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ptc-63285701-Visitor
1-Visitor
September 10, 2014
Solved

getting class cast Exception when casting WTPartMaster type of Object to WTPart

  • September 10, 2014
  • 2 replies
  • 2401 views

Is there any way to get WTPart type Object from WTPartMaster like casting or any other method?

    Best answer by VasiliyRepecki

    QueryResult linksQueryResult = VersionControlHelper.service.allVersionsOf(wtPartMaster);

    WTPart wtPart = null;

    boolean latestIteration = false;

    while ((linksQueryResult.hasMoreElements()) && (!latestIteration))

    {

    WTPart tempPart = (WTPart)linksQueryResult.nextElement();

    latestIteration = tempPart.isLatestIteration();

    if (latestIteration)

    {

    wtPart = tempPart;

    }

    }

    2 replies

    VasiliyRepecki1-VisitorAnswer
    1-Visitor
    September 10, 2014

    QueryResult linksQueryResult = VersionControlHelper.service.allVersionsOf(wtPartMaster);

    WTPart wtPart = null;

    boolean latestIteration = false;

    while ((linksQueryResult.hasMoreElements()) && (!latestIteration))

    {

    WTPart tempPart = (WTPart)linksQueryResult.nextElement();

    latestIteration = tempPart.isLatestIteration();

    if (latestIteration)

    {

    wtPart = tempPart;

    }

    }

      AL_ANDERSON12-Amethyst
      12-Amethyst
      September 10, 2014

      You cannot cast a WTPartMater into a WTPart because they are entirely different classes that are not related in a java class parent-child relationship. However, there are a lot of helper APIs to use in

      wt.vc.VersionControlHelper

      and

      wt.vc.VersionControlService

      You access the service methods using wt.vc.VersionControlHelper.service.xxxxx()

      For example, one method among the many to look at is this one.

      wt.vc.VersionControlHelper.service.allVersionsFrom(Versioned version), defined from the API, below.

      QueryResult allVersionsFrom(Versioned version) throws WTException, PersistenceException
      Finds all of the versions of a master from the first one created to the given version. The result is an ordered list of versions (i.e., latest iterations) from the given iteration to the first one created. For example, if version C is given, the list returned is C, B, A.

      Supported API: true

      Parameters:
      version -
      Returns:
      QueryResult
      Throws:
      WTException
      PersistenceException
      Terms & ConditionsAccessibility statement