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https://issues.apache.org/jira/browse/LUCENE-4218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13447850#comment-13447850
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Robert Muir commented on LUCENE-4218:
-------------------------------------

The next question: should the fix really be in Document.java or Field.java:

In 3.x, the stringValue() of a numeric field returned its string representation.
in trunk/4.x, this isnt true: and it makes some things confusing, like the 
javadocs
of stringValue itself (clearly bogus)

{code}
  /**
   * The value of the field as a String, or null. If null, the Reader value or
   * binary value is used. Exactly one of stringValue(), readerValue(), and
   * getBinaryValue() must be set.
   */
  public String stringValue() {
    return fieldsData instanceof String ? (String) fieldsData : null;
  }
{code}


                
> contrary to documentation Document.get(field) on numeric field returns null
> ---------------------------------------------------------------------------
>
>                 Key: LUCENE-4218
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4218
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: core/search
>    Affects Versions: 4.0-ALPHA
>         Environment: Darwin e4-ce-8f-0f-c2-b0.dummy.porta.siemens.net 10.8.0 
> Darwin Kernel Version 10.8.0: Tue Jun  7 16:32:41 PDT 2011; 
> root:xnu-1504.15.3~1/RELEASE_X86_64 x86_64
>            Reporter: Jamie
>            Assignee: Robert Muir
>            Priority: Critical
>              Labels: Document
>             Fix For: 4.0
>
>         Attachments: LUCENE-4218.patch
>
>
> A call to Numeric num = indexableField.numericValue() comes up with a correct 
> value, whereas Document.get(field) yields null.

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