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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Show better error message when Model class isn't abstract","articleBody":"**Describe the Bug**\r\nWhen you extend the ORM Model to your own Model and forget to set it to abstract, you get an Exception saying\r\n```\r\nException in thread \"main\" java.lang.NullPointerException: Cannot invoke \"java.lang.reflect.Field.getType()\" because the return value of \"org.javawebstack.orm.TableInfo.getField(String)\" is null\r\n\tat org.javawebstack.orm.TableInfo.getIdType(TableInfo.java:282)\r\n\tat org.javawebstack.orm.TableInfo.analyzeTable(TableInfo.java:95)\r\n\tat org.javawebstack.orm.TableInfo.constructInfo(TableInfo.java:61)\r\n\tat org.javawebstack.orm.TableInfo.\u003cinit\u003e(TableInfo.java:56)\r\n\tat org.javawebstack.orm.Repo.\u003cinit\u003e(Repo.java:35)\r\n\tat org.javawebstack.orm.ORM.register(ORM.java:25)\r\n\tat org.javawebstack.orm.ORM.register(ORM.java:37)\r\n\r\n```\r\n**To Reproduce**\r\nSteps to reproduce the behavior:\r\n1. Forget to set your model class to abstract\r\n\r\n**Expected behavior**\r\nMaybe show some better error message which indicates that your base model isn't abstract yet.\r\n\r\n**Environment Information:**\r\n - Java Language Level 21\r\n- ORM Version            1.0.3-SNAPSHOT\r\n\r\n","author":{"url":"https://github.com/maherp1","@type":"Person","name":"maherp1"},"datePublished":"2024-05-27T18:29:24.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/56/orm/issues/56"}