com.goldencode.p2j.persist

Class RecordBuffer.ArgumentBuffer

java.lang.Object

com.goldencode.p2j.persist.RecordBuffer.ArgumentBuffer

All Implemented Interfaces:

java.lang.reflect.InvocationHandler

Enclosing class:

RecordBuffer

private static class RecordBuffer.ArgumentBuffer
extends java.lang.Object
implements java.lang.reflect.InvocationHandler

Used as a handler for buffers which are referenced through a buffer parameter. This should handle specific DMO alias operations, while any other method should be delegated to the back of the proxy - the buffer. The motivation behind this is related to the fact that buffer parameters should have the same backing buffer, but still differ through their DMO alias and name. This hander will manage both Buffer proxies and RecordBuffer proxies.

Field Summary

Fields

Modifier and Type	Field and Description
private RecordBuffer	boundBuffer The bound buffer of the buffer instance.
private RecordBuffer	boundProxy The proxy for the bound buffer.
private BufferImpl	buffer The backing buffer of this proxy, which should handle the majority of the methods
private java.lang.String	bufferName The buffer name which should be adopted by the buffer
private RecordBuffer	defBuffer The definition buffer of the buffer instance.
private RecordBuffer	defProxy The proxy for the definition buffer
private java.lang.String	dmoAlias The DMO alias which should be adopted by the backing record buffer

Constructor Summary

Constructors

Constructor and Description
ArgumentBuffer(BufferImpl buffer, java.lang.String dmoAlias, java.lang.String bufferName) The basic initializing constructor.

Method Summary

Modifier and Type	Method and Description
private RecordBuffer	createProxy() Delivers a new proxy backed by this handler.
java.lang.Object	invoke(java.lang.Object proxy, java.lang.reflect.Method method, java.lang.Object[] args) Proxy handler which should let the methods to the buffer, beside the ones which imply the DMO alias or buffer name, which will be handled here.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

buffer

private BufferImpl buffer

The backing buffer of this proxy, which should handle the majority of the methods

defBuffer

private RecordBuffer defBuffer

The definition buffer of the buffer instance.

boundBuffer

private RecordBuffer boundBuffer

The bound buffer of the buffer instance. Can be the same as defBuffer.

defProxy

private RecordBuffer defProxy

The proxy for the definition buffer

boundProxy

private RecordBuffer boundProxy

The proxy for the bound buffer. It is the same as defProxy, if the definition buffer is the same as the bound buffer.

dmoAlias

private java.lang.String dmoAlias

The DMO alias which should be adopted by the backing record buffer

bufferName

private java.lang.String bufferName

The buffer name which should be adopted by the buffer

Constructor Detail

ArgumentBuffer

ArgumentBuffer(BufferImpl buffer,
               java.lang.String dmoAlias,
               java.lang.String bufferName)

The basic initializing constructor.

Parameters:

buffer - The buffer which is going to handle most of the methods

dmoAlias - The DMO alias which should be adopted by the RecordBuffer

bufferName - The name which should be adopted by the BufferImpl

Method Detail

createProxy

private RecordBuffer createProxy()

Delivers a new proxy backed by this handler. The instance created is made with the implicit constructor, so invoking methods on this instance without an invocation handler in between, can trigger inconsistent data or exceptions.

Returns:

A proxy for the specified buffer.

invoke

public java.lang.Object invoke(java.lang.Object proxy,
                               java.lang.reflect.Method method,
                               java.lang.Object[] args)
                        throws java.lang.Throwable

Proxy handler which should let the methods to the buffer, beside the ones which imply the DMO alias or buffer name, which will be handled here.

Specified by:

invoke in interface java.lang.reflect.InvocationHandler

Throws:

java.lang.Throwable