com.github.woozoo73.test.JdbcProfilingTest.java Source code

Introduction

Here is the source code for com.github.woozoo73.test.JdbcProfilingTest.java

Source

/*
 * Copyright 2013 the original author or authors.
 *
 * 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.github.woozoo73.test;

import static org.hamcrest.CoreMatchers.*;
import static org.junit.Assert.*;

import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hsqldb.Server;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class JdbcProfilingTest {

    protected final Log logger = LogFactory.getLog(getClass());

    private Server server;

    @Before
    public void setUp() throws Exception {
        startHsqldb();

        try {
            executeUpdate("CREATE TABLE USER ( ID VARCHAR(36) NOT NULL, NAME VARCHAR(100) NOT NULL )", null);
        } catch (Exception e) {
        }
    }

    @After
    public void tearDown() throws Exception {
        shutdownHsqldb();
    }

    protected void startHsqldb() {
        server = new Server();
        server.setLogWriter(new PrintWriter(System.out));
        server.setErrWriter(new PrintWriter(System.out));
        server.start();
    }

    protected void shutdownHsqldb() {
        try {
            server.shutdown();
        } catch (Exception t) {
            logger.warn(t.getMessage(), t);
        }
    }

    @Test
    public void testConnection() throws Exception {
        Connection con = getConnection();

        assertThat(con, notNullValue());
    }

    @Test
    public void testUpdateSql() {
        String id = "woo";
        executeUpdate("INSERT INTO USER ( ID, NAME ) VALUES ( '" + id + "', 'woo' )", null);
    }

    @Test
    public void testUpdateSqlWithParameter() {
        String id = "woo";
        executeUpdate("INSERT INTO USER ( ID, NAME ) VALUES ( ?, ? )", new Object[] { id, id });
    }

    @Test
    public void testSelectSqlWithParameter() {
        executeQuery("SELECT * FROM USER WHERE ID = ?", new Object[] { "woo" });
    }

    private int executeUpdate(String sql, Object[] args) {
        int result = 0;
        Connection con = null;
        PreparedStatement ps = null;

        try {
            con = getConnection();
            ps = con.prepareStatement(sql);
            if (args != null) {
                for (int i = 0; i < args.length; i++) {
                    ps.setObject(i + 1, args[i]);
                }
            }

            result = ps.executeUpdate();
        } catch (Exception e) {
            throw new RuntimeException(e);
        } finally {
            if (ps != null) {
                try {
                    ps.close();
                } catch (SQLException e) {
                }
            }
            if (con != null) {
                try {
                    con.close();
                } catch (SQLException e) {
                }
            }
        }

        return result;
    }

    private ResultSet executeQuery(String sql, Object[] args) {
        ResultSet rs = null;
        Connection con = null;
        PreparedStatement ps = null;

        try {
            con = getConnection();
            ps = con.prepareStatement(sql);
            if (args != null) {
                for (int i = 0; i < args.length; i++) {
                    ps.setObject(i + 1, args[i]);
                }
            }

            rs = ps.executeQuery();
        } catch (Exception e) {
            throw new RuntimeException(e);
        } finally {
            if (ps != null) {
                try {
                    ps.close();
                } catch (SQLException e) {
                }
            }
            if (con != null) {
                try {
                    con.close();
                } catch (SQLException e) {
                }
            }
        }

        return rs;
    }

    private Connection getConnection() throws Exception {
        Connection con = DriverManager.getConnection("jdbc:hsqldb:mem:testdb", "SA", "");

        return con;
    }

}