Re: Way to optimize this?

Eric Sosman <esosman@ieee-dot-org.invalid>
Fri, 06 Nov 2009 23:19:39 -0500
Jim Janney wrote:

laredotornado <> writes:


I'm using Java 1.5. My code checker (PMD plug-in, part of Eclipse
Galileo), is complaining about the line "Integer fileCount = null;" in
the following ...

  public Integer getVendorRequestFileDigestCount(final
YouthfulDriverVendor vendor,
                                                 final String
requestFileDigest) {
    Integer fileCount = null;
    final Session session = sessionFactory.openSession();
    try {
      fileCount = (Integer)
        session. createCriteria(AddressRequestFile.class)
        .add(Restrictions.eq("requestFileDigest", requestFileDigest))
        .add(Restrictions.eq("vendor", vendor))
        .add("processingResult", 0))
    } finally {
    return fileCount;

with the complaint, "Found 'DD' -- anomaly for 'fileCount', lines
123-126". Evidently, it doesn't like the fact that the value of the
variable "fileCount" changes. But I don't know how to rewrite this
code block to satisfy the code checker. Do you?

Thanks, - Dave

The complaint is simply that you're initializing a variable to a value
that is never used, just as if you had written

   int i = 4;
   i = 15;

     No, the initial value *is* used, if anything in that
chain of method calls throws an exception.

The minimal fix is to remove the useless initialization for fileCount: replace
     Integer fileCount = null;
     Integer fileCount;

     I think that would produce a compile error. (But I've
already embarrassed myself once on a similar point in this
thread, so don't take my word for it ...)

Eric Sosman

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