如何比较wso2 esb中过滤器中介的整数属性？

问题描述

我是wso2 esb中的新手，并定义了3个返回整数值的服务，并使用过滤器中介从一个到另一个，但不正确的工作，并在过滤器模式总是返回false
我的来源是：

i am new in wso2 esb and define 3 service that return integer value and use filter mediator to rout from one to another , but not correct work and in filter mode always return falsemy source is :

<sequence xmlns="http://ws.apache.org/ns/synapse" name="SeqOne">
<log level="full"/>
<property xmlns:ns="http://org.apache.synapse/xsd" xmlns:m0="http://tempuri.org/"        name="CParam" expression="//m0:SumSerViseResponse/m0:SumSerViseResult" scope="default"   type="INTEGER"/>
<log level="custom">
  <property xmlns:ns="http://org.apache.synapse/xsd" name="CParam"  expression="$ctx:CParam"/>
</log>
<property name="propertyA" value="4" scope="default" type="INTEGER"/>
<log level="custom">
  <property xmlns:ns="http://org.apache.synapse/xsd" name="propertyA" expression="get-property('propertyA')"/>
</log>
<property xmlns:ns="http://org.apache.synapse/xsd" name="propertyCompare" expression="$ctx:CParam > get-property('propertyA')" type="STRING"/>
<log level="custom">
  <property xmlns:ns="http://org.apache.synapse/xsd" name="propertyCompare" expression="get-property('propertyCompare')"/>
</log>
<filter xmlns:ns="http://org.apache.synapse/xsd" source="get-property('propertyCompare')" regex="true">
  <then>

推荐答案

。然后深入了解它，因为这是一个基本的功能，因为我以前做过类似的事情。

I tried your scenario and got the same output as yours. Then looked deep into it as this was a basic functionality and as I thought I've done something similar before.

问题在于属性的类型。出于一些奇怪的原因 INTEGER 在这里不起作用。您需要 DOUBLE 或 STRING 。即使你有字符串，当你在这里做一个比较时，它会正确地施放它。以下为我工作。

The issue here is in the type of the property. For some strange reason INTEGER does not work here. You need to have DOUBLE or STRING. Even if you have string, it will correctly cast it when you do a comparison as in here. The following worked for me.

<inSequence>
     <log level="full"/>
     <property xmlns:m0="http://tempuri.org/"
               name="CParam"
               expression="//m0:SumSerViseResponse/m0:SumSerViseResult"
               scope="default"
               type="DOUBLE"/>
     <log level="custom">
        <property name="CParam" expression="$ctx:CParam"/>
     </log>
     <property name="propertyA" value="4.0" scope="default" type="DOUBLE"/>
     <log level="custom">
        <property xmlns:ns="http://org.apache.synapse/xsd"
                  name="propertyA"
                  expression="get-property('propertyA')"/>
     </log>
     <property name="propertyCompare"
               expression="$ctx:CParam > get-property('propertyA')"
               scope="default"
               type="BOOLEAN"/>
     <log level="custom">
        <property name="propertyCompare" expression="get-property('propertyCompare')"/>
     </log>
     <filter xpath="$ctx:CParam > get-property('propertyA')">
        <then>
           <send>
              <endpoint>
                 <address uri="http://localhost:9000/services/SimpleStockQuoteService"/>
              </endpoint>
           </send>
        </then>
        <else>
           <drop/>
        </else>
     </filter>
  </inSequence>

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