Class AbstractFallbackTransactionAttributeSource

All Implemented Interfaces:
Aware, EmbeddedValueResolverAware, TransactionAttributeSource
Direct Known Subclasses:

public abstract class AbstractFallbackTransactionAttributeSource extends Object implements TransactionAttributeSource, EmbeddedValueResolverAware
Abstract implementation of TransactionAttributeSource that caches attributes for methods and implements a fallback policy: 1. specific target method; 2. target class; 3. declaring method; 4. declaring class/interface.

Defaults to using the target class's transaction attribute if none is associated with the target method. Any transaction attribute associated with the target method completely overrides a class transaction attribute. If none found on the target class, the interface that the invoked method has been called through (in case of a JDK proxy) will be checked.

This implementation caches attributes by method after they are first used. If it is ever desirable to allow dynamic changing of transaction attributes (which is very unlikely), caching could be made configurable. Caching is desirable because of the cost of evaluating rollback rules.

Rod Johnson, Juergen Hoeller
  • Field Details

    • logger

      protected final Log logger
      Logger available to subclasses.

      As this base class is not marked Serializable, the logger will be recreated after serialization - provided that the concrete subclass is Serializable.

  • Constructor Details

    • AbstractFallbackTransactionAttributeSource

      public AbstractFallbackTransactionAttributeSource()
  • Method Details

    • setEmbeddedValueResolver

      public void setEmbeddedValueResolver(StringValueResolver resolver)
      Description copied from interface: EmbeddedValueResolverAware
      Set the StringValueResolver to use for resolving embedded definition values.
      Specified by:
      setEmbeddedValueResolver in interface EmbeddedValueResolverAware
    • getTransactionAttribute

      @Nullable public TransactionAttribute getTransactionAttribute(Method method, @Nullable Class<?> targetClass)
      Determine the transaction attribute for this method invocation.

      Defaults to the class's transaction attribute if no method attribute is found.

      Specified by:
      getTransactionAttribute in interface TransactionAttributeSource
      method - the method for the current invocation (never null)
      targetClass - the target class for this invocation (may be null)
      a TransactionAttribute for this method, or null if the method is not transactional
    • getCacheKey

      protected Object getCacheKey(Method method, @Nullable Class<?> targetClass)
      Determine a cache key for the given method and target class.

      Must not produce same key for overloaded methods. Must produce same key for different instances of the same method.

      method - the method (never null)
      targetClass - the target class (may be null)
      the cache key (never null)
    • computeTransactionAttribute

      @Nullable protected TransactionAttribute computeTransactionAttribute(Method method, @Nullable Class<?> targetClass)
      Same signature as getTransactionAttribute(java.lang.reflect.Method, java.lang.Class<?>), but doesn't cache the result. getTransactionAttribute(java.lang.reflect.Method, java.lang.Class<?>) is effectively a caching decorator for this method.

      As of 4.1.8, this method can be overridden.

      See Also:
    • findTransactionAttribute

      @Nullable protected abstract TransactionAttribute findTransactionAttribute(Class<?> clazz)
      Subclasses need to implement this to return the transaction attribute for the given class, if any.
      clazz - the class to retrieve the attribute for
      all transaction attribute associated with this class, or null if none
    • findTransactionAttribute

      @Nullable protected abstract TransactionAttribute findTransactionAttribute(Method method)
      Subclasses need to implement this to return the transaction attribute for the given method, if any.
      method - the method to retrieve the attribute for
      all transaction attribute associated with this method, or null if none
    • allowPublicMethodsOnly

      protected boolean allowPublicMethodsOnly()
      Should only public methods be allowed to have transactional semantics?

      The default implementation returns false.