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Sourcecode: mysql-connector-java version File versions  Download package

RowDataStatic.java

/*
 Copyright (C) 2002-2004 MySQL AB

 This program is free software; you can redistribute it and/or modify
 it under the terms of version 2 of the GNU General Public License as 
 published by the Free Software Foundation.

 There are special exceptions to the terms and conditions of the GPL 
 as it is applied to this software. View the full text of the 
 exception in file EXCEPTIONS-CONNECTOR-J in the directory of this 
 software distribution.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA



 */
package com.mysql.jdbc;

import java.util.ArrayList;
import java.util.List;

/**
 * Represents an in-memory result set
 * 
 * @author dgan
 * @version $Id: RowDataStatic.java 3726 2005-05-19 15:52:24Z mmatthews $
 */
00036 public class RowDataStatic implements RowData {
      private int index;

      ResultSet owner;

      private List rows;

      /**
       * Creates a new RowDataStatic object.
       * 
       * @param rows
       *            DOCUMENT ME!
       */
00049       public RowDataStatic(ArrayList rows) {
            this.index = -1;
            this.rows = rows;
      }

      /**
       * DOCUMENT ME!
       * 
       * @param row
       *            DOCUMENT ME!
       */
00060       public void addRow(byte[][] row) {
            this.rows.add(row);
      }

      /**
       * Moves to after last.
       */
00067       public void afterLast() {
            this.index = this.rows.size();
      }

      /**
       * Moves to before first.
       */
00074       public void beforeFirst() {
            this.index = -1;
      }

      /**
       * DOCUMENT ME!
       */
00081       public void beforeLast() {
            this.index = this.rows.size() - 2;
      }

      /**
       * DOCUMENT ME!
       */
00088       public void close() {
      }

      /**
       * DOCUMENT ME!
       * 
       * @param atIndex
       *            DOCUMENT ME!
       * 
       * @return DOCUMENT ME!
       */
00099       public Object[] getAt(int atIndex) {
            if ((atIndex < 0) || (atIndex >= this.rows.size())) {
                  return null;
            }

            return (Object[]) this.rows.get(atIndex);
      }

      /**
       * DOCUMENT ME!
       * 
       * @return DOCUMENT ME!
       */
00112       public int getCurrentRowNumber() {
            return this.index;
      }

      /**
       * @see com.mysql.jdbc.RowData#getOwner()
       */
00119       public ResultSet getOwner() {
            return this.owner;
      }

      /**
       * DOCUMENT ME!
       * 
       * @return DOCUMENT ME!
       */
00128       public boolean hasNext() {
            boolean hasMore = (this.index + 1) < this.rows.size();

            return hasMore;
      }

      /**
       * Returns true if we got the last element.
       * 
       * @return DOCUMENT ME!
       */
00139       public boolean isAfterLast() {
            return this.index >= this.rows.size();
      }

      /**
       * Returns if iteration has not occured yet.
       * 
       * @return DOCUMENT ME!
       */
00148       public boolean isBeforeFirst() {
            return (this.index == -1) && (this.rows.size() != 0);
      }

      /**
       * DOCUMENT ME!
       * 
       * @return DOCUMENT ME!
       */
00157       public boolean isDynamic() {
            return false;
      }

      /**
       * DOCUMENT ME!
       * 
       * @return DOCUMENT ME!
       */
00166       public boolean isEmpty() {
            return this.rows.size() == 0;
      }

      /**
       * DOCUMENT ME!
       * 
       * @return DOCUMENT ME!
       */
00175       public boolean isFirst() {
            return this.index == 0;
      }

      /**
       * DOCUMENT ME!
       * 
       * @return DOCUMENT ME!
       */
00184       public boolean isLast() {
            //
            // You can never be on the 'last' row of
            // an empty result set
            //
            if (this.rows.size() == 0) {
                  return false;
            }

            return (this.index == (this.rows.size() - 1));
      }

      /**
       * DOCUMENT ME!
       * 
       * @param rows
       *            DOCUMENT ME!
       */
00202       public void moveRowRelative(int rowsToMove) {
            this.index += rowsToMove;
      }

      /**
       * DOCUMENT ME!
       * 
       * @return DOCUMENT ME!
       */
00211       public Object[] next() {
            this.index++;

            if (this.index < this.rows.size()) {
                  return (Object[]) this.rows.get(this.index);
            }

            return null;
      }

      /**
       * DOCUMENT ME!
       * 
       * @param atIndex
       *            DOCUMENT ME!
       */
00227       public void removeRow(int atIndex) {
            this.rows.remove(atIndex);
      }

      /**
       * DOCUMENT ME!
       * 
       * @param newIndex
       *            DOCUMENT ME!
       */
00237       public void setCurrentRow(int newIndex) {
            this.index = newIndex;
      }

      /**
       * @see com.mysql.jdbc.RowData#setOwner(com.mysql.jdbc.ResultSet)
       */
00244       public void setOwner(ResultSet rs) {
            this.owner = rs;
      }

      /**
       * DOCUMENT ME!
       * 
       * @return DOCUMENT ME!
       */
00253       public int size() {
            return this.rows.size();
      }
}

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