org.springframework.data.cassandra.core.cql.support

Class CachedPreparedStatementCreator

java.lang.Object

org.springframework.data.cassandra.core.cql.support.CachedPreparedStatementCreator

All Implemented Interfaces:

PreparedStatementCreator

Deprecated.

since 3.2, the Cassandra driver has a built-in prepared statement cache with makes external caching of prepared statements superfluous.

@Deprecated
public class CachedPreparedStatementCreator
extends Object
implements PreparedStatementCreator

PreparedStatementCreator implementation using caching of prepared statements.

Regular CQL statements are prepared on first use and executed as prepared statements. Prepared statements are cached by Cassandra itself (invalidation/eviction possible), in the driver to be able to re-prepare a statement and in this CachedPreparedStatementCreator using PreparedStatementCache.

Since:

2.0

Author:

Mark Paluch

See Also:

PreparedStatementCache

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	CachedPreparedStatementCreator(PreparedStatementCache cache, com.datastax.oss.driver.api.core.cql.SimpleStatement statement) Deprecated. Create a new CachedPreparedStatementCreator.

Method Summary

Modifier and Type	Method and Description
com.datastax.oss.driver.api.core.cql.PreparedStatement	createPreparedStatement(com.datastax.oss.driver.api.core.CqlSession session) Deprecated. Create a statement in this session.
PreparedStatementCache	getCache() Deprecated.
static CachedPreparedStatementCreator	of(PreparedStatementCache cache, com.datastax.oss.driver.api.core.cql.SimpleStatement statement) Deprecated. Create a new CachedPreparedStatementCreator given PreparedStatementCache and SimpleStatement to prepare.
static CachedPreparedStatementCreator	of(PreparedStatementCache cache, String cql) Deprecated. Create a new CachedPreparedStatementCreator given PreparedStatementCache and cql to prepare.
static CachedPreparedStatementCreator	of(PreparedStatementCache cache, String cql, QueryOptions queryOptions) Deprecated. Create a new CachedPreparedStatementCreator given PreparedStatementCache and cql to prepare.

Methods inherited from class java.lang.Object

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

Constructor Detail

CachedPreparedStatementCreator

protected CachedPreparedStatementCreator(PreparedStatementCache cache,
                                         com.datastax.oss.driver.api.core.cql.SimpleStatement statement)

Deprecated.

Create a new CachedPreparedStatementCreator.

Parameters:

cache - must not be null.

statement - must not be null.

Method Detail

of

public static CachedPreparedStatementCreator of(PreparedStatementCache cache,
                                                com.datastax.oss.driver.api.core.cql.SimpleStatement statement)

Deprecated.

Create a new CachedPreparedStatementCreator given PreparedStatementCache and SimpleStatement to prepare. Subsequent calls require the a SimpleStatement object with the same CQL test for a cache hit. Otherwise, the statement is likely to be re-prepared.

Parameters:

cache - must not be null.

statement - must not be null.

Returns:

the CachedPreparedStatementCreator for Statement.

of

public static CachedPreparedStatementCreator of(PreparedStatementCache cache,
                                                String cql)

Deprecated.

Create a new CachedPreparedStatementCreator given PreparedStatementCache and cql to prepare. Subsequent calls require the a CQL statement that are equal to the previously used CQL string for a cache hit. Otherwise, the statement is likely to be re-prepared.

Parameters:

cache - must not be null.

cql - must not be null or empty.

Returns:

the CachedPreparedStatementCreator for cql.

of

public static CachedPreparedStatementCreator of(PreparedStatementCache cache,
                                                String cql,
                                                QueryOptions queryOptions)

Deprecated.

Create a new CachedPreparedStatementCreator given PreparedStatementCache and cql to prepare. This method applies QueryOptions to the SimpleStatement before preparing it. Subsequent calls require the a CQL statement that are equal to the previously used CQL string for a cache hit. Otherwise, the statement is likely to be re-prepared.

Parameters:

cache - must not be null.

cql - must not be null or empty.

queryOptions - must not be null.

Returns:

the CachedPreparedStatementCreator for cql.

getCache

public PreparedStatementCache getCache()

Deprecated.

Returns:

the underlying PreparedStatementCache.

createPreparedStatement

public com.datastax.oss.driver.api.core.cql.PreparedStatement createPreparedStatement(com.datastax.oss.driver.api.core.CqlSession session)
                                                                               throws com.datastax.oss.driver.api.core.DriverException

Deprecated.

Description copied from interface: PreparedStatementCreator

Create a statement in this session. Allows implementations to use PreparedStatement.

Specified by:

createPreparedStatement in interface PreparedStatementCreator

Parameters:

session - CqlSession to use to create statement.

Returns:

a prepared statement.

Throws:

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