Java Hibernate - Store Object to Database

This example shows you how to store or save Hibernate object to database. The basic steps in creating application in Hibernate will be:
– Creates the POJO
– Create the Hibernate mapping file
– Register the mapping file in the Hibernate configuration
– Create a simple manager class to store the object

The Label.hbm.xml should be registered in the Hibernate configuration file hibernate.cfg.xml

Label.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
    <class name="org.javac.example.hibernate.app.Label" table="LABELS">
        <id name="id" column="id">
            <generator/>
        </id>
        <property name="name" not-null="true"/>
        <property name="modifiedBy" column="modified_by" length="50"/>
        <property name="modifiedDate" column="modified_date" type="timestamp"/>
    </class>
</hibernate-mapping>

<?xml version="1.0"?>

<!DOCTYPE hibernate-mapping PUBLIC

"-//Hibernate/Hibernate Mapping DTD 3.0//EN"

"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>

</id>

</class>

</hibernate-mapping>

Label.java

package org.javac.example.hibernate.app;

import java.util.Date;

public class Label {
    private Long id;
    private String name;
    private String modifiedBy;
    private Date modifiedDate;

    public Label() {}

    private void setId(Long id) {
        this.id = id;
    }

    public Long getId() {
        return id;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void setModifiedBy(String modifiedBy) {
        this.modifiedBy = modifiedBy;
    }

    public String getModifiedBy() {
        return modifiedBy;
    }

    public void setModifiedDate(Date modifiedDate) {
        this.modifiedDate = modifiedDate;
    }

    public Date getModifiedDate() {
        return modifiedDate;
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder("[");
        sb.append("id = " + id + "; ");
        sb.append("name = " + name + ";]");
        return sb.toString();
    }
}

package org.javac.example.hibernate.app;

import java.util.Date;

public class Label {

private Long id;

private String name;

private String modifiedBy;

private Date modifiedDate;

public Label() {}

private void setId(Long id) {

this.id = id;

}

public Long getId() {

return id;

}

public void setName(String name) {

this.name = name;

}

public String getName() {

return name;

}

public void setModifiedBy(String modifiedBy) {

this.modifiedBy = modifiedBy;

}

public String getModifiedBy() {

return modifiedBy;

}

public void setModifiedDate(Date modifiedDate) {

this.modifiedDate = modifiedDate;

}

public Date getModifiedDate() {

return modifiedDate;

}

@Override

public String toString() {

StringBuilder sb = new StringBuilder("[");

sb.append("id = " + id + "; ");

sb.append("name = " + name + ";]");

return sb.toString();

}

LabelManager.java

package org.javac.example.hibernate.app;

import java.util.Date;

import org.hibernate.Session;

public class LabelManager {
    private void saveLabel(Label label) {

        Session session = SessionFactoryHelper.getSessionFactory().getCurrentSession();

        session.beginTransaction();
        session.save(label);
        session.getTransaction().commit();
    }

    public static void main(String[] args) {
        LabelManager manager = new LabelManager();

        /*
         * Creates a Label object we are going to stored in the database. We
         * set the name, modified by and modified date information.
         */
        Label label = new Label();
        label.setName("Sony Music");
        label.setModifiedBy("admin");
        label.setModifiedDate(new Date());

        // Call the LabelManager saveLabel method.
        manager.saveLabel(label);
    }
}

package org.javac.example.hibernate.app;

import java.util.Date;

import org.hibernate.Session;

public class LabelManager {

private void saveLabel(Label label) {

Session session = SessionFactoryHelper.getSessionFactory().getCurrentSession();

session.beginTransaction();

session.save(label);

session.getTransaction().commit();

}

public static void main(String[] args) {

LabelManager manager = new LabelManager();

* Creates a Label object we are going to stored in the database. We

* set the name, modified by and modified date information.

Label label = new Label();

label.setName("Sony Music");

label.setModifiedBy("admin");

label.setModifiedDate(new Date());

// Call the LabelManager saveLabel method.

manager.saveLabel(label);

}

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