com.h3c.util.persistence.cassandra.query

Class TransWriteWithSelStarDecorator<T extends TransportObject<? super T,?>>

java.lang.Object

com.h3c.util.persistence.cassandra.query.WriteQueryDecorator<T,DataStoreContext>

com.h3c.util.persistence.cassandra.query.TransWriteWithSelStarDecorator<T>

Type Parameters:

T - Type of the TransportObject object

All Implemented Interfaces:

WriteQuery<T,DataStoreContext>

public class TransWriteWithSelStarDecorator<T extends TransportObject<? super T,?>>
extends WriteQueryDecorator<T,DataStoreContext>

TransWriteWithSelectStar is a concrete decorator that provides a write query with locks and taking into account a select * operation on the database.
If there is a read all operation in progress, this write operation will wait for the completion of the read operation.

Method Summary

Methods

Modifier and Type	Method and Description
T	execute(DataStoreContext context) This is the single execute method provided by the WriteQuery interface.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

execute

public T execute(DataStoreContext context)
                                               throws Exception

Description copied from interface: WriteQuery

This is the single execute method provided by the WriteQuery interface. The application/business logic prepares a write query and as the last step, calls this method to transmit data to the underlying tiers. This data is persisted using DAO and Entity Manager.

Parameters:

context - - The DataStore context. Provides the context to the query.

Returns:

Transport object that has been persisted/deleted.

Throws:

Exception