abstract------------------------mysql4_abstract--------------mysql4_collection_abstract--------------------内核类的函数分析！！！
内核函数
mage_core_model_abstract
mage_core_model_mysql4_abstract
mage_core_model_mysql4_collection_abstract
使用mage::getmodel(core/abstract)的时候会指定$this->_resourceName和$this->_resourceCollectionName。
对于使用，已经做好文档，
下面这些是介绍上面三个系统类功能:
1.
mage_core_model_abstract
extends Varien_Object
1.1
//Set resource names
function _setResourceModel
1.2
//Get resource instance @return Mage_Core_Model_Mysql4_Abstract
public function _getResource()
1.3
//Retrieve identifier field name for model @return string
public function getIdFieldName()
1.4
//Retrieve model object identifier @return mixed
public function getId()
1.5
//Declare model object identifier value @return Mage_Core_Model_Abstract
public function setId($id)
1.6
//Retrieve model resource name @return string
public function getResourceName()
1.7
//Get collection instance @return object
public function getResourceCollection()
1.8
//
public function getCollection() ---->return $this->getResourceCollection();
1.9
// * Load object data @return Mage_Core_Model_Abstract
public function load($id, $field=null)
1.10
//Save object data @return Mage_Core_Model_Abstract
public function save()
1.11
//Remove model onject related cache @return Mage_Core_Model_Abstract
public function cleanModelCache()
1.12
//Delete object from database @return Mage_Core_Model_Abstract
public function delete()
1.13
public function getResource()
{
return $this->_getResource();
}
故：mage_core_model_abstract
1.1
只能处理一些简单的关于数据库的操作。
在操作的时候，数据保存在自身的变量里面，只能进行save，delete，load等这些简单的操作。
1.2
得到mage_core_model_mysql4_abstract
mage_core_model_mysql4_collection_abstract的实例化对象。
1.3
得到id方面的函数
1.4
内存方面的函数
1.5
before，after，地球人都知道。
总体来说，作为一个入口，又能做一些简单的操作
2
mage_core_model_mysql4_abstract
extends Mage_Core_Model_Resource_Abstract
2.1
初始化
//
protected function _init($mainTable, $idFieldName)
{
$this->_setMainTable($mainTable, $idFieldName);
}
2.1
//* Initialize connections and tables for this resource model
protected function _setResource($connections, $tables=null)
2.2
//Set main entity table name and primary key field name @return Mage_Core_Model_Mysql4_Abstract
protected function _setMainTable($mainTable, $idFieldName=null)
2.3
//Get primary key field name
public function getIdFieldName()
2.4
//* Get main table name
public function getMainTable()
2.5
// * Get table name for the entity
public function getTable($entityName)
2.6
//Retrieve table name for the entity separated value
public function getValueTable($entityName, $valueType)
2.7
//* Get connection by name or type
protected function _getConnection($connectionName)
2.8
// * Retrieve connection for read data @return Zend_Db_Adapter_Abstract
protected function _getReadAdapter()
2.9
//* Retrieve connection for read data @return Varien_Db_Adapter_Pdo_Mysql
protected function _getReadAdapter()
2.10
Retrieve connection for write data @return Varien_Db_Adapter_Pdo_Mysql
protected function _getWriteAdapter()
2.11
//Temporary resolving collection compatibility
@return Varien_Db_Adapter_Pdo_Mysql
public function getReadConnection()
2.12
//* Load an object @return Mage_Core_Model_Mysql4_Abstract
public function load(Mage_Core_Model_Abstract $object, $value, $field=null)
2.13
//Retrieve select object for load object data @return Zend_Db_Select
protected function _getLoadSelect($field, $value, $object)
2.14
// * Save object object data
@param Mage_Core_Model_Abstract $object
@return Mage_Core_Model_Mysql4_Abstract
public function save(Mage_Core_Model_Abstract $object)
2.15
//Delete the object
@param Varien_Object $object
@return Mage_Core_Model_Mysql4_Abstract
public function delete(Mage_Core_Model_Abstract $object)
2.16
// * Add unique field restriction
public function addUniqueField($field)
2.17
//* Unserialize serializeable object fields
public function unserializeFields(Mage_Core_Model_Abstract $object)
2.18
// Serialize serializeable fields of the object
protected function _serializeFields(Mage_Core_Model_Abstract $object)
2.19
2.1
字段序列化
2.2
唯一字段值的一系列操作
2.3
表，id，资源的初始化，以及操作
2.4
读写适配器的得到
2.5
对Mage_Core_Model_Abstract $object的save，delete快速操作。
Mage_Core_Model_mysql4_Abstract是数据操作的前序工作的实现，比如得到connection，readAdapter，table等的得到。
3
mage_core_model_mysql4_collection_abstract
3.1
//* Get Zend_Db_Select instance and applies fields to select if needed @return Varien_Db_Select
public function getSelect()
3.2
//Retrieve initial fields to select like id field
@return array
protected function _getInitialFieldsToSelect()
3.3
protected function _initInitialFieldsToSelect()
3.4
public function addFieldToSelect($field, $alias = null)
3.5
public function removeFieldFromSelect($field, $isAlias = false)
3.6
//* @return Mage_Core_Model_Mysql4_Collection_Abstract
public function removeAllFieldsFromSelect()
3.7
Get resource instance
@return Mage_Core_Model_Mysql4_Abstract
public function getResource()
3.8
public function getTable($table)
3.9
//Retrive all ids for collection
@return array
public function getAllIds()
3.10
public function join($table, $cond, $cols='*')
3.11
public function save()
3.1
内存方面的操作
3.2