xmlsyncdocument.java

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/**
 * @(#)$RCSfile: XMLSyncDocument.java,v $            $Revision: 1.2 $
 *
 * ====================================================================
 * Copyright 2001, Reaxion Corp.,
 * 11418 105th PL NE, Kirkland, WA, 98033, USA
 * All rights reserved.
 * ====================================================================
 *
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is the Tequila SyncML.
 *
 * The Initial Developer of the Original Code is Reaxion Corp.
 * All Rights Reserved.
 */
package com.reaxion.tequila.syncml.sync;

import java.util.*;
import java.io.*;

import com.reaxion.tequila.syncml.*;
import com.reaxion.tequila.syncml.xml.*;
import com.reaxion.tequila.syncml.xml.node.*;
import com.reaxion.tequila.syncml.xml.node.xpath.XPathAPI;
import com.reaxion.tequila.syncml.util.*;

/**
 * The implementation of IXMLSyncDocument
 * XML document that could be synchronized should extends this class
 *
 * @version   $1.0$
 * @author    Oleg A. Oksyuk
 */
public abstract class XMLSyncDocument implements IXMLSyncDocument {

    private IXMLNode doc;
    private String dbName;
    private String fullDbName;

    /**
     * When add/delete/replace method called with needToSync=true this method is called
     * Here we could do something like put the command to stack for latter
     * synchronization
     */
    protected abstract void addCommand(SyncSyncCommand command);

    public XMLSyncDocument(String aPath, String aDbName) {
        Log.println("XMLSyncDocument("+aPath+","+aDbName+")");
        dbName = aDbName;
        fullDbName = (null != aPath) ? aPath+aDbName : aDbName;
//        try {
//            doc = XmlIO.readXmlNodeFromFile(fullDbName);
//        } catch (Exception e) {
//        	Log.printEx(e);
//        }
    }
    public XMLSyncDocument(String aDbName) {
        dbName = aDbName;
        fullDbName = aDbName;
//        try {
//            doc = XmlIO.readXmlNodeFromFile(fullDbName);
//        } catch (Exception e) {
//        	Log.printEx(e);
//        }
    }
    public IXMLNode getDocument() {
        return doc;
    }
    public String getDbName() {
        return dbName;
    }
    public void save() throws IOException {
        XmlIO.writeXmlNodeToFile(doc, fullDbName);
        Log.println("Document saved successfully");
    }

    public int put(IXMLNode data, boolean necessarily) throws IOException {
        byte [] bts = XmlIO.writeXmlNodeToBytes(data);
        doc = XmlIO.readXmlNodeFromBytes(bts);
        Log.println("Document class: "+doc.getClass().getName());
        return SyncStatuses.OK;
    }

    public synchronized int add(SyncTarget target, Object data,
            boolean necessarily, boolean needToSync) {
        IXMLNodeAttr t = getTargetNode(target);
        if (!(t instanceof IXMLNode)) {
            throw new SyncException("Can not add attribute to attribute");
        }
        IXMLNode tn = (IXMLNode) t;
        if (data instanceof String) {
            String str = (String) data;
            int nameBegin = str.indexOf("?")+"?".length();
            int nameEnd = str.indexOf("=", nameBegin);
            int valBegin = str.indexOf("\'", nameEnd);
            int valEnd = -1;
            if (valBegin < 0) {
                valBegin = nameEnd+"=".length();
                valEnd = str.length();
            } else {
                valBegin = valBegin+"\'".length();
                valEnd = str.indexOf("\'", valBegin);
            }
            String name = str.substring(nameBegin, nameEnd);
            String value = str.substring(valBegin, valEnd);
            IXMLAttr attr = new XmlAttrImpl(tn, name, value);
            tn.add(attr);
        } else if (data instanceof IXMLNode) {
            tn.add((IXMLNode) data);
        } else {
            throw new SyncException("Wrong dataToAdd");
        }
        if (needToSync) {
            addCommand(new SyncAdd(target, data, !ISyncServer.COMMAND_RESP_NEEDED));
        }
        return SyncStatuses.OK;
    }
    public synchronized int delete(SyncTarget target,
            boolean necessarily, boolean needToSync) {
        IXMLNodeAttr t = getTargetNode(target);
        t.delete();
        if (needToSync) {
            addCommand(new SyncDelete(target, !ISyncServer.COMMAND_RESP_NEEDED));
        }
        return SyncStatuses.OK;
    }
    public synchronized int replace(SyncTarget target, String data,
            boolean necessarily, boolean needToSync) {
        IXMLNodeAttr t = getTargetNode(target);
        t.replace(data);
        if (needToSync) {
            addCommand(new SyncReplace(target, data, !ISyncServer.COMMAND_RESP_NEEDED));
        }
        return SyncStatuses.OK;
    }

    public boolean isExists() {
        return (doc != null);
    }

    private IXMLNodeAttr getTargetNode(SyncTarget target)  {
        if (null == doc) {
            throw new NoDocExistException();
        }
        return XPathAPI.selectSingleXmlNode(doc, target.getURI().getElData().toString().trim());
    }

    public String toString() {
        return dbName;
    }

    /**
     * All debug logs for child classes should be print through this method
     *
     * @param     msg message to log
     */
    protected void log(String msg) {
        StringBuffer res = new StringBuffer("    ");
        res.append(this.getClass().getName());
        res.append("[");
        res.append(hashCode());
        res.append(",");
        res.append(dbName);
        res.append("].");
        res.append(msg);
        Log.println(res);
    }

}

/* -----------------------------------------------------------------------------
 * Change log:
 * -----------------------------------------------------------------------------
 * $Log: XMLSyncDocument.java,v $
 * Revision 1.2  2001/10/17 15:27:42  OlegO
 * changed comments for better javadoc
 *
 * Revision 1.1.1.1  2001/10/11 13:13:32  OlegO
 * no message
 *
 */