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@Transactional in AspectJ mode works with CallbackPreferringPlatformTransactionManager (WebSphere) as well

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Effectively, AbstractTransactionAspect got refactored into around advice, reusing former TransactionInterceptor code which now lives in slightly generalized form in TransactionAspectSupport, and using a workaround for rethrowing checked exceptions.

Issue: SPR-9268
This commit is contained in:
Juergen Hoeller
2013-02-10 18:06:50 +01:00
parent 01c44c8bf6
commit 1af28efe39
5 changed files with 282 additions and 215 deletions
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176
spring-tx/src/main/java/org/springframework/transaction/interceptor/TransactionAspectSupport.java
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@@ -16,12 +16,8 @@
package org.springframework.transaction.interceptor;
import java.lang.reflect.Method;
import java.util.Properties;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.BeanFactoryAware;
import org.springframework.beans.factory.InitializingBean;
@@ -31,8 +27,13 @@ import org.springframework.transaction.NoTransactionException;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.TransactionSystemException;
import org.springframework.transaction.support.CallbackPreferringPlatformTransactionManager;
import org.springframework.transaction.support.TransactionCallback;
import org.springframework.util.StringUtils;
import java.lang.reflect.Method;
import java.util.Properties;
/**
* Base class for transactional aspects, such as the {@link TransactionInterceptor}
* or an AspectJ aspect.
@@ -231,6 +232,90 @@ public abstract class TransactionAspectSupport implements BeanFactoryAware, Init
}
/**
* General delegate for around-advice-based subclasses, delegating to several other template
* methods on this class. Able to handle {@link CallbackPreferringPlatformTransactionManager}
* as well as regular {@link PlatformTransactionManager} implementations.
* @param method the Method being invoked
* @param targetClass the target class that we're invoking the method on
* @param invocation the callback to use for proceeding with the target invocation
* @return the return value of the method, if any
* @throws Throwable propagated from the target invocation
*/
protected Object invokeWithinTransaction(Method method, Class targetClass, final InvocationCallback invocation)
throws Throwable {
// If the transaction attribute is null, the method is non-transactional.
final TransactionAttribute txAttr = getTransactionAttributeSource().getTransactionAttribute(method, targetClass);
final PlatformTransactionManager tm = determineTransactionManager(txAttr);
final String joinpointIdentification = methodIdentification(method, targetClass);
if (txAttr == null || !(tm instanceof CallbackPreferringPlatformTransactionManager)) {
// Standard transaction demarcation with getTransaction and commit/rollback calls.
TransactionInfo txInfo = createTransactionIfNecessary(tm, txAttr, joinpointIdentification);
Object retVal = null;
try {
// This is an around advice: Invoke the next interceptor in the chain.
// This will normally result in a target object being invoked.
retVal = invocation.proceedWithInvocation();
}
catch (Throwable ex) {
// target invocation exception
completeTransactionAfterThrowing(txInfo, ex);
throw ex;
}
finally {
cleanupTransactionInfo(txInfo);
}
commitTransactionAfterReturning(txInfo);
return retVal;
}
else {
// It's a CallbackPreferringPlatformTransactionManager: pass a TransactionCallback in.
try {
Object result = ((CallbackPreferringPlatformTransactionManager) tm).execute(txAttr,
new TransactionCallback<Object>() {
public Object doInTransaction(TransactionStatus status) {
TransactionInfo txInfo = prepareTransactionInfo(tm, txAttr, joinpointIdentification, status);
try {
return invocation.proceedWithInvocation();
}
catch (Throwable ex) {
if (txAttr.rollbackOn(ex)) {
// A RuntimeException: will lead to a rollback.
if (ex instanceof RuntimeException) {
throw (RuntimeException) ex;
}
else {
throw new ThrowableHolderException(ex);
}
}
else {
// A normal return value: will lead to a commit.
return new ThrowableHolder(ex);
}
}
finally {
cleanupTransactionInfo(txInfo);
}
}
});
// Check result: It might indicate a Throwable to rethrow.
if (result instanceof ThrowableHolder) {
throw ((ThrowableHolder) result).getThrowable();
}
else {
return result;
}
}
catch (ThrowableHolderException ex) {
throw ex.getCause();
}
}
}
/**
* Determine the specific transaction manager to use for the given transaction.
*/
@@ -250,23 +335,6 @@ public abstract class TransactionAspectSupport implements BeanFactoryAware, Init
}
}
/**
* Create a transaction if necessary, based on the given method and class.
* <p>Performs a default TransactionAttribute lookup for the given method.
* @param method the method about to execute
* @param targetClass the class that the method is being invoked on
* @return a TransactionInfo object, whether or not a transaction was created.
* The {@code hasTransaction()} method on TransactionInfo can be used to
* tell if there was a transaction created.
* @see #getTransactionAttributeSource()
*/
protected TransactionInfo createTransactionIfNecessary(Method method, Class targetClass) {
// If the transaction attribute is null, the method is non-transactional.
TransactionAttribute txAttr = getTransactionAttributeSource().getTransactionAttribute(method, targetClass);
PlatformTransactionManager tm = determineTransactionManager(txAttr);
return createTransactionIfNecessary(tm, txAttr, methodIdentification(method, targetClass));
}
/**
* Convenience method to return a String representation of this Method
* for use in logging. Can be overridden in subclasses to provide a
@@ -297,6 +365,26 @@ public abstract class TransactionAspectSupport implements BeanFactoryAware, Init
return null;
}
/**
* Create a transaction if necessary, based on the given method and class.
* <p>Performs a default TransactionAttribute lookup for the given method.
* @param method the method about to execute
* @param targetClass the class that the method is being invoked on
* @return a TransactionInfo object, whether or not a transaction was created.
* The {@code hasTransaction()} method on TransactionInfo can be used to
* tell if there was a transaction created.
* @see #getTransactionAttributeSource()
* @deprecated in favor of
* {@link #createTransactionIfNecessary(PlatformTransactionManager, TransactionAttribute, String)}
*/
@Deprecated
protected TransactionInfo createTransactionIfNecessary(Method method, Class targetClass) {
// If the transaction attribute is null, the method is non-transactional.
TransactionAttribute txAttr = getTransactionAttributeSource().getTransactionAttribute(method, targetClass);
PlatformTransactionManager tm = determineTransactionManager(txAttr);
return createTransactionIfNecessary(tm, txAttr, methodIdentification(method, targetClass));
}
/**
* Create a transaction if necessary based on the given TransactionAttribute.
* <p>Allows callers to perform custom TransactionAttribute lookups through
@@ -527,4 +615,50 @@ public abstract class TransactionAspectSupport implements BeanFactoryAware, Init
}
}
/**
* Simple callback interface for proceeding with the target invocation.
* Concrete interceptors/aspects adapt this to their invocation mechanism.
*/
protected interface InvocationCallback {
Object proceedWithInvocation() throws Throwable;
}
/**
* Internal holder class for a Throwable, used as a return value
* from a TransactionCallback (to be subsequently unwrapped again).
*/
private static class ThrowableHolder {
private final Throwable throwable;
public ThrowableHolder(Throwable throwable) {
this.throwable = throwable;
}
public final Throwable getThrowable() {
return this.throwable;
}
}
/**
* Internal holder class for a Throwable, used as a RuntimeException to be
* thrown from a TransactionCallback (and subsequently unwrapped again).
*/
@SuppressWarnings("serial")
private static class ThrowableHolderException extends RuntimeException {
public ThrowableHolderException(Throwable throwable) {
super(throwable);
}
@Override
public String toString() {
return getCause().toString();
}
}
}

129
spring-tx/src/main/java/org/springframework/transaction/interceptor/TransactionInterceptor.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2002-2012 the original author or authors.
* Copyright 2002-2013 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -16,22 +16,18 @@
package org.springframework.transaction.interceptor;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.springframework.aop.support.AopUtils;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.transaction.PlatformTransactionManager;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.Properties;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.springframework.aop.support.AopUtils;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.support.CallbackPreferringPlatformTransactionManager;
import org.springframework.transaction.support.TransactionCallback;
/**
* AOP Alliance MethodInterceptor for declarative transaction
* management using the common Spring transaction infrastructure
@@ -40,7 +36,7 @@ import org.springframework.transaction.support.TransactionCallback;
* <p>Derives from the {@link TransactionAspectSupport} class which
* contains the integration with Spring's underlying transaction API.
* TransactionInterceptor simply calls the relevant superclass methods
* such as {@link #createTransactionIfNecessary} in the correct order.
* such as {@link #invokeWithinTransaction} in the correct order.
*
* <p>TransactionInterceptors are thread-safe.
*
@@ -94,76 +90,12 @@ public class TransactionInterceptor extends TransactionAspectSupport implements
// as well as the method, which may be from an interface.
Class<?> targetClass = (invocation.getThis() != null ? AopUtils.getTargetClass(invocation.getThis()) : null);
// If the transaction attribute is null, the method is non-transactional.
final TransactionAttribute txAttr =
getTransactionAttributeSource().getTransactionAttribute(invocation.getMethod(), targetClass);
final PlatformTransactionManager tm = determineTransactionManager(txAttr);
final String joinpointIdentification = methodIdentification(invocation.getMethod(), targetClass);
if (txAttr == null || !(tm instanceof CallbackPreferringPlatformTransactionManager)) {
// Standard transaction demarcation with getTransaction and commit/rollback calls.
TransactionInfo txInfo = createTransactionIfNecessary(tm, txAttr, joinpointIdentification);
Object retVal = null;
try {
// This is an around advice: Invoke the next interceptor in the chain.
// This will normally result in a target object being invoked.
retVal = invocation.proceed();
// Adapt to TransactionAspectSupport's invokeWithinTransaction...
return invokeWithinTransaction(invocation.getMethod(), targetClass, new InvocationCallback() {
public Object proceedWithInvocation() throws Throwable {
return invocation.proceed();
}
catch (Throwable ex) {
// target invocation exception
completeTransactionAfterThrowing(txInfo, ex);
throw ex;
}
finally {
cleanupTransactionInfo(txInfo);
}
commitTransactionAfterReturning(txInfo);
return retVal;
}
else {
// It's a CallbackPreferringPlatformTransactionManager: pass a TransactionCallback in.
try {
Object result = ((CallbackPreferringPlatformTransactionManager) tm).execute(txAttr,
new TransactionCallback<Object>() {
public Object doInTransaction(TransactionStatus status) {
TransactionInfo txInfo = prepareTransactionInfo(tm, txAttr, joinpointIdentification, status);
try {
return invocation.proceed();
}
catch (Throwable ex) {
if (txAttr.rollbackOn(ex)) {
// A RuntimeException: will lead to a rollback.
if (ex instanceof RuntimeException) {
throw (RuntimeException) ex;
}
else {
throw new ThrowableHolderException(ex);
}
}
else {
// A normal return value: will lead to a commit.
return new ThrowableHolder(ex);
}
}
finally {
cleanupTransactionInfo(txInfo);
}
}
});
// Check result: It might indicate a Throwable to rethrow.
if (result instanceof ThrowableHolder) {
throw ((ThrowableHolder) result).getThrowable();
}
else {
return result;
}
}
catch (ThrowableHolderException ex) {
throw ex.getCause();
}
}
});
}
@@ -195,39 +127,4 @@ public class TransactionInterceptor extends TransactionAspectSupport implements
setBeanFactory((BeanFactory) ois.readObject());
}
/**
* Internal holder class for a Throwable, used as a return value
* from a TransactionCallback (to be subsequently unwrapped again).
*/
private static class ThrowableHolder {
private final Throwable throwable;
public ThrowableHolder(Throwable throwable) {
this.throwable = throwable;
}
public final Throwable getThrowable() {
return this.throwable;
}
}
/**
* Internal holder class for a Throwable, used as a RuntimeException to be
* thrown from a TransactionCallback (and subsequently unwrapped again).
*/
private static class ThrowableHolderException extends RuntimeException {
public ThrowableHolderException(Throwable throwable) {
super(throwable);
}
@Override
public String toString() {
return getCause().toString();
}
}
}