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Revised PersistenceExceptionTranslationInterceptor to lazily retrieve PersistenceExceptionTranslator beans on demand

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Issue: SPR-10894
This commit is contained in:
Juergen Hoeller
2013-09-04 18:33:25 +02:00
parent baa698eddf
commit df18e9173d
2 changed files with 73 additions and 59 deletions
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68
spring-tx/src/main/java/org/springframework/dao/support/PersistenceExceptionTranslationInterceptor.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.
@@ -47,10 +47,12 @@ import org.springframework.util.ReflectionUtils;
public class PersistenceExceptionTranslationInterceptor
implements MethodInterceptor, BeanFactoryAware, InitializingBean {
private PersistenceExceptionTranslator persistenceExceptionTranslator;
private volatile PersistenceExceptionTranslator persistenceExceptionTranslator;
private boolean alwaysTranslate = false;
private ListableBeanFactory beanFactory;
/**
* Create a new PersistenceExceptionTranslationInterceptor.
@@ -63,10 +65,11 @@ public class PersistenceExceptionTranslationInterceptor
/**
* Create a new PersistenceExceptionTranslationInterceptor
* for the given PersistenceExceptionTranslator.
* @param persistenceExceptionTranslator the PersistenceExceptionTranslator to use
* @param pet the PersistenceExceptionTranslator to use
*/
public PersistenceExceptionTranslationInterceptor(PersistenceExceptionTranslator persistenceExceptionTranslator) {
setPersistenceExceptionTranslator(persistenceExceptionTranslator);
public PersistenceExceptionTranslationInterceptor(PersistenceExceptionTranslator pet) {
Assert.notNull(pet, "PersistenceExceptionTranslator must not be null");
this.persistenceExceptionTranslator = pet;
}
/**
@@ -76,7 +79,8 @@ public class PersistenceExceptionTranslationInterceptor
* PersistenceExceptionTranslators from
*/
public PersistenceExceptionTranslationInterceptor(ListableBeanFactory beanFactory) {
this.persistenceExceptionTranslator = detectPersistenceExceptionTranslators(beanFactory);
Assert.notNull(beanFactory, "ListableBeanFactory must not be null");
this.beanFactory = beanFactory;
}
@@ -87,7 +91,6 @@ public class PersistenceExceptionTranslationInterceptor
* @see #detectPersistenceExceptionTranslators
*/
public void setPersistenceExceptionTranslator(PersistenceExceptionTranslator pet) {
Assert.notNull(pet, "PersistenceExceptionTranslator must not be null");
this.persistenceExceptionTranslator = pet;
}
@@ -115,43 +118,18 @@ public class PersistenceExceptionTranslationInterceptor
throw new IllegalArgumentException(
"Cannot use PersistenceExceptionTranslator autodetection without ListableBeanFactory");
}
this.persistenceExceptionTranslator =
detectPersistenceExceptionTranslators((ListableBeanFactory) beanFactory);
this.beanFactory = (ListableBeanFactory) beanFactory;
}
}
@Override
public void afterPropertiesSet() {
if (this.persistenceExceptionTranslator == null) {
if (this.persistenceExceptionTranslator == null && this.beanFactory == null) {
throw new IllegalArgumentException("Property 'persistenceExceptionTranslator' is required");
}
}
/**
* Detect all PersistenceExceptionTranslators in the given BeanFactory.
* @param beanFactory the ListableBeanFactory to obtaining all
* PersistenceExceptionTranslators from
* @return a chained PersistenceExceptionTranslator, combining all
* PersistenceExceptionTranslators found in the factory
* @see ChainedPersistenceExceptionTranslator
*/
protected PersistenceExceptionTranslator detectPersistenceExceptionTranslators(ListableBeanFactory beanFactory) {
// Find all translators, being careful not to activate FactoryBeans.
Map<String, PersistenceExceptionTranslator> pets = BeanFactoryUtils.beansOfTypeIncludingAncestors(
beanFactory, PersistenceExceptionTranslator.class, false, false);
if (pets.isEmpty()) {
throw new IllegalStateException(
"No persistence exception translators found in bean factory. Cannot perform exception translation.");
}
ChainedPersistenceExceptionTranslator cpet = new ChainedPersistenceExceptionTranslator();
for (PersistenceExceptionTranslator pet : pets.values()) {
cpet.addDelegate(pet);
}
return cpet;
}
@Override
public Object invoke(MethodInvocation mi) throws Throwable {
try {
@@ -163,9 +141,31 @@ public class PersistenceExceptionTranslationInterceptor
throw ex;
}
else {
if (this.persistenceExceptionTranslator == null) {
this.persistenceExceptionTranslator = detectPersistenceExceptionTranslators(this.beanFactory);
}
throw DataAccessUtils.translateIfNecessary(ex, this.persistenceExceptionTranslator);
}
}
}
/**
* Detect all PersistenceExceptionTranslators in the given BeanFactory.
* @param beanFactory the ListableBeanFactory to obtaining all
* PersistenceExceptionTranslators from
* @return a chained PersistenceExceptionTranslator, combining all
* PersistenceExceptionTranslators found in the factory
* @see ChainedPersistenceExceptionTranslator
*/
protected PersistenceExceptionTranslator detectPersistenceExceptionTranslators(ListableBeanFactory beanFactory) {
// Find all translators, being careful not to activate FactoryBeans.
Map<String, PersistenceExceptionTranslator> pets = BeanFactoryUtils.beansOfTypeIncludingAncestors(
beanFactory, PersistenceExceptionTranslator.class, false, false);
ChainedPersistenceExceptionTranslator cpet = new ChainedPersistenceExceptionTranslator();
for (PersistenceExceptionTranslator pet : pets.values()) {
cpet.addDelegate(pet);
}
return cpet;
}
}