org.springframework.cassandra.core

Class CachedPreparedStatementCreator

java.lang.Object

org.springframework.cassandra.core.CachedPreparedStatementCreator

All Implemented Interfaces:

PreparedStatementCreator

public class CachedPreparedStatementCreator
extends Object
implements PreparedStatementCreator

This Prepared Statement Creator maintains a cache of all prepared statements for the duration of this life of the container. When preparing statements with Cassandra, each Statement should be prepared once and only once due to the overhead of preparing the statement.

Author:

David Webb

Constructor Summary

Constructors

Constructor and Description
CachedPreparedStatementCreator(String cql) Create a PreparedStatementCreator from the provided CQL.

Method Summary

Modifier and Type	Method and Description
com.datastax.driver.core.PreparedStatement	createPreparedStatement(com.datastax.driver.core.Session session) Create a statement in this session.
String	getCql()

Methods inherited from class java.lang.Object

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

Constructor Detail

CachedPreparedStatementCreator

public CachedPreparedStatementCreator(String cql)

Create a PreparedStatementCreator from the provided CQL.

Parameters:

cql -

Method Detail

getCql

public String getCql()

createPreparedStatement

public com.datastax.driver.core.PreparedStatement createPreparedStatement(com.datastax.driver.core.Session session)
                                                                   throws com.datastax.driver.core.exceptions.DriverException

Description copied from interface: PreparedStatementCreator

Create a statement in this session. Allows implementations to use PreparedStatements. The CassandraTemlate will attempt to cache the PreparedStatement for future use without the overhead of re-preparing on the entire cluster.

Specified by:

createPreparedStatement in interface PreparedStatementCreator

Parameters:

session - Session to use to create statement

Returns:

a prepared statement

Throws:

com.datastax.driver.core.exceptions.DriverException - there is no need to catch DriverException that may be thrown in the implementation of this method. The CassandraTemlate class will handle them.