[英]how to compare integer properties in filter mediation in wso2 esb?
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 false my source is : 我是wso2 esb的新手,并定义了3个返回整数值的服务,并使用filter mediator从一个到另一个路由,但不正确的工作,在过滤模式下总是返回false我的源是:
<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>
I tried your scenario and got the same output as yours. 我尝试了你的场景并获得了与你相同的输出。 Then looked deep into it as this was a basic functionality and as I thought I've done something similar before. 然后仔细研究它,因为这是一个基本的功能,因为我以前做过类似的事情。
The issue here is in the type of the property. 这里的问题是属性的类型。 For some strange reason INTEGER
does not work here. 出于某些奇怪的原因, INTEGER
在这里不起作用。 You need to have DOUBLE
or STRING
. 你需要有DOUBLE
或STRING
。 Even if you have string, it will correctly cast it when you do a comparison as in here. 即使你有字符串,它也会在你进行比较时正确地投射它。 The following worked for me. 以下对我有用。
<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>
following is an example done with switch mediator, 以下是使用switch mediator完成的示例,
<switch source="get-property('propertyCompare')">
<case regex="1">
<log>
<property name="one" value="__________ONE__________"/>
</log>
</case>
<case regex="2">
<log>
<property name="two" value="__________TWO__________"/>
</log>
</case>
</switch>
replace the log mediators with send mediator according to your needs. 根据您的需要用send mediator替换日志调解器。
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