EOS Platform7.5产品，将有多个返回值的逻辑流封装成webservice，重启后，调用服务报错：Caused by: org.apache.tuscany.sca.databinding.TransformationException: ErrCode: 20200005

【问题描述】

EOS Platform7.5产品，将有多个返回值的逻辑流封装成webservice，重启server后，使用webservice调用图元访问服务报错：

[default][2017-06-01 18:10:19,601][ERROR][com.primeton.ext.sca.serialize.DataTransformer:448] marshal java object to OMElement  error on newbiz in service new61Service
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
 at java.util.ArrayList.RangeCheck(ArrayList.java:547)
 at java.util.ArrayList.get(ArrayList.java:322)
 at java.util.Collections$UnmodifiableList.get(Collections.java:1152)
 at com.primeton.ext.sca.serialize.DataTransformer.marshallOMElementServerSend(DataTransformer.java:425)
 at com.primeton.sca.xmltransformer.OMElementTransformer.transforOutput(OMElementTransformer.java:119)
 at com.primeton.sca.transformer.Output2OutputTransformer.transform(Output2OutputTransformer.java:231)
 at org.apache.tuscany.sca.databinding.impl.MediatorImpl.mediate(MediatorImpl.java:81)
 at org.apache.tuscany.sca.core.databinding.wire.DataTransformationInterceptor.transform(DataTransformationInterceptor.java:200)
 at org.apache.tuscany.sca.core.databinding.wire.DataTransformationInterceptor.invoke(DataTransformationInterceptor.java:183)
 at org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:110)

......

Caused by: org.apache.tuscany.sca.databinding.TransformationException: ErrCode: 20200005
Message: NULL
 at com.primeton.sca.transformer.Output2OutputTransformer.transform(Output2OutputTransformer.java:280)
 at org.apache.tuscany.sca.databinding.impl.MediatorImpl.mediate(MediatorImpl.java:81)
 at org.apache.tuscany.sca.core.databinding.wire.DataTransformationInterceptor.transform(DataTransformationInterceptor.java:200)
 at org.apache.tuscany.sca.core.databinding.wire.DataTransformationInterceptor.invoke(DataTransformationInterceptor.java:183)
 at org.apache.tuscany.sca.core.invocation.RuntimeWireInvoker.invoke(RuntimeWireInvoker.java:110)
 ... 33 more

【解答】

产品bug，已提交bug，期望在后续版本中修复，目前建议避免在逻辑构建中有多个返回值，可将其封装为一个复杂对象返回