com.sun.gjc.spi.jdbc40

Class StatementWrapper40

java.lang.Object

com.sun.gjc.spi.base.StatementWrapper

com.sun.gjc.spi.jdbc40.StatementWrapper40

All Implemented Interfaces:

StatementLeakListener, AutoCloseable, Statement, Wrapper

public class StatementWrapper40
extends StatementWrapper

Wrapper for JDBC 4.0 Statement

Field Summary

Fields

Modifier and Type	Field and Description
protected static StringManager	localStrings

Fields inherited from class com.sun.gjc.spi.base.StatementWrapper

_logger, connection, executor, jdbcStatement, leakDetector, resultSetCount

Fields inherited from interface java.sql.Statement

CLOSE_ALL_RESULTS, CLOSE_CURRENT_RESULT, EXECUTE_FAILED, KEEP_CURRENT_RESULT, NO_GENERATED_KEYS, RETURN_GENERATED_KEYS, SUCCESS_NO_INFO

Constructor Summary

Constructors

Constructor and Description
StatementWrapper40(Connection con, Statement statement) Creates a new instance of StatementWrapper for JDBC 3.0

Method Summary

Modifier and Type	Method and Description
ResultSet	executeQuery(String sql) Executes the given SQL statement, which returns a single ResultSet object.
ResultSet	getGeneratedKeys() Retrieves any auto-generated keys created as a result of executing this Statement object.
ResultSet	getResultSet() Retrieves the current result as a ResultSet object.
boolean	isClosed() Retrieves whether this Statement object has been closed.
boolean	isPoolable() Returns a value indicating whether the Statement is poolable or not.
boolean	isWrapperFor(Class<?> iface) Returns true if this either implements the interface argument or is directly or indirectly a wrapper for an object that does.
void	setPoolable(boolean poolable) Requests that a Statement be pooled or not pooled.
<T> T	unwrap(Class<T> iface) Returns an object that implements the given interface to allow access to non-standard methods, or standard methods not exposed by the proxy.

Methods inherited from class com.sun.gjc.spi.base.StatementWrapper

actualCloseOnCompletion, addBatch, cancel, clearBatch, clearWarnings, close, closeOnCompletion, decrementResultSetCount, execute, execute, execute, execute, executeBatch, executeUpdate, executeUpdate, executeUpdate, executeUpdate, getActualConnection, getCloseOnCompletion, getConnection, getFetchDirection, getFetchSize, getMaxFieldSize, getMaxRows, getMoreResults, getMoreResults, getQueryTimeout, getResultSetConcurrency, getResultSetCount, getResultSetHoldability, getResultSetType, getUpdateCount, getWarnings, incrementResultSetCount, isCloseOnCompletion, isMarkedForReclaim, markForReclaim, reclaimStatement, setCursorName, setEscapeProcessing, setFetchDirection, setFetchSize, setMaxFieldSize, setMaxRows, setQueryTimeout

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.sql.Statement

executeLargeBatch, executeLargeUpdate, executeLargeUpdate, executeLargeUpdate, executeLargeUpdate, getLargeMaxRows, getLargeUpdateCount, setLargeMaxRows

Field Detail

localStrings

protected static final StringManager localStrings

Constructor Detail

StatementWrapper40

public StatementWrapper40(Connection con,
                          Statement statement)

Creates a new instance of StatementWrapper for JDBC 3.0

Parameters:

con - ConnectionWrapper

statement - Statement that is to be wrapped

Method Detail

isClosed

public boolean isClosed()
                 throws SQLException

Retrieves whether this Statement object has been closed. A Statement is closed if the method close has been called on it, or if it is automatically closed.

Returns:

true if this Statement object is closed; false if it is still open

Throws:

SQLException - if a database access error occurs

Since:

1.6

setPoolable

public void setPoolable(boolean poolable)
                 throws SQLException

Requests that a Statement be pooled or not pooled. The value specified is a hint to the statement pool implementation indicating whether the applicaiton wants the statement to be pooled. It is up to the statement pool manager as to whether the hint is used.

The poolable value of a statement is applicable to both internal statement caches implemented by the driver and external statement caches implemented by application servers and other applications.

By default, a Statement is not poolable when created, and a PreparedStatement and CallableStatement are poolable when created.

Parameters:

poolable - requests that the statement be pooled if true and that the statement not be pooled if false

Throws:

SQLException - if this method is called on a closed Statement

Since:

1.6

isPoolable

public boolean isPoolable()
                   throws SQLException

Returns a value indicating whether the Statement is poolable or not.

Returns:

true if the Statement is poolable; false otherwise

Throws:

SQLException - if this method is called on a closed Statement

Since:

1.6

See Also:

setPoolable(boolean)

unwrap

public <T> T unwrap(Class<T> iface)
             throws SQLException

Returns an object that implements the given interface to allow access to non-standard methods, or standard methods not exposed by the proxy.

If the receiver implements the interface then the result is the receiver or a proxy for the receiver. If the receiver is a wrapper and the wrapped object implements the interface then the result is the wrapped object or a proxy for the wrapped object. Otherwise return the the result of calling unwrap recursively on the wrapped object or a proxy for that result. If the receiver is not a wrapper and does not implement the interface, then an SQLException is thrown.

Parameters:

iface - A Class defining an interface that the result must implement.

Returns:

an object that implements the interface. May be a proxy for the actual implementing object.

Throws:

SQLException - If no object found that implements the interface

Since:

1.6

isWrapperFor

public boolean isWrapperFor(Class<?> iface)
                     throws SQLException

Returns true if this either implements the interface argument or is directly or indirectly a wrapper for an object that does. Returns false otherwise. If this implements the interface then return true, else if this is a wrapper then return the result of recursively calling isWrapperFor on the wrapped object. If this does not implement the interface and is not a wrapper, return false. This method should be implemented as a low-cost operation compared to unwrap so that callers can use this method to avoid expensive unwrap calls that may fail. If this method returns true then calling unwrap with the same argument should succeed.

Parameters:

iface - a Class defining an interface.

Returns:

true if this implements the interface or directly or indirectly wraps an object that does.

Throws:

SQLException - if an error occurs while determining whether this is a wrapper for an object with the given interface.

Since:

1.6

getGeneratedKeys

public ResultSet getGeneratedKeys()
                           throws SQLException

Retrieves any auto-generated keys created as a result of executing this Statement object. If this Statement object did not generate any keys, an empty ResultSet object is returned.

Note:If the columns which represent the auto-generated keys were not specified, the JDBC driver implementation will determine the columns which best represent the auto-generated keys.

Returns:

a ResultSet object containing the auto-generated key(s) generated by the execution of this Statement object

Throws:

SQLException - if a database access error occurs or this method is called on a closed Statement

SQLFeatureNotSupportedException - if the JDBC driver does not support this method

Since:

1.4

getResultSet

public ResultSet getResultSet()
                       throws SQLException

Retrieves the current result as a ResultSet object. This method should be called only once per result.

Returns:

the current result as a ResultSet object or null if the result is an update count or there are no more results

Throws:

SQLException - if a database access error occurs or this method is called on a closed Statement

See Also:

StatementWrapper.execute(java.lang.String)

executeQuery

public ResultSet executeQuery(String sql)
                       throws SQLException

Executes the given SQL statement, which returns a single ResultSet object.

Parameters:

sql - an SQL statement to be sent to the database, typically a static SQL SELECT statement

Returns:

a ResultSet object that contains the data produced by the given query; never null

Throws:

SQLException - if a database access error occurs, this method is called on a closed Statement or the given SQL statement produces anything other than a single ResultSet object