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From "Chuong Pham (JIRA)" <>
Subject [jira] [Created] (OPENJPA-1976) EntityManager.find method cause errors
Date Sat, 09 Apr 2011 17:23:06 GMT
EntityManager.find method cause errors

                 Key: OPENJPA-1976
             Project: OpenJPA
          Issue Type: Bug
          Components: jpa
    Affects Versions: 2.1.0
         Environment: Glassfish 3.1, JSF 2.1.0, Apache OpenJPA 2.1.0, MySQL 5.5.10, Eclipse
Helios IDE, Windows XP Service Pack 3
            Reporter: Chuong Pham

Scenario 1: The EntityManager.find method is unable to pass a String value as its second parameter
and caused the following error:

<openjpa-2.1.0-r422266:1071316 nonfatal user error> org.apache.openjpa.persistence.ArgumentException:
The given value "214736890D96ED598E1D3050F1F025A7" cannot be converted into an identity for
"com.ckd.model.BookModel".  The value is the wrong type (java.lang.String).

java.lang.NumberFormatException: For input string: "214736890D96ED598E1D3050F1F025A7"

It seems from the errors above that the EntityManager.find method will only accept a numeric
value as its second parameter.

Scenario 2: The EntityManager.find method is unable to pass a Long value and caused the following

<openjpa-2.1.0-r422266:1071316 fatal user error> org.apache.openjpa.persistence.ArgumentException:
An error occurred while processing registered class "class com.ckd.model.BookModel".

java.lang.IllegalStateException: WEB9031: WebappClassLoader unable to load resource [org.apache.openjpa.util.LongId],
because it has not yet been started, or was already stopped

The columns used for testing are from a MySQL 5.x table and have the following definitions:


The value of HASHID is used to test Scenario 1; while the value of ID is used to test Scenario

Conclusion: The above scenarios show that the EntityManager.find method is currently unusable/buggy
and needs to be investigated for the next release.

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