Magento 1.9 : sql script is not running - php

Question

Basically what i am trying to do : I want some custom attributes for Customer entity. And to add those fields in db i am executing script.
I tried lots & lots of tweaks , methods but i cant solve SQL script error.
The important thing in it is : It makes entry in core_resource table.
My script made entry in core_resource.
I made extension according to this Alan storm Site .
Any help is highly appreciated.
My extension structure
Here is my coding part.
Config file of module
<?xml version="1.0"?>
<config>
<modules>
<StackExchange2_Customer>
<version>0.1.0</version>
</StackExchange2_Customer>
</modules>
<global>
<resources>
<stackExchange2_customer_setup>
<setup>
<module>StackExchange2_Customer</module>
<class>StackExchange2_Customer_Model_Resource_Mysql4_Setup</class>
<!-- <class>StackExchange2_Customer_Sql</class>-->
</setup>
<!--Mew node-->
<connection>
<use>core_setup</use>
</connection>
</stackExchange2_customer_setup>
<!--as per sOverflow-->
<stackExchange2_customer_write>
<connection>
<use>core_write</use>
</connection>
</stackExchange2_customer_write>
<stackExchange2_customer_read>
<connection>
<use>core_read</use>
</connection>
</stackExchange2_customer_read>
</resources>
</global>
</config>
Setup.php
<?php
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
//Mage_Eav_Model_Entity_Setup
class StackExchange2_Customer_Model_Resource_Mysql4_Setup extends Mage_Core_Model_Resource_Setup{
}
mysql4-install-0.1.0.php
<?php
//echo "in script";die;
$installer = $this;
echo "hi123";
$installer->startSetup();
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
//attr1
$installer->addAttribute('customer','name_of_child', array(
'type' => 'varchar',
'label' => 'Name of child',
'input' => 'text',
'position' => 120,
'required' => false,//or true
'is_system' => 0,
));
$attribute1 = Mage::getSingleton('eav/config')->getAttribute('customer', 'name_of_child');
//
$attribute1->setData('used_in_forms', array(
'adminhtml_customer',
'checkout_register',
'customer_account_create',
'customer_account_edit',
));
//
$attribute1->setData('is_user_defined', 0);
//
$attribute1->save();
Mage::log(__FILE__ . 'Update installed.');
$installer->endSetup();
Any help is highly appreciated
NOTE : In localhost it gives error : Am I using wrong class or anything missing?
( ! ) Fatal error: Call to undefined method StackExchange2_Customer_Model_Resource_Mysql4_Setup::addAttribute() in D:\xampp\htdocs\mykidscare\app\code\local\StackExchange2\Customer\sql\stackexchange2_customer_setup\mysql4-install-0.1.0.php on line 12

Answer 1

Add the following.
<resources>
<stackExchange2_customer_setup>
<setup>
<module>StackExchange2_Customer</module>
<class>Mage_Eav_Model_Entity_Setup</class>
</setup>
<connection>
<use>core_setup</use>
</connection>
</stackExchange2_customer_setup>
<stackExchange2_customer_write>
<connection>
<use>core_write</use>
</connection>
</stackExchange2_customer_write>
<stackExchange2_customer_read>
<connection>
<use>core_read</use>
</connection>
</stackExchange2_customer_read>
</resources>
You need to add Mage_Eav_Model_Entity_Setup class in setup in order to add any attribute.

Answer 2

Finally i solved it :) .
NOW it works after extending proper class (Mage_Customer_Model_Entity_Setup).
class StackExchange2_Customer_Model_Resource_Mysql4_Setup extends Mage_Customer_Model_Entity_Setup{
}