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org.sqlite.javax.SQLitePooledConnection Maven / Gradle / Ivy
/*--------------------------------------------------------------------------
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*--------------------------------------------------------------------------*/
package org.sqlite.javax;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.sql.Array;
import java.sql.Blob;
import java.sql.CallableStatement;
import java.sql.Clob;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.NClob;
import java.sql.PreparedStatement;
import java.sql.SQLClientInfoException;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.SQLXML;
import java.sql.Savepoint;
import java.sql.Statement;
import java.sql.Struct;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.Executor;
import java.util.concurrent.atomic.AtomicBoolean;
import javax.sql.ConnectionEvent;
import javax.sql.ConnectionEventListener;
import org.sqlite.SQLiteConnection;
import org.sqlite.core.DB;
import org.sqlite.jdbc4.JDBC4PooledConnection;
import org.sqlite.jdbc4.JDBC4PreparedStatement;
import org.sqlite.jdbc4.JDBC4Statement;
public class SQLitePooledConnection extends JDBC4PooledConnection {
protected SQLiteConnection physicalConn;
protected volatile Connection handleConn;
protected List listeners = new ArrayList();
/**
* Constructor.
*
* @param physicalConn The physical Connection.
*/
protected SQLitePooledConnection(SQLiteConnection physicalConn) {
this.physicalConn = physicalConn;
}
public SQLiteConnection getPhysicalConn() {
return physicalConn;
}
/** @see javax.sql.PooledConnection#close() */
public void close() throws SQLException {
if (handleConn != null) {
listeners.clear();
handleConn.close();
}
if (physicalConn != null) {
try {
physicalConn.close();
} finally {
physicalConn = null;
}
}
}
/** @see javax.sql.PooledConnection#getConnection() */
public Connection getConnection() throws SQLException {
if (handleConn != null) handleConn.close();
handleConn =
(Connection)
Proxy.newProxyInstance(
getClass().getClassLoader(),
new Class[] {Connection.class},
new InvocationHandler() {
boolean isClosed;
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable {
try {
String name = method.getName();
if ("close".equals(name)) {
ConnectionEvent event =
new ConnectionEvent(
SQLitePooledConnection.this);
for (int i = listeners.size() - 1; i >= 0; i--) {
listeners.get(i).connectionClosed(event);
}
if (!physicalConn.getAutoCommit()) {
physicalConn.rollback();
}
physicalConn.setAutoCommit(true);
isClosed = true;
return null; // don't close physical connection
} else if ("isClosed".equals(name)) {
if (!isClosed)
isClosed =
((Boolean)
method.invoke(
physicalConn,
args))
.booleanValue();
return isClosed;
}
if (isClosed) {
throw new SQLException("Connection is closed");
}
return method.invoke(physicalConn, args);
} catch (SQLException e) {
if ("database connection closed"
.equals(e.getMessage())) {
ConnectionEvent event =
new ConnectionEvent(
SQLitePooledConnection.this, e);
for (int i = listeners.size() - 1; i >= 0; i--) {
listeners.get(i).connectionErrorOccurred(event);
}
}
throw e;
} catch (InvocationTargetException ex) {
throw ex.getCause();
}
}
});
return handleConn;
}
/**
* @see javax.sql.PooledConnection#addConnectionEventListener(javax.sql.ConnectionEventListener)
*/
public void addConnectionEventListener(ConnectionEventListener listener) {
listeners.add(listener);
}
/**
* @see
* javax.sql.PooledConnection#removeConnectionEventListener(javax.sql.ConnectionEventListener)
*/
public void removeConnectionEventListener(ConnectionEventListener listener) {
listeners.remove(listener);
}
public List getListeners() {
return listeners;
}
}
class SQLitePooledConnectionHandle extends SQLiteConnection {
private final SQLitePooledConnection parent;
private final AtomicBoolean isClosed = new AtomicBoolean(false);
public SQLitePooledConnectionHandle(SQLitePooledConnection parent) {
super(parent.getPhysicalConn().getDatabase());
this.parent = parent;
}
@Override
public Statement createStatement() throws SQLException {
return new JDBC4Statement(this);
}
@Override
public PreparedStatement prepareStatement(String sql) throws SQLException {
return new JDBC4PreparedStatement(this, sql);
}
@Override
public CallableStatement prepareCall(String sql) throws SQLException {
return null;
}
@Override
public String nativeSQL(String sql) throws SQLException {
return null;
}
@Override
public void setAutoCommit(boolean autoCommit) throws SQLException {}
@Override
public boolean getAutoCommit() throws SQLException {
return false;
}
@Override
public void commit() throws SQLException {}
@Override
public void rollback() throws SQLException {}
@Override
public void close() throws SQLException {
ConnectionEvent event = new ConnectionEvent(parent);
List listeners = parent.getListeners();
for (int i = listeners.size() - 1; i >= 0; i--) {
listeners.get(i).connectionClosed(event);
}
if (!parent.getPhysicalConn().getAutoCommit()) {
parent.getPhysicalConn().rollback();
}
parent.getPhysicalConn().setAutoCommit(true);
isClosed.set(true);
}
@Override
public boolean isClosed() {
return isClosed.get();
}
@Override
public DatabaseMetaData getMetaData() throws SQLException {
return null;
}
@Override
public void setReadOnly(boolean readOnly) throws SQLException {}
@Override
public boolean isReadOnly() throws SQLException {
return false;
}
@Override
public void setCatalog(String catalog) throws SQLException {}
@Override
public String getCatalog() throws SQLException {
return null;
}
@Override
public void setTransactionIsolation(int level) throws SQLException {}
@Override
public int getTransactionIsolation() {
return 0;
}
@Override
public SQLWarning getWarnings() throws SQLException {
return null;
}
@Override
public void clearWarnings() throws SQLException {}
@Override
public Statement createStatement(int resultSetType, int resultSetConcurrency)
throws SQLException {
return null;
}
@Override
public PreparedStatement prepareStatement(
String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
return null;
}
@Override
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency)
throws SQLException {
return null;
}
@Override
public Map> getTypeMap() throws SQLException {
return null;
}
@Override
public void setTypeMap(Map> map) throws SQLException {}
@Override
public void setHoldability(int holdability) throws SQLException {}
@Override
public int getHoldability() throws SQLException {
return 0;
}
@Override
public Savepoint setSavepoint() throws SQLException {
return null;
}
@Override
public Savepoint setSavepoint(String name) throws SQLException {
return null;
}
@Override
public void rollback(Savepoint savepoint) throws SQLException {}
@Override
public void releaseSavepoint(Savepoint savepoint) throws SQLException {}
@Override
public Statement createStatement(
int resultSetType, int resultSetConcurrency, int resultSetHoldability)
throws SQLException {
return null;
}
@Override
public PreparedStatement prepareStatement(
String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability)
throws SQLException {
return null;
}
@Override
public CallableStatement prepareCall(
String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability)
throws SQLException {
return null;
}
@Override
public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys)
throws SQLException {
return null;
}
@Override
public PreparedStatement prepareStatement(String sql, int[] columnIndexes) throws SQLException {
return null;
}
@Override
public PreparedStatement prepareStatement(String sql, String[] columnNames)
throws SQLException {
return null;
}
@Override
public Clob createClob() throws SQLException {
return null;
}
@Override
public Blob createBlob() throws SQLException {
return null;
}
@Override
public NClob createNClob() throws SQLException {
return null;
}
@Override
public SQLXML createSQLXML() throws SQLException {
return null;
}
@Override
public boolean isValid(int timeout) throws SQLException {
return false;
}
@Override
public void setClientInfo(String name, String value) throws SQLClientInfoException {}
@Override
public void setClientInfo(Properties properties) throws SQLClientInfoException {}
@Override
public String getClientInfo(String name) throws SQLException {
return null;
}
@Override
public Properties getClientInfo() throws SQLException {
return null;
}
@Override
public Array createArrayOf(String typeName, Object[] elements) throws SQLException {
return null;
}
@Override
public Struct createStruct(String typeName, Object[] attributes) throws SQLException {
return null;
}
@Override
public void setSchema(String schema) throws SQLException {}
@Override
public String getSchema() throws SQLException {
return null;
}
@Override
public void abort(Executor executor) throws SQLException {}
@Override
public void setNetworkTimeout(Executor executor, int milliseconds) throws SQLException {}
@Override
public int getNetworkTimeout() throws SQLException {
return 0;
}
@Override
public T unwrap(Class iface) throws SQLException {
return null;
}
@Override
public boolean isWrapperFor(Class iface) throws SQLException {
return false;
}
@Override
public int getBusyTimeout() {
return 0;
}
@Override
public void setBusyTimeout(int timeoutMillis) {}
@Override
public DB getDatabase() {
return null;
}
}
