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The AceQL Java Client SDK allows to wrap the AceQL HTTP APIs and eliminate the tedious works of handling communications errors and parsing JSON results. Android and Java Desktop application developers can access remote SQL databases and/or SQL databases in the cloud by simply including standard JDBC calls in their code, just like they would for a local database.

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/*
 * This file is part of AceQL Client SDK.
 * AceQL Client SDK: Remote JDBC access over HTTP with AceQL HTTP.
 * Copyright (C) 2020,  KawanSoft SAS
 * (http://www.kawansoft.com). All rights reserved.
 *
 * 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 com.aceql.client.test;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Date;

import com.aceql.client.jdbc.AceQLConnection;
import com.aceql.client.jdbc.AceQLException;
import com.aceql.client.test.connection.ConnectionBuilder;
import com.aceql.client.test.connection.ConnectionParms;

/**
 * @author Nicolas de Pomereu
 *
 */
public class AceQLConnectionTestUpdate {

    public static void main(String[] args) throws Exception {

	boolean doContinue = true;
	while (doContinue) {
	    doIt();
	    doContinue = false;
	}
    }

    public static void doIt() throws SQLException, AceQLException, FileNotFoundException, IOException {
	new File(ConnectionParms.IN_DIRECTORY).mkdirs();
	new File(ConnectionParms.OUT_DIRECTORY).mkdirs();

	// Get a real Connection instance that points to remote AceQL server
	Connection connection = ConnectionBuilder.createOnConfig();

	connection.setAutoCommit(true);

	if (connection instanceof AceQLConnection) {
	    ((AceQLConnection) connection).setTraceOn(true);
	    ((AceQLConnection) connection).setGzipResult(true);
	    System.out.println();
	    System.out.println(
		    "aceQLConnection.getServerVersion(): " + ((AceQLConnection) connection).getServerVersion());
	    System.out.println(
		    "aceQLConnection.getClientVersion(): " + ((AceQLConnection) connection).getClientVersion());
	}

	System.out.println("aceQLConnection.getAutoCommit() : " + connection.getAutoCommit());
	System.out.println("aceQLConnection.isReadOnly()    : " + connection.isReadOnly());
	System.out.println("aceQLConnection.getHoldability(): " + connection.getHoldability());
	System.out.println("aceQLConnection.getTransactionIsolation() : " + connection.getTransactionIsolation());

	System.out.println();

	SqlUpdateTest sqlUpdateTest = new SqlUpdateTest(connection, System.out);

	/** 
	sqlUpdateTest.updateCustomerAllStatement();
	bigSelect(connection, 0);
	System.out.println();

	sqlUpdateTest.updateCustomerAllPreparedStatement();
	bigSelect(connection, 0);
	System.out.println();
	
	*/

	sqlUpdateTest.updateCustomerAllExecuteRaw();
	System.out.println();
	bigSelect(connection, 0);
	System.out.println();

	connection.close();
	System.out.println(new Date() + " End!");

    }

    /**
     * @param connection
     * @param records
     * @throws SQLException
     */
    public static void bigSelect(Connection connection, int records) throws SQLException {
	String sql;
	System.out.println(new Date() + " Begin display...");
	sql = "select * from customer where customer_id >= ? order by customer_id";
	PreparedStatement preparedStatement = connection.prepareStatement(sql);

	preparedStatement.setInt(1, 1);
	ResultSet rs = preparedStatement.executeQuery();

	int cpt = 0;
	while (rs.next()) {
	    cpt++;

	    if ((cpt % 10000) == 0 || cpt >= records - 1) {
		System.out.println(new Date());
		System.out.println("customer_id   : " + rs.getInt("customer_id"));
		System.out.println("customer_title: " + rs.getString("customer_title"));
		System.out.println("fname         : " + rs.getString("fname"));
	    }
	}

	rs.close();
	preparedStatement.close();
    }

}