search.java

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package com.valhalla.jbother.jabber.smack;

import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smackx.*;
import org.jivesoftware.smackx.packet.*;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;

/**
 * Created by luke on Apr 1, 2005 12:53:47 PM
 */

/**
 * class implementing packets used to search Jabber User Directory
 *
 * searching process, according to JEP-0055 looks as following:
 *   1) query the information repository regarding the possible search fields
 *   2) send search query
 *   3) receive search results
 *
 * Because search fields are not standard, they are kept in hash map: keys are names of the
 * fields and values are, well, values of those fields :-)
 *
 * TODO: search using data forms
 */

public class Search extends IQ
{
  private static String fId = "$Id$";

  public final String NAMESPACE = "jabber:iq:search";

  String instructions = null;

  HashMap searchFields = null;
  ArrayList items = null;

  DataForm searchDataForm = null;

  public Search(String aInstructions, HashMap aSearchFields) {
    instructions = aInstructions;
    searchFields = aSearchFields;
  }

  public Search()
  {}


  public String getInstructions() {
    return instructions;
  }

  public void setInstructions(String instructions) {
    this.instructions = instructions;
  }

  public HashMap getSearchFields() {
    return searchFields;
  }

  public void setSearchFields(HashMap searchFields) {
    this.searchFields = searchFields;
  }

  public ArrayList getItems() {
    return items;
  }

  public void setItems(ArrayList items) {
    this.items = items;
  }

  public DataForm getSearchDataForm() {
    return searchDataForm;
  }

  public void setSearchDataForm(DataForm searchDataForm) {
    this.searchDataForm = searchDataForm;
  }

  public void addItem(Item aItem)
  {
    if(items == null) {
      items = new ArrayList();
    }
    items.add(aItem);
  }

  public String getChildElementXML()
  {
    StringBuffer buf = new StringBuffer();
    buf.append("<query xmlns=\"" + NAMESPACE + "\">");
    if(instructions != null) {
      buf.append("<instructions>" + instructions + "</instructions>");
    }
    if(searchFields != null)
    {
      Iterator iKeys = searchFields.keySet().iterator();
      while(iKeys.hasNext())
      {
        String field = (String)iKeys.next();
        buf.append( "<" + field + ">" );
        buf.append( searchFields.get(field) );
        buf.append( "</" + field + ">" );
      }
    }
    if(items != null)
    {
      Iterator iItems = items.iterator();
      while(iItems.hasNext()) {
        buf.append(((Search.Item)iItems.next()).toXML());
      }
    }
    if(searchDataForm != null) {
      buf.append(searchDataForm.toXML());
    }
    buf.append("</query>");
    return buf.toString();
  }

  /**
   * inner class for representing "items", ie. the elements that are returned
   * from querying the JUD
   */
  public static class Item
  {
    private String jid;
    HashMap attributes;

    public Item(String jid) {
      this.jid = jid;
    }

    public String getJid() {
      return jid;
    }

    public void setJid(String jid) {
      this.jid = jid;
    }

    public HashMap getAttributes() {
      return attributes;
    }

    public void setAttributes(HashMap attributes) {
      this.attributes = attributes;
    }

    public String toXML()
    {
      StringBuffer out = new StringBuffer();
      out.append( "<item jid=\"" + jid + "\">" );
      Iterator iAttrs = attributes.keySet().iterator();
      while(iAttrs.hasNext())
      {
        String attr = (String)iAttrs.next();
        out.append( "<" + attr + ">" + attributes.get(attr) + "</" + attr + ">" );
      }
      out.append( "</item>" );
      return out.toString();
    }

  }
}