zur
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Swagger OpenAPI Code Gen "oneOf" : How to generate correct class file?
TLDR: Swagger offers a feature named 'oneOf'. The resulting java classes created do not seem to be correct. Details: I am creating the spring/java server side rest api code. And when I send a request. The request object is not parsed correctly. The following error is printed in the console. JSON parse error: Could not resolve subtype of [simple type, class com.model.Issuer]: missing type id property 'type' (for POJO property 'issuer'); nested exception is com.fasterxml.jackson.databind.exc.InvalidTypeIdException: Could not resolve subtype of [simple type, class com.Issuer]: missing type id property 'type' (for POJO property 'issuer')\n at [Source: (PushbackInputStream); line: 3, column: 15] (through reference chain: com.IssueCredentialRequest[\"credential\"]->com.Credential[\"issuer\"]) The reason seem to be that the generated class does not have subtypes: package com.sphereon.vdp.vc.service.model; import com.fasterxml.jackson.annotation.JsonSubTypes; import com.fasterxml.jackson.annotation.JsonTypeInfo; @JsonTypeInfo( use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "type") @JsonSubTypes({ }) public interface OneOfIssuer { } There is another class which is generated correctly package com.sphereon.vdp.vc.service.model; import com.fasterxml.jackson.annotation.JsonSubTypes; import com.fasterxml.jackson.annotation.JsonTypeInfo; @JsonTypeInfo( use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "type") @JsonSubTypes({ @JsonSubTypes.Type(value = VerifyPresentationRequest.class, name = "VerifyPresentationRequest"), @JsonSubTypes.Type(value = ProoflessVerifyPresentationRequest.class, name = "ProoflessVerifyPresentationRequest") }) public interface OneOfpresentationsVerifyBody { } Can someone point to what am I missing? <plugin> <groupId>io.swagger.codegen.v3</groupId> <artifactId>swagger-codegen-maven-plugin</artifactId> <version>3.0.33</version> <dependencies> <dependency> <groupId>com.github.jknack</groupId> <artifactId>handlebars</artifactId> <version>4.3.0</version> </dependency> </dependencies> <executions> <execution> <id>vc-rest-api-issuer-source-generation</id> <goals> <goal>generate</goal> </goals> <phase>generate-sources</phase> <configuration> <inputSpec>${pom.basedir}/specifications/issuer.yml</inputSpec> <language>spring</language> <apiPackage>com.company.vdp.vc.service.api</apiPackage> <modelPackage>com.company.vdp.vc.service.model</modelPackage> <artifactVersion>${project.version}</artifactVersion> <generateModels>true</generateModels> <generateApis>true</generateApis> <generateModelDocumentation>true</generateModelDocumentation> <generateSupportingFiles>true</generateSupportingFiles> <verbose>${openapi-codegen-verbose}</verbose> <output>${project.basedir}/target/generated-sources/java/api</output> <ignoreFileOverride>${project.basedir}/target/generated-sources/java/api/.swagger-codegen-ignore</ignoreFileOverride> <configOptions> <delegatePattern>true</delegatePattern> <dateLibrary>java8</dateLibrary> <useTags>true</useTags> </configOptions> </configuration> </execution> <execution> <id>vc-rest-api-verifier-source-generation</id> <goals> <goal>generate</goal> </goals> <phase>generate-sources</phase> <configuration> <inputSpec>${pom.basedir}/specifications/verifier.yml</inputSpec> <language>spring</language> <apiPackage>com.company.vdp.vc.service.api</apiPackage> <modelPackage>com.company.vdp.vc.service.model</modelPackage> <artifactVersion>${project.version}</artifactVersion> <generateModels>true</generateModels> <generateApis>true</generateApis> <generateModelDocumentation>true</generateModelDocumentation> <generateSupportingFiles>true</generateSupportingFiles> <verbose>${openapi-codegen-verbose}</verbose> <output>${project.basedir}/target/generated-sources/java/api</output> <ignoreFileOverride>${project.basedir}/target/generated-sources/java/api/.swagger-codegen-ignore</ignoreFileOverride> <configOptions> <delegatePattern>true</delegatePattern> <dateLibrary>java8</dateLibrary> <useTags>true</useTags> </configOptions> </configuration> </execution> </executions> </plugin> Following is the spec file that I am using without editing. https://github.com/w3c-ccg/vc-api/blob/main/components/Issuer.yml https://github.com/w3c-ccg/vc-api/blob/main/verifier.yml https://github.com/w3c-ccg/vc-api/blob/main/components/Issuer.yml https://github.com/w3c-ccg/vc-api/blob/main/verifier.yml