Moqui学习之代码分析mantle priceServices.xml

<?xml version="1.0" encoding="UTF-8"?>
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<services xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://moqui.org/xsd/service-definition-1.6.xsd">
    <!--从这里可以得知该方法名称为getProductPrice-->
    <service verb="get" noun="ProductPrice" authenticate="anonymous-view">
        <description>Use the ProductPrice entity to determine the price to charge or pay for a Product.</description>
        <in-parameters>
            <!--这是一些输入参数所对应的   required若为true则表示为必须的参数  type表示输入的字段的数据类型   default为默认值-->
            <parameter name="productId" required="true"/>
            <parameter name="quantity" type="BigDecimal" default="1"/>

            <parameter name="priceUomId" default-value="USD"/>
            <parameter name="pricePurposeEnumId" default-value="PppPurchase"/>

            <parameter name="productStoreId"/>
            <parameter name="vendorPartyId"/>
            <parameter name="customerPartyId"/>

            <!-- TODO: to support look for records with this first and then with null: <parameter name="agreementId"/> -->
            <!-- TODO: to support look for records with this first and then with null: <parameter name="agreementItemSeqId"/> -->
        </in-parameters>
        <out-parameters>
             <!--这是输出参数   type表示输出参数的数据类型 -->
            <parameter name="price" type="BigDecimal"/>
            <parameter name="listPrice" type="BigDecimal"/>
            <parameter name="priceUomId"/>
        </out-parameters>
        <actions>
            <!-- get PptCurrent price -->
            <!-- try most constrained, back off from there -->
            <!--根据条件进行查询 其中service-call标签表示的是要调用的方法  in-map表示传入的参数 -->
            <if condition="productStoreId &amp;&amp; vendorPartyId &amp;&amp; customerPartyId">
                <service-call name="mantle.product.PriceServices.find#ProductPriceRecord" out-map="context"
                        in-map="[productId:productId, priceUomId:priceUomId, pricePurposeEnumId:pricePurposeEnumId, priceTypeEnumId:priceTypeEnumId, quantity:quantity,
                            priceTypeEnumId:'PptCurrent', productStoreId:productStoreId, vendorPartyId:vendorPartyId, customerPartyId:customerPartyId]"/>
            </if>
            <!-- try just vendor and customer -->
            <if condition="!productPrice &amp;&amp; vendorPartyId &amp;&amp; customerPartyId">
                <service-call name="mantle.product.PriceServices.find#ProductPriceRecord" out-map="context"
                        in-map="[productId:productId, priceUomId:priceUomId, pricePurposeEnumId:pricePurposeEnumId, priceTypeEnumId:priceTypeEnumId, quantity:quantity,
                            priceTypeEnumId:'PptCurrent', vendorPartyId:vendorPartyId, customerPartyId:customerPartyId]"/>
            </if>
            <!-- try just customer and store -->
            <if condition="!productPrice &amp;&amp; productStoreId &amp;&amp; customerPartyId">
                <service-call name="mantle.product.PriceServices.find#ProductPriceRecord" out-map="context"
                        in-map="[productId:productId, priceUomId:priceUomId, pricePurposeEnumId:pricePurposeEnumId, priceTypeEnumId:priceTypeEnumId, quantity:quantity,                        
    priceTypeEnumId:'PptCurrent', productStoreId:productStoreId, customerPartyId:customerPartyId]"/>    
        </if>         
   <!-- try just store -->        
    <if condition="!productPrice &amp;&amp; productStoreId">      
          <service-call name="mantle.product.PriceServices.find#ProductPriceRecord" out-map="context"                    
    in-map="[productId:productId, priceUomId:priceUomId, pricePurposeEnumId:pricePurposeEnumId, priceTypeEnumId:priceTypeEnumId, quantity:quantity,      
                      priceTypeEnumId:'PptCurrent', productStoreId:productStoreId]"/>          
  </if>       
     <!-- try just vendor -->      
      <if condition="!productPrice &amp;&amp; vendorPartyId">               
 <service-call name="mantle.product.PriceServices.find#ProductPriceRecord" out-map="context"                 
       in-map="[productId:productId, priceUomId:priceUomId, pricePurposeEnumId:pricePurposeEnumId, priceTypeEnumId:priceTypeEnumId, quantity:quantity,             
               priceTypeEnumId:'PptCurrent', vendorPartyId:vendorPartyId]"/>          
  </if>       
     <set field="price" from="productPrice?.price"/>          
  <!-- get PptList price -->     
       <set field="productPrice" from="null"/>           
 <!-- try most constrained, back off from there -->     
       <if condition="productStoreId &amp;&amp; vendorPartyId &amp;&amp; customerPartyId">       
         <service-call name="mantle.product.PriceServices.find#ProductPriceRecord" out-map="context"                  
      in-map="[productId:productId, priceUomId:priceUomId, pricePurposeEnumId:pricePurposeEnumId, priceTypeEnumId:priceTypeEnumId, quantity:quantity,                   
         priceTypeEnumId:'PptList', productStoreId:productStoreId, vendorPartyId:vendorPartyId, customerPartyId:customerPartyId]"/>  
          </if>     
       <!-- try just vendor and customer -->     
       <if condition="!productPrice &amp;&amp; vendorPartyId &amp;&amp; customerPartyId">        
        <service-call name="mantle.product.PriceServices.find#ProductPriceRecord" out-map="context"                   
     in-map="[productId:productId, priceUomId:priceUomId, pricePurposeEnumId:pricePurposeEnumId, priceTypeEnumId:priceTypeEnumId, quantity:quantity,                
            priceTypeEnumId:'PptList', vendorPartyId:vendorPartyId, customerPartyId:customerPartyId]"/>            
</if>           
 <!-- try just customer and store -->          
  <if condition="!productPrice &amp;&amp; productStoreId &amp;&amp; customerPartyId">                
<service-call name="mantle.product.PriceServices.find#ProductPriceRecord" out-map="context"           
             in-map="[productId:productId, priceUomId:priceUomId, pricePurposeEnumId:pricePurposeEnumId, priceTypeEnumId:priceTypeEnumId, quantity:quantity,         
                   priceTypeEnumId:'PptList', productStoreId:productStoreId, customerPartyId:customerPartyId]"/>           
 </if>            
<!-- try just store -->        
    <if condition="!productPrice &amp;&amp; productStoreId">               
 <service-call name="mantle.product.PriceServices.find#ProductPriceRecord" out-map="context"                      
  in-map="[productId:productId, priceUomId:priceUomId, pricePurposeEnumId:pricePurposeEnumId, priceTypeEnumId:priceTypeEnumId, quantity:quantity,             
               priceTypeEnumId:'PptList', productStoreId:productStoreId]"/>            
</if>        
    <!-- try just vendor -->           
 <if condition="!productPrice &amp;&amp; vendorPartyId">           
     <service-call name="mantle.product.PriceServices.find#ProductPriceRecord" out-map="context"                     
   in-map="[productId:productId, priceUomId:priceUomId, pricePurposeEnumId:pricePurposeEnumId, priceTypeEnumId:priceTypeEnumId, quantity:quantity,                      
      priceTypeEnumId:'PptList', vendorPartyId:vendorPartyId]"/>      
      </if>  
       <!--设置输出参数的显示-->   
       <set field="listPrice" from="productPrice?.price"/>        
    <set field="price" from="price ?: listPrice ?: 0"/>          
  <!-- <log level="warn" message="========== BEFORE rules productId=${productId}, price=${price}, listPrice=${listPrice}"/> -->           
 <!-- run the ProductPriceKS knowledge session rules -->          
  <script>ec.getStatelessKieSession("ProductPriceKS").execute([])</script>         
   <!-- <log level="warn" message="========== AFTER rules productId=${productId}, price=${price}, listPrice=${listPrice}"/> -->      
  </actions>  
  </service>   
 <service verb="find" noun="ProductPriceRecord">        
<description>This is an internal service called by get#ProductPrice.</description>   
     <in-parameters>    
        <parameter name="productId" required="true"/>     
       <parameter name="priceUomId" required="true"/>          
  <parameter name="pricePurposeEnumId" required="true"/>           
 <parameter name="priceTypeEnumId" required="true"/>         
   <parameter name="quantity" type="BigDecimal" required="true"/>           
 <parameter name="productStoreId"/>           
 <parameter name="vendorPartyId"/>            
<parameter name="customerPartyId"/>      
  </in-parameters>    
    <out-parameters><parameter name="productPrice" type="EntityValue"/>
</out-parameters>        
<actions>   
         <!-- <log level="warn" message="finding price record with context: ${context}"/> -->           
 <entity-find entity-name="mantle.product.ProductPrice" list="productPriceList" cache="true">               
 <econdition-object field="[productId:productId, priceUomId:priceUomId,                   
     pricePurposeEnumId:pricePurposeEnumId, priceTypeEnumId:priceTypeEnumId]"/>           
     <econdition field-name="minQuantity" operator="less-equals" from="quantity"/>   
             <econdition field-name="productStoreId" ignore-if-empty="true"/>        
        <econdition field-name="vendorPartyId" ignore-if-empty="true"/>              
  <econdition field-name="customerPartyId" ignore-if-empty="true"/>                
<order-by field-name="-fromDate"/>
<!-- get most recent price records first -->           
     <order-by field-name="-minQuantity"/>
<!-- get highest qualifying (<=quantity) minQuantity records first -->           
 </entity-find>           
 <!-- <log level="warn" message="CALC productPriceList: ${productPriceList}"/> -->            
<filter-map-list list="productPriceList"><date-filter/></filter-map-list>           
 <set field="productPrice" from="productPriceList?.first"/>      
  </actions>    
</service>
</services>

这是刚开始时进入的界面，从这里可以看出他所需要的输入参数和输出参数：

 <in-parameters>
             <parameter name="productId" required="true"/>
             <parameter name="quantity" type="BigDecimal" default="1"/>

             <parameter name="priceUomId" default-value="USD"/>
             <parameter name="pricePurposeEnumId" default-value="PppPurchase"/>

             <parameter name="productStoreId"/>
             <parameter name="vendorPartyId"/>
             <parameter name="customerPartyId"/>

             <!-- TODO: to support look for records with this first and then with null: <parameter name="agreementId"/> -->
             <!-- TODO: to support look for records with this first and then with null: <parameter name="agreementItemSeqId"/> -->
         </in-parameters>

这是定义输入参数的代码，与页面对应。

 <out-parameters>
             <parameter name="price" type="BigDecimal"/>
             <parameter name="listPrice" type="BigDecimal"/>
             <parameter name="priceUomId"/>
         </out-parameters>

这是定义输出参数的代码，与页面对应。

从actions中的代码可以看出他是调用的另一个service的方法：即mantle.product.PriceServices,find#ProductPriceRecord方法。

 <!-- get PptCurrent price -->
            <!-- try most constrained, back off from there -->
            <if condition="productStoreId &amp;&amp; vendorPartyId &amp;&amp; customerPartyId">
                <service-call name="mantle.product.PriceServices.find#ProductPriceRecord" out-map="context"
                        in-map="[productId:productId, priceUomId:priceUomId, pricePurposeEnumId:pricePurposeEnumId, priceTypeEnumId:priceTypeEnumId, quantity:quantity,
                            priceTypeEnumId:'PptCurrent', productStoreId:productStoreId, vendorPartyId:vendorPartyId, customerPartyId:customerPartyId]"/>
            </if>

下面就来看这个service方法的定义：

 <service verb="find" noun="ProductPriceRecord">
        <description>This is an internal service called by get#ProductPrice.</description>
        <in-parameters>
            <parameter name="productId" required="true"/>
            <parameter name="priceUomId" required="true"/>
            <parameter name="pricePurposeEnumId" required="true"/>
            <parameter name="priceTypeEnumId" required="true"/>
            <parameter name="quantity" type="BigDecimal" required="true"/>
            <parameter name="productStoreId"/>
            <parameter name="vendorPartyId"/>
            <parameter name="customerPartyId"/>
        </in-parameters>
        <out-parameters><parameter name="productPrice" type="EntityValue"/></out-parameters>
</service>

从这里可以看出该方法的输入参数和输出参数，它执行时所需要的参数是通过上一个方法传入的，具体是：

 <if condition="productStoreId &amp;&amp; vendorPartyId &amp;&amp; customerPartyId">
                 <service-call name="mantle.product.PriceServices.find#ProductPriceRecord" out-map="context"
                         in-map="[productId:productId, priceUomId:priceUomId, pricePurposeEnumId:pricePurposeEnumId, priceTypeEnumId:priceTypeEnumId, quantity:quantity,
                             priceTypeEnumId:'PptCurrent', productStoreId:productStoreId, vendorPartyId:vendorPartyId, customerPartyId:customerPartyId]"/>
             </if>

通过service-call标签中的in-map元素来实现的。