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package com.sun.gjc.spi.jdbc40;
import com.sun.enterprise.util.i18n.StringManager;
import com.sun.gjc.spi.ManagedConnectionFactoryImpl;
import com.sun.gjc.spi.base.StatementWrapper;
import java.sql.*;
/**
* Wrapper for JDBC 4.0 Statement
*/
public class StatementWrapper40 extends StatementWrapper {
protected final static StringManager localStrings =
StringManager.getManager(ManagedConnectionFactoryImpl.class);
/**
* Creates a new instance of StatementWrapper for JDBC 3.0
*
* @param con ConnectionWrapper
* @param statement Statement that is to be wrapped
*/
public StatementWrapper40(Connection con, Statement statement) {
super(con, statement);
}
/**
* 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.
*
* @return true if this Statement object is closed; false if it is still open
* @throws SQLException if a database access error occurs
* @since 1.6
*/
public boolean isClosed() throws SQLException {
return jdbcStatement.isClosed();
}
/**
* 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.
*
*
* @param 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
*/
public void setPoolable(boolean poolable) throws SQLException {
jdbcStatement.setPoolable(poolable);
}
/**
* Returns a value indicating whether the Statement
* is poolable or not.
*
*
* @throws SQLException if this method is called on a closed
* Statement
*
* @return true if the Statement
* is poolable; false otherwise
*
* @see java.sql.Statement#setPoolable(boolean) setPoolable(boolean)
* @since 1.6
*
*/
public boolean isPoolable() throws SQLException {
return jdbcStatement.isPoolable();
}
/**
* 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.
*
* @param iface A Class defining an interface that the result must implement.
* @return an object that implements the interface. May be a proxy for the actual implementing object.
* @throws java.sql.SQLException If no object found that implements the interface
* @since 1.6
*/
public T unwrap(Class iface) throws SQLException {
T result;
if (iface.isInstance(this)) {
result = iface.cast(this);
} else {
result = jdbcStatement.unwrap(iface);
}
return result;
}
/**
* 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.
*
* @param iface a Class defining an interface.
* @return true if this implements the interface or directly or indirectly wraps an object that does.
* @throws java.sql.SQLException if an error occurs while determining whether this is a wrapper
* for an object with the given interface.
* @since 1.6
*/
public boolean isWrapperFor(Class iface) throws SQLException {
boolean result;
if (iface.isInstance(this)) {
result = true;
} else {
result = jdbcStatement.isWrapperFor(iface);
}
return result;
}
/**
* 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.
*
* @return 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
* @throws java.sql.SQLFeatureNotSupportedException
* if the JDBC driver does not support this method
* @since 1.4
*/
public java.sql.ResultSet getGeneratedKeys() throws java.sql.SQLException {
ResultSet rs = jdbcStatement.getGeneratedKeys();
if (rs == null)
return null;
return new ResultSetWrapper40(this, rs);
}
/**
* Retrieves the current result as a ResultSet object.
* This method should be called only once per result.
*
* @return 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 #execute
*/
public java.sql.ResultSet getResultSet() throws java.sql.SQLException {
ResultSet rs = jdbcStatement.getResultSet();
if (rs == null)
return null;
return new ResultSetWrapper40(this, rs);
}
/**
* Executes the given SQL statement, which returns a single
* ResultSet object.
*
* @param sql an SQL statement to be sent to the database, typically a
* static SQL SELECT statement
* @return 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
*/
public java.sql.ResultSet executeQuery(final String sql) throws
java.sql.SQLException {
ResultSet rs = jdbcStatement.executeQuery(sql);
return new ResultSetWrapper40(this, rs);
}
}