Get process definition using camunda library is failing

Camunda 7 Topics Discussion & Questions
1

Caused by: org.springframework.http.converter.HttpMessageConversionException: Type definition error: [simple type, class org.camunda.bpm.engine.impl.pvm.process.ProcessDefinitionImpl]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Direct self-reference leading to cycle (through reference chain: java.util.ArrayList[0]->org.camunda.bpm.engine.impl.persistence.entity.ProcessDefinitionEntity[“processDefinition”])
at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.writeInternal(AbstractJackson2HttpMessageConverter.java:293) ~[spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.http.converter.AbstractGenericHttpMessageConverter.write(AbstractGenericHttpMessageConverter.java:103) ~[spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:290) ~[spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.HttpEntityMethodProcessor.handleReturnValue(HttpEntityMethodProcessor.java:225) ~[spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:82) ~[spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:122) ~[spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:892) ~[spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797) ~[spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE]

2

below is the code

repositoryService.createProcessDefinitionQuery().orderByProcessDefinitionKey().asc().list();

3

Type definition error: [simple type, class org.camunda.bpm.engine.impl.pvm.process.ProcessDefinitionImpl]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Direct self-reference leading to cycle (through reference chain: java.util.ArrayList[0]->org.camunda.bpm.engine.impl.persistence.entity.ProcessDefinitionEntity[“processDefinition”])

4 

    public List<ProcessDefinitionDto> getAllProcessList() {
        List<ProcessDefinition> processDefinitions = repositoryService.createProcessDefinitionQuery()
                .list();
        List<ProcessDefinitionDto> definitions = new ArrayList<>();
        for (ProcessDefinition definition : processDefinitions) {
            ProcessDefinitionDto def = ProcessDefinitionDto.fromProcessDefinition(definition);
            definitions.add(def);
        }
        return definitions;
    }
5