com.h3c.util.persistence.cassandra.query

Class UpdateQuery<T extends TransportObject<? super T,?>,P extends Storable<?>,C>

java.lang.Object

com.h3c.util.persistence.cassandra.query.UpdateQuery<T,P,C>

Type Parameters:

T - Type of the query result

P - Type of the persisted object

C - Context for query execution

All Implemented Interfaces:

WriteQuery<T,C>

public class UpdateQuery<T extends TransportObject<? super T,?>,P extends Storable<?>,C>
extends Object
implements WriteQuery<T,C>

UpdateQuery is used to update data in the persistence layer. If the data to be updated does not exist, it will be created.

Constructor Summary

Constructors

Constructor and Description
UpdateQuery(T transportable, Dao<?,T,P,?,?,C> dao) Query to update data in the database tables.

Method Summary

Methods

Modifier and Type	Method and Description
T	execute(C context) Execute the update Query

Methods inherited from class java.lang.Object

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

Constructor Detail

UpdateQuery

public UpdateQuery(T transportable,
           Dao<?,T,P,?,?,C> dao)

Query to update data in the database tables.

Parameters:

transportable - Data in the database to be updated.

dao - Dao used to execute the update query.

Method Detail

execute

public T execute(C context)
                                               throws Exception

Execute the update Query

Specified by:

execute in interface WriteQuery<T extends TransportObject<? super T,?>,C>

Parameters:

context - context to execute the query.

Returns:

Result of Update Query.

Throws:

NullPointerException - In case of context is null.

Exception - Throws Exception in case of any error in query execute.