{"record":{"id":"10f0b21ead2ada9c","repo":"flowable/flowable-engine","slug":"namelike-is-null-10f0b2","errorCode":null,"errorMessage":"nameLike is null","messagePattern":"nameLike is null","errorType":"validation","errorClass":"ActivitiIllegalArgumentException","httpStatus":null,"severity":"error","filePath":"modules/flowable5-engine/src/main/java/org/activiti/engine/impl/ModelQueryImpl.java","lineNumber":103,"sourceCode":"            throw new ActivitiIllegalArgumentException(\"categoryNotEquals is null\");\n        }\n        this.categoryNotEquals = categoryNotEquals;\n        return this;\n    }\n\n    @Override\n    public ModelQueryImpl modelName(String name) {\n        if (name == null) {\n            throw new ActivitiIllegalArgumentException(\"name is null\");\n        }\n        this.name = name;\n        return this;\n    }\n\n    @Override\n    public ModelQueryImpl modelNameLike(String nameLike) {\n        if (nameLike == null) {\n            throw new ActivitiIllegalArgumentException(\"nameLike is null\");\n        }\n        this.nameLike = nameLike;\n        return this;\n    }\n\n    @Override\n    public ModelQuery modelKey(String key) {\n        if (key == null) {\n            throw new ActivitiIllegalArgumentException(\"key is null\");\n        }\n        this.key = key;\n        return this;\n    }\n\n    @Override\n    public ModelQueryImpl modelVersion(Integer version) {\n        if (version == null) {\n            throw new ActivitiIllegalArgumentException(\"version is null\");","sourceCodeStart":85,"sourceCodeEnd":121,"githubUrl":"https://github.com/flowable/flowable-engine/blob/d6d39ce1c69ff244f2d9dc6af756a9b95e865586/modules/flowable5-engine/src/main/java/org/activiti/engine/impl/ModelQueryImpl.java#L85-L121","documentation":"Fluent-setter validation in flowable5 ModelQueryImpl.modelNameLike: a null LIKE pattern was passed to the Activiti 5 compatibility query and is rejected before SQL generation.","triggerScenarios":"repositoryService.createModelQuery().modelNameLike(pattern) with a null pattern, e.g. an unset search input or uninitialized wildcard variable.","commonSituations":"Client-side search box left empty and bound to null; dynamic filter builder adding the like clause unconditionally; migration from empty-string to null semantics.","solutions":["Validate the search pattern for null/blank before calling","Wrap the pattern with '%' wildcards only after the null check","Skip the filter when no search term is present"],"exampleFix":"// before\nquery.modelNameLike(term);\n// after\nif (term != null && !term.trim().isEmpty()) {\n    query.modelNameLike(\"%\" + term.trim() + \"%\");\n}","handlingStrategy":"validation","validationCode":"if (nameLike != null && !nameLike.trim().isEmpty()) { query.modelNameLike(\"%\" + nameLike.trim() + \"%\"); }","typeGuard":"boolean hasText(String s) { return s != null && !s.trim().isEmpty(); }","tryCatchPattern":"try {\n    query.modelNameLike(pattern);\n} catch (ActivitiIllegalArgumentException e) {\n    // fall back to unfiltered list\n}","preventionTips":["Blank out empty search terms before building LIKE patterns","Centralize like-filter construction with wildcard handling and null checks","Escape '%' and '_' from user input"],"tags":["java","flowable","model-query","null-check","like-filter"],"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"}