catalogsearchdiscquery.java

基于jxta的文件共享和聊天系统源代码,下载下来分析吧

package catalog_search;

import java.io.InputStream;
import java.io.StringWriter;
import java.util.Enumeration;

import net.jxta.document.Document;
import net.jxta.document.Element;
import net.jxta.document.MimeMediaType;
import net.jxta.document.StructuredDocument;
import net.jxta.document.StructuredDocumentFactory;
import net.jxta.document.StructuredTextDocument;
import net.jxta.document.TextElement;


public class CatalogSearchDiscQuery {
	private String catalog;
	public CatalogSearchDiscQuery(){}
	public CatalogSearchDiscQuery(String c)
	{
		catalog=c;
	}
	
	public Document getDocument(MimeMediaType asMimeType)  	
	  {
		 StructuredDocument document = (StructuredTextDocument) 
	          StructuredDocumentFactory.newStructuredDocument(
	              asMimeType, "example:ExampleQuery");
	      Element element;
	      element = document.createElement("searchCatalog",catalog);
	      document.appendChild(element);
	      return document;
	  }
	
	public CatalogSearchDiscQuery (InputStream stream) 
	 {
		StructuredTextDocument document=null;
	    try{ 
		 document = (StructuredTextDocument) 
	         StructuredDocumentFactory.newStructuredDocument(
	             new MimeMediaType("text/xml"), stream);
	    }
	    catch(Exception e){e.printStackTrace();}
	    Enumeration elements = document.getChildren();
	    elements = document.getChildren();
	    while (elements.hasMoreElements())
	     {
	        
	         Element el = (Element) elements.nextElement();
	         TextElement element = (TextElement) el;
	         
	        
	         if(element.getName().equals("searchCatalog"))
	         {
	         	 catalog = element.getTextValue();
	             continue;
	         }
	     }
	            
	 }
	
	public String toString()
	 {
	     try
	     {
	         StringWriter out = new StringWriter();
	         StructuredTextDocument doc = 
	             (StructuredTextDocument) getDocument(
	                 new MimeMediaType("text/xml"));
	         doc.sendToWriter(out);

	         return out.toString();
	     }
	     catch (Exception e)
	     {
	        e.printStackTrace(); 
	     	return "";
	     }
	 }
	public String getSearchCatalog()
	{
		return this.catalog;
	}
	
}