通过OData -生成器-cli创建odata客户端时出现异常

Question

我想通过odata-generator-cli 3.35.0在Java语言中创建一个OData客户机。

使用以下Service from Business Hub的.edmx和swagger文件。

正在生成OData客户端，但出现异常：

[main] INFO com.sap.cloud.sdk.datamodel.odata.generator.ODataToVdmGenerator - Processing 1 OData service...
[main] INFO com.sap.cloud.sdk.datamodel.odata.generator.ODataToVdmGenerator - Processing OData service 'Integration Content' at /cpi/api/v1
[main] INFO com.sap.cloud.sdk.datamodel.odata.generator.NamespaceClassGenerator -   Found entity type IntegrationDesigntimeArtifact from set IntegrationDesigntimeArtifacts
[main] INFO com.sap.cloud.sdk.datamodel.odata.generator.NamespaceClassGenerator -   Found entity type RuntimeArtifactErrorInformation from set RuntimeArtifactErrorInformations
[main] INFO com.sap.cloud.sdk.datamodel.odata.generator.NamespaceClassGenerator -   Found entity type Configuration from set Configurations
[main] INFO com.sap.cloud.sdk.datamodel.odata.generator.NamespaceClassGenerator -   Found entity type Resource from set Resources
[main] INFO com.sap.cloud.sdk.datamodel.odata.generator.NamespaceClassGenerator -   Found entity type IntegrationRuntimeArtifact from set IntegrationRuntimeArtifacts
[main] INFO com.sap.cloud.sdk.datamodel.odata.generator.NamingContext - Found more than one occurrence of the Java identifier type. The new identifier has been renamed to type_2
[main] INFO com.sap.cloud.sdk.datamodel.odata.generator.NamespaceClassGenerator -   Found entity type IntegrationPackage from set IntegrationPackages
[main] INFO com.sap.cloud.sdk.datamodel.odata.generator.NamespaceClassGenerator -   Found entity type ServiceEndpoint from set ServiceEndpoints
[main] INFO com.sap.cloud.sdk.datamodel.odata.generator.NamespaceClassGenerator -   Found entity type EntryPoint from set EntryPoints
[main] INFO com.sap.cloud.sdk.datamodel.odata.generator.NamingContext - Found more than one occurrence of the Java identifier type. The new identifier has been renamed to type_2
[main] INFO com.sap.cloud.sdk.datamodel.odata.generator.NamespaceClassGenerator -   Found entity type Definition from set APIDefinitions
[main] INFO com.sap.cloud.sdk.datamodel.odata.generator.NamespaceClassGenerator -   Found entity type ValueMappingDesigntimeArtifact from set ValueMappingDesigntimeArtifacts
[main] INFO com.sap.cloud.sdk.datamodel.odata.generator.NamespaceClassGenerator -   Found entity type ValMapSchema from set ValMapSchema
[main] WARN com.sap.cloud.sdk.datamodel.odata.generator.ODataToVdmGenerator - Error in file IntegrationContent; unable to generate all VDM classes.
com.sap.cloud.sdk.datamodel.odata.generator.ODataGeneratorReadException: org.apache.olingo.odata2.api.edm.EdmException: An exception occurred.
        at com.sap.cloud.sdk.datamodel.odata.generator.EdmService$TypedAdapter.getType(EdmService.java:317)
        at com.sap.cloud.sdk.datamodel.odata.generator.NamespaceClassGenerator.processNavigationProperties(NamespaceClassGenerator.java:1098)
        at com.sap.cloud.sdk.datamodel.odata.generator.NamespaceClassGenerator.processEntitySet(NamespaceClassGenerator.java:891)
        at com.sap.cloud.sdk.datamodel.odata.generator.EntitySetProcessor.processEntitySets(EntitySetProcessor.java:74)
        at com.sap.cloud.sdk.datamodel.odata.generator.CodeModelClassGenerator.processService(CodeModelClassGenerator.java:102)
        at com.sap.cloud.sdk.datamodel.odata.generator.ODataToVdmGenerator.createCodeModelForServices(ODataToVdmGenerator.java:133)
        at com.sap.cloud.sdk.datamodel.odata.generator.ODataToVdmGenerator.generate(ODataToVdmGenerator.java:98)
        at com.sap.cloud.sdk.datamodel.odata.generator.DataModelGenerator.execute(DataModelGenerator.java:797)
        at com.sap.cloud.sdk.datamodel.odata.generator.DataModelGeneratorCli.run(DataModelGeneratorCli.java:206)
        at com.sap.cloud.sdk.datamodel.odata.generator.DataModelGeneratorCli.main(DataModelGeneratorCli.java:188)
Caused by: org.apache.olingo.odata2.api.edm.EdmException: An exception occurred.
        at org.apache.olingo.odata2.core.edm.provider.EdmAssociationEndImplProv.getEntityType(EdmAssociationEndImplProv.java:51)
        at org.apache.olingo.odata2.core.edm.provider.EdmNavigationPropertyImplProv.getType(EdmNavigationPropertyImplProv.java:44)
        at com.sap.cloud.sdk.datamodel.odata.generator.EdmService$TypedAdapter.getType(EdmService.java:314)
        ... 9 more
[main] INFO com.sap.cloud.sdk.datamodel.odata.generator.ODataToVdmGenerator - Generating Java classes to C:\Users\W4ff3l\Downloads\odata-gen\trg
[main] INFO com.sap.cloud.sdk.datamodel.odata.generator.DataModelGeneratorCli - ------------------------------------------------------------
[main] WARN com.sap.cloud.sdk.datamodel.odata.generator.DataModelGeneratorCli -  Generator SUCCEEDED but had the following 1 warning messages:
[main] WARN com.sap.cloud.sdk.datamodel.odata.generator.DataModelGeneratorCli - Error in file IntegrationContent; unable to generate all VDM classes.
[main] INFO com.sap.cloud.sdk.datamodel.odata.generator.DataModelGeneratorCli - ------------------------------------------------------------

似乎导航有问题，但我不知道如何调试或解决这个问题。

要复制该问题，请从Business Hub下载.edmx和.json，并在生成器中使用它们。

Answer 1

缺失实体类型的官方修复目前正在我们的发布管道中，从现在开始大约4周内，大概可以通过SAP API Business Hub获得。

同时，您已经可以使用SAP Integration Suite (以前称为SAP Cloud Platform Integration，CPI)检索最新的服务元数据，方法是导航到已部署的服务并与/api/v1/$metadata交换API路径。

例如，假设您的服务在https://<YourAccountShortName>-tmn.<SSLHost>.<Landscapehost>上运行，只需导航到https://<YourAccountShortName>-tmn.<SSLHost>.<Landscapehost>/api/v1/$metadata。

使用显示的元数据和来自SAP API Business Hub的Swagger定义来生成您的OData客户机。

Answer 2

该SCP服务的元数据中存在问题，缺少实体类型。如果可以从API Business Hub下载更正后的元数据，我将更新此答案。

Answer 3

不，您没有错过任何配置。事实上，目前只有OData v4服务支持这一点，这是云开发工具包中OData v2的一个功能差距。但是您可以利用我们的通用OData客户端来实现这一点。

以下是带有解释的示例代码：

ODataEntityKey entityKey = new ODataEntityKey(ODataProtocol.V2);
entityKey.addKeyProperty("keyId", "keyValue");

// creating resource path
final ODataResourcePath resourcePath = ODataResourcePath.of("IntegrationPackages", entityKey)
        .addSegment("IntegrationDesigntimeArtifacts"); // here "IntegrationPackages" is the entityCollection

// creating read request
ODataRequestRead request = new ODataRequestRead(Service.DEFAULT_SERVICE_PATH, resourcePath,"encodedQueryStringIfAny", ODataProtocol.V2);

//executing
final ODataRequestResultGeneric result = request.execute(HttpClientAccessor.getHttpClient(destination));

//response parsing
result.asList(IntegrationDesigntimeArtifact.class);