/**
   * Perform execution of the tool.
   *
   * <p>
   *
   * @param mclient The network connection to the plmaster(1) daemon.
   * @param qclient The network connection to the plqueuemgr(1) daemon.
   * @return Whether to continue and collect user input for the next phase of the tool.
   * @throws PipelineException If unable to sucessfully execute this phase of the tool.
   */
  public synchronized boolean executePhase(MasterMgrClient mclient, QueueMgrClient qclient)
      throws PipelineException {
    boolean newCheckOut = false;
    String matName = null;
    String texName = null;

    {
      /*find out if it is a fresh checkout*/
      JToolDialog tool = new JToolDialog("MaterialsCheckOut", new JPanel(), "Continue");
      JConfirmDialog dialog = new JConfirmDialog(tool, "Do you want a completely fresh checkout");
      dialog.setVisible(true);
      newCheckOut = dialog.wasConfirmed();
    }

    {
      /*-check out the asset and mat nodes-*/
      jcheckOut(mclient, pUser, pView, pPrimary, null, keep, pFroz);
      NodeMod assetMod = mclient.getWorkingVersion(pUser, pView, pPrimary);
      {
        JobReqs jreqs = assetMod.getJobRequirements();
        jreqs.addSelectionKey("LinuxOnly");
        assetMod.setJobRequirements(jreqs);
        mclient.modifyProperties(pUser, pView, assetMod);
      }

      Set<String> assetSrcs = assetMod.getSourceNames();
      err.println("The asset sources are: ");

      for (String src : assetSrcs) {
        err.println(src);

        if (src.matches(matPattern)) {
          matName = src;
          err.println("Found mat node:\n\t " + src);
          if (newCheckOut) {
            err.println("Clean mat checkout");
            jcheckOut(mclient, pUser, pView, src, null, over, frozU);
          } else {

            OverallNodeState state =
                mclient.status(pUser, pView, src).getHeavyDetails().getOverallNodeState();

            if (!state.equals(OverallNodeState.Modified)) {
              err.println("Mat node has not been modified");
              jcheckOut(mclient, pUser, pView, src, null, keep, pFroz);
            }
          }
        } else if (src.matches(matPattern + "Exp")) {
          err.println("Matexp is:\n\t" + src);
          jcheckOut(mclient, pUser, pView, src, null, keep, modi);
          {
            NodeMod expMod = mclient.getWorkingVersion(pUser, pView, src);
            JobReqs jreqs = expMod.getJobRequirements();
            jreqs.addSelectionKey("LinuxOnly");
            expMod.setJobRequirements(jreqs);
            mclient.modifyProperties(pUser, pView, expMod);
          }
        } else {
          jcheckOut(mclient, pUser, pView, src, null, over, froz);
        }
      } // end for
      err.println("mat node: " + matName);
      if (matName == null)
        throw new PipelineException("This asset node does not have an " + "attached mat node");
    }

    {
      /*find the texture node and check out so it can be changed. If new checkout, fresh textures*/
      NodeMod matMod = mclient.getWorkingVersion(pUser, pView, matName);
      TreeSet<String> matSrcs = new TreeSet<String>(matMod.getSourceNames());
      for (String src : matSrcs) {
        if (src.matches(texPattern)) {
          texName = src;
          err.println("Found tex node:\n\t " + src);
          if (newCheckOut) {
            err.println("Clean");
            jcheckOut(mclient, pUser, pView, src, null, over, frozU);
          } else {
            err.println("Old stuff");
            jcheckOut(mclient, pUser, pView, src, null, keep, pFroz);
            jcheckOut(mclient, pUser, pView, src, null, keep, modi);
          }
          continue;
        } // end if
        jcheckOut(mclient, pUser, pView, src, null, over, froz);
      } // end for
      err.println("tex node: " + texName);
      if (texName == null)
        throw new PipelineException(
            "This asset node does not have an associated " + "texture node");
    }

    err.println("Checked out the asset, mat and texture nodes");

    {
      /*check out finalise scripts*/
      jcheckOut(
          mclient,
          pUser,
          pView,
          "/projects/lr/assets/tools/mel/finalize-character",
          null,
          over,
          froz);
      jcheckOut(
          mclient, pUser, pView, "/projects/lr/assets/tools/mel/finalize-set", null, over, froz);
      jcheckOut(
          mclient, pUser, pView, "/projects/lr/assets/tools/mel/finalize-prop", null, over, froz);
    }

    err.close();

    return false;
  } // end executePhase