ComtorDAO 1.0

ComtorDAO is a Data Access Object system for Java. This is most easy to use DAO. It's uses reflexion to map objects on tables.

ComtorDAO library implements insert, delete, update and find actions. You do not require xml configuration files, you don't need to write any insert , delete or update handly.

SAMPLE STEP BY STEP

STEP 0

Create table in your database.

create table person (
id varchar(20) primary key;
age int;
name varchar(100);
);

STEP 1

Create a class to be mapped on table.

Person.java

public class Person{
private String id ;
private int age;
private String name;

}

STEP 2

Converts the class in a java bean. You can use your IDE to do it:

public class Person{
private String id ;
private int age;
private String name;
/**
* @return the id
*/
public String getId() {
return id;
}
/**
* @param id the id to set
*/
public void setId(String id) {
this.id = id;
}
/**
* @return the age
*/
public int getAge() {
return age;
}
/**
* @param age the age to set
*/
public void setAge(int age) {
this.age = age;
}
/**
* @return the name
*/
public String getName() {
return name;
}
/**
* @param name the name to set
*/
public void setName(String name) {
this.name = name;
}
}

STEP 3

Insert element in Database

Main.java

import net.comtor.dao.*;

public class Main{
public static void main(String args[]){
Person p = new Person();
p.setId("787878");
p.setAge(33);
p.setName("Peter Parker");

ComtorDao dao = new ComtorJDBCDao("com.mysql.jdbc.Driver", // Driver
"jdbc:mysql://127.0.0.1/database" , // URL
"peter", // user
"spider" //password);

// You needs a ComtorDaoDescriptor to map class and table
ComtorDaoDescriptor desc = new GenericJDBCDaoDescriptor("person", Person.class);
desc.getField("id").setFindable(true);
dao.insertElement(p, desc);


}
}

STEP 4

Find Element

import net.comtor.dao.*;

public class Main{
public static void main(String args[]){
Person p = new Person();
ComtorDao dao = new ComtorJDBCDao("com.mysql.jdbc.Driver", // Driver
"jdbc:mysql://127.0.0.1/database" , // URL
"peter", // user
"spider" //password);

// You needs a ComtorDaoDescriptor to map class and table
ComtorDaoDescriptor desc = new GenericJDBCDaoDescriptor("person", Person.class);
desc.getField("id").setFindable(true);


ComtorDaoKey key = new ComtorDaoKey("id",new String("787878"));
Object obj = dao.findElement(key , this.getDaoDescriptor());
p = (Person) obj;

}
}

ADVANCED

You can create objects that extends ComtorDaoElementAutoDescriptor to insert, update, delete elements easiest than

Person p ;
//.....

p.insertInDAO();

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