Package org.apache.derby.iapi.sql.dictionary

Examples of org.apache.derby.iapi.sql.dictionary.GenericDescriptorList.elements()

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    long heapId = td.getHeapConglomerateId();
    lockTableForDDL(tc, heapId, true);

    /* Drop the triggers */
    GenericDescriptorList tdl = dd.getTriggerDescriptors(td);
    Enumeration descs = tdl.elements();
    while (descs.hasMoreElements())
    {
      TriggerDescriptor trd = (TriggerDescriptor) descs.nextElement();
            trd.drop(lcc);
    }
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    //Now go through each trigger on this table and see if the column
    //being dropped is part of it's trigger columns or trigger action
    //columns which are used through REFERENCING clause
    GenericDescriptorList tdl = dd.getTriggerDescriptors(td);
    Enumeration descs = tdl.elements();
    while (descs.hasMoreElements())
    {
      TriggerDescriptor trd = (TriggerDescriptor) descs.nextElement();
      //If we find that the trigger is dependent on the column being
      //dropped because column is part of trigger columns list, then
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        // We could not do this before the actual column drop, because the
        // rebind would have still found the column being dropped in the
        // table descriptor and hence use of such a column in the trigger
        // action rebind would not have been caught.
    GenericDescriptorList tdlAfterColumnDrop = dd.getTriggerDescriptors(td);
    Enumeration descsAfterColumnDrop = tdlAfterColumnDrop.elements();
    while (descsAfterColumnDrop.hasMoreElements())
    {
      TriggerDescriptor trd = (TriggerDescriptor) descsAfterColumnDrop.nextElement();
      dd.dropTriggerDescriptor(trd, tc);
     
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      }
    }

    //truncate is not allowed when there are enabled DELETE triggers
    GenericDescriptorList tdl = dd.getTriggerDescriptors(td);
    Enumeration descs = tdl.elements();
    while (descs.hasMoreElements())
    {
      TriggerDescriptor trd = (TriggerDescriptor) descs.nextElement();
      if (trd.listensForEvent(TriggerDescriptor.TRIGGER_EVENT_DELETE) &&
        trd.isEnabled())
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                lcc, columnDescriptor.getDefaultDescriptor(dd));
    }

    // need to deal with triggers if has referencedColumns
    GenericDescriptorList tdl = dd.getTriggerDescriptors(td);
    Enumeration descs = tdl.elements();
    while (descs.hasMoreElements())
    {
      TriggerDescriptor trd = (TriggerDescriptor) descs.nextElement();
      int[] referencedCols = trd.getReferencedCols();
      if (referencedCols == null)
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      }
    }

    //truncate is not allowed when there are enabled DELETE triggers
    GenericDescriptorList tdl = dd.getTriggerDescriptors(td);
    Enumeration descs = tdl.elements();
    while (descs.hasMoreElements())
    {
      TriggerDescriptor trd = (TriggerDescriptor) descs.nextElement();
      if (trd.listensForEvent(TriggerDescriptor.TRIGGER_EVENT_DELETE) &&
        trd.isEnabled())
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                lcc, columnDescriptor.getDefaultDescriptor(dd));
    }

    // need to deal with triggers if has referencedColumns
    GenericDescriptorList tdl = dd.getTriggerDescriptors(td);
    Enumeration descs = tdl.elements();
    while (descs.hasMoreElements())
    {
      TriggerDescriptor trd = (TriggerDescriptor) descs.nextElement();
      int[] referencedCols = trd.getReferencedCols();
      if (referencedCols == null)
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      }
    }

    //truncate is not allowed when there are enabled DELETE triggers
    GenericDescriptorList tdl = dd.getTriggerDescriptors(td);
    Enumeration descs = tdl.elements();
    while (descs.hasMoreElements())
    {
      TriggerDescriptor trd = (TriggerDescriptor) descs.nextElement();
      if (trd.listensForEvent(TriggerDescriptor.TRIGGER_EVENT_DELETE) &&
        trd.isEnabled())
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      dm.clearDependencies(lcc, defaultDesc);
    }

    // need to deal with triggers if has referencedColumns
    GenericDescriptorList tdl = dd.getTriggerDescriptors(td);
    Enumeration descs = tdl.elements();
    while (descs.hasMoreElements())
    {
      TriggerDescriptor trd = (TriggerDescriptor) descs.nextElement();
      int[] referencedCols = trd.getReferencedCols();
      if (referencedCols == null)
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      }
    }

    //truncate is not allowed when there are enabled DELETE triggers
    GenericDescriptorList tdl = dd.getTriggerDescriptors(td);
    Enumeration descs = tdl.elements();
    while (descs.hasMoreElements())
    {
      TriggerDescriptor trd = (TriggerDescriptor) descs.nextElement();
      if (trd.listensForEvent(TriggerDescriptor.TRIGGER_EVENT_DELETE) &&
        trd.isEnabled())
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