mockhttptransport.java

In the last three articles, I’ve been walking you through the creation of an end-to-end BlackBerry a

package KnowledgeBase;

import javax.microedition.io.HttpConnection;

/**
 * Helper to test the network functionality in the Articles Screen without
 * having a server side application.
 */
class MockHTTPTransport implements HTTPTransport {
    
    private HTTPTransportListener listener = null;
     
    MockHTTPTransport() {    }
    
    public void setHTTPTransportListener(HTTPTransportListener t){
        listener = t;
    }    
    
    public void removeHTTPTransportListener(){
        listener = null;
    }    
    
    public void send(final String requestMethod, final String URL, 
        final String requestData){
        send(requestMethod, URL, requestData, null, null);;
    }
    
    public void send(final String requestMethod, final String URL, 
        final String requestData, final String[] headerKeys, 
        final String[] headerValues) {                                           
        
        // Since this is just for testing purposes, 
        // in here we will return a list or articles, 
        // as if we had just gotten them via an http request.
        createArticlesListResponse();     
                                           
    }
    
    
    
    private void createArticlesListResponse() {        
        // Create the articles.
        Article[] articles = new Article[15];
        Article article;
        for (int i = 0; i < 15; i++) {          
          article = new Article();
          article.id = String.valueOf(i);
          article.title = "Dummy article " + Integer.toString(i);
          article.author = "ramonj";
          article.contents = "This is a test article";
          article.tags = new String[] {"tag 1", "tag 2", "tag 3"};
          article.dateCreated = "01/01/2008";
          articles[i] = article;          
        }
        String FIELD_SEPARATOR = "^~^";
        String RECORD_SEPARATOR = "~^~";        
        //Create the the simulated response data 
        //with the information from the articles.
        StringBuffer response = new StringBuffer();
        for (int i = 0; i < articles.length; i++) {            
            article = articles[i];
            StringBuffer tags = new StringBuffer();
            for (int j = 0; j < article.tags.length; j++) {
                tags.append(article.tags[j] + ",");
            }
            // Remove the last ","
            tags.deleteCharAt(tags.length() - 1);            
            // Format: id^~^title^~^dateCreated^~^author^~^
            //tag1,tag2,...^~^contents~^~<NEXT RECORD>
            response.append(article.id + FIELD_SEPARATOR + 
                article.title + FIELD_SEPARATOR +
                article.dateCreated + FIELD_SEPARATOR + article.author + 
                FIELD_SEPARATOR + tags + FIELD_SEPARATOR + article.contents +
                RECORD_SEPARATOR);            
        }         
        int httpResponseCode  = HttpConnection.HTTP_OK;        
        // Introduce a delay to simulate latency.
        try {
            Thread.sleep(1500);
        } catch (InterruptedException ex) {}        
        listener.processResponse(httpResponseCode,response.toString());    
    }
}