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
.PreparedStatementCache
Modifier | Constructor and Description |
---|---|
protected |
CachedPreparedStatementCreator(PreparedStatementCache cache,
com.datastax.oss.driver.api.core.cql.SimpleStatement statement)
Create a new
CachedPreparedStatementCreator . |
Modifier and Type | Method and Description |
---|---|
com.datastax.oss.driver.api.core.cql.PreparedStatement |
createPreparedStatement(com.datastax.oss.driver.api.core.CqlSession session)
Create a statement in this session.
|
PreparedStatementCache |
getCache() |
static CachedPreparedStatementCreator |
of(PreparedStatementCache cache,
com.datastax.oss.driver.api.core.cql.SimpleStatement statement)
Create a new
CachedPreparedStatementCreator given PreparedStatementCache and
SimpleStatement to prepare. |
static CachedPreparedStatementCreator |
of(PreparedStatementCache cache,
String cql)
|
static CachedPreparedStatementCreator |
of(PreparedStatementCache cache,
String cql,
QueryOptions queryOptions)
|
protected CachedPreparedStatementCreator(PreparedStatementCache cache, com.datastax.oss.driver.api.core.cql.SimpleStatement statement)
CachedPreparedStatementCreator
.cache
- must not be null.statement
- must not be null.public static CachedPreparedStatementCreator of(PreparedStatementCache cache, com.datastax.oss.driver.api.core.cql.SimpleStatement statement)
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.cache
- must not be null.statement
- must not be null.CachedPreparedStatementCreator
for Statement
.public static CachedPreparedStatementCreator of(PreparedStatementCache cache, String cql)
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.cache
- must not be null.cql
- must not be null or empty.CachedPreparedStatementCreator
for cql
.public static CachedPreparedStatementCreator of(PreparedStatementCache cache, String cql, QueryOptions queryOptions)
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.cache
- must not be null.cql
- must not be null or empty.queryOptions
- must not be null.CachedPreparedStatementCreator
for cql
.public PreparedStatementCache getCache()
PreparedStatementCache
.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
PreparedStatementCreator
PreparedStatement
.createPreparedStatement
in interface PreparedStatementCreator
session
- CqlSession
to use to create statement.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.Copyright © 2011–2020 Pivotal Software, Inc.. All rights reserved.