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SimpleTraceInterceptor (Spring Framework API 2.1) - Spring Framework 2.1.0 API 文档英文版

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org.springframework.aop.interceptor
Class SimpleTraceInterceptor

java.lang.Object
  org.springframework.aop.interceptor.AbstractTraceInterceptor
      org.springframework.aop.interceptor.SimpleTraceInterceptor

All Implemented Interfaces:

Serializable, Advice, Interceptor, MethodInterceptor

Direct Known Subclasses:

DebugInterceptor

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public class SimpleTraceInterceptor
extends AbstractTraceInterceptor

Simple AOP Alliance MethodInterceptor that can be introduced in a chain to display verbose trace information about intercepted method invocations, with method entry and method exit info.

Consider using CustomizableTraceInterceptor for more advanced needs. Note that CustomizableTraceInterceptor requires JDK 1.4 or later.

Since:

1.2

Author:

Dmitriy Kopylenko, Juergen Hoeller

See Also:

CustomizableTraceInterceptor, Serialized Form

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Field Summary

 

Fields inherited from class org.springframework.aop.interceptor.AbstractTraceInterceptor
defaultLogger

 

Constructor Summary
SimpleTraceInterceptor()           Create a new SimpleTraceInterceptor with a static logger.
SimpleTraceInterceptor(boolean useDynamicLogger)           Create a new SimpleTraceInterceptor with dynamic or static logger, according to the given flag.

 

Method Summary
protected  String	getInvocationDescription(MethodInvocation invocation)           Return a description for the given method invocation.
protected  Object	invokeUnderTrace(MethodInvocation invocation, Log logger)           Subclasses must override this method to perform any tracing around the supplied MethodInvocation.

 

Methods inherited from class org.springframework.aop.interceptor.AbstractTraceInterceptor
getLoggerForInvocation, invoke, isInterceptorEnabled, isLogEnabled, setHideProxyClassNames, setLoggerName, setUseDynamicLogger

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Constructor Detail

SimpleTraceInterceptor

public SimpleTraceInterceptor()

Create a new SimpleTraceInterceptor with a static logger.

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SimpleTraceInterceptor

public SimpleTraceInterceptor(boolean useDynamicLogger)

Create a new SimpleTraceInterceptor with dynamic or static logger, according to the given flag.

Parameters:

useDynamicLogger - whether to use a dynamic logger or a static logger

See Also:

AbstractTraceInterceptor.setUseDynamicLogger(boolean)

Method Detail

invokeUnderTrace

protected Object invokeUnderTrace(MethodInvocation invocation,
                                  Log logger)
                           throws Throwable

Description copied from class: AbstractTraceInterceptor

Subclasses must override this method to perform any tracing around the supplied MethodInvocation. Subclasses are responsible for ensuring that the MethodInvocation actually executes by calling MethodInvocation.proceed().

By default, the passed-in Log instance will have log level "trace" enabled. Subclasses do not have to check for this again, unless they overwrite the isInterceptorEnabled method to modify the default behavior.

Specified by:

invokeUnderTrace in class AbstractTraceInterceptor

logger - the Log to write trace messages to

Returns:

the result of the call to MethodInvocation.proceed()

Throws:

Throwable - if the call to MethodInvocation.proceed() encountered any errors

See Also:

AbstractTraceInterceptor.isInterceptorEnabled(org.aopalliance.intercept.MethodInvocation, org.apache.commons.logging.Log), AbstractTraceInterceptor.isLogEnabled(org.apache.commons.logging.Log)

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getInvocationDescription

protected String getInvocationDescription(MethodInvocation invocation)

Return a description for the given method invocation.

Parameters:

invocation - the invocation to describe

Returns:

the description

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