Native SQL createSQLquery Basic Operation in hibernate

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
   <!-- <session-factory> <property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property> 
		hibernate word is optional <property name="connection.url">jdbc:oracle:thin:@localhost:1521:ORCL</property> 
		<property name="hibernate.connection.username">kcv</property> <property name="hibernate.connection.password">kcv</property> 
		<property name="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</property> 
		<property name="show_sql">true</property> <mapping resource="Employee.hbm.xml"/> 
		</session-factory> -->
   <session-factory>
      <property name="hibernate.current_session_context_class">thread</property>
      <property name="hbm2ddl.auto">create</property>
      <property name="dialect">org.hibernate.dialect.PostgreSQLDialect</property>
      <property name="connection.url">jdbc:postgresql://localhost:5432/hibernate</property>
      <property name="connection.username">postgres</property>
      <property name="connection.password">password</property>
      <property name="connection.driver_class">org.postgresql.Driver</property>
      <property name="show_sql">true</property>
      <property name="format_sql">true</property>
      <property name="use_sql_comments">true</property>
      		<mapping resource="EmployeeBean.hbm.xml" />
   </session-factory>
</hibernate-configuration>



 
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
	<class name="com.cv.hibernate.nativesql.model.EmployeeBean"
		table="EmployeeBean_Native_SQL">
		<id name="id" type="long">
			<column name="EID" precision="10" scale="0" />
		</id>
		<property name="firstName" type="string">
			<column name="FIRSTNAME" length="29" />
		</property>
		<property name="lastName" type="string">
			<column name="LASTNAME" length="29" />
		</property>
		<property name="email" type="string">
			<column name="EMAIL" length="39" />
		</property>
	</class>

</hibernate-mapping>


 

    
package com.cv.hibernate.nativesql.model;



/**

 * @author Chandra Vardhan

 */

public class EmployeeBean {

  private long id;

  private String firstName;

  private String lastName;

  private String email;



  public long getId() {

    return id;

  }



  public void setId(long id) {

    this.id = id;

  }



  public String getFirstName() {

    return firstName;

  }



  public void setFirstName(String firstName) {

    this.firstName = firstName;

  }



  public String getLastName() {

    return lastName;

  }



  public void setLastName(String lastName) {

    this.lastName = lastName;

  }



  public String getEmail() {

    return email;

  }



  public void setEmail(String email) {

    this.email = email;

  }



}


 

    
package com.cv.hibernate.nativesql;



import java.util.Iterator;



import org.apache.log4j.Logger;

import org.hibernate.SQLQuery;

import org.hibernate.Session;

import org.hibernate.type.FloatType;

import org.hibernate.type.IntegerType;

import org.hibernate.type.LongType;

import org.hibernate.type.ShortType;



import com.cv.hibernate.nativesql.util.HibernateUtil;



/**

 * @author Chandra Vardhan

 */

public class NativeSQLIterateNotSupport {

  private final static Logger logger = Logger

      .getLogger(NativeSQLIterateNotSupport.class);



  public static void main(String args[]) {

    // Am creating the records by this statement.

    HibernateUtil.saveOrUpdate();

    Session session = HibernateUtil.getSession();

    try {

      SQLQuery q1 = session

          .createSQLQuery("select count(*) as cnt,max(eid) as max,min(eid) as min,avg(eid) as avg from EmployeeBean_Native_SQL where eid>=:p1 and eid<=:p2");



      q1.setInteger("p1", 101);

      q1.setInteger("p2", 110);



      q1.addScalar("cnt", IntegerType.INSTANCE);

      q1.addScalar("max", LongType.INSTANCE);

      q1.addScalar("min", ShortType.INSTANCE);

      q1.addScalar("avg", FloatType.INSTANCE);

      // Exception in thread "main"

      // java.lang.UnsupportedOperationException:

      // SQL queries do not currently support iteration

      // This operation is not supported by hibernate native SQL

      Iterator itr = q1.iterate();

      while (itr.hasNext()) {

        Object element = itr.next();

        System.out.print(element + " ");

      }

    } catch (UnsupportedOperationException uoe) {

      logger.info("-------------------------------ERROR-------------------------------");

      System.err

          .println("Hibernate Native SQL queries do not currently support iteration");

    } catch (Exception e) {

      System.err.println(e);

    }



    HibernateUtil.closeSession();

  }

}


 

    
package com.cv.hibernate.nativesql;



import org.apache.log4j.Logger;

import org.hibernate.SQLQuery;

import org.hibernate.Session;



import com.cv.hibernate.nativesql.util.HibernateUtil;



public class NativeSQLQueryInsert {



  /**

   * @param args

   */

  private final static Logger logger = Logger.getLogger(NativeSQLQueryInsert.class);



  public static void main(String[] args) {



    Session session = HibernateUtil.getSession();



    SQLQuery query = session.createSQLQuery("insert into EmployeeBean_Native_SQL values(?,?,?,?)");

    int count = 0;

    for (int i = 110; i < 120; i++) {

      query.setInteger(0, i);

      query.setString(1, "chote");

      query.setString(2, "kodam");

      query.setString(3, "meetkodam@gmail.com");



      int res = query.executeUpdate();

      if (res > 0) {

        ++count;

      }

    }



    logger.info("No of records inserted" + count);

    HibernateUtil.closeSession();

  }



}


 

    
package com.cv.hibernate.nativesql;



import java.util.List;



import org.apache.log4j.Logger;

import org.hibernate.SQLQuery;

import org.hibernate.Session;

import org.hibernate.type.IntegerType;

import org.hibernate.type.StringType;



import com.cv.hibernate.nativesql.util.HibernateUtil;



/**

 * @author Chandra Vardhan

 */

public class NativeSQLSelectByIdANDEmail {



  /**

   * @param args

   */

  private final static Logger logger = Logger

      .getLogger(NativeSQLSelectByIdANDEmail.class);



  public static void main(String[] args) {



    // Am creating the records by this statement.

    HibernateUtil.saveOrUpdate();

    Session session = HibernateUtil.getSession();



    SQLQuery q1 = session

        .createSQLQuery("select eid,firstname,email from EmployeeBean_Native_SQL where eid=? and email like ?");



    q1.setInteger(0, 102);

    q1.setString(1, "%gmail.com");



    // To ensure the type safety

    q1.addScalar("eid", IntegerType.INSTANCE);

    q1.addScalar("firstname", StringType.INSTANCE);

    q1.addScalar("email", StringType.INSTANCE);



    List list = q1.list();

    if (list != null && !list.isEmpty()) {

      logger.info("Return type of the class is : "

          + list.get(0).getClass());

      for (int i = 0; i < list.size(); ++i) {

        Object[] row = (Object[]) list.get(i);



        String result = null;

        for (int k = 0; k < row.length; k++) {

          if (result == null) {

            result = row[k].toString() + " ";

          } else {

            result += row[k].toString() + " ";

          }

        }

        logger.info(result);

      }

    } else {

      logger.info("No Records found for the specified input...");

    }

    HibernateUtil.closeSession();

  }



}


 

    
package com.cv.hibernate.nativesql;



import java.util.List;



import org.apache.log4j.Logger;

import org.hibernate.SQLQuery;

import org.hibernate.Session;

import org.hibernate.type.IntegerType;



import com.cv.hibernate.nativesql.util.HibernateUtil;



/**

 * @author Chandra Vardhan

 */

public class NativeSQLSelectCount {

  private final static Logger logger = Logger

      .getLogger(NativeSQLSelectCount.class);



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



    // Am creating the records by this statement.

    HibernateUtil.saveOrUpdate();

    Session session = HibernateUtil.getSession();



    SQLQuery q1 = session

        .createSQLQuery("select count(*) as cnt from EmployeeBean_Native_SQL where eid>=:p1 and eid<=:p2");



    q1.setInteger("p1", 103);

    q1.setInteger("p2", 110);



    q1.addScalar("cnt", IntegerType.INSTANCE);



    List list = q1.list();



    if (list != null && !list.isEmpty()) {

      logger.info("Return type of the class is : "

          + list.get(0).getClass());

      int cnt = ((Integer) list.get(0)).intValue();

      logger.info("count of records : " + cnt);

    } else {

      logger.info("No Records found for the specified input...");

    }

    HibernateUtil.closeSession();

  }

}


 

    
package com.cv.hibernate.nativesql;



import java.util.List;



import org.apache.log4j.Logger;

import org.hibernate.SQLQuery;

import org.hibernate.Session;

import org.hibernate.type.FloatType;

import org.hibernate.type.IntegerType;

import org.hibernate.type.LongType;

import org.hibernate.type.ShortType;



import com.cv.hibernate.nativesql.util.HibernateUtil;



/**

 * @author Chandra Vardhan

 */

public class NativeSQLSelectCountMaxMinFind {



  /**

   * @param args

   */

  private final static Logger logger = Logger

      .getLogger(NativeSQLSelectCountMaxMinFind.class);



  public static void main(String[] args) {

    // Am creating the records by this statement.

    HibernateUtil.saveOrUpdate();

    Session session = HibernateUtil.getSession();



    SQLQuery q1 = session

        .createSQLQuery("select count(*) as cnt,max(eid) as max,min(eid) as min,avg(eid) as avg from EmployeeBean_Native_SQL where eid>=:p1 and eid<=:p2");



    q1.setInteger("p1", 100);

    q1.setInteger("p2", 110);



    q1.addScalar("cnt", IntegerType.INSTANCE);

    q1.addScalar("max", LongType.INSTANCE);

    q1.addScalar("min", ShortType.INSTANCE);

    q1.addScalar("avg", FloatType.INSTANCE);



    // Iterator it=q1.iterate(); //Not supported by SQL...



    List list = q1.list();

    if (list != null && !list.isEmpty()) {

      logger.info("return type of the class : " + list.get(0).getClass());

      Object[] obj = (Object[]) list.get(0);



      int cnt = ((Integer) obj[0]).intValue();

      long max = ((Long) obj[1]).longValue();

      short min = ((Short) obj[2]).shortValue();

      float avg = ((Float) obj[3]).floatValue();



      logger.info("cnt of records :" + cnt);

      logger.info("max of records :" + max);

      logger.info("min of records :" + min);

      logger.info("avg of records :" + avg);

    } else {

      logger.info("No Records found for the specified input...");

    }

    // This way is without adding the scalar



    List list2 = q1.list();

    if (list2 != null && !list2.isEmpty()) {

      logger.info("Return type of the class is : "

          + list2.get(0).getClass());



      for (int i = 0; i < list2.size(); ++i) {

        Object[] row = (Object[]) list2.get(i);



        String result = null;

        for (int k = 0; k < row.length; k++) {

          if (result == null) {

            result = row[k].toString() + " ";

          } else {

            result += row[k].toString() + " ";

          }

        }

        logger.info(result);

      }

    } else {

      logger.info("No Records found for the specified input...");

    }

    

    HibernateUtil.closeSession();

  }



}


 

    
package com.cv.hibernate.nativesql;



import java.util.List;



import org.apache.log4j.Logger;

import org.hibernate.SQLQuery;

import org.hibernate.Session;



import com.cv.hibernate.nativesql.model.EmployeeBean;

import com.cv.hibernate.nativesql.util.HibernateUtil;



/**

 * @author Chandra Vardhan

 */

public class NativeSQLSelectQuery {

  private final static Logger logger = Logger

      .getLogger(NativeSQLSelectQuery.class);



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

    // Am creating the records by this statement.

    HibernateUtil.saveOrUpdate();

    Session session = HibernateUtil.getSession();

    SQLQuery query = session

        .createSQLQuery("select * from EmployeeBean_Native_SQL");

    query.addEntity(EmployeeBean.class);

    List<EmployeeBean> list = query.list();

    if (list != null && !list.isEmpty()) {

      logger.info("return type of the class : " + list.get(0).getClass());

      for (int i = 0; i < list.size(); ++i) {

        EmployeeBean eb = list.get(i);

        logger.info(eb.getId() + " " + eb.getFirstName() + " "

            + eb.getLastName() + " " + eb.getEmail());



      }

    } else {

      logger.info("No Records found for the specified input...");

    }



    HibernateUtil.closeSession();

  }

}


 

    
package com.cv.hibernate.nativesql.util;



import org.apache.log4j.Logger;

import org.hibernate.HibernateException;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.hibernate.boot.registry.StandardServiceRegistryBuilder;

import org.hibernate.cfg.Configuration;



import com.cv.hibernate.nativesql.model.EmployeeBean;



/**

 * @author Chandra Vardhan

 */

/**

 * Configures and provides access to Hibernate sessions, tied to the current

 * thread of execution. Follows the Thread Local Session pattern, see

 * {@link http://hibernate.org/42.html }.

 */

public class HibernateUtil {

  private final static Logger logger = Logger.getLogger(HibernateUtil.class);



  /**

   * Location of hibernate.cfg.xml file. Location should be on the classpath

   * as Hibernate uses #resourceAsStream style lookup for its configuration

   * file. The default classpath location of the hibernate config file is in

   * the default package. Use #setConfigFile() to update the location of the

   * configuration file for the current session.

   */

  private static String CONFIG_FILE_LOCATION = "hibernate.cfg.xml";

  private static final ThreadLocal<Session> threadLocal = new ThreadLocal<Session>();

  private static Configuration configuration = new Configuration();

  private static SessionFactory sessionFactory;



  static {

    try {

      configuration = configuration.configure(CONFIG_FILE_LOCATION);

      StandardServiceRegistryBuilder builder = new StandardServiceRegistryBuilder()

          .applySettings(configuration.getProperties());

      sessionFactory = configuration.buildSessionFactory(builder.build());

      logger.info("%%%% Connection successful %%%%");

    } catch (Exception e) {

      logger.error("%%%% Error Creating SessionFactory %%%%");

      e.printStackTrace();

    }

  }



  private HibernateUtil() {

  }



  /**

   * Returns the ThreadLocal Session instance. Lazy initialize the

   * <code>SessionFactory</code> if needed.

   * 

   * @return Session

   * @throws HibernateException

   */

  public static Session getSession() throws HibernateException {

    Session session = (Session) threadLocal.get();



    if (session == null || !session.isOpen()) {

      if (sessionFactory == null) {

        rebuildSessionFactory();

      }

      session = (sessionFactory != null) ? sessionFactory.openSession()

          : null;

      threadLocal.set(session);

    }



    return session;

  }



  /**

   * Rebuild hibernate session factory

   * 

   */

  public static void rebuildSessionFactory() {

    try {

      configuration = configuration.configure(CONFIG_FILE_LOCATION);

      StandardServiceRegistryBuilder builder = new StandardServiceRegistryBuilder()

          .applySettings(configuration.getProperties());

      sessionFactory = configuration.buildSessionFactory(builder.build());

      logger.info("%%%% Connection successful %%%%");

    } catch (Exception e) {

      logger.error("%%%% Error Creating SessionFactory %%%%");

      e.printStackTrace();

    }

  }



  /**

   * Close the single hibernate session instance.

   * 

   * @throws HibernateException

   */

  public static void closeSession() throws HibernateException {

    Session session = (Session) threadLocal.get();

    threadLocal.set(null);



    if (session != null) {

      session.close();

      System.exit(0);

    }

  }



  /**

   * return session factory

   * 

   */

  public static SessionFactory getSessionFactory() {

    return sessionFactory;

  }



  /**

   * return hibernate configuration

   * 

   */

  public static Configuration getConfiguration() {

    return configuration;

  }



  public static void saveOrUpdate() {

    Session session = getSession();

    for (int i = 100; i <= 105; i++) {

      EmployeeBean eb = new EmployeeBean();

      eb.setId(new Long(i));

      eb.setFirstName("chandra");

      eb.setLastName("vardhan");

      eb.setEmail("meetkodam@gmail.com");

      session.beginTransaction();

      session.saveOrUpdate(eb);

      session.getTransaction().commit();

    }

    logger.info("Saved successful...");

    session.close();

  }

}







#By default enabling Console appender
# Root logger option
log4j.rootLogger=INFO, stdout

# Redirect log messages to console
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%-5p [%c]:%L -->> %m%n

# Redirect log messages to a log file
#log4j.appender.file=org.apache.log4j.RollingFileAppender
#log4j.appender.file.File=C:\\servlet-application.log
#log4j.appender.file.MaxFileSize=5MB
#log4j.appender.file.MaxBackupIndex=10
#log4j.appender.file.layout=org.apache.log4j.PatternLayout
#log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n 


	
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.cv.natvesql</groupId>
	<artifactId>NativeSQL</artifactId>
	<version>1.0</version>

	<dependencies>
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-entitymanager</artifactId>
			<version>4.3.5.Final</version>
		</dependency>
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-c3p0</artifactId>
			<version>4.3.5.Final</version>
		</dependency>

		<dependency>
			<artifactId>hibernate-core</artifactId>
			<groupId>org.hibernate</groupId>
			<version>4.3.5.Final</version>
		</dependency>

		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-validator</artifactId>
			<version>4.2.0.Final</version>
		</dependency>
		<dependency>
			<groupId>org.hibernate.common</groupId>
			<artifactId>hibernate-commons-annotations</artifactId>
			<version>4.0.4.Final</version>
		</dependency>
		<dependency>
			<groupId>org.hibernate.javax.persistence</groupId>
			<artifactId>hibernate-jpa-2.0-api</artifactId>
			<version>1.0.1.Final</version>
		</dependency>

		<dependency>
			<groupId>javax.validation</groupId>
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			<version>1.0.0.GA</version>
			provided
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		<dependency>
			<groupId>org.slf4j</groupId>
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		<dependency>
			<groupId>org.jboss.logging</groupId>
			<artifactId>jboss-logging</artifactId>
			<version>3.1.0.CR2</version>
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		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
			<version>1.6.4</version>
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		<dependency>
			<groupId>postgresql</groupId>
			<artifactId>postgresql</artifactId>
			<version>9.1-901.jdbc4</version>
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			<groupId>org.slf4j</groupId>
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	</dependencies>
	<build>

		<plugins>
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				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.3</version>
				<configuration>
					<source>1.8</source>
					<target>1.8</target>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>




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