com.h3c.util.persistence.cassandra.query

Class FindQuery<T extends TransportObject<? super T,?>,P extends Storable<?>,F,S,C>

java.lang.Object

com.h3c.util.persistence.cassandra.query.FindQuery<T,P,F,S,C>

Type Parameters:

T - Type of the Query result passed to business logic

P - Type of query result which incurred while dao executes the query.

F - Filter to find

S - Sort specification for sort the result

C - Type of context to execute the query.

All Implemented Interfaces:

ReadQuery<List<T>,C>

public class FindQuery<T extends TransportObject<? super T,?>,P extends Storable<?>,F,S,C>
extends Object
implements ReadQuery<List<T>,C>

Finds list of entries matches the filter condition from a database table and provide the result to business logic in the given sorted order.

Constructor Summary

Constructors

Constructor and Description
FindQuery(F filter, SortSpecification<S> sortSpec, Dao<?,T,P,F,S,C> dao) Creates a find query.

Method Summary

Methods

Modifier and Type	Method and Description
List<T>	execute(C context) Execute the find operation.

Methods inherited from class java.lang.Object

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

Constructor Detail

FindQuery

public FindQuery(F filter,
         SortSpecification<S> sortSpec,
         Dao<?,T,P,F,S,C> dao)

Creates a find query.

Parameters:

filter - Filter to apply.

sortSpec - Sort specification.

dao - The DAO to carry out the operation.

Method Detail

execute

public List<T> execute(C context)
                                                     throws Exception

Execute the find operation.

Specified by:

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

Parameters:

context - Context to execute the query

Returns:

result of Find Query.

Throws:

NullPointerException - In case of context is null.

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