Examples of java.util.ListIterator

java.util.ListIterator
An iterator for lists that allows the programmer to traverse the list in either direction, modify the list during iteration, and obtain the iterator's current position in the list. A ListIterator has no current element; its cursor position always lies between the element that would be returned by a call to previous() and the element that would be returned by a call to next(). An iterator for a list of length n has n+1 possible cursor positions, as illustrated by the carets (^) below:
```
 Element(0)   Element(1)   Element(2)   ... Element(n-1) cursor positions:  ^            ^            ^            ^                  ^ 
```
Note that the {@link #remove} and {@link #set(Object)} methods arenot defined in terms of the cursor position; they are defined to operate on the last element returned by a call to {@link #next} or {@link #previous()}.
This interface is a member of the Java Collections Framework. @author Josh Bloch @version 1.28, 04/21/06 @see Collection @see List @see Iterator @see Enumeration @see List#listIterator() @since 1.2

     // ****************************************************
     // Disable all foreign key constraint before proceeding


     LinkedList oConstraints = listConstraints(jCon2);


     ListIterator oIter;
     Constraint oCons;
     String sSQL = null;


     try {


       oStmt = oConn.createStatement();


       oIter = oConstraints.listIterator();


       while (oIter.hasNext()) {
         oCons = (Constraint) oIter.next();


         switch (iDbms) {
           case DBMS_MSSQL:
             sSQL = "ALTER TABLE " + oCons.tablename + " NOCHECK CONSTRAINT " + oCons.constraintname;
             break;
           case DBMS_POSTGRESQL:
             sSQL = "UPDATE pg_class SET reltriggers=0 WHERE relname = '" + oCons.tablename + "'";
             break;
           case DBMS_ORACLE:
             sSQL = "ALTER TABLE " + oCons.tablename + " DISABLE CONSTRAINT " + oCons.constraintname;
             break;
         }


         if (DebugFile.trace) DebugFile.writeln("Statement.execute(" + sSQL + ")");


         oStmt.execute(sSQL);
       } // wend
       oStmt.close();
       sSQL = null;
     }
     catch (SQLException sqle) {
       DebugFile.writeln("SQLException: " + sqle.getMessage() + " " + sSQL + "\n");
       iErrors++;
       if (null!=oStrLog) oStrLog.append("SQLException: " + sqle.getMessage() + " " + sSQL + "\n");
     }


     // ********************************************
     // Copy data from 1.x version datamodel to v2.0


     com.knowgate.datacopy.CopyRegisters oCopy = new com.knowgate.datacopy.CopyRegisters(oProps.getProperty("schema1"), jCon1.getCatalog());


     for (int t=0; t<iTables; t++) {
       try {
         if (DBMS_ORACLE==iDbms) sTables[t] = sTables[t].toUpperCase();


         int iAppended = oCopy.append (jCon1, jCon2, sTables[t], sTables[t], null);


         if (null!=oStrLog) oStrLog.append(String.valueOf(iAppended) + " registers appended or updated at table " + sTables[t] + "\n");
       }
       catch (SQLException sqle) {
         DebugFile.writeln("SQLException: CopyRegisters.append(" + sTables[t] + ") " + sqle.getMessage() + "\n");
         DebugFile.decIdent();
         iErrors++;
         if (null!=oStrLog) oStrLog.append("SQLException: CopyRegisters.append(" + sTables[t] + ") " + sqle.getMessage() + " " + "\n");
       }
     } // next (t)


     // ************************************
     // Additional tables witout primary key


     PreparedStatement oWrtStm;
     Statement oReadStm;
     ResultSet oReadSet;


     oWrtStm = jCon2.prepareStatement("INSERT INTO k_cat_expand (gu_rootcat,gu_category,od_level,od_walk,gu_parent_cat) VALUES (?,?,?,?,?)");


     oReadStm = jCon1.createStatement(ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY);
     oReadSet = oReadStm.executeQuery("SELECT gu_rootcat,gu_category,od_level,od_walk,gu_parent_cat FROM k_cat_expand");


     while (oReadSet.next()) {
       oWrtStm.setObject(1, oReadSet.getObject(1));
       oWrtStm.setObject(2, oReadSet.getObject(2));
       oWrtStm.setObject(3, oReadSet.getObject(3));
       oWrtStm.setObject(4, oReadSet.getObject(4));
       oWrtStm.setObject(5, oReadSet.getObject(5));
       oWrtStm.executeUpdate();
     } // wend


     oReadSet.close();
     oReadStm.close();
     oWrtStm.close();


     oWrtStm = jCon2.prepareStatement("INSERT INTO k_project_expand (gu_rootprj,gu_project,nm_project,od_level,od_walk,gu_parent) VALUES (?,?,?,?,?,?)");


     oReadStm = jCon1.createStatement(ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY);
     oReadSet = oReadStm.executeQuery("SELECT gu_rootprj,gu_project,nm_project,od_level,od_walk,gu_parent FROM k_project_expand");


     while (oReadSet.next()) {
       oWrtStm.setObject(1, oReadSet.getObject(1));
       oWrtStm.setObject(2, oReadSet.getObject(2));
       oWrtStm.setObject(3, oReadSet.getObject(3));
       oWrtStm.setObject(4, oReadSet.getObject(4));
       oWrtStm.setObject(5, oReadSet.getObject(5));
       oWrtStm.setObject(6, oReadSet.getObject(6));
       oWrtStm.executeUpdate();
     } // wend


     oReadSet.close();
     oReadStm.close();
     oWrtStm.close();


     oWrtStm = jCon2.prepareStatement("INSERT INTO k_x_list_members (gu_list,tx_email,tx_name,tx_surname,tx_salutation,bo_active,dt_created,tp_member,gu_company,gu_contact,id_format,dt_modified) VALUES (?,?,?,?,?,?,?,?,?,?,?,?)");


     oReadStm = jCon1.createStatement(ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY);
     oReadSet = oReadStm.executeQuery("SELECT gu_list,tx_email,tx_name,tx_surname,tx_salutation,bo_active,dt_created,tp_member,gu_company,gu_contact,id_format,dt_modified FROM k_x_list_members");


     while (oReadSet.next()) {
       oWrtStm.setObject(1, oReadSet.getObject(1));
       oWrtStm.setObject(2, oReadSet.getObject(2));
       oWrtStm.setObject(3, oReadSet.getObject(3));
       oWrtStm.setObject(4, oReadSet.getObject(4));
       oWrtStm.setObject(5, oReadSet.getObject(5));
       oWrtStm.setObject(6, oReadSet.getObject(6));
       oWrtStm.setObject(7, oReadSet.getObject(7));
       oWrtStm.setObject(8, oReadSet.getObject(8));
       oWrtStm.setObject(9, oReadSet.getObject(9));
       oWrtStm.setObject(10, oReadSet.getObject(10));
       oWrtStm.setObject(11, oReadSet.getObject(11));
       oWrtStm.setObject(12, oReadSet.getObject(12));
       oWrtStm.executeUpdate();
     } // wend


     oReadSet.close();
     oReadStm.close();
     oWrtStm.close();


     // **************************************************
     // Enable all foreign key constraint after processing


     try {


       oStmt = oConn.createStatement();


       oIter = oConstraints.listIterator();


       while (oIter.hasNext()) {
         oCons = (Constraint) oIter.next();


         switch (iDbms) {
           case DBMS_MSSQL:
             sSQL = "ALTER TABLE " + oCons.tablename + " CHECK CONSTRAINT " + oCons.constraintname;
             break;

View Full Code Here

   * @throws SQLException
   */
  public DespatchAdvice createDespatchAdvice(JDCConnection oConn,
                                         boolean bIncludePrices) throws SQLException {
    DespatchAdvice oDispatch = new DespatchAdvice();
    ListIterator oIter = oDispatch.getTable(oConn).getColumns().listIterator();
    if (bIncludePrices) {
      while (oIter.hasNext()) {
        String sKey = ((DBColumn) oIter.next()).getName();
        if (!isNull(sKey)) oDispatch.put(sKey, get(sKey));
      } // wend
    } else {
      while (oIter.hasNext()) {
        String sKey = (String) oIter.next();
        if (!sKey.equalsIgnoreCase(DB.im_subtotal) && !sKey.equalsIgnoreCase(DB.im_taxes) &&
            !sKey.equalsIgnoreCase(DB.im_shipping) && !sKey.equalsIgnoreCase(DB.im_total) &&
            !sKey.equalsIgnoreCase(DB.im_discount)) {
          if (!isNull(sKey)) oDispatch.put(sKey, get(sKey));
        }

View Full Code Here

   */
  public void registerCallback(WorkerThreadCallback oNewCallback)
    throws IllegalArgumentException {


    WorkerThreadCallback oCallback;
    ListIterator oIter = oCallbacks.listIterator();


    while (oIter.hasNext()) {
      oCallback = (WorkerThreadCallback) oIter.next();


      if (oCallback.name().equals(oNewCallback.name())) {
        throw new IllegalArgumentException("Callback " + oNewCallback.name() + " is already registered");
      } // fi
    } // wend

View Full Code Here

   * @return <b>true</b> if a callback with such name was found and unregistered,
   * <b>false</b> otherwise
   */
  public boolean unregisterCallback(String sCallbackName) {
    WorkerThreadCallback oCallback;
    ListIterator oIter = oCallbacks.listIterator();


    while (oIter.hasNext()) {
      oCallback = (WorkerThreadCallback) oIter.next();


      if (oCallback.name().equals(sCallbackName)) {
        oIter.remove();
        iCallbacks--;
        return true;
      } // fi
    } // wend

View Full Code Here

      DebugFile.writeln("Begin Order.createInvoice([Connection])");
      DebugFile.incIdent();
    }
    String sSQL;
    Invoice oInvoice = new Invoice();
    ListIterator oIter = oInvoice.getTable(oConn).getColumns().listIterator();
    while (oIter.hasNext()) {
      String sKey = ((DBColumn) oIter.next()).getName();
      if (!isNull(sKey)) {
        if (DebugFile.trace) DebugFile.writeln("Invoice.put("+sKey+","+get(sKey)+")");
        oInvoice.put(sKey, get(sKey));
      }
    } // wend

View Full Code Here


  // ---------------------------------------------------------------------------


  private void callBack(int iOpCode, String sMessage, Exception oXcpt, Object oParam) {
    WorkerThreadCallback oCallback;
    ListIterator oIter = oCallbacks.listIterator();


    while (oIter.hasNext()) {
      oCallback = (WorkerThreadCallback) oIter.next();
      oCallback.call(getName(), iOpCode, sMessage, oXcpt, oParam);
    } // wend


  }

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                         new Object[] {after, String.valueOf(untilFocused)});
        }


        int insertionIndex = 0,
            i = typeAheadMarkers.size();
        ListIterator iter = typeAheadMarkers.listIterator(i);


        for (; i > 0; i--) {
            TypeAheadMarker marker = (TypeAheadMarker)iter.previous();
            if (marker.after <= after) {
                insertionIndex = i;
                break;
            }
        }

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            focusLog.log(Level.FINER, "Dequeue at {0} for {1}",
                         new Object[] {after, String.valueOf(untilFocused)});
        }


        TypeAheadMarker marker;
        ListIterator iter = typeAheadMarkers.listIterator
            ((after >= 0) ? typeAheadMarkers.size() : 0);


        if (after < 0) {
            while (iter.hasNext()) {
                marker = (TypeAheadMarker)iter.next();
                if (marker.untilFocused == untilFocused)
                {
                    iter.remove();
                    return;
                }
            }
        } else {
            while (iter.hasPrevious()) {
                marker = (TypeAheadMarker)iter.previous();
                if (marker.untilFocused == untilFocused &&
                    marker.after == after)
                {
                    iter.remove();
                    return;
                }
            }
        }
    }

View Full Code Here

           break;
         }
         parent=(Element)n;
       }
       //Visit them in reverse order.
       ListIterator it=parents.listIterator(parents.size());
       while (it.hasPrevious()) {
       Element ele=(Element)it.previous();
        if (!ele.hasAttributes()) {
          continue;
        }
    NamedNodeMap attrs = ele.getAttributes();
       int attrsLength = attrs.getLength();

View Full Code Here

      list.addLast(w, 1);
      list.addLast(x, 1);
      list.addLast(y, 0);
      list.addLast(z, 0);
      
      ListIterator iter = list.iterator();
      
      int c = 0;
      while (iter.hasNext())
      {
         Wibble w = (Wibble)iter.next();
         c++;
      }      
      assertEquals(c, 26);
      
      iter = list.iterator();
      assertTrue(iter.hasNext());
      Wibble w = (Wibble)iter.next();
      assertEquals("a", w.s);      
      w = (Wibble)iter.next();
      assertEquals("b", w.s);
      w = (Wibble)iter.next();
      assertEquals("c", w.s);
      w = (Wibble)iter.next();
      assertEquals("d", w.s);
      w = (Wibble)iter.next();
      assertEquals("e", w.s);
      w = (Wibble)iter.next();
      assertEquals("f", w.s);
      w = (Wibble)iter.next();
      assertEquals("g", w.s);
      w = (Wibble)iter.next();
      assertEquals("h", w.s);
      w = (Wibble)iter.next();
      assertEquals("i", w.s);
      w = (Wibble)iter.next();
      assertEquals("j", w.s);
      w = (Wibble)iter.next();
      assertEquals("k", w.s);
      w = (Wibble)iter.next();
      assertEquals("l", w.s);
      w = (Wibble)iter.next();
      assertEquals("m", w.s);
      w = (Wibble)iter.next();
      assertEquals("n", w.s);
      w = (Wibble)iter.next();
      assertEquals("o", w.s);
      w = (Wibble)iter.next();
      assertEquals("p", w.s);
      w = (Wibble)iter.next();
      assertEquals("q", w.s);
      w = (Wibble)iter.next();
      assertEquals("r", w.s);
      w = (Wibble)iter.next();
      assertEquals("s", w.s);
      w = (Wibble)iter.next();
      assertEquals("t", w.s);
      w = (Wibble)iter.next();
      assertEquals("u", w.s);
      w = (Wibble)iter.next();
      assertEquals("v", w.s);
      w = (Wibble)iter.next();
      assertEquals("w", w.s);
      w = (Wibble)iter.next();
      assertEquals("x", w.s);
      w = (Wibble)iter.next();
      assertEquals("y", w.s);
      w = (Wibble)iter.next();
      assertEquals("z", w.s);
      assertFalse(iter.hasNext());
      
      iter = list.iterator();
      assertTrue(iter.hasNext());
      w = (Wibble)iter.next();
      assertEquals("a", w.s);   
      
      iter.remove();
      
      w = (Wibble)iter.next();
      assertEquals("b", w.s);
      w = (Wibble)iter.next();
      assertEquals("c", w.s);
      w = (Wibble)iter.next();
      assertEquals("d", w.s);
      
      iter.remove();
      
      w = (Wibble)iter.next();
      assertEquals("e", w.s);
      w = (Wibble)iter.next();
      assertEquals("f", w.s);
      w = (Wibble)iter.next();
      assertEquals("g", w.s);
      w = (Wibble)iter.next();
      assertEquals("h", w.s);
      w = (Wibble)iter.next();
      assertEquals("i", w.s);
      w = (Wibble)iter.next();
      assertEquals("j", w.s);
      
      iter.remove();
      
      w = (Wibble)iter.next();
      assertEquals("k", w.s);
      w = (Wibble)iter.next();
      assertEquals("l", w.s);
      w = (Wibble)iter.next();
      assertEquals("m", w.s);
      w = (Wibble)iter.next();
      assertEquals("n", w.s);
      w = (Wibble)iter.next();
      assertEquals("o", w.s);
      w = (Wibble)iter.next();
      assertEquals("p", w.s);
      w = (Wibble)iter.next();
      assertEquals("q", w.s);
      w = (Wibble)iter.next();
      assertEquals("r", w.s);
      w = (Wibble)iter.next();
      assertEquals("s", w.s);
      w = (Wibble)iter.next();
      assertEquals("t", w.s);
      w = (Wibble)iter.next();
      assertEquals("u", w.s);
      w = (Wibble)iter.next();
      assertEquals("v", w.s);
      w = (Wibble)iter.next();
      assertEquals("w", w.s);
      w = (Wibble)iter.next();
      assertEquals("x", w.s);
      w = (Wibble)iter.next();
      assertEquals("y", w.s);
      w = (Wibble)iter.next();
      assertEquals("z", w.s);
      iter.remove();
      assertFalse(iter.hasNext());
      
      iter = list.iterator();
      assertTrue(iter.hasNext());
      w = (Wibble)iter.next();
      assertEquals("b", w.s);   
      w = (Wibble)iter.next();
      assertEquals("c", w.s);
      w = (Wibble)iter.next();
      assertEquals("e", w.s);
      w = (Wibble)iter.next();
      assertEquals("f", w.s);
      w = (Wibble)iter.next();
      assertEquals("g", w.s);
      w = (Wibble)iter.next();
      assertEquals("h", w.s);
      w = (Wibble)iter.next();
      assertEquals("i", w.s);
      w = (Wibble)iter.next();
      assertEquals("k", w.s);
      w = (Wibble)iter.next();
      assertEquals("l", w.s);
      w = (Wibble)iter.next();
      assertEquals("m", w.s);
      w = (Wibble)iter.next();
      assertEquals("n", w.s);
      w = (Wibble)iter.next();
      assertEquals("o", w.s);
      w = (Wibble)iter.next();
      assertEquals("p", w.s);
      w = (Wibble)iter.next();
      assertEquals("q", w.s);
      w = (Wibble)iter.next();
      assertEquals("r", w.s);
      w = (Wibble)iter.next();
      assertEquals("s", w.s);
      w = (Wibble)iter.next();
      assertEquals("t", w.s);
      w = (Wibble)iter.next();
      assertEquals("u", w.s);
      w = (Wibble)iter.next();
      assertEquals("v", w.s);
      w = (Wibble)iter.next();
      assertEquals("w", w.s);
      w = (Wibble)iter.next();
      assertEquals("x", w.s);
      w = (Wibble)iter.next();
      assertEquals("y", w.s);     
      assertFalse(iter.hasNext());
      
   }

View Full Code Here

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