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From <rambabu.pir...@wipro.com>
Subject RE: Urgent help Needed - Join Query
Date Wed, 19 Apr 2006 04:18:30 GMT

Here i am giving the complete information:

I have defined two result maps.

<resultMap id="userMap" class="user">

<result property="userid" column="USR_ID"/>

<result property="password" column="USR_PWD"/>

<result property="username" column="USR_NAME"/>

<result property="role" column="ROLE_ID"/>

<result property="code" column="USR_CODE"/>

<result property="email" column="EMAIL_ID"/>

<result property="phoneno" column="PHONE_NUMBER"/>

<result property="description" column="DESCRIPTION"/>

<result property="listDynamicProperties" resultMap="User.userMap1"/>

</resultMap>



<resultMap id="userMap1" class="dynamicProperty">

<result property="propertyName" column="PROPERTY_NAME"/>

<result property="propertyValue" column="PROPERTY_VALUE"/>

</resultMap>

These are my bean classes:

public class User {

 
 public User()
 {
 
 }

 private List  listDynamicProperties;


 private String userid;

 private String username;

 private int role;

 
 public String getUsername() {
  return username;
 }

 public void setUsername(String username) {
  this.username = username;
 }

 public int getRole()
 {
  return role;
 }

 public void setRole(int role) {
  this.role = role;
 }

 public String getUserid() {
  return userid;
 }


 public void setUserid(String userid) {
  this.userid = userid;
 }


 public List getListDynamicProperties()
 {
  return listDynamicProperties;
 
 }


 public void setListDynamicProperties(ArrayList listDynamicProperties1)
 {
   this.listDynamicProperties = listDynamicProperties1; 
 
 }

}

public class DynamicProperty {

 private String propertyName;
 private String propertyValue;
       
 /*
  * name and value should not be null.
  * If null throw Exception.
  */
 public DynamicProperty()
 {
 
 }

    public String getPropertyName() {
        return propertyName;
    }
   

    public void setPropertyName(String propertyName) {
        this.propertyName = propertyName;
    }
   

    public String getPropertyValue() {
        return propertyValue;
    }
   

    public void setPropertyValue(String propertyValue) {
  System.out.println("Setting DynamicProperties");
        this.propertyValue = propertyValue;
    }
   

The data in the data base is:
USR_BASIC_INFO :

USR_ID,  USR_NAME, ROLE_ID
    1, xxxx, 200
    2, yyyy, 300

USR_EXTENSION_INFO:

USR_ID, PROPERTY_NAME, PROPERTY_VALUE :
1, city, foster city
1, state, california
2, city,  hyd
2, state, ap

My select query is:
<select id="select4" resultMap="userMap">

select BASIC.USR_ID,  BASIC.USR_NAME,
BASIC.ROLE_ID,EXTENSIN.PROPERTY_NAME,EXTENSIN.PROPERTY_VALUE from
USR_BASIC_INFO BASIC, USR_EXTENSION_INFO EXTENSIN where
BASIC.USR_ID=EXTENSIN.USR_ID;

</select>

Now i am getting four results. where i am expecting two results.

i am getting the result as "4 User objects" and the data as:

 1,xxxx, 200, city, foster city

 1,xxxx, 200,state, california

 2,yyyy,300,city,  hyd

 2,yyyy,300,state, ap

But i am expecting two User objects. And each User should contain List
of dynamicProeprties object. Is it problem in Ibatis?.


________________________________

From: Poitras Christian [mailto:Christian.Poitras@ircm.qc.ca]
Sent: Tuesday, April 18, 2006 9:40 PM
To: user-java@ibatis.apache.org
Subject: RE: Urgent help Needed - Join Query


First, I believe you should make a link between your 2 objects.

In User add a List property that will contain user addresses. With this
solution it will be easy to populate User and Address List at the same
time.
Also add this in the User resultMap.
<result property="addressList" column="userId" select="getAddressByUser"
/>
And the query "getAddressByUser" will contain
select * from User, Address  where User.UserId = Address.UserId and
User.UserId = #value#

You can also populate the User and it's Addresses in one call.

Christian
Christian.Poitras@ircm.qc.ca

________________________________

From: rambabu.piridi@wipro.com [mailto:rambabu.piridi@wipro.com]
Sent: Tuesday, 18 April 2006 11:22
To: user-java@ibatis.apache.org
Subject: Urgent help Needed - Join Query



Hi,

   I have two tables  User and Address. The primary key of the User
table is also the foreign key of Address table.

It is possible that a user may or may not have address ( Property )
associated with him and also one user can have more than one address
(property). I have two Java classes which are useful to set and get the
values of  the data members.


public class User {

         private String UserId ;
         private String UserName;
         private String Designation;
         private String Address;

 public String getAddress() {  return Address; }

 public String getDesignation() {  return Designation; }

 public String getUserId() {  return UserId; }

 public String getUserName() {  return UserName; }

 public void setAddress(String address) {  Address = address; }

 public void setDesignation(String designation) {  Designation =
designation; }

 public void setUserId(String userId) {  UserId = userId; }

 public void setUserName(String userName) {  UserName = userName; }

}


public class Address
 {

 private String UserId;
 private String City;
 private String State;

 public String getCity() {  return City; }

 public String getState() {  return State; }

 public String getUserId() {  return UserId; }

 public void setCity(String city) {  City = city; }

 public void setState(String state) {  State = state; }

 public void setUserId(String userId) {  UserId = userId; }

}


The following table shows the structure of the table.

User
===============
UserId  - PrimaryKey
UserName
Designation
Address


Address
===============
UserId - ForeignKey
City
State


the following table data is an example data.

User
======================================================
UserId                UserName               Designation
Address

    1                    Abc                        S.E
City, New Yark                         
    2                    Xyz                         S.E
---             
    3                    Cde                        P.M
----
 


Address
=======================================================
UserId                PropertyName         PropertyName

    1                    City                        New Yark

    1                    Country                   America

    2                    --                               ---

    3                    City                         NewYark

    4                    City                         London



When I am trying to get the data from both the tables using the
following Query

select * from User, Address  where User.UserId = Address.UserId

the result is

1, Abc , S.E                 
1, City, New Yark                         
1, Country, America                          
       
           Now my requirement is to get the data from both the tables
and store them as User Object.
Can any one specify

                             1. IBatis SQL Mappings for the tables.

                             2. SQL Qury to get the data from both the
tables and store it in User Object.



regards,

rambabu

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The information contained in this electronic message and any attachments to this message are
intended for the exclusive use of the addressee(s) and may contain proprietary, confidential
or privileged information. If you are not the intended recipient, you should not disseminate,
distribute or copy this e-mail. Please notify the sender immediately and destroy all copies
of this message and any attachments.

WARNING: Computer viruses can be transmitted via email. The recipient should check this email
and any attachments for the presence of viruses. The company accepts no liability for any
damage caused by any virus transmitted by this email.

www.wipro.com
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