001/**
002 *   GRANITE DATA SERVICES
003 *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 *   This file is part of the Granite Data Services Platform.
006 *
007 *   Granite Data Services is free software; you can redistribute it and/or
008 *   modify it under the terms of the GNU Lesser General Public
009 *   License as published by the Free Software Foundation; either
010 *   version 2.1 of the License, or (at your option) any later version.
011 *
012 *   Granite Data Services is distributed in the hope that it will be useful,
013 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
014 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 *   General Public License for more details.
016 *
017 *   You should have received a copy of the GNU Lesser General Public
018 *   License along with this library; if not, write to the Free Software
019 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 *   USA, or see <http://www.gnu.org/licenses/>.
021 */
022package org.granite.tide.data.model;
023
024import java.io.Externalizable;
025import java.io.IOException;
026import java.io.ObjectInput;
027import java.io.ObjectOutput;
028
029
030public class PageInfo implements Externalizable {
031        
032        private static final long serialVersionUID = 1L;
033        
034        private int firstResult;
035        private int maxResults;
036        private SortInfo sortInfo;
037        
038        
039        public PageInfo() {             
040        }
041        
042    public PageInfo(int firstResult, int maxResults) {
043        this.firstResult = firstResult;
044        this.maxResults = maxResults;
045        this.sortInfo = null;
046    }
047    
048        public PageInfo(int firstResult, int maxResults, String[] order, boolean[] desc) {
049                this.firstResult = firstResult;
050                this.maxResults = maxResults;
051                this.sortInfo = order != null && desc != null && order.length > 0 && desc.length > 0 ? new SortInfo(order, desc) : null;
052        }
053        
054        
055        public int getFirstResult() {
056                return firstResult;
057        }
058        public void setFirstResult(int firstResult) {
059                this.firstResult = firstResult;
060        }
061        
062        public int getMaxResults() {
063                return maxResults;
064        }
065        public void setMaxResults(int maxResults) {
066                this.maxResults = maxResults;
067        }
068        
069        public SortInfo getSortInfo() {
070                return sortInfo;
071        }
072        public void setSortInfo(SortInfo sortInfo) {
073                this.sortInfo = sortInfo;
074        }
075        
076
077        public void writeExternal(ObjectOutput out) throws IOException {
078                out.writeObject(firstResult);
079                out.writeObject(maxResults);
080                out.writeObject(sortInfo != null ? sortInfo.getOrder() : null);
081                out.writeObject(sortInfo != null ? sortInfo.getDesc() : null);
082        }
083
084        public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
085                firstResult = (Integer)in.readObject();
086                maxResults = (Integer)in.readObject();
087                Object[] oorder = (Object[])in.readObject();
088                Object[] odesc = (Object[])in.readObject();
089                if (oorder == null || odesc == null) {
090                        sortInfo = null;
091                        return;
092                }
093                String[] order = new String[oorder.length];
094                boolean[] desc = new boolean[oorder.length];
095                int i = 0;
096                for (Object o : oorder)
097                        order[i++] = (String)o;
098                i = 0;
099                for (Object d : odesc)
100                        desc[i++] = (Boolean)d;
101                sortInfo = new SortInfo(order, desc);
102        }
103
104}