如何使用apache Cassandra构建分层数据库(How do i build a hierarchical database with apache Cassandra)

 我已将CustomCode_InvisibleProducts的扩展名更改为CustomCode_Visible，因为我不知道还能做什么。 
 
 不知何故，扩展程序立即开始运作。 
 
 最终代码： 
 
 应用程序的/ etc /模块/ CustomCode_Visible.xml 
 
<?xml version="1.0"?>
<config>
  <modules>
    <CustomCode_Visible>
      <active>true</active>
      <codePool>local</codePool>
    </CustomCode_Visible>
  </modules>
</config>
 
 应用程序/代码/本地/ CustomCode /可见光的/ etc / config.xml中 
 
<?xml version="1.0"?>
<config>
    <modules>
        <CustomCode_Visible>
            <version>0.2.0</version>
        </CustomCode_Visible>
    </modules>
    <global>
        <models>
            <customcode_visible>
                <class>CustomCode_Visible_Model</class>
            </customcode_visible>
            <catalog>
                <rewrite>
                    <product_visibility>CustomCode_Visible_Model_Catalog_Product_Visibility</product_visibility>
                </rewrite>
            </catalog>
        </models>
    </global>
</config>
 
 应用程序/代码/本地/ CustomCode /型号/目录/产品/ Visibility.php 
 
class CustomCode_Visible_Model_Catalog_Product_Visibility extends Mage_Catalog_Model_Product_Visibility
{

  ....

        public function getVisibleInSiteIds()
    {
        return array(self::VISIBILITY_IN_SEARCH, self::VISIBILITY_IN_CATALOG, self::VISIBILITY_BOTH, self::VISIBILITY_NOT_VISIBLE);
    }

I've changed the name of the extension from CustomCode_InvisibleProducts to CustomCode_Visible, because I didn't know what else to do.
 
And somehow, the extension started working right away.
 
Final code:
 
app/etc/modules/CustomCode_Visible.xml
 
<?xml version="1.0"?>
<config>
  <modules>
    <CustomCode_Visible>
      <active>true</active>
      <codePool>local</codePool>
    </CustomCode_Visible>
  </modules>
</config>
 
app/code/local/CustomCode/Visible/etc/config.xml
 
<?xml version="1.0"?>
<config>
    <modules>
        <CustomCode_Visible>
            <version>0.2.0</version>
        </CustomCode_Visible>
    </modules>
    <global>
        <models>
            <customcode_visible>
                <class>CustomCode_Visible_Model</class>
            </customcode_visible>
            <catalog>
                <rewrite>
                    <product_visibility>CustomCode_Visible_Model_Catalog_Product_Visibility</product_visibility>
                </rewrite>
            </catalog>
        </models>
    </global>
</config>
 
app/code/local/CustomCode/Model/Catalog/Product/Visibility.php
 
class CustomCode_Visible_Model_Catalog_Product_Visibility extends Mage_Catalog_Model_Product_Visibility
{

  ....

        public function getVisibleInSiteIds()
    {
        return array(self::VISIBILITY_IN_SEARCH, self::VISIBILITY_IN_CATALOG, self::VISIBILITY_BOTH, self::VISIBILITY_NOT_VISIBLE);
    }