{"record":{"id":"9652523bfb5c58f6","repo":"flowable/flowable-engine","slug":"task-descriptionlike-is-null-965252","errorCode":null,"errorMessage":"Task descriptionlike is null","messagePattern":"Task descriptionlike is null","errorType":"validation","errorClass":"ActivitiIllegalArgumentException","httpStatus":null,"severity":"error","filePath":"modules/flowable5-engine/src/main/java/org/activiti/engine/impl/TaskQueryImpl.java","lineNumber":274,"sourceCode":"\n    @Override\n    public TaskQueryImpl taskDescription(String description) {\n        if (description == null) {\n            throw new ActivitiIllegalArgumentException(\"Description is null\");\n        }\n\n        if (orActive) {\n            currentOrQueryObject.description = description;\n        } else {\n            this.description = description;\n        }\n        return this;\n    }\n\n    @Override\n    public TaskQuery taskDescriptionLike(String descriptionLike) {\n        if (descriptionLike == null) {\n            throw new ActivitiIllegalArgumentException(\"Task descriptionlike is null\");\n        }\n        if (orActive) {\n            currentOrQueryObject.descriptionLike = descriptionLike;\n        } else {\n            this.descriptionLike = descriptionLike;\n        }\n        return this;\n    }\n\n    @Override\n    public TaskQuery taskDescriptionLikeIgnoreCase(String descriptionLikeIgnoreCase) {\n        if (descriptionLikeIgnoreCase == null) {\n            throw new ActivitiIllegalArgumentException(\"Task descriptionLikeIgnoreCase is null\");\n        }\n        if (orActive) {\n            currentOrQueryObject.descriptionLikeIgnoreCase = descriptionLikeIgnoreCase.toLowerCase();\n        } else {\n            this.descriptionLikeIgnoreCase = descriptionLikeIgnoreCase.toLowerCase();","sourceCodeStart":256,"sourceCodeEnd":292,"githubUrl":"https://github.com/flowable/flowable-engine/blob/d6d39ce1c69ff244f2d9dc6af756a9b95e865586/modules/flowable5-engine/src/main/java/org/activiti/engine/impl/TaskQueryImpl.java#L256-L292","documentation":"Fluent-setter validation in flowable5 TaskQueryImpl.taskDescriptionLike: a null LIKE pattern was passed for the task-description filter and rejected.","triggerScenarios":"Calling taskDescriptionLike(null) with a pattern sourced from an unset request field or variable.","commonSituations":"Advanced-search endpoints where the descriptionLike parameter is optional and passed through unchecked; map lookups returning null for missing keys; Optional.orElse(null) usage.","solutions":["Apply the filter conditionally only when the pattern is non-null","Trim/coerce empty strings to no-filter at the boundary instead of null","Centralize query building in a helper that handles optional criteria uniformly"],"exampleFix":"// before\nquery.taskDescriptionLike(criteria.getDescriptionLike()); // may be null\n// after\nString descriptionLike = criteria.getDescriptionLike();\nif (descriptionLike != null) {\n    query.taskDescriptionLike(descriptionLike);\n}","handlingStrategy":"type-guard","validationCode":"if (descriptionLike == null) { /* skip filter */ }","typeGuard":"void addDescriptionLike(TaskQuery query, String pattern) {\n    if (pattern != null && !pattern.isEmpty()) {\n        query.taskDescriptionLike(pattern);\n    }\n}","tryCatchPattern":"try {\n    query.taskDescriptionLike(pattern);\n} catch (org.activiti.engine.ActivitiIllegalArgumentException e) {\n    // no pattern supplied: build query without description filter\n}","preventionTips":["Apply optional criteria only when non-null","Centralize null-to-no-filter normalization","Document which query methods reject null"],"tags":["activiti","task-query","null-argument","validation"],"backgroundTag":"null-argument","analyzedSha":"d6d39ce1c69ff244f2d9dc6af756a9b95e865586","analyzedAt":"2026-09-11T06:41:19.413Z","contentChangedAt":"2026-09-11T06:41:19.413Z","schemaVersion":2},"datasetVersion":"2026-09-18T16:30:33.424Z"}