org.glassfish.api.jdbc.validation.PostgresConnectionValidation Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of payara-micro Show documentation
Micro Distribution of the Payara Project for IBM JDK
There is a newer version: 4.1.2.181
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010-2011 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

// Portions Copyright [2016] [Payara Foundation and/or its affiliates]

package org.glassfish.api.jdbc.validation;

import org.glassfish.api.jdbc.ConnectionValidation;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;

/**
 * Provide custom implementation of connection validation for postgres dbvendor.
 * 
 * Provides a custom connection validation 
 * mechanism for Postgres dbVendor if custom-validation is chosen as the 
 * connection-validation-method.
 * 
 * @author Shalini M
 */
public class PostgresConnectionValidation implements ConnectionValidation {

    private static final String SQL = "SELECT 1";
    
    /**
     * Check for validity of java.sql.Connection
     *
     * @param con       java.sql.Connectionto be validated
     * @param statementTimeout The time in seconds to wait for the query to complete
     * @return True if connection is valid
     */
    @Override
    public boolean isConnectionValid(Connection con, int statementTimeout) {
        boolean isValid = false;
        Statement stmt = null;
        try {
            stmt = con.createStatement();
            stmt.setQueryTimeout(statementTimeout);
            isValid = stmt.execute(SQL);
        } catch (SQLException sqle) {
            isValid = false;
        } finally {
            if (stmt != null) {
                try {
                    stmt.close();
                } catch (Exception ex) {
                }
            }
        }
        return isValid;        
    }
}