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com.hfg xml, html, svg, and bioinformatics utility library
package com.hfg.sql.jdbc;
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import java.sql.*;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.Executor;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.hfg.security.LoginCredentials;
import com.hfg.sql.SQLUtil;
import com.hfg.util.StackTraceUtil;
//------------------------------------------------------------------------------
/**
Represents an RDBMS database connection.
@author J. Alex Taylor, hairyfatguy.com
*/
//------------------------------------------------------------------------------
// com.hfg XML/HTML Coding Library
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// J. Alex Taylor, President, Founder, CEO, COO, CFO, OOPS hairyfatguy.com
// [email protected]
//------------------------------------------------------------------------------
public abstract class JDBCConnection implements Connection
{
private final Connection mInnerConn;
private JDBCServer mServer;
private String mDatabaseName;
private LoginCredentials mCredentials;
private JDBCConnectionSettings mSettings = new JDBCConnectionSettings();
private final static Logger LOGGER = Logger.getLogger(JDBCConnection.class.getName());
static
{
LOGGER.setLevel(Level.INFO);
}
//###########################################################################
// CONSTRUCTORS
//###########################################################################
//---------------------------------------------------------------------------
protected JDBCConnection(Connection inConnection)
{
mInnerConn = inConnection;
}
//---------------------------------------------------------------------------
protected JDBCConnection(JDBCServer inServer, String inDatabaseName, LoginCredentials inCredentials)
{
this(inServer, inDatabaseName, inCredentials, null);
}
//---------------------------------------------------------------------------
protected JDBCConnection(JDBCServer inServer, String inDatabaseName, LoginCredentials inCredentials, JDBCConnectionSettings inSettings)
{
mServer = inServer;
mDatabaseName = inDatabaseName;
mCredentials = inCredentials;
mSettings = inSettings;
mInnerConn = establishConnection();
}
//###########################################################################
// PUBLIC METHODS
//###########################################################################
//---------------------------------------------------------------------------
public static Logger getLogger()
{
return LOGGER;
}
//---------------------------------------------------------------------------
public boolean tableExists(String inTablename)
throws SQLException
{
boolean tableExists;
DatabaseMetaData metaData = getMetaData();
ResultSet rs = null;
try
{
rs = metaData.getTables(null, null, inTablename.toLowerCase(), null);
tableExists = (rs.next()
&& rs.getString("TABLE_NAME").equalsIgnoreCase(inTablename));
}
finally
{
if (rs != null) rs.close();
}
return tableExists;
}
//---------------------------------------------------------------------------
public boolean dropTable(String inTablename)
throws SQLException
{
return SQLUtil.execute(this, "DROP TABLE " + inTablename);
}
//---------------------------------------------------------------------------
public abstract String getCurrentUser()
throws SQLException;
//---------------------------------------------------------------------------
public boolean execute(String inSQL)
throws SQLException
{
return SQLUtil.execute(this, inSQL);
}
//---------------------------------------------------------------------------
public int[] batchExecute(String inSQL)
throws IOException, SQLException
{
return batchExecute(new StringReader(inSQL));
}
//---------------------------------------------------------------------------
public int[] batchExecute(Reader inSQL)
{
int[] results;
try
{
Statement stmt = null;
try
{
stmt = createStatement();
List sqlCmds = SQLUtil.splitBatchSQL(inSQL);
for (String sql : sqlCmds)
{
stmt.addBatch(sql);
}
results = stmt.executeBatch();
}
finally
{
SQLUtil.close(stmt);
}
}
catch (SQLException e)
{
// SQLExceptions are broken out separately so that we can expose the next exception if present.
throw new JDBCException(e);
}
catch (IOException e)
{
throw new JDBCException(e);
}
return results;
}
//---------------------------------------------------------------------------
public String name()
{
String connName = toString();
int index = connName.lastIndexOf(".");
if (index >= 0)
{
connName = connName.substring(index+ 1);
}
return connName;
}
//---------------------------------------------------------------------------
@Override
public Statement createStatement()
throws SQLException
{
return mInnerConn.createStatement();
}
@Override
public PreparedStatement prepareStatement(String inSQL)
throws SQLException
{
return mInnerConn.prepareStatement(inSQL);
}
@Override
public CallableStatement prepareCall(String inSQL)
throws SQLException
{
return mInnerConn.prepareCall(inSQL);
}
@Override
public String nativeSQL(String inSQL)
throws SQLException
{
return mInnerConn.nativeSQL(inSQL);
}
@Override
public void setAutoCommit(boolean inAutoCommit)
throws SQLException
{
// Don't spend time extracting the stack trace if it won't be logged anyway
if (LOGGER.getLevel() != null
&& LOGGER.getLevel().intValue() <= Level.FINE.intValue()
&& ! StackTraceUtil.getCallingMethodName().equals("setAutoCommit")) // Avoid double logging if the connection is wrapped
{
LOGGER.fine(name() + " autocommit set from " + mInnerConn.getAutoCommit() + " to " + inAutoCommit + " by " + StackTraceUtil.getCallingStackTraceElement(null).toString());
}
mInnerConn.setAutoCommit(inAutoCommit);
}
@Override
public boolean getAutoCommit()
throws SQLException
{
return mInnerConn.getAutoCommit();
}
@Override
public void commit()
throws SQLException
{
mInnerConn.commit();
}
@Override
public void rollback()
throws SQLException
{
mInnerConn.rollback();
}
@Override
public void close()
throws SQLException
{
mInnerConn.close();
}
@Override
public boolean isClosed()
throws SQLException
{
return mInnerConn.isClosed();
}
@Override
public DatabaseMetaData getMetaData()
throws SQLException
{
return mInnerConn.getMetaData();
}
@Override
public void setReadOnly(boolean inValue)
throws SQLException
{
mInnerConn.setReadOnly(inValue);
}
@Override
public boolean isReadOnly()
throws SQLException
{
return mInnerConn.isReadOnly();
}
@Override
public void setCatalog(String inValue)
throws SQLException
{
mInnerConn.setCatalog(inValue);
}
@Override
public String getCatalog()
throws SQLException
{
return mInnerConn.getCatalog();
}
@Override
public void setTransactionIsolation(int inLevel)
throws SQLException
{
mInnerConn.setTransactionIsolation(inLevel);
}
@Override
public int getTransactionIsolation()
throws SQLException
{
return mInnerConn.getTransactionIsolation();
}
@Override
public SQLWarning getWarnings()
throws SQLException
{
return mInnerConn.getWarnings();
}
@Override
public void clearWarnings()
throws SQLException
{
mInnerConn.clearWarnings();
}
@Override
public Statement createStatement(int resultSetType, int resultSetConcurrency)
throws SQLException
{
return mInnerConn.createStatement(resultSetType, resultSetConcurrency);
}
@Override
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency)
throws SQLException
{
return mInnerConn.prepareStatement(sql, resultSetType, resultSetConcurrency);
}
@Override
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency)
throws SQLException
{
return mInnerConn.prepareCall(sql, resultSetType, resultSetConcurrency);
}
@Override
public Map> getTypeMap()
throws SQLException
{
return mInnerConn.getTypeMap();
}
@Override
public void setTypeMap(Map> map)
throws SQLException
{
mInnerConn.setTypeMap(map);
}
@Override
public void setHoldability(int inValue)
throws SQLException
{
mInnerConn.setHoldability(inValue);
}
@Override
public int getHoldability()
throws SQLException
{
return mInnerConn.getHoldability();
}
@Override
public Savepoint setSavepoint()
throws SQLException
{
return mInnerConn.setSavepoint();
}
@Override
public Savepoint setSavepoint(String name)
throws SQLException
{
return mInnerConn.setSavepoint(name);
}
@Override
public void rollback(Savepoint savepoint)
throws SQLException
{
mInnerConn.rollback(savepoint);
}
@Override
public void releaseSavepoint(Savepoint savepoint)
throws SQLException
{
mInnerConn.releaseSavepoint(savepoint);
}
@Override
public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability)
throws SQLException
{
return mInnerConn.createStatement(resultSetType, resultSetConcurrency, resultSetHoldability);
}
@Override
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability)
throws SQLException
{
return mInnerConn.prepareStatement(sql, resultSetType, resultSetConcurrency, resultSetHoldability);
}
@Override
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability)
throws SQLException
{
return mInnerConn.prepareCall(sql, resultSetType, resultSetConcurrency, resultSetHoldability);
}
@Override
public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys)
throws SQLException
{
return mInnerConn.prepareStatement(sql, autoGeneratedKeys);
}
@Override
public PreparedStatement prepareStatement(String sql, int[] columnIndexes)
throws SQLException
{
return mInnerConn.prepareStatement(sql, columnIndexes);
}
@Override
public PreparedStatement prepareStatement(String sql, String[] columnNames)
throws SQLException
{
return mInnerConn.prepareStatement(sql, columnNames);
}
@Override
public Clob createClob()
throws SQLException
{
return mInnerConn.createClob();
}
@Override
public Blob createBlob()
throws SQLException
{
return mInnerConn.createBlob();
}
@Override
public NClob createNClob()
throws SQLException
{
return mInnerConn.createNClob();
}
@Override
public SQLXML createSQLXML()
throws SQLException
{
return mInnerConn.createSQLXML();
}
@Override
public boolean isValid(int timeout)
throws SQLException
{
return mInnerConn.isValid(timeout);
}
@Override
public void setClientInfo(String name, String value)
throws SQLClientInfoException
{
mInnerConn.setClientInfo(name, value);
}
@Override
public void setClientInfo(Properties properties)
throws SQLClientInfoException
{
mInnerConn.setClientInfo(properties);
}
@Override
public String getClientInfo(String name)
throws SQLException
{
return mInnerConn.getClientInfo(name);
}
@Override
public Properties getClientInfo()
throws SQLException
{
return mInnerConn.getClientInfo();
}
@Override
public Array createArrayOf(String typeName, Object[] elements)
throws SQLException
{
return mInnerConn.createArrayOf(typeName, elements);
}
@Override
public Struct createStruct(String typeName, Object[] attributes)
throws SQLException
{
return mInnerConn.createStruct(typeName, attributes);
}
@Override
public void setSchema(String schema)
throws SQLException
{
mInnerConn.setSchema(schema);
}
@Override
public String getSchema()
throws SQLException
{
return mInnerConn.getSchema();
}
@Override
public void abort(Executor executor)
throws SQLException
{
mInnerConn.abort(executor);
}
@Override
public void setNetworkTimeout(Executor executor, int milliseconds)
throws SQLException
{
mInnerConn.setNetworkTimeout(executor, milliseconds);
}
@Override
public int getNetworkTimeout()
throws SQLException
{
return mInnerConn.getNetworkTimeout();
}
@Override
public T unwrap(Class iface)
throws SQLException
{
return mInnerConn.unwrap(iface);
}
@Override
public boolean isWrapperFor(Class iface)
throws SQLException
{
return mInnerConn.isWrapperFor(iface);
}
//###########################################################################
// PROTECTED METHODS
//###########################################################################
//---------------------------------------------------------------------------
protected Connection getInnerConnection()
{
return mInnerConn;
}
//###########################################################################
// PRIVATE METHODS
//###########################################################################
//---------------------------------------------------------------------------
private Connection establishConnection()
{
return mServer.getConnection(mDatabaseName, mCredentials, mSettings);
}
}