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*
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* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
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*/
/*
* ConnectionImpl.java
*
* Create on March 3, 2000
*/
package com.sun.jdo.spi.persistence.support.sqlstore.connection;
import com.sun.jdo.api.persistence.support.JDODataStoreException;
import com.sun.jdo.api.persistence.support.Transaction;
import com.sun.jdo.spi.persistence.support.sqlstore.ejb.EJBHelper;
import com.sun.jdo.spi.persistence.utility.Linkable;
import com.sun.jdo.spi.persistence.utility.logging.Logger;
import com.sun.jdo.spi.persistence.support.sqlstore.LogHelperSQLStore;
import java.sql.*;
/**
* This class implements the <code>java.sql.Connection</code>
* interface, which is part of the JDBC API. You should use
* the <code>java.sql.Connection</code> interface as an object
* type instead of this class.
*/
public class ConnectionImpl implements Connection, Linkable {
/*
* The associated JDBC Connection.
*/
private Connection connection;
/*
* The datasource url; e.g. "jdbc:oracle:oci7:@ABYSS_ORACLE".
*/
private String url;
/*
* User name.
*/
private String userName;
/*
* Previous ConnectionImpl in a chain.
*/
Linkable previous;
/*
* Next ConnectionImpl in a chain.
*/
Linkable next;
/*
* Indicates whether this ConnectionImpl is pooled.
*/
private boolean pooled;
/*
* The Transaction object for the associated transaction.
*/
private Transaction transaction;
/*
* Indicates whether this ConnectionImpl is to be freed on
* transaction termination.
*/
boolean freePending;
/*
* The resource interface that is registered with a transaction
* object.
*/
// private ForteJDBCResource resource;
/*
* The parent ConnectionManager object.
*/
ConnectionManager connectionManager;
/**
* The logger
*/
private static Logger logger = LogHelperSQLStore.getLogger();
/**
* Create a new ConnectionImpl object and keep a reference to
* the corresponding JDBC Connection.
*
* @param conn Connection
*/
public ConnectionImpl(Connection conn, String url, String userName,
ConnectionManager connMgr) {
super();
this.connection = conn;
this.url = url;
this.userName = userName;
this.previous = null;
this.next = null;
this.pooled = false;
this.transaction = null;
this.freePending = false;
// this.resource = null;
this.connectionManager = connMgr;
}
//----------------------------------------------------------------------
// Wrapper methods for JDBC Connection:
//
// Create a JDBC Statement to execute SQL statements without parameters.
// <p>
// @return A StatementImpl wrapper object.
// @exception SQLException if a database error occurs.
//
public synchronized Statement createStatement()
throws SQLException {
StatementImpl fstmt;
try {
this.checkXact();
fstmt = new StatementImpl(this, this.connection.createStatement());
} catch (SQLException se) {
throw se;
}
return ((Statement) fstmt);
}
public Statement createStatement(int resultSetType,
int resultSetConcurrency)
throws SQLException {
return (null);
}
public PreparedStatement prepareStatement(String sql, int resultSetType,
int resultSetConcurrency)
throws SQLException {
return (null);
}
public CallableStatement prepareCall(String sql,
int resultSetType,
int resultSetConcurrency)
throws SQLException {
return (null);
}
//
// Prepare a SQL statement, with or without parameters, that can be
// efficiently executed multiple times.
// <p>
// @param sql SQL statement.
// @return A StatementImpl wrapper object.
// @exception SQLException if a database error occurs.
//
public synchronized PreparedStatement prepareStatement(String sql)
throws SQLException {
PreparedStatementImpl fpstmt;
try {
this.checkXact();
fpstmt = new PreparedStatementImpl(this,
this.connection.prepareStatement(sql));
} catch (SQLException se) {
throw se;
}
return ((PreparedStatement) fpstmt);
}
//
// Prepare a SQL stored procedure call.
// <p>
// @parameter sql SQL stored procedure call.
// @return a ForteCallableStatement wrapper object.
// @exception SQLException if a database error occurs.
//
public synchronized CallableStatement prepareCall(String sql)
throws SQLException {
CallableStatementImpl fcstmt;
try {
this.checkXact();
fcstmt = new CallableStatementImpl(this,
this.connection.prepareCall(sql));
return ((CallableStatement) fcstmt);
} catch (SQLException se) {
throw se;
}
}
public synchronized String nativeSQL(String sql) throws SQLException {
try {
return (this.connection.nativeSQL(sql));
} catch (SQLException se) {
throw se;
}
}
public synchronized void setAutoCommit(boolean autoCommit)
throws SQLException {
try {
this.connection.setAutoCommit(autoCommit);
} catch (SQLException se) {
throw se;
}
}
public synchronized boolean getAutoCommit() throws SQLException {
try {
return (this.connection.getAutoCommit());
} catch (SQLException se) {
throw se;
}
}
public synchronized void commit() throws SQLException {
try {
this.connection.commit();
if (this.freePending) {
if (this.connectionManager.shutDownPending) {
try {
this.connection.close();
logger.finest("sqlstore.connectionimpl.commit"); // NOI18N
} catch (SQLException se) {
;
}
} else {
this.freePending = false;
this.connectionManager.freeList.insertAtTail(this);
}
}
if (EJBHelper.isManaged()) {
// this is for use with test 'ejb' only.
closeInternal();
}
} catch (SQLException se) {
throw se;
}
}
public synchronized void rollback() throws SQLException {
logger.finest("sqlstore.connectionimpl.rollback"); // NOI18N
try {
this.connection.rollback();
if (this.freePending) {
if (this.connectionManager.shutDownPending) {
this.connection.close();
logger.finest("sqlstore.connectionimpl.rollback.close"); // NOI18N
} else {
this.freePending = false;
this.connectionManager.freeList.insertAtTail(this);
}
}
if (EJBHelper.isManaged()) {
// this is for use with test 'ejb' only.
closeInternal();
}
} catch (SQLException se) {
throw se;
}
}
public synchronized void close() throws SQLException {
if (EJBHelper.isManaged()) {
logger.finest("sqlstore.connectionimpl.close"); // NOI18N
// ignore - this can happen in test 'ejb' only
return;
}
closeInternal();
}
private synchronized void closeInternal() throws SQLException {
boolean debug = logger.isLoggable(Logger.FINEST);
ConnectionImpl conn = (ConnectionImpl) this;
if (debug) {
logger.finest("sqlstore.connectionimpl.close_arg",conn); // NOI18N
}
try {
conn.connectionManager.busyList.removeFromList((Linkable) conn);
if (conn.xactPending() == true) {
conn.setFreePending(true);
if (debug) {
logger.finest("sqlstore.connectionimpl.close.freepending"); // NOI18N
}
} else if ((conn.getPooled() == true) && (conn.connectionManager.shutDownPending == false)) {
conn.connectionManager.freeList.insertAtTail((Linkable) conn);
if (debug) {
logger.finest("sqlstore.connectionimpl.close.putfreelist"); // NOI18N
}
} else {
if (EJBHelper.isManaged()) {
// RESOLVE: do we need it here?
this.connection.close();
if (debug) {
logger.finest("sqlstore.connectionimpl.close.exit"); // NOI18N
}
} else {
// Save reference to this connection and close it only when
// another free becomes available. This reduces time to
// get a new connection.
this.connectionManager.replaceFreeConnection(this);
if (debug) {
logger.finest("sqlstore.connectionimpl.close.replaced"); // NOI18N
}
}
}
} catch (SQLException se) {
throw se;
}
}
/**
* Called by ConnectionManager to close old connection when a new free connection
* becomes available
*/
protected void release() {
try {
this.connection.close();
} catch (SQLException se) {
// ignore
}
logger.finest("sqlstore.connectionimpl.close.connrelease"); // NOI18N
}
public synchronized boolean isClosed() throws SQLException {
try {
return (this.connection.isClosed());
} catch (SQLException se) {
throw se;
}
}
public synchronized DatabaseMetaData getMetaData() throws SQLException {
try {
return (this.connection.getMetaData());
} catch (SQLException se) {
throw se;
}
}
public synchronized void setReadOnly(boolean readOnly) throws SQLException {
try {
this.connection.setReadOnly(readOnly);
} catch (SQLException se) {
throw se;
}
}
public synchronized boolean isReadOnly() throws SQLException {
try {
return (this.connection.isReadOnly());
} catch (SQLException se) {
throw se;
}
}
public synchronized void setCatalog(String catalog) throws SQLException {
try {
this.connection.setCatalog(catalog);
} catch (SQLException se) {
throw se;
}
}
public synchronized String getCatalog() throws SQLException {
try {
return (this.connection.getCatalog());
} catch (SQLException se) {
throw se;
}
}
public synchronized void setTransactionIsolation(int level)
throws SQLException {
try {
this.connection.setTransactionIsolation(level);
} catch (SQLException se) {
throw se;
}
}
public synchronized int getTransactionIsolation() throws SQLException {
try {
return (this.connection.getTransactionIsolation());
} catch (SQLException se) {
throw se;
}
}
public synchronized SQLWarning getWarnings() throws SQLException {
try {
return (this.connection.getWarnings());
} catch (SQLException se) {
throw se;
}
}
public synchronized void clearWarnings() throws SQLException {
try {
this.connection.clearWarnings();
} catch (SQLException se) {
throw se;
}
}
public synchronized java.util.Map getTypeMap()
throws SQLException {
try {
return (this.connection.getTypeMap());
} catch (SQLException se) {
throw se;
}
}
public synchronized void setTypeMap(java.util.Map map)
throws SQLException {
try {
this.connection.setTypeMap(map);
} catch (SQLException se) {
throw se;
}
}
//-------------Begin New methods added in JDBC 3.0 --------------
public synchronized void setHoldability(int holdability)
throws SQLException {
throw new UnsupportedOperationException();
}
public synchronized int getHoldability()
throws SQLException {
throw new UnsupportedOperationException();
}
public synchronized Savepoint setSavepoint()
throws SQLException {
throw new UnsupportedOperationException();
}
public synchronized Savepoint setSavepoint(String name)
throws SQLException {
throw new UnsupportedOperationException();
}
public synchronized void rollback(Savepoint savepoint)
throws SQLException {
throw new UnsupportedOperationException();
}
public synchronized void releaseSavepoint(Savepoint savepoint)
throws SQLException {
throw new UnsupportedOperationException();
}
public synchronized Statement createStatement(int resultSetType,
int resultSetConcurrency,
int resultSetHoldability)
throws SQLException {
throw new UnsupportedOperationException();
}
public synchronized PreparedStatement prepareStatement(String sql,
int resultSetType,
int resultSetConcurrency,
int resultSetHoldability)
throws SQLException {
throw new UnsupportedOperationException();
}
public synchronized CallableStatement prepareCall(String sql,
int resultSetType,
int resultSetConcurrency,
int resultSetHoldability)
throws SQLException {
throw new UnsupportedOperationException();
}
public synchronized PreparedStatement prepareStatement(String sql,
int autoGeneratedKeys)
throws SQLException {
throw new UnsupportedOperationException();
}
public synchronized PreparedStatement prepareStatement(String sql,
int[] columnIndexes)
throws SQLException {
throw new UnsupportedOperationException();
}
public synchronized PreparedStatement prepareStatement(String sql,
String[] columnNames)
throws SQLException {
throw new UnsupportedOperationException();
}
//-------------End New methods added in JDBC 3.0 --------------
//---------------- ConnectionImpl methods ----------------
/**
* Check the TransactionContext. If the current thread is in a
* transaction, and the Connection is not participating in a
* transaction; the Connection should register a resource with
* the current thread's transaction. If the current thread is
* in a transaction, and the Connection is participating in a
* transaction; the thread's transaction and the Connection's
* transaction must be the same transaction. Anything else is
* an error.
* <p>
* @exception SQLException if the current thread's transaction
* and the Connection's transaction do
* not match.
* @ForteInternal
*/
synchronized void checkXact() throws SQLException {
/* RESOLVE: Need to reimplement this
* for CMP environment if any
Transaction tran;
try
{
tran = ThreadContext.transactionContext().getTransaction();
}
catch (SystemException ex)
{
tran = null;
}
if (tran == null)
{
if (this.transaction != null)
{
throw new SQLException("Thread is no longer in transaction."); // NOI18N
}
else
{
// No transaction.
return;
}
}
else if (this.transaction == null)
{
// This is a new transaction.
this.transaction = tran;
this.resource = new ForteJDBCResource(this);
try
{
TranManager tm = ThreadContext.partition().getTranManager();
tm.enlistResource(this.resource);
this.setAutoCommit(false);
}
catch (SQLException ex)
{
}
catch (Throwable ex)
{
// XXX This shouldn't happen. XXX
}
this.connectionManager.associateXact(tran, this);
}
else if (!tran.equals(this.transaction))
{
throw new SQLException("Wrong Transaction."); // NOI18N
}
else
{
// Connection and thread are in the same transaction.
return;
}
*/
}
/**
* Mark the Connection free-pending. A Connection gets into this
* state only if it is freed while still participating in a transaction.
* <p>
*/
synchronized void setFreePending(boolean freePending) {
this.freePending = freePending;
}
/**
* Get the value of the free-pending attribute.
* <p>
*/
synchronized boolean getFreePending() {
return (this.freePending);
}
/**
* Indicates whether this Connection is participating in a transaction.
* <p>
* @return True if this Connection is participating in a transaction;
* false, otherwise.
*/
synchronized boolean xactPending() {
return ((this.transaction != null) ? true : false);
}
/**
* Get the previous ConnectionImpl in a chain.
* <p>
* @return The previous ConnectionImpl in a chain.
*/
public Linkable getPrevious() {
return (this.previous);
}
/**
* Hook a ConnectionImpl to a chain.
* <p>
* @param conn The ConnectionImpl to hook on the chain.
*/
public void setPrevious(Linkable conn) {
this.previous = conn;
}
/**
* Get the next ConnectionImpl in a chain.
* <p>
* @return The next ConnectionImpl in a chain.
*/
public Linkable getNext() {
return (this.next);
}
/**
* Hook a ConnectionImpl to a chain.
* <p>
* @param conn The ConnectionImpl to hook on the chain.
*/
public void setNext(Linkable conn) {
this.next = conn;
}
/**
* Indicates whether this ConnectionImpl is pooled.
* <p>
* @return TRUE if this ConnectionImpl is pooled.
*/
synchronized boolean getPooled() {
return (this.pooled);
}
/**
* Mark this ConnectionImpl as pooled.
* <p>
*/
synchronized void setPooled(boolean flag) {
this.pooled = flag;
}
/**
* Get the url for this ConnectionImpl object.
* <p>
* @return String containing the url for this ConnectionImpl object.
*/
synchronized String getURL() {
return this.url;
}
/**
* Get the user name for this ConnectionImpl object.
* <p>
* @return String containing the user name for this
* ConnectionImpl object.
*/
synchronized String getUserName() {
return this.userName;
}
/**
* Used by TransactionImpl to commit the transaction on this
* Connection. Also disassociates this Connection from the
* transaction. Throws ... (javax.transaction.xa.XAException(XA_RBROLLBACK))
* on commit error.
* <p>
*/
public synchronized void internalCommit() {
logger.finest("sqlstore.connectionimpl.internalcommit"); // NOI18N
try {
this.connection.commit();
} catch (Exception e1) {
try {
this.connection.rollback();
} catch (Exception e2) {
// XXX Try to recover from bad connection. XXX
} finally {
this.clearXact();
}
throw new JDODataStoreException(null, e1); //XAException(XAException.XA_RBROLLBACK);
} finally {
this.clearXact();
}
}
/**
* Used by TransactionImpl to rollback the transaction on this
* Connection. Also disassociates this Connection from the
* transaction.
* <p>
*/
public synchronized void internalRollback() {
logger.finest("sqlstore.connectionimpl.internalrollback"); // NOI18N
try {
this.connection.rollback();
} catch (Exception e1) {
// XXX Try to recover from bad connection. XXX
} finally {
this.clearXact();
}
}
/**
* Clear this ConnectionImpl of any knowledge of a transaction.
* Also informs the parent ConnectionManager to clear its knowledge
* of the transaction as well.
* <p>
*/
private void clearXact() {
logger.finest("sqlstore.connectionimpl.clearxact"); // NOI18N
try {
if (this.freePending) {
this.freePending = false;
if (this.pooled) {
this.connectionManager.disassociateXact(this.transaction, this, true);
logger.finest("sqlstore.connectionimpl.pendingdisassocxact"); // NOI18N
} else {
this.connectionManager.disassociateXact(this.transaction, this, false);
// Make sure the last things done are the only things
// that can throw exceptions.
this.connection.close();
logger.finest("sqlstore.connectionimpl.clearxact.close"); // NOI18N
}
} else {
this.connectionManager.disassociateXact(this.transaction, this, false);
logger.finest("sqlstore.connectionimpl.clearxact.disassocxact"); // NOI18N
}
this.connection.setAutoCommit(true);
} catch (SQLException ex) {
// XXX Need to recover from a bad connection. XXX
} finally {
// this.resource = null;
this.transaction = null;
}
}
/**
* Return a string representation of this ConnectionImpl object.
* <p>
* @return String describing contents of this ConnectionImpl
* object.
*/
public synchronized String toString() {
int xactIsolation = 0;
String buffer = "Connect@"; // NOI18N
String strTran = (this.transaction == null) ?
" NULL" : this.transaction.toString(); // NOI18N
int hash = this.hashCode();
try {
xactIsolation = this.getTransactionIsolation();
} catch (SQLException ex) {
xactIsolation = -1;
}
buffer = buffer + hash + "\n" + // NOI18N
" pooled = " + this.pooled + "\n" + // NOI18N
" freePending = " + this.freePending + "\n" + // NOI18N
" xactIsolation = " + xactIsolation + "\n" + // NOI18N
" Tran = " + strTran + "\n"; // NOI18N
return buffer;
}
protected void finalize() {
try {
this.connection.close();
logger.finest("sqlstore.connectionimpl.finalize"); // NOI18N
} catch (SQLException se) {
;
}
}
}
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