kenh.xscript.database.elements.Rollback.java Source code

Introduction

Here is the source code for kenh.xscript.database.elements.Rollback.java

Source

/*
 * xScript.database ( Database for XML Script Language)
 * Copyright 2015 and beyond, Kenneth Huang
 * 
 * This file is part of xScript.database.
 * 
 * xScript.database is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * as published by the Free Software Foundation.
 * 
 * xScript.database 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 xScript.database.  If not, see <http://www.gnu.org/licenses/>. 
 */

package kenh.xscript.database.elements;

import kenh.expl.UnsupportedExpressionException;
import kenh.xscript.annotation.Attribute;
import kenh.xscript.annotation.Processing;
import kenh.xscript.annotation.Text;
import kenh.xscript.impl.*;
import kenh.xscript.*;

import java.util.*;

import javax.sql.DataSource;

import org.apache.commons.lang3.StringUtils;

/**
 * Rollback element. Undoes all changes made in the current transaction of database connection.
 * 
 * @author Kenneth
 * @version 1.0
 *
 */
public class Rollback extends NoChildElement {

    private static final String ATTRIBUTE_REF = "ref"; // reference name of database connection
    private static final String ATTRIBUTE_SAVE_POINT = "save-point"; // reference name of savepoint

    public void process(@Attribute(ATTRIBUTE_REF) java.sql.Connection conn,
            @Attribute(ATTRIBUTE_SAVE_POINT) java.sql.Savepoint savepoint) throws UnsupportedScriptException {
        try {
            if (!conn.isClosed()) {
                if (!conn.getAutoCommit()) {
                    if (savepoint != null) {
                        conn.rollback(savepoint);
                    } else {
                        conn.rollback();
                    }
                }
            }
        } catch (Exception e) {
            throw new UnsupportedScriptException(this, e);
        }
    }

    public void process(@Attribute(ATTRIBUTE_REF) java.sql.Connection conn,
            @Attribute(ATTRIBUTE_SAVE_POINT) String savepoint) throws UnsupportedScriptException {
        java.sql.Savepoint sp = this.getEnvironment().getVariable(savepoint, java.sql.Savepoint.class);
        process(conn, sp);

    }

    public void process(@Attribute(ATTRIBUTE_REF) String ref,
            @Attribute(ATTRIBUTE_SAVE_POINT) java.sql.Savepoint savepoint) throws UnsupportedScriptException {
        java.sql.Connection conn = this.getEnvironment().getVariable(ref, java.sql.Connection.class);
        process(conn, savepoint);
    }

    public void process(@Attribute(ATTRIBUTE_REF) String ref, @Attribute(ATTRIBUTE_SAVE_POINT) String savepoint)
            throws UnsupportedScriptException {
        java.sql.Connection conn = this.getEnvironment().getVariable(ref, java.sql.Connection.class);
        process(conn, savepoint);

    }

    public void process(@Attribute(ATTRIBUTE_REF) java.sql.Connection conn) throws UnsupportedScriptException {
        process(conn, (java.sql.Savepoint) null);
    }

    public void process(@Attribute(ATTRIBUTE_REF) String ref) throws UnsupportedScriptException {
        process(ref, (java.sql.Savepoint) null);
    }

}