java.lang.AutoCloseable
, java.sql.Connection
, java.sql.Wrapper
, org.apache.commons.pool.KeyedPoolableObjectFactory
public class PoolingConnection extends DelegatingConnection implements java.sql.Connection, org.apache.commons.pool.KeyedPoolableObjectFactory
DelegatingConnection
that pools PreparedStatement
s.
The prepareStatement(java.lang.String)
and prepareCall(java.lang.String)
methods, rather than creating a new PreparedStatement
each time, may actually pull the statement from a pool of unused statements.
The Statement.close()
method of the returned statement doesn't
actually close the statement, but rather returns it to the pool.
(See PoolablePreparedStatement
, PoolableCallableStatement
.)
PoolablePreparedStatement
Constructor | Description |
---|---|
PoolingConnection(java.sql.Connection c) |
Constructor.
|
PoolingConnection(java.sql.Connection c,
org.apache.commons.pool.KeyedObjectPool pool) |
Constructor.
|
Modifier and Type | Method | Description |
---|---|---|
void |
abort(java.util.concurrent.Executor executor) |
|
void |
activateObject(java.lang.Object key,
java.lang.Object obj) |
KeyedPoolableObjectFactory method for activating
pooled statements. |
void |
close() |
Close and free all
PreparedStatement s or CallableStatement from the pool, and
close the underlying connection. |
void |
destroyObject(java.lang.Object key,
java.lang.Object obj) |
KeyedPoolableObjectFactory method for destroying
PoolablePreparedStatements and PoolableCallableStatements. |
int |
getNetworkTimeout() |
|
java.lang.String |
getSchema() |
|
java.lang.Object |
makeObject(java.lang.Object obj) |
KeyedPoolableObjectFactory method for creating
PoolablePreparedStatement s or PoolableCallableStatement s. |
void |
passivateObject(java.lang.Object key,
java.lang.Object obj) |
KeyedPoolableObjectFactory method for passivating
PreparedStatement s or CallableStatement s. |
java.sql.CallableStatement |
prepareCall(java.lang.String sql) |
Create or obtain a
CallableStatement from the pool. |
java.sql.CallableStatement |
prepareCall(java.lang.String sql,
int resultSetType,
int resultSetConcurrency) |
Create or obtain a
CallableStatement from the pool. |
java.sql.PreparedStatement |
prepareStatement(java.lang.String sql) |
Create or obtain a
PreparedStatement from the pool. |
java.sql.PreparedStatement |
prepareStatement(java.lang.String sql,
int resultSetType,
int resultSetConcurrency) |
Create or obtain a
PreparedStatement from the pool. |
void |
setNetworkTimeout(java.util.concurrent.Executor executor,
int milliseconds) |
|
void |
setSchema(java.lang.String schema) |
|
java.lang.String |
toString() |
Returns a string representation of the metadata associated with
the innnermost delegate connection.
|
boolean |
validateObject(java.lang.Object key,
java.lang.Object obj) |
KeyedPoolableObjectFactory method for validating
pooled statements. |
printStackTrace
beginRequest, clearWarnings, commit, createArrayOf, createBlob, createClob, createNClob, createSQLXML, createStatement, createStatement, createStatement, createStruct, endRequest, getAutoCommit, getCatalog, getClientInfo, getClientInfo, getHoldability, getMetaData, getTransactionIsolation, getTypeMap, getWarnings, isClosed, isReadOnly, isValid, nativeSQL, prepareCall, prepareStatement, prepareStatement, prepareStatement, prepareStatement, releaseSavepoint, rollback, rollback, setAutoCommit, setCatalog, setClientInfo, setClientInfo, setHoldability, setReadOnly, setSavepoint, setSavepoint, setShardingKey, setShardingKey, setShardingKeyIfValid, setShardingKeyIfValid, setTransactionIsolation, setTypeMap
clearWarnings, commit, createArrayOf, createBlob, createClob, createNClob, createSQLXML, createStatement, createStatement, createStatement, createStruct, equals, getAutoCommit, getCatalog, getClientInfo, getClientInfo, getDelegate, getHoldability, getInnermostDelegate, getMetaData, getTransactionIsolation, getTypeMap, getWarnings, hashCode, innermostDelegateEquals, isClosed, isReadOnly, isValid, isWrapperFor, nativeSQL, prepareCall, prepareStatement, prepareStatement, prepareStatement, prepareStatement, releaseSavepoint, rollback, rollback, setAutoCommit, setCatalog, setClientInfo, setClientInfo, setDelegate, setHoldability, setReadOnly, setSavepoint, setSavepoint, setTransactionIsolation, setTypeMap, unwrap
public PoolingConnection(java.sql.Connection c)
c
- the underlying Connection
.public PoolingConnection(java.sql.Connection c, org.apache.commons.pool.KeyedObjectPool pool)
c
- the underlying Connection
.pool
- KeyedObjectPool
of PreparedStatement
s and CallableStatement
s.public void abort(java.util.concurrent.Executor executor) throws java.sql.SQLException
abort
in interface java.sql.Connection
abort
in class DelegatingConnection
java.sql.SQLException
public void activateObject(java.lang.Object key, java.lang.Object obj) throws java.lang.Exception
KeyedPoolableObjectFactory
method for activating
pooled statements.activateObject
in interface org.apache.commons.pool.KeyedPoolableObjectFactory
key
- ignoredobj
- pooled statement to be activatedjava.lang.Exception
public void close() throws java.sql.SQLException
PreparedStatement
s or CallableStatement
from the pool, and
close the underlying connection.close
in interface java.lang.AutoCloseable
close
in interface java.sql.Connection
close
in class DelegatingConnection
java.sql.SQLException
public void destroyObject(java.lang.Object key, java.lang.Object obj) throws java.lang.Exception
KeyedPoolableObjectFactory
method for destroying
PoolablePreparedStatements and PoolableCallableStatements.
Closes the underlying statement.destroyObject
in interface org.apache.commons.pool.KeyedPoolableObjectFactory
key
- ignoredobj
- the pooled statement to be destroyed.java.lang.Exception
public int getNetworkTimeout() throws java.sql.SQLException
getNetworkTimeout
in interface java.sql.Connection
getNetworkTimeout
in class DelegatingConnection
java.sql.SQLException
public java.lang.String getSchema() throws java.sql.SQLException
getSchema
in interface java.sql.Connection
getSchema
in class DelegatingConnection
java.sql.SQLException
public java.lang.Object makeObject(java.lang.Object obj) throws java.lang.Exception
KeyedPoolableObjectFactory
method for creating
PoolablePreparedStatement
s or PoolableCallableStatement
s.
The stmtType
field in the key determines whether
a PoolablePreparedStatement or PoolableCallableStatement is created.makeObject
in interface org.apache.commons.pool.KeyedPoolableObjectFactory
obj
- the key for the PreparedStatement
to be createdjava.lang.Exception
createKey(String, int, int, byte)
public void passivateObject(java.lang.Object key, java.lang.Object obj) throws java.lang.Exception
KeyedPoolableObjectFactory
method for passivating
PreparedStatement
s or CallableStatement
s.
Invokes PreparedStatement.clearParameters()
.passivateObject
in interface org.apache.commons.pool.KeyedPoolableObjectFactory
key
- ignoredobj
- a PreparedStatement
java.lang.Exception
public java.sql.CallableStatement prepareCall(java.lang.String sql) throws java.sql.SQLException
CallableStatement
from the pool.prepareCall
in interface java.sql.Connection
prepareCall
in class DelegatingConnection
sql
- the sql string used to define the CallableStatementPoolableCallableStatement
java.sql.SQLException
public java.sql.CallableStatement prepareCall(java.lang.String sql, int resultSetType, int resultSetConcurrency) throws java.sql.SQLException
CallableStatement
from the pool.prepareCall
in interface java.sql.Connection
prepareCall
in class DelegatingConnection
sql
- the sql string used to define the CallableStatementresultSetType
- result set typeresultSetConcurrency
- result set concurrencyPoolableCallableStatement
java.sql.SQLException
public java.sql.PreparedStatement prepareStatement(java.lang.String sql) throws java.sql.SQLException
PreparedStatement
from the pool.prepareStatement
in interface java.sql.Connection
prepareStatement
in class DelegatingConnection
sql
- the sql string used to define the PreparedStatementPoolablePreparedStatement
java.sql.SQLException
public java.sql.PreparedStatement prepareStatement(java.lang.String sql, int resultSetType, int resultSetConcurrency) throws java.sql.SQLException
PreparedStatement
from the pool.prepareStatement
in interface java.sql.Connection
prepareStatement
in class DelegatingConnection
sql
- the sql string used to define the PreparedStatementresultSetType
- result set typeresultSetConcurrency
- result set concurrencyPoolablePreparedStatement
java.sql.SQLException
public void setNetworkTimeout(java.util.concurrent.Executor executor, int milliseconds) throws java.sql.SQLException
setNetworkTimeout
in interface java.sql.Connection
setNetworkTimeout
in class DelegatingConnection
java.sql.SQLException
public void setSchema(java.lang.String schema) throws java.sql.SQLException
setSchema
in interface java.sql.Connection
setSchema
in class DelegatingConnection
java.sql.SQLException
public java.lang.String toString()
DelegatingConnection
toString
in class DelegatingConnection
public boolean validateObject(java.lang.Object key, java.lang.Object obj)
KeyedPoolableObjectFactory
method for validating
pooled statements. Currently always returns true.validateObject
in interface org.apache.commons.pool.KeyedPoolableObjectFactory
key
- ignoredobj
- ignoredCopyright © 2001-2004 Apache Software Foundation. Documenation generated April 15 2019.