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

      ArrayList ret = null; 
      ArrayList entriesToRemove = new ArrayList();
      try {
         synchronized(this) {
            LinkedList list = new LinkedList(this.storage);
            ListIterator iter = list.listIterator(list.size());
            int count = 0;
            long currentSizeInBytes = 0L;
            long totalSizeInBytes = 0L;
            ret = new ArrayList();


            // it leaves at least one entry in the list
            while (iter.hasPrevious()) {
               I_QueueEntry entry = (I_QueueEntry)iter.previous();
               currentSizeInBytes = entry.getSizeInBytes();
               if (!isInsideRange(count, numOfEntries, totalSizeInBytes, numOfBytes)) break;
               totalSizeInBytes += currentSizeInBytes;


               if (limitEntry != null && this.comparator.compare(limitEntry, entry) >= 0) break;

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              Value lock2 = lock2EqVal.getValue();
              Integer lock2Num = lockToLockNum.get(lock2);


                List afterTn2 = new ArrayList();
              afterTn2.addAll( lockOrder.getSuccsOf(lock2Num) ); // filter here!
              ListIterator lit = afterTn2.listIterator();
              while(lit.hasNext())
              {
                Integer to = (Integer) lit.next(); // node the edges go to
                List labels = lockOrder.getLabelsForEdges(lock2Num, to);
                boolean keep = false;
                if(labels != null) // this shouldn't really happen... is something wrong with the edge-labelled graph?
                {
                  for(Object l : labels)
                  {
                    CriticalSection labelTn = (CriticalSection) l;
                    
                    // Check if labelTn and tn1 share a static lock
                    boolean tnsShareAStaticLock = false;
                    for( EquivalentValue tn1LockEqVal : tn1.lockset )
                    {
                      Integer tn1LockNum = lockToLockNum.get(tn1LockEqVal.getValue());
                      if(tn1LockNum < 0)
                      {
                        // this is a static lock... see if some lock in labelTn has the same #
                        for( EquivalentValue labelTnLockEqVal : labelTn.lockset )
                        {
                          if(lockToLockNum.get(labelTnLockEqVal.getValue()) == tn1LockNum)
                          {
                            tnsShareAStaticLock = true;
                          }
                        }
                      }
                    }
                    
                    if(!tnsShareAStaticLock) // !hasStaticLockInCommon(tn1, labelTn))
                    {
                      keep = true;
                      break;
                    }
                  }
                }
                if(!keep)
                  lit.remove();
              }


/*                  for( int i = 0; i < afterTn2.size(); i++ )
                {
                  List succs = lockOrder.getSuccsOf(afterTn2.get(i)); // but not here

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    List imports = _unit.imports();
    if (imports.size() == 0) {
      return null;
    }
    ArrayList importDecl = new ArrayList();
    ListIterator iter = imports.listIterator();
    while (iter.hasNext()) {
      ImportDeclaration decl = (ImportDeclaration) iter.next();
      importDecl.add(decl.getName().toString());
    }
    return importDecl;
  }

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    List comments = _unit.getCommentList();
    if (comments.size() == 0) {
      return null;
    }
    ArrayList javaDocComments = new ArrayList();
    ListIterator iterator = comments.listIterator();
    while (iterator.hasNext()) {
      Object object = iterator.next();
      if (object instanceof Javadoc) {
        String comment = ((Javadoc) object).getComment();
        // ((Javadoc)object).isDocComment();
        // if (object instanceof Comment){
        // comment = ((Comment)object).toString();

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    return javaDocComments;
  }


  public JClass getDeclaredClass() {
    List types = _unit.types();
    ListIterator typeIter = types.listIterator(0);
    if (typeIter.hasNext()) {
      TypeDeclaration object = (TypeDeclaration) typeIter.next();
      _class = new JClass();
      setClassInformation(_class, object);
      return _class;
    }
    return null;

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      cls.setSuperClass(_superClass.getName().getFullyQualifiedName());
    }


    List interfaceLst = object.superInterfaceTypes();


    ListIterator interfaces = interfaceLst.listIterator();
    while (interfaces.hasNext()) {
      {
        SimpleType sin = (SimpleType) interfaces.next();
        cls.getInterfaces().add(sin.toString());
      }


    }
    addMethods(cls, object);

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      if (d == null) {
        continue;
      }
      method.setCodeBlock(d.toString());
      List param = dec.parameters();
      ListIterator paramList = param.listIterator();
      while (paramList.hasNext()) {
        SingleVariableDeclaration sin = (SingleVariableDeclaration) paramList.next();
        method.getParameters().add(sin.getType().toString());
      }


      cls.getMethodDeclarations().add(method);
    }

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      oStmt.close();
    } // fi (k_x_contact_prods)


    // Saca la lista de categorías hijas de primer nivel y repite el proceso de borrado
    LinkedList oChilds = oCat.browse(oConn, BROWSE_DOWN, BROWSE_BOTTOMUP);
    ListIterator oIter = oChilds.listIterator();


    while (oIter.hasNext()) {
      oCat = (Category) oIter.next();
      oCat.delete(oConn);
    } // wend


    if (oConn.getDataBaseProduct()==JDCConnection.DBMS_POSTGRESQL) {
      if (DebugFile.trace) DebugFile.writeln("Connection.executeQuery(SELECT k_sp_del_category_r ('" + sCategoryGUID + "'))");

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   */
  public void cloneContacts(String sContactsFilter, String sTargetWorkArea, String sNewOwnerId)
    throws SQLException,IOException,InstantiationException,IllegalAccessException,
           IOException, ClassNotFoundException, org.xml.sax.SAXException {


  ListIterator oIter;
    Statement oStmt= null;
    ResultSet oRSet= null;
    Object[] oPKOr = new Object[1];
  Object[] oPKTr = new Object[1];


    if (DebugFile.trace) {
      DebugFile.writeln("Begin ModelManager.cloneContacts(" + sContactsFilter + "," + sTargetWorkArea + "," + sNewOwnerId + ")");
      DebugFile.incIdent();
    }


    if (null==oConn)
      throw new IllegalStateException("Not connected to database");


  JDCConnection oJDC;
    // Get a JDC Connection Wrapper
    if (oConn instanceof JDCConnection)
      oJDC = (JDCConnection) oConn;
    else
      oJDC = new JDCConnection(oConn, null);


  String sContactXml = null;
  String sCompanyXml = null;
  
  if (oJDC.getPool()==null) {
      switch (oJDC.getDataBaseProduct()) {
        case JDCConnection.DBMS_MSSQL:
          sContactXml = getResourceAsString("scripts/mssql/contact_clon.xml", sEncoding);
          sCompanyXml = getResourceAsString("scripts/mssql/company_clon.xml", sEncoding);
          break;
        case JDCConnection.DBMS_MYSQL:
          sContactXml = getResourceAsString("scripts/mysql/contact_clon.xml", sEncoding);
          sCompanyXml = getResourceAsString("scripts/mysql/company_clon.xml", sEncoding);
          break;
      case JDCConnection.DBMS_ORACLE:
        sContactXml = getResourceAsString("scripts/oracle/contact_clon.xml", sEncoding);
        sCompanyXml = getResourceAsString("scripts/oracle/company_clon.xml", sEncoding);
        break;
      case JDCConnection.DBMS_POSTGRESQL:
        sContactXml = getResourceAsString("scripts/postgresql/contact_clon.xml", sEncoding);
        sCompanyXml = getResourceAsString("scripts/postgresql/company_clon.xml", sEncoding);
        break;
      default:
        if (DebugFile.trace) {
          DebugFile.writeln("Unsupported database");
          DebugFile.decIdent();
        }
        throw new SQLException ("Unsupported database");
      }
  }
  else {
    FileSystemWorkArea oFsw = new FileSystemWorkArea(((DBBind)oJDC.getPool().getDatabaseBinding()).getProperties());
      try {
        switch (oJDC.getDataBaseProduct()) {
          case JDCConnection.DBMS_MSSQL:
            sContactXml = oFsw.readstorfilestr("datacopy/mssql/contact_clon.xml", sEncoding);
            sCompanyXml = oFsw.readstorfilestr("datacopy/mssql/company_clon.xml", sEncoding);
            break;
          case JDCConnection.DBMS_MYSQL:
            sContactXml = oFsw.readstorfilestr("datacopy/mysql/contact_clon.xml", sEncoding);
            sCompanyXml = oFsw.readstorfilestr("datacopy/mysql/company_clon.xml", sEncoding);
            break;
          case JDCConnection.DBMS_ORACLE:
            sContactXml = oFsw.readstorfilestr("datacopy/oracle/contact_clon.xml", sEncoding);
            sCompanyXml = oFsw.readstorfilestr("datacopy/oracle/company_clon.xml", sEncoding);
            break;
          case JDCConnection.DBMS_POSTGRESQL:
            sContactXml = oFsw.readstorfilestr("datacopy/postgresql/contact_clon.xml", sEncoding);
            sCompanyXml = oFsw.readstorfilestr("datacopy/postgresql/company_clon.xml", sEncoding);
            break;
          default:
            if (DebugFile.trace) {
              DebugFile.writeln("Unsupported database "+oJDC.getMetaData().getDatabaseProductName());
              DebugFile.decIdent();
            }
            throw new SQLException ("Unsupported database "+oJDC.getMetaData().getDatabaseProductName());
        }
      } catch (com.enterprisedt.net.ftp.FTPException neverthrown) { }
  } // fi
  
    Properties oParams = new Properties();
    oParams.put("IdWorkArea", sTargetWorkArea);
    oParams.put("IdOwner", sNewOwnerId==null ? "null" : sNewOwnerId);


    DataStruct oCS = new DataStruct();
    DataStruct oDS = new DataStruct();


    oCS.setOriginConnection(oConn);
    oCS.setTargetConnection(oConn);
    oCS.setAutoCommit(false);


    oDS.setOriginConnection(oConn);
    oDS.setTargetConnection(oConn);
    oDS.setAutoCommit(false);


    oCS.parse (sCompanyXml, oParams);
    oDS.parse (sContactXml, oParams);


  try {


    LinkedList<String> oContacts = new LinkedList<String>();
    LinkedList<String> oCompanies = new LinkedList<String>();


    oStmt = oConn.createStatement(ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY);
    oRSet = oStmt.executeQuery("SELECT gu_contact,gu_company,gu_workarea FROM k_contacts WHERE "+sContactsFilter);
    while (oRSet.next()) {
      oContacts.add(oRSet.getString(1));
      String sCompany = oRSet.getString(2);
      if (!oRSet.wasNull()) {
        if (!sTargetWorkArea.equals(oRSet.getString(3))) {
          oCompanies.add(sCompany);
        }
      }
    } // wend
    oRSet.close();
    oRSet=null;
    oStmt.close();
    oStmt=null;


    if (oCompanies.size()>0) {
      oIter = oCompanies.listIterator();
      while (oIter.hasNext()) {
        oPKOr[0] = oIter.next();
        oPKTr[0] = Gadgets.generateUUID();
          oCS.insert(oPKOr, oPKTr, 1);
        oCS.commit();
          if (null!=oStrLog) oStrLog.append("New Company "+oPKTr[0]+" created successfully\n");
      } // wend
    } // fi


    oIter = oContacts.listIterator();
    while (oIter.hasNext()) {
      oPKOr[0] = oIter.next();
      oPKTr[0] = Gadgets.generateUUID();
        oDS.insert(oPKOr, oPKTr, 1);
      oDS.commit();
        if (null!=oStrLog) oStrLog.append("New Contact "+oPKTr[0]+" created successfully\n");
    } // wend

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    oRSet = oStmt.executeQuery(sSQL);
    while (oRSet.next()) oApps.add(oRSet.getObject(1));
    oRSet.close();
    oStmt.close();


    ListIterator oIter = oApps.listIterator();
    oPrep = oConn.prepareStatement("DELETE FROM k_x_app_workarea WHERE gu_workarea='" + sTargetWorkAreaId + "' AND id_app=?");
    while (oIter.hasNext()) {
      oPrep.setObject(1, oIter.next());
      oPrep.executeUpdate();
    }
    oPrep.close();
    oIter = null;
    oApps = null;

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