org.kawanfw.sql.json.ConnectionHolder Maven / Gradle / Ivy

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/*
 * This file is part of AceQL. 
 * AceQL: Remote JDBC access over HTTP.                                     
 * Copyright (C) 2015,  KawanSoft SAS
 * (http://www.kawansoft.com). All rights reserved.                                
 *                                                                               
 * AceQL 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.            
 *                                                                               
 * AceQL 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., 51 Franklin Street, Fifth Floor, Boston, MA  
 * 02110-1301  USA
 *
 * Any modifications to this file must keep this entire header
 * intact.
 */
package org.kawanfw.sql.json;

import java.io.Serializable;
import java.sql.Connection;
import java.sql.SQLException;

import org.kawanfw.sql.jsontypes.ConParms;

/**
 * 
 * Holder for Connection properties to be transmitted from client to server:
 * auto commit mode / read only mode/ transaction isolation level
 * 
 * @author Nicolas de Pomereu
 */
public class ConnectionHolder implements Serializable {
    /**
     * Cleaner to have serialVersionUID
     */
    private static final long serialVersionUID = -8608148000324639571L;

    /**
     * Properties are stored in a int array. Name is short for fast JSON
     * Transport
     */
    int[] coP = new int[ConParms.NUM_PARMS];

    /**
     * No args constructor for JSon
     */
    public ConnectionHolder() {

    }

    /**
     * Constructor.
     * 
     * @param connection
     *            the JDBC Connection
     */
    public ConnectionHolder(Connection connection) throws SQLException {
	if (connection == null) {
	    throw new IllegalArgumentException("connection is null!");
	}

	coP[ConParms.AUTO_COMMIT] = connection.getAutoCommit() ? 1 : 0;
	coP[ConParms.READ_ONLY] = connection.isReadOnly() ? 1 : 0;
	coP[ConParms.TRANSACTION_ISOLATION] = connection
		.getTransactionIsolation();
    }

    /**
     * @return the autoCommit
     */
    public boolean isAutoCommit() {
	return coP[ConParms.AUTO_COMMIT] == 1 ? true : false;
    }

    /**
     * @return the readOnly
     */
    public boolean isReadOnly() {
	return coP[ConParms.READ_ONLY] == 1 ? true : false;
    }

    /**
     * @return the transactionIsolation
     */
    public int getTransactionIsolation() {
	return coP[ConParms.TRANSACTION_ISOLATION];
    }

}