如何在 BPEL 流程中分配数组
我有一个简单的字符串作为输入,并在调用将字符串添加到数组中的 Web 服务之后。现在我必须将数组分配给输出(我已将其设置为模式中的字符串数组)。企业管理器给出了错误并表示结果包含给定 XPath 表达式的多个节点。分配活动显示为待处理。所以基本上我如何将数组或列表分配给也设置为数组的输出变量。使用的 wsdl 文件是:
<?xml version = '1.0' encoding = 'UTF-8'?>
<definitions
name="ReturnTypeService"
targetNamespace="http://examples2/"
xmlns="http://schemas.xmlsoap.org/wsdl/"
xmlns:tns="http://examples2/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
>
<types>
<xsd:schema>
<xsd:import namespace="http://examples2/" schemaLocation="http://localhost:7101/Examples2-Examples2-context-root/ReturnTypePort?xsd=1"/>
</xsd:schema>
</types>
<message name="display">
<part name="parameters" element="tns:display"/>
</message>
<message name="displayResponse">
<part name="parameters" element="tns:displayResponse"/>
</message>
<portType name="ReturnType">
<operation name="display">
<input message="tns:display"/>
<output name="displayResponse"
message="tns:displayResponse"/>
</operation>
</portType>
<binding name="ReturnTypePortBinding" type="tns:ReturnType">
<soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
<operation name="display">
<soap:operation soapAction=""/>
<input>
<soap:body use="literal"/>
</input>
<output>
<soap:body use="literal"/>
</output>
</operation>
</binding>
<service name="ReturnTypeService">
<port name="ReturnTypePort" binding="tns:ReturnTypePortBinding">
<soap:address location="http://localhost:7101/Examples2-Examples2-context-root/ReturnTypePort"/>
</port>
</service>
</definitions>
@vanto有没有办法分配一个数组输入变量到 invoke_input 变量?问题是我的 Web 服务中有多个输入,因此我无法将输入变量中的包装元素复制到调用变量中的包装变量。将在此处复制代码片段:
<assign name="Assign1">
<copy>
<from variable="inputVariable" part="payload"
query="/ns2:process/ns2:dsaName"/>
<to variable="Invoke1_processList_InputVariable"
part="parameters" query="/ns1:processList/dsaName"/>
</copy>
<copy>
<from variable="inputVariable" part="payload"
query="/ns2:process/ns2:linesOfData"/>
<to variable="Invoke1_processList_InputVariable"
part="parameters" query="/ns1:processList/linesOfData"/>
</copy>
<copy>
<from variable="inputVariable" part="payload"
query="/ns2:process/ns2:description"/>
<to variable="Invoke1_processList_InputVariable"
part="parameters" query="/ns1:processList/description"/>
</copy>
<copy>
<from variable="inputVariable" part="payload"
query="/ns2:process/ns2:application"/>
<to variable="Invoke1_processList_InputVariable"
part="parameters" query="/ns1:processList/application"/>
</copy>
</assign>
问题只是一个是列表类型,所有其他都是字符串类型。其 XML 是:
<element name="process">
<complexType>
<sequence>
<element name="dsaName" type="string" minOccurs="0"/>
<element name="linesOfData" type="string" minOccurs="0" maxOccurs="unbounded"/>
<element name="description" type="string" minOccurs="0"/>
</sequence>
</complexType>
</element>
<element name="processResponse">
<complexType>
<sequence>
<element name="result" type="string" minOccurs="0" maxOccurs="unbounded"/>
</sequence>
</complexType>
</element>
</schema>
I have a simple string as input and after calling a web service which adds the string to an array.Now i have to assign the array to the output(which i have set as a string array in the schema).The enterprise manager gives a fault and says the result contains multiple nodes for the XPath expression given.The Assign activity is shown as pending.So basically how do i assign an array or a list to the output variable which is also set as an array.The wsdl file used is:
<?xml version = '1.0' encoding = 'UTF-8'?>
<definitions
name="ReturnTypeService"
targetNamespace="http://examples2/"
xmlns="http://schemas.xmlsoap.org/wsdl/"
xmlns:tns="http://examples2/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
>
<types>
<xsd:schema>
<xsd:import namespace="http://examples2/" schemaLocation="http://localhost:7101/Examples2-Examples2-context-root/ReturnTypePort?xsd=1"/>
</xsd:schema>
</types>
<message name="display">
<part name="parameters" element="tns:display"/>
</message>
<message name="displayResponse">
<part name="parameters" element="tns:displayResponse"/>
</message>
<portType name="ReturnType">
<operation name="display">
<input message="tns:display"/>
<output name="displayResponse"
message="tns:displayResponse"/>
</operation>
</portType>
<binding name="ReturnTypePortBinding" type="tns:ReturnType">
<soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
<operation name="display">
<soap:operation soapAction=""/>
<input>
<soap:body use="literal"/>
</input>
<output>
<soap:body use="literal"/>
</output>
</operation>
</binding>
<service name="ReturnTypeService">
<port name="ReturnTypePort" binding="tns:ReturnTypePortBinding">
<soap:address location="http://localhost:7101/Examples2-Examples2-context-root/ReturnTypePort"/>
</port>
</service>
</definitions>
@vanto Is there a way to assign an array from input variable to invoke_input variable?The problem is there are multiple inputs in my web service so i am not able to copy the wrapping element in input variable to wrapping variable in invoke variable.Will copy the snippet of the code here :
<assign name="Assign1">
<copy>
<from variable="inputVariable" part="payload"
query="/ns2:process/ns2:dsaName"/>
<to variable="Invoke1_processList_InputVariable"
part="parameters" query="/ns1:processList/dsaName"/>
</copy>
<copy>
<from variable="inputVariable" part="payload"
query="/ns2:process/ns2:linesOfData"/>
<to variable="Invoke1_processList_InputVariable"
part="parameters" query="/ns1:processList/linesOfData"/>
</copy>
<copy>
<from variable="inputVariable" part="payload"
query="/ns2:process/ns2:description"/>
<to variable="Invoke1_processList_InputVariable"
part="parameters" query="/ns1:processList/description"/>
</copy>
<copy>
<from variable="inputVariable" part="payload"
query="/ns2:process/ns2:application"/>
<to variable="Invoke1_processList_InputVariable"
part="parameters" query="/ns1:processList/application"/>
</copy>
</assign>
The problem is only one is of list type all others are of string type.The XML for this is:
<element name="process">
<complexType>
<sequence>
<element name="dsaName" type="string" minOccurs="0"/>
<element name="linesOfData" type="string" minOccurs="0" maxOccurs="unbounded"/>
<element name="description" type="string" minOccurs="0"/>
</sequence>
</complexType>
</element>
<element name="processResponse">
<complexType>
<sequence>
<element name="result" type="string" minOccurs="0" maxOccurs="unbounded"/>
</sequence>
</complexType>
</element>
</schema>
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from-spec 和 to-spec 不得选择多个元素或属性。在您的情况下,它似乎选择变量部分中的所有
元素(即数组的项目)。尝试复制包装项目的元素(即 ns1:displayResponse 元素)并将该元素复制到 ns2:processResponse(to 变量中的包装元素)。由于源元素和目标元素似乎位于不同的命名空间中并且具有不同的类型,因此您可能需要通过 XSLT 脚本(使用
doXSLTransform
)运行它,以将其从源模式转换为目标模式。A from-spec and to-spec must not select more than one element or attribute. In your case it appears to select all
<return>
elements in your variable's part (i.e. the items of the array). Try to copy the element that wraps the items (i.e. the ns1:displayResponse element) and copy this element to ns2:processResponse (the wrapping element in the to-variable).Since both source and target elements seem to be in different namespaces and are of different types, you probably need to run it through an XSLT script (using
doXSLTransform
) to translate it from the source schema to the target schema.