Bpel数组转换foreach(Bpel arrays transformation foreach)

我有一个bpel进程，它接收一个数组并输出另一个数组。

问题是，我需要获得第一个元素，填充第二个元素并在第二个元素中添加一些元素。

我的第一个数组来自这种对象：

<xsd:complexType name="comment_A"> <xsd:sequence> <xsd:element name="id" type="xsd:int"/> <xsd:element name="username" type="xsd:string"/> <xsd:element name="name" type="xsd:string"/> <xsd:element name="picture" type="xsd:base64Binary"/> <xsd:element name="date" type="xsd:string"/> <xsd:element name="hour" type="xsd:string"/> <xsd:element name="bus-line" type="xsd:string"/> <xsd:element name="bus-number" type="xsd:integer"/> <xsd:element name="description" type="xsd:string"/> <xsd:element name="rate" type="xsd:int"/> </xsd:sequence> </xsd:complexType>

我的第二个：

<xsd:complexType name="comment_B"> <xsd:sequence> <xsd:element name="id" type="xsd:int"/> <xsd:element name="username" type="xsd:string"/> <xsd:element name="name" type="xsd:string"/> <xsd:element name="picture" type="xsd:base64Binary"/> <xsd:element name="date" type="xsd:string"/> <xsd:element name="hour" type="xsd:string"/> <xsd:element name="bus-line" type="xsd:string"/> <xsd:element name="bus-number" type="xsd:integer"/> <xsd:element name="description" type="xsd:string"/> <xsd:element name="rate" type="xsd:int"/> <xsd:element name="type-comment" type="xsd:string"/> <xsd:element name="liked-number" type="xsd:int"/> </xsd:sequence> </xsd:complexType>

首先，我尝试迭代第一个数组，用第二个数组填充两个共同的属性。我尝试使用forEach元素。

我的代码看起来像这样：

<forEach parallel="yes" counterName="c" name="forEachComment"> <startCounterValue>1</startCounterValue> <finalCounterValue>count($comments.VwCommentCollection/ns3:VwComment)</finalCounterValue> <scope name="Scope1"> <assign name="assignResult"> <extensionAssignOperation> <bpelx:copyList> <bpelx:from>$comments.VwCommentCollection[$c]</bpelx:from> <bpelx:to>$outputVariable.payload</bpelx:to> </bpelx:copyList> </extensionAssignOperation> <copy> <from>$comments.VwCommentCollection[$c]/ns3:VwComment/ns3:id</from> <to>$outputVariable.payload/ns2:comment/ns2:id</to> </copy> </assign> </scope> </forEach>

我尝试使用id元素进行测试，但是当comment_A数组的大小大于1时，我收到一个异常

$ comment是我的变量，其中是comment_A数组

I have a bpel process which receive an array and output another one.

The thing is, I need to get the first one elements, populate the second one and add some for elements in the second one.

My first one array is from this kind of object:

<xsd:complexType name="comment_A"> <xsd:sequence> <xsd:element name="id" type="xsd:int"/> <xsd:element name="username" type="xsd:string"/> <xsd:element name="name" type="xsd:string"/> <xsd:element name="picture" type="xsd:base64Binary"/> <xsd:element name="date" type="xsd:string"/> <xsd:element name="hour" type="xsd:string"/> <xsd:element name="bus-line" type="xsd:string"/> <xsd:element name="bus-number" type="xsd:integer"/> <xsd:element name="description" type="xsd:string"/> <xsd:element name="rate" type="xsd:int"/> </xsd:sequence> </xsd:complexType>

My second one:

<xsd:complexType name="comment_B"> <xsd:sequence> <xsd:element name="id" type="xsd:int"/> <xsd:element name="username" type="xsd:string"/> <xsd:element name="name" type="xsd:string"/> <xsd:element name="picture" type="xsd:base64Binary"/> <xsd:element name="date" type="xsd:string"/> <xsd:element name="hour" type="xsd:string"/> <xsd:element name="bus-line" type="xsd:string"/> <xsd:element name="bus-number" type="xsd:integer"/> <xsd:element name="description" type="xsd:string"/> <xsd:element name="rate" type="xsd:int"/> <xsd:element name="type-comment" type="xsd:string"/> <xsd:element name="liked-number" type="xsd:int"/> </xsd:sequence> </xsd:complexType>

So first, I tried iterate over the first array to populate the second one with properties which both have in common. I tried use forEach element.

My code seems like this:

<forEach parallel="yes" counterName="c" name="forEachComment"> <startCounterValue>1</startCounterValue> <finalCounterValue>count($comments.VwCommentCollection/ns3:VwComment)</finalCounterValue> <scope name="Scope1"> <assign name="assignResult"> <extensionAssignOperation> <bpelx:copyList> <bpelx:from>$comments.VwCommentCollection[$c]</bpelx:from> <bpelx:to>$outputVariable.payload</bpelx:to> </bpelx:copyList> </extensionAssignOperation> <copy> <from>$comments.VwCommentCollection[$c]/ns3:VwComment/ns3:id</from> <to>$outputVariable.payload/ns2:comment/ns2:id</to> </copy> </assign> </scope> </forEach>

I tried do this first just with id element for a test, however when the comment_A array has size greater than 1, I receive an exception

$comment is my variable which comment_A array