{"record":{"id":"edfa7fbefb075803","repo":"hibernate/hibernate-orm","slug":"cannot-treat-resultsetoutput-as-updatecountoutput","errorCode":null,"errorMessage":"Cannot treat ResultSetOutput as UpdateCountOutput","messagePattern":"Cannot treat ResultSetOutput as UpdateCountOutput","errorType":"exception","errorClass":"IllegalOutputTypeException","httpStatus":null,"severity":"error","filePath":"hibernate-core/src/main/java/org/hibernate/procedure/ResultSetOutput.java","lineNumber":26,"sourceCode":"\n/// Models a [java.sql.ResultSet] as an Output.\n///\n/// @author Steve Ebersole\npublic interface ResultSetOutput<T> extends Output {\n\t/// Consume the underlying [java.sql.ResultSet] and return the resulting List.\n\tList<T> getResultList();\n\n\t/// Consume the underlying [java.sql.ResultSet] with the expectation that there is just a single result.\n\tObject getSingleResult();\n\n\t@Override\n\tdefault ResultSetOutput<?> asResultSetOutput() {\n\t\treturn this;\n\t}\n\n\t@Override\n\tdefault UpdateCountOutput asUpdateCountOutput() {\n\t\tthrow new IllegalOutputTypeException( \"Cannot treat ResultSetOutput as UpdateCountOutput\" );\n\t}\n}\n","sourceCodeStart":8,"sourceCodeEnd":29,"githubUrl":"https://github.com/hibernate/hibernate-orm/blob/fad1729dce015f908198d57a8d80274a30f905a5/hibernate-core/src/main/java/org/hibernate/procedure/ResultSetOutput.java#L8-L29","documentation":"Error \"Cannot treat ResultSetOutput as UpdateCountOutput\" thrown in hibernate/hibernate-orm.","triggerScenarios":"An API operation is invoked on an object that does not support it.","commonSituations":"Using query/procedure/proxy APIs beyond their supported feature set (e.g. scrolling, locking, unwrapping a procedure call).","solutions":["Check the output type before casting: use outputs.getCurrent() instanceof UpdateCountOutput.","Consume result-set outputs before expecting an update count."],"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"}