Java SQL Stored Procedure executeSqlScript(Connection connection, URL scriptUrl)

Description

Executes SQL script.

License

Apache License

Declaration

private static void executeSqlScript(Connection connection, URL scriptUrl) throws SQLException 

Method Source Code

//package com.java2s;
/*//  ww  w  .  j ava2s .c om
 * Copyright 2015-2017 Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags.
 *
 * 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.
 */

import java.io.IOException;
import java.io.InputStreamReader;

import java.net.URL;
import java.sql.Connection;

import java.sql.SQLException;

public class Main {
    /**
     * Executes SQL script.
     */
    private static void executeSqlScript(Connection connection, URL scriptUrl) throws SQLException {
        for (String sqlStatement : readSqlStatements(scriptUrl)) {
            if (!sqlStatement.trim().isEmpty()) {
                connection.prepareStatement(sqlStatement).executeUpdate();
            }
        }
    }

    /**
     * Reads SQL statements from file. SQL commands in file must be separated by
     * a semicolon.
     *
     * @param url url of the file
     * @return array of command  strings
     */
    private static String[] readSqlStatements(URL url) {
        try {
            char buffer[] = new char[256];
            StringBuilder result = new StringBuilder();
            InputStreamReader reader = new InputStreamReader(url.openStream(), "UTF-8");
            while (true) {
                int count = reader.read(buffer);
                if (count < 0) {
                    break;
                }
                result.append(buffer, 0, count);
            }
            return result.toString().split(";");
        } catch (IOException ex) {
            throw new RuntimeException("Cannot read " + url, ex);
        }
    }
}

Related

1. executeProcedure(Connection session, String sql)
2. executeSqlScript(Connection conn, InputStream inputFile)
3. createTestProcedure()