LrcConnectionHandle.java

/**
 * Copyright 2010 JBoss Inc
 *
 * 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 bitronix.tm.resource.jdbc.lrc;

import java.sql.*;
import java.util.Map;

/**
 * Connection handle implementation for a non-XA JDBC resource emulating XA with Last Resource Commit.
 * <p>© <a href="http://www.bitronix.be">Bitronix Software</a></p>
 *
 * @author lorban
 */
public class LrcConnectionHandle implements Connection {

    private Connection delegate;
    private LrcXAResource xaResource;

    public LrcConnectionHandle(LrcXAResource xaResource, Connection delegate) {
        this.delegate = delegate;
        this.xaResource = xaResource;
    }

    public Connection getConnection() {
        return delegate;
    }

    private Connection getDelegate() throws SQLException {
        if (delegate == null)
            throw new SQLException("connection is closed");
        return delegate;
    }

    /* wrapped Connection methods that have special XA semantics */

    public void close() throws SQLException {
        delegate = null;
    }

    public boolean isClosed() throws SQLException {
        return delegate == null;
    }

    public boolean getAutoCommit() throws SQLException {
        return getDelegate().getAutoCommit();
    }

    public void setAutoCommit(boolean autoCommit) throws SQLException {
        if (xaResource.getState() != LrcXAResource.NO_TX && autoCommit)
            throw new SQLException("XA transaction started, cannot enable autocommit mode");
        getDelegate().setAutoCommit(autoCommit);
    }

    public void commit() throws SQLException {
        if (xaResource.getState() != LrcXAResource.NO_TX)
            throw new SQLException("XA transaction started, cannot call commit directly on connection");
        getDelegate().commit();
    }

    public void rollback() throws SQLException {
        if (xaResource.getState() != LrcXAResource.NO_TX)
            throw new SQLException("XA transaction started, cannot call rollback directly on connection");
        getDelegate().rollback();
    }

    public void rollback(Savepoint savepoint) throws SQLException {
        if (xaResource.getState() != LrcXAResource.NO_TX)
            throw new SQLException("XA transaction started, cannot call rollback directly on connection");
        getDelegate().rollback(savepoint);
    }

    public String toString() {
        return "a JDBC LrcConnectionHandle on " + xaResource;
    }

    /* dumb wrapping of Connection methods */

    public Statement createStatement() throws SQLException {
        return getDelegate().createStatement();
    }

    public Statement createStatement(int resultSetType, int resultSetConcurrency) throws SQLException {
        return getDelegate().createStatement(resultSetType, resultSetConcurrency);
    }

    public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
        return getDelegate().createStatement(resultSetType, resultSetConcurrency, resultSetHoldability);
    }

    public CallableStatement prepareCall(String sql) throws SQLException {
        return getDelegate().prepareCall(sql);
    }

    public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
        return getDelegate().prepareCall(sql, resultSetType, resultSetConcurrency);
    }

    public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
        return getDelegate().prepareCall(sql, resultSetType, resultSetConcurrency, resultSetHoldability);
    }

    public PreparedStatement prepareStatement(String sql) throws SQLException {
        return getDelegate().prepareStatement(sql);
    }

    public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException {
        return getDelegate().prepareStatement(sql, autoGeneratedKeys);
    }

    public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
        return getDelegate().prepareStatement(sql, resultSetType, resultSetConcurrency);
    }

    public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
        return getDelegate().prepareStatement(sql, resultSetType, resultSetConcurrency, resultSetHoldability);
    }

    public PreparedStatement prepareStatement(String sql, int[] columnIndexes) throws SQLException {
        return getDelegate().prepareStatement(sql, columnIndexes);
    }

    public PreparedStatement prepareStatement(String sql, String[] columnNames) throws SQLException {
        return getDelegate().prepareStatement(sql, columnNames);
    }

    public int getHoldability() throws SQLException {
        return getDelegate().getHoldability();
    }

    public int getTransactionIsolation() throws SQLException {
        return getDelegate().getTransactionIsolation();
    }

    public void clearWarnings() throws SQLException {
        getDelegate().clearWarnings();
    }

    public boolean isReadOnly() throws SQLException {
        return getDelegate().isReadOnly();
    }

    public void setHoldability(int holdability) throws SQLException {
        getDelegate().setHoldability(holdability);
    }

    public void setTransactionIsolation(int level) throws SQLException {
        getDelegate().setTransactionIsolation(level);
    }

    public void setReadOnly(boolean readOnly) throws SQLException {
        getDelegate().setReadOnly(readOnly);
    }

    public String getCatalog() throws SQLException {
        return getDelegate().getCatalog();
    }

    public void setCatalog(String catalog) throws SQLException {
        getDelegate().setCatalog(catalog);
    }

    public DatabaseMetaData getMetaData() throws SQLException {
        return getDelegate().getMetaData();
    }

    public SQLWarning getWarnings() throws SQLException {
        return getDelegate().getWarnings();
    }

    public Savepoint setSavepoint() throws SQLException {
        return getDelegate().setSavepoint();
    }

    public void releaseSavepoint(Savepoint savepoint) throws SQLException {
        getDelegate().releaseSavepoint(savepoint);
    }

    public Map getTypeMap() throws SQLException {
        return getDelegate().getTypeMap();
    }

    public void setTypeMap(Map map) throws SQLException {
        getDelegate().setTypeMap(map);
    }

    public String nativeSQL(String sql) throws SQLException {
        return getDelegate().nativeSQL(sql);
    }

    public Savepoint setSavepoint(String name) throws SQLException {
        return getDelegate().setSavepoint(name);
    }

}