StreamElement4Rest.java

/**
*    Copyright (c) 2011-2014, OpenIoT
*   
*    This file is part of OpenIoT.
*
*    OpenIoT is free software: you can redistribute it and/or modify
*    it under the terms of the GNU Lesser General Public License as published by
*    the Free Software Foundation, version 3 of the License.
*
*    OpenIoT 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 Lesser General Public License for more details.
*
*    You should have received a copy of the GNU Lesser General Public License
*    along with OpenIoT.  If not, see <http://www.gnu.org/licenses/>.
*
*     Contact: OpenIoT mailto: info@openiot.eu
 * @author Ali Salehi
*/

package org.openiot.gsn.http.rest;

import org.openiot.gsn.beans.DataField;
import org.openiot.gsn.beans.StreamElement;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import com.thoughtworks.xstream.XStream;

public class StreamElement4Rest {
	
	private List<Field4Rest> fields = new ArrayList<Field4Rest>();

	public StreamElement4Rest(StreamElement se) {
		this.timestamp=new Date(se.getTimeStamp());
		for (int i =0;i<se.getFieldNames().length;i++) {
			fields.add( new Field4Rest(se.getFieldNames()[i],se.getFieldTypes()[i],se.getData()[i]));
		}
	}
	
	public String toString() {
        StringBuilder sb = new StringBuilder("StreamElement4Rest: (timestamp:");
        sb.append(timestamp.toString());
		sb.append("Fields =>{ ");
		for (Field4Rest field : fields)
			sb.append(field.toString()).append(", ");
        sb.append("})");
		return sb.toString();
    }

	private Date timestamp;

	public StreamElement toStreamElement() {
		String[] names = new String[fields.size()];
		Serializable[] values = new Serializable[fields.size()];
		Byte[] types = new Byte[fields.size()];
		int idx = 0;
		for (Field4Rest field : fields) {
			names[idx] = field.getName();
			values[idx] = field.getValue();
			types[idx] = field.getType();
			idx++;
		}
		
		return new StreamElement(names,types,values,timestamp.getTime());

	}
	
	public static XStream getXstream() {
		XStream xstream = new XStream();
		xstream.alias("stream-element", StreamElement4Rest.class);
		xstream.alias("field", Field4Rest.class);
		xstream.useAttributeFor(StreamElement4Rest.class,"timestamp");
		xstream.addImplicitCollection(StreamElement4Rest.class, "fields");
		xstream.registerConverter(new Field4RestConverter());
		xstream.alias("strcture", DataField.class);
		
		
		return xstream;
	}
	
	public static XStream getXstream4Structure() {
		XStream xstream = new XStream();
//		xstream.alias("stream-element", StreamElement4Rest.class);
//		xstream.alias("field", Field4Rest.class);
//		xstream.useAttributeFor(StreamElement4Rest.class,"timestamp");
//		xstream.addImplicitCollection(StreamElement4Rest.class, "fields");
//		xstream.registerConverter(new Field4RestConverter());
		return xstream;
	}

	public Date getTimestamp() {
		return timestamp;
	}
	
	
	

}