.
Implmentation MUST properly handle "null" input.
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