software.amazon.jdbc.wrapper

Class PreparedStatementRecorder

java.lang.Object

software.amazon.jdbc.wrapper.PreparedStatementRecorder

All Implemented Interfaces:

java.lang.reflect.InvocationHandler

public class PreparedStatementRecorder
extends java.lang.Object
implements java.lang.reflect.InvocationHandler

Records the parameter and configuration setters applied to a PreparedStatement (or CallableStatement) so they can be replayed onto a freshly-prepared statement when a read/write splitting plugin rebinds the statement to a different connection for query-level load balancing.

The recorder is installed as a Proxy between the wrapper and the real driver statement, so every setter call is captured without modifying the wrapper's ~45 setter methods. Recording is only installed when rebinding is enabled (see ConnectionWrapper), so it adds no overhead to the default configuration.

A statement becomes non-rebindable if a one-shot argument (an InputStream or Reader) is bound (it cannot be replayed), or once a batch is started (a pending batch must not be rerouted).

Method Summary

Modifier and Type	Method and Description
@Nullable java.lang.Object	invoke(java.lang.Object proxy, java.lang.reflect.Method method, java.lang.Object[] args)

Methods inherited from class java.lang.Object

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

Method Detail

invoke

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

Specified by:

invoke in interface java.lang.reflect.InvocationHandler

Throws:

java.lang.Throwable