StringFileModel.java

package com.rectang.xsm.wicket;

import org.apache.wicket.model.Model;
import org.apache.wicket.Session;

import java.io.*;

import org.headsupdev.support.java.IOUtil;

/**
 * A wicket model that uses a file as the store.
 *
 * @author Andrew Williams
 * @version $Id: StringFileModel.java 674 2007-10-09 15:22:19Z aje $
 * @since 1.0
 */
public class StringFileModel
        extends Model
{
    private File backing;

    public StringFileModel( File backing )
    {
        this.backing = backing;
    }

    public void setObject( Serializable object )
    {
        String content = (String) object;

        BufferedWriter writer = null;
        try
        {
            writer = new BufferedWriter( new FileWriter( backing ) );
            writer.write( content );
        }
        catch ( IOException e )
        {
            Session.get().error( e.getMessage() );
        }
        finally
        {
            IOUtil.close( writer );
        }
    }

    public String getObject()
    {
        StringBuffer content = new StringBuffer();

        BufferedReader reader = null;
        try
        {
            reader = new BufferedReader( new FileReader( backing ) );

            String line = reader.readLine();
            while ( line != null )
            {
                content.append( line );
                content.append( '\n' );

                line = reader.readLine();
            }
        }
        catch ( IOException e )
        {
            Session.get().error( e.getMessage() );
        }
        finally
        {
            IOUtil.close( reader );
        }

        return content.toString();
    }
}