{"record":{"id":"27858b1856b3b1b8","repo":"hibernate/hibernate-orm","slug":"illegal-discriminator-value","errorCode":null,"errorMessage":"Illegal discriminator value: {}","messagePattern":"Illegal discriminator value: (.+?)","errorType":"exception","errorClass":"IllegalArgumentException","httpStatus":null,"severity":"error","filePath":"hibernate-core/src/main/java/org/hibernate/metamodel/mapping/internal/UnifiedAnyDiscriminatorConverter.java","lineNumber":206,"sourceCode":"\tprotected String getEntityName(O domainForm) {\n\t\tfinal Class<?> entityClass;\n\t\tif ( domainForm == null ) {\n\t\t\treturn null;\n\t\t}\n\t\telse if ( domainForm instanceof Class<?> clazz ) {\n\t\t\tentityClass = clazz;\n\t\t}\n\t\telse if ( domainForm instanceof String name ) {\n\t\t\treturn name;\n\t\t}\n\t\telse {\n\t\t\tentityClass = unproxy( domainForm ).getClass();\n\t\t}\n\t\ttry {\n\t\t\treturn mappingMetamodel.getEntityDescriptor( entityClass ).getEntityName();\n\t\t}\n\t\tcatch (IllegalArgumentException iae) {\n\t\t\tthrow new IllegalArgumentException( \"Illegal discriminator value: \" + domainForm );\n\t\t}\n\t}\n}\n","sourceCodeStart":188,"sourceCodeEnd":210,"githubUrl":"https://github.com/hibernate/hibernate-orm/blob/fad1729dce015f908198d57a8d80274a30f905a5/hibernate-core/src/main/java/org/hibernate/metamodel/mapping/internal/UnifiedAnyDiscriminatorConverter.java#L188-L210","documentation":"Error \"Illegal discriminator value: {}\" thrown in hibernate/hibernate-orm.","triggerScenarios":"Thrown when a value supplied as an @Any discriminator is not among the legal mapped discriminator values.","commonSituations":"See trigger scenarios.","solutions":["Assign the any-association only instances of entities registered in its discriminator mapping."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"fad1729dce015f908198d57a8d80274a30f905a5","analyzedAt":"2026-08-22T04:13:57.527Z","schemaVersion":2},"datasetVersion":"2026-08-22T09:17:25.309Z"}