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java.lang.Object org.springframework.batch.support.transaction.TransactionAwareProxyFactory<T>
public class TransactionAwareProxyFactory<T>
Factory for transaction aware objects (like lists, sets, maps). If a
transaction is active when a method is called on an instance created by the
factory, it makes a copy of the target object and carries out all operations
on the copy. Only when the transaction commits is the target re-initialised
with the copy.
Works well with collections and maps for testing transactional behaviour
without needing a database. The base implementation handles lists, sets and
maps. Subclasses can implement begin(Object)
and
commit(Object, Object)
to provide support for other resources.
Not intended for multi-threaded use.
Method Summary | ||
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protected T |
begin(T target)
Make a copy of the target that can be used inside a transaction to isolate changes from the original. |
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protected void |
commit(T copy,
T target)
Take the working copy state and commit it back to the original target. |
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static
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createTransactionalList()
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static
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createTransactionalList(List<T> list)
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static
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createTransactionalMap()
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static
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createTransactionalMap(Map<K,V> map)
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static
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createTransactionalSet()
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static
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createTransactionalSet(Set<T> set)
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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protected final T begin(T target)
target
- the target object (List, Set or Map)
protected void commit(T copy, T target)
copy
- the working copy.target
- the original target of the factory.public static <K,V> Map<K,V> createTransactionalMap()
public static <K,V> Map<K,V> createTransactionalMap(Map<K,V> map)
public static <T> Set<T> createTransactionalSet()
public static <T> Set<T> createTransactionalSet(Set<T> set)
public static <T> List<T> createTransactionalList()
public static <T> List<T> createTransactionalList(List<T> list)
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