com.hp.util.dao

Interface DataStoreService

All Known Implementing Classes:

DataStoreManager

public interface DataStoreService

Provides services to interact with the persistence data store.

Author:

Robert Gagnon, Edwin Dalorzo

Method Summary

Methods

Modifier and Type	Method and Description
<T> T	execute(ReadQuery<T> query) Executes a query operation on the persistence layer.
<T> T	execute(WriteQuery<T> update) Executes an update operation on the persistence layer.

Method Detail

execute

<T> T execute(ReadQuery<T> query)
          throws Exception

Executes a query operation on the persistence layer.

Type Parameters:

T - type of the query result.

Parameters:

query - the query to execute.

Returns:

the query result.

Throws:

Exception - if exception happen while executing the query.

execute

<T> T execute(WriteQuery<T> update)
          throws Exception

Executes an update operation on the persistence layer.

Type Parameters:

T - type of the update result.

Parameters:

update - the database update to execute.

Returns:

the update result.

Throws:

Exception - if exception happen while executing the update.