BAEL-3387 Hibernate - Different Levels Of Logging (#8326)

* Added module for article

* Update pom.xml

* Delete pom.xml

* Update and rename ForecastProcessorTest.java to ForecastProcessorUnitTest.java

* Updated code as per review comments

* Delete .gitignore

* Update pom.xml

* BAEL-2904 Moved files

* BAEL-2904 Deleted files from previous project

* BAEL-2904 Moved classes for method reference article

* Update pom.xml

* BAEL-2904 Updated README.md

* First draft

* BAEL-3300 Added more tests

* BAEL-3300 Removed unused imports

* BAEL-3300 Run dos2unix on README.md

* BAEL-3387 Added entity and test classes

* BAEL-3387 Added logging configuration

* BAEL-3387 Corrected log4j and log4j2 config

persistence-modules/hibernate5-2/pom.xml

@@ -27,6 +27,12 @@
             <artifactId>h2</artifactId>
             <version>1.4.200</version>
         </dependency>
+
+        <dependency>
+        	<groupId>org.apache.commons</groupId>
+        	<artifactId>commons-lang3</artifactId>
+        	<version>3.8.1</version>
+        </dependency>
     </dependencies>
 
     <properties>

persistence-modules/hibernate5-2/src/main/java/com/baeldung/hibernate/logging/Employee.java

@@ -0,0 +1,59 @@
+package com.baeldung.hibernate.logging;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+@Entity
+public class Employee {
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE)
+    private long id;
+
+    private String employeeNumber;
+
+    private String title;
+
+    private String name;
+
+    public Employee() {
+    }
+    
+    public Employee(String name, String employeeNumber) {
+        this.name = name;
+        this.employeeNumber = employeeNumber;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getEmployeeNumber() {
+        return employeeNumber;
+    }
+
+    public void setEmployeeNumber(String employeeNumber) {
+        this.employeeNumber = employeeNumber;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+}

persistence-modules/hibernate5-2/src/main/resources/hibernate-logging.cfg.xml

@@ -0,0 +1,27 @@
+<?xml version='1.0' encoding='utf-8'?>
+<!DOCTYPE hibernate-configuration PUBLIC
+        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
+        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
+
+<hibernate-configuration>
+
+    <session-factory>
+        <property name="connection.driver_class">org.h2.Driver</property>
+        <property name="connection.url">jdbc:h2:mem:db1;DB_CLOSE_DELAY=-1</property>
+        <property name="connection.username">sa</property>
+        <property name="connection.password"/>
+
+        <property name="connection.pool_size">1</property>
+
+        <property name="dialect">org.hibernate.dialect.H2Dialect</property>
+
+        <property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>
+
+        <property name="hibernate.generate_statistics">true</property>
+
+        <property name="hbm2ddl.auto">create</property>
+
+		<mapping class="com.baeldung.hibernate.logging.Employee"/>
+    </session-factory>
+
+</hibernate-configuration>

persistence-modules/hibernate5-2/src/test/java/com/baeldung/hibernatelogging/HibernateLoggingIntegrationTest.java

@@ -0,0 +1,50 @@
+package com.baeldung.hibernatelogging;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.fail;
+
+import java.io.IOException;
+import java.util.List;
+
+import org.hibernate.Session;
+import org.hibernate.SessionFactory;
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.registry.StandardServiceRegistry;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.query.Query;
+import org.junit.Before;
+import org.junit.Test;
+
+import com.baeldung.hibernate.logging.Employee;
+
+public class HibernateLoggingIntegrationTest {
+
+    private SessionFactory sessionFactory;
+
+    @Before
+    public void setUp() throws IOException {
+        final StandardServiceRegistry registry = new StandardServiceRegistryBuilder().configure("hibernate-logging.cfg.xml")
+            .build();
+        try {
+            sessionFactory = new MetadataSources(registry).buildMetadata()
+                .buildSessionFactory();
+            Session session = sessionFactory.openSession();
+            session.beginTransaction();
+            session.save(new Employee("John Smith", "001"));
+            session.getTransaction()
+                .commit();
+            session.close();
+        } catch (Exception e) {
+            fail(e);
+            StandardServiceRegistryBuilder.destroy(registry);
+        }
+    }
+    
+    @Test
+    public void whenAllEmployeesAreSelected_ThenSuccess() {
+        Query<Employee> query = sessionFactory.openSession().createQuery("from com.baeldung.hibernate.logging.Employee", Employee.class);
+        List<Employee> deptEmployees = query.list();
+        Employee deptEmployee = deptEmployees.get(0);
+        assertEquals("John Smith", deptEmployee.getName());
+    }
+}

persistence-modules/hibernate5-2/src/test/resources/log4j.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE log4j:configuration PUBLIC "-//APACHE//DTD LOG4J 1.2//EN" "log4j.dtd">
+<log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'>
+  <appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
+    <layout class="org.apache.log4j.PatternLayout">
+      <param name="ConversionPattern" value="%d %-5p [%t] %C{2} (%F:%L) - %m%n"/>
+    </layout>
+  </appender>
+  <logger name="org.hibernate">
+    <level value="info" />
+  </logger>
+  <logger name="org.hibernate.SQL">
+    <level value="debug" />
+  </logger>
+  <logger name="org.hibernate.type.descriptor.sql">
+    <level value="trace" />
+  </logger>  
+  <logger name="org.hibernate.stat">
+    <level value="debug" />
+  </logger>
+  <root>
+    <priority value ="info" />
+    <appender-ref ref="STDOUT" />
+  </root>
+</log4j:configuration>

persistence-modules/hibernate5-2/src/test/resources/log4j2.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Configuration status="INFO">
+    <Appenders>
+        <Console name="console" target="SYSTEM_OUT">
+            <PatternLayout
+                pattern="[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n" />
+        </Console>
+    </Appenders>
+    <Loggers>
+        <Logger name="org.hibernate" level="info"/>
+    	<Logger name="org.hibernate.SQL" level="debug"/>
+    	<Logger name="org.hibernate.type.descriptor.sql" level="trace"/>
+    	<Logger name="org.hibernate.stat" level="debug" />
+        <Root level="info" additivity="false">
+            <AppenderRef ref="console" />
+        </Root>
+    </Loggers>
+</Configuration>

persistence-modules/hibernate5-2/src/test/resources/logback.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{yyyy-MM-dd HH:mm:ss} | %-5p | [%thread] %logger{5}:%L - %msg%n</pattern>
+        </encoder>
+    </appender>
+
+	<logger name="org.hibernate" level="INFO" />
+	<logger name="org.hibernate.SQL" level="DEBUG" />
+    <logger name="org.hibernate.type.descriptor.sql" level="TRACE" />
+	<logger name="org.hibernate.stat" level="DEBUG" />
+	
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>