BAEL-1348 | BatchProcessing example using jdbc (#3216)
* BAEL-EVAL | Adding an example to demo Bean Injection ### Changes done A Spring boot app to demo bean injection * Adding @Autowired for Constructor Injection * BAEL-EVAL | Correcting the method name * BAEL-EVAL * BAEL-1348 | Adding example of Batch Processing in JDBC ### Changes done - Added one example using statement - Added one example using preparedstatement * Removing evaluation article * BAEL-1348 | Adding example of Batch Processing in JDBC ### Changes done - Added an example using statement - Added an example using preparedstatement * BAEL-1348 | BatchProcessing example using jdbc ### Changes done - Add example using statement - Add example using PreparedStatement - Add Unit Tests * BAEL-1348 | Changes to pom.xml and refactoring UnitTest * BAEL-1348 | Removing the example using spring-boot
This commit is contained in:
Binesh Narayanan
Grzegorz Piwowarek
parent
617c2ffdba
commit
94ace2eda8
@ -180,12 +180,7 @@
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<artifactId>esapi</artifactId>
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<version>2.1.0.1</version>
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</dependency>
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<dependency>
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<groupId>com.h2database</groupId>
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<artifactId>h2</artifactId>
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<version>1.4.196</version>
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<scope>runtime</scope>
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</dependency>
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<dependency>
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<groupId>com.sun.messaging.mq</groupId>
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<artifactId>fscontext</artifactId>
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@ -221,13 +216,17 @@
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<artifactId>spring-web</artifactId>
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<version>4.3.4.RELEASE</version>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter</artifactId>
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<version>1.5.8.RELEASE</version>
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</dependency>
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<dependency>
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<groupId>org.hsqldb</groupId>
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<artifactId>hsqldb</artifactId>
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<version>2.4.0</version>
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<scope>runtime</scope>
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</dependency>
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</dependencies>
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<build>
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@ -261,7 +260,7 @@
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<exclude>**/*LongRunningUnitTest.java</exclude>
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<exclude>**/*ManualTest.java</exclude>
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</excludes>
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<testFailureIgnore>true</testFailureIgnore>
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</configuration>
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</plugin>
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@ -385,7 +384,7 @@
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<argument>-Xmx300m</argument>
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<argument>-XX:+UseParallelGC</argument>
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<argument>-classpath</argument>
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<classpath />
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<classpath/>
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<argument>com.baeldung.outofmemoryerror.OutOfMemoryGCLimitExceed</argument>
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</arguments>
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</configuration>
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@ -433,7 +432,7 @@
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<executions>
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<execution>
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<id>run-benchmarks</id>
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<!-- <phase>integration-test</phase> -->
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<!-- <phase>integration-test</phase>-->
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<phase>none</phase>
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<goals>
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<goal>exec</goal>
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@ -443,7 +442,7 @@
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<executable>java</executable>
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<arguments>
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<argument>-classpath</argument>
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<classpath />
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<classpath/>
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<argument>org.openjdk.jmh.Main</argument>
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<argument>.*</argument>
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</arguments>
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@ -0,0 +1,96 @@
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package com.baeldung.jdbc;
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import java.sql.*;
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import java.util.UUID;
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public class BatchProcessing {
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private final String[] EMPLOYEES = new String[]{"Zuck","Mike","Larry","Musk","Steve"};
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private final String[] DESIGNATIONS = new String[]{"CFO","CSO","CTO","CEO","CMO"};
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private final String[] ADDRESSES = new String[]{"China","York","Diego","Carolina","India"};
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private Connection connection;
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public void getConnection(){
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try {
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Class.forName("org.hsqldb.jdbcDriver");
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connection = DriverManager.getConnection("jdbc:hsqldb:file:C:\\EMPLOYEEDB", "SA", "");
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connection.setAutoCommit(false);
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} catch (Exception e) {
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e.printStackTrace(System.out);
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}
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}
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public void createTables(){
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try {
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connection.createStatement().executeUpdate("create table EMPLOYEE (ID VARCHAR(36), NAME VARCHAR(45), DESIGNATION VARCHAR(15))");
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connection.createStatement().executeUpdate("create table EMP_ADDRESS (ID VARCHAR(36), EMP_ID VARCHAR(36), ADDRESS VARCHAR(45))");
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System.out.println("Tables Created!!!");
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} catch (SQLException e) {
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e.printStackTrace(System.out);
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}
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}
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public void useStatement(){
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try {
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String insertEmployeeSQL = "INSERT INTO EMPLOYEE(ID, NAME, DESIGNATION) VALUES ('%s','%s','%s');";
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String insertEmployeeAddrSQL = "INSERT INTO EMP_ADDRESS(ID, EMP_ID, ADDRESS) VALUES ('%s','%s','%s');";
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Statement statement = connection.createStatement();
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for(int i = 0; i < EMPLOYEES.length; i++){
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String employeeId = UUID.randomUUID().toString();
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statement.addBatch(String.format(insertEmployeeSQL, employeeId, EMPLOYEES[i],DESIGNATIONS[i]));
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statement.addBatch(String.format(insertEmployeeAddrSQL, UUID.randomUUID().toString(),employeeId,ADDRESSES[i]));
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}
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statement.executeBatch();
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connection.commit();
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} catch (Exception e) {
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try {
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connection.rollback();
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} catch (SQLException ex) {
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System.out.println("Error during rollback");
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System.out.println(ex.getMessage());
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}
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e.printStackTrace(System.out);
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}
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}
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public void usePreparedStatement(){
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try {
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String insertEmployeeSQL = "INSERT INTO EMPLOYEE(ID, NAME, DESIGNATION) VALUES (?,?,?);";
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String insertEmployeeAddrSQL = "INSERT INTO EMP_ADDRESS(ID, EMP_ID, ADDRESS) VALUES (?,?,?);";
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PreparedStatement employeeStmt = connection.prepareStatement(insertEmployeeSQL);
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PreparedStatement empAddressStmt = connection.prepareStatement(insertEmployeeAddrSQL);
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for(int i = 0; i < EMPLOYEES.length; i++){
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String employeeId = UUID.randomUUID().toString();
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employeeStmt.setString(1,employeeId);
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employeeStmt.setString(2,EMPLOYEES[i]);
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employeeStmt.setString(3,DESIGNATIONS[i]);
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employeeStmt.addBatch();
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empAddressStmt.setString(1,UUID.randomUUID().toString());
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empAddressStmt.setString(2,employeeId);
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empAddressStmt.setString(3,ADDRESSES[i]);
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empAddressStmt.addBatch();
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}
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employeeStmt.executeBatch();
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empAddressStmt.executeBatch();
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connection.commit();
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} catch (Exception e) {
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try {
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connection.rollback();
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} catch (SQLException ex) {
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System.out.println("Error during rollback");
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System.out.println(ex.getMessage());
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}
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e.printStackTrace(System.out);
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}
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}
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public static void main(String[] args) {
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BatchProcessing batchProcessing = new BatchProcessing();
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batchProcessing.getConnection();
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batchProcessing.createTables();
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batchProcessing.useStatement();
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batchProcessing.usePreparedStatement();
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}
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}
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@ -0,0 +1,71 @@
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package com.baeldung.jdbc;
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import org.junit.Before;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.mockito.InjectMocks;
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import org.mockito.Mock;
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import org.mockito.Mockito;
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import org.mockito.MockitoAnnotations;
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import org.mockito.junit.MockitoJUnitRunner;
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import java.sql.Connection;
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import java.sql.PreparedStatement;
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import java.sql.Statement;
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@RunWith(MockitoJUnitRunner.class)
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public class BatchProcessingTest {
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@InjectMocks
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private BatchProcessing target = new BatchProcessing();
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@Mock
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private Connection connection;
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@Mock
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private Statement statement;
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@Mock
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private PreparedStatement employeeStatement;
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@Mock
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private PreparedStatement employeeAddressStatement;
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@Before
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public void before(){
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MockitoAnnotations.initMocks(this);
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}
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@Test
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public void when_useStatement_thenInsertData_success() throws Exception {
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Mockito.when(connection.createStatement()).thenReturn(statement);
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target.useStatement();
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}
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@Test
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public void when_useStatement_ifThrowException_thenCatchException() throws Exception {
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Mockito.when(connection.createStatement()).thenThrow(new RuntimeException());
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target.useStatement();
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}
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@Test
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public void when_usePreparedStatement_thenInsertData_success() throws Exception {
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String insertEmployeeSQL = "INSERT INTO EMPLOYEE(ID, NAME, DESIGNATION) VALUES (?,?,?);";
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String insertEmployeeAddrSQL = "INSERT INTO EMP_ADDRESS(ID, EMP_ID, ADDRESS) VALUES (?,?,?);";
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Mockito.when(connection.prepareStatement(insertEmployeeSQL)).thenReturn(employeeStatement);
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Mockito.when(connection.prepareStatement(insertEmployeeAddrSQL)).thenReturn(employeeAddressStatement);
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target.usePreparedStatement();
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}
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@Test
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public void when_usePreparedStatement_ifThrowException_thenCatchException() throws Exception {
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String insertEmployeeSQL = "INSERT INTO EMPLOYEE(ID, NAME, DESIGNATION) VALUES (?,?,?);";
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String insertEmployeeAddrSQL = "INSERT INTO EMP_ADDRESS(ID, EMP_ID, ADDRESS) VALUES (?,?,?);";
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Mockito.when(connection.prepareStatement(insertEmployeeSQL)).thenReturn(employeeStatement);
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Mockito.when(connection.prepareStatement(insertEmployeeAddrSQL)).thenThrow(new RuntimeException());
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target.usePreparedStatement();
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}
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}
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