DrdatTask.java :  » Tools » drdata » com » google » android » drdat » Android Open Source

/**
 * 
 */
package com.google.android.drdat;

import android.content.ContentProvider;
import android.content.ContentValues;
import android.database.Cursor;
import android.net.Uri;

/**
 * Content provider that returns the forms for a specific task.
 * The query(...) method is the only method that really does anything 
 * in this interface.
 * 
 * @author cal
 *
 */
public class DrdatTask extends ContentProvider {
  public final String TYPE = "DrdatTask";
  private int task_id;
  private int study_id;
  private String email;
  private String passwordMD5;
  
  /* (non-Javadoc)
   * @see android.content.ContentProvider#delete(android.net.Uri, java.lang.String, java.lang.String[])
   */
  @Override
  public int delete(Uri uri, String selection, String[] selectionArgs) {
    // read only
    return 0;
  }

  /* (non-Javadoc)
   * @see android.content.ContentProvider#getType(android.net.Uri)
   */
  @Override
  public String getType(Uri uri) {
    return TYPE;
  }

  /* (non-Javadoc)
   * @see android.content.ContentProvider#insert(android.net.Uri, android.content.ContentValues)
   */
  @Override
  public Uri insert(Uri uri, ContentValues values) {
    // read only
    return null;
  }

  /* (non-Javadoc)
   * @see android.content.ContentProvider#onCreate()
   */
  @Override
  public boolean onCreate() {
    // read only: nothing to do on create
    return true;
  }

  /**
   * Grabs the study and task information for a given participant / task.
   * Needs the email, passwordMD5, study_id and task_id in the selectionArgs 
   * in order to find or generate the form data for that task.
   * 
   * @see android.content.ContentProvider#query(android.net.Uri, java.lang.String[], java.lang.String, java.lang.String[], java.lang.String)
   * @param uri - uri we were called with
   * @param projection - fields we want (not used)
   * @param selection - sql where clause (not used)
   * @param selectionArgs - contains the study_id, task_id, email, passwordMD5 we want
   * @param sortOrder - order by clause (not used)
   * 
   * @return cursor with the form data for this task
   */
  @Override
  public Cursor query(
      Uri uri, 
      String[] projection, 
      String selection,
      String[] selectionArgs, 
      String sortOrder
    ) 
  {
    DrdatSmi2Task forms = new DrdatSmi2Task(getContext());
    study_id = Integer.parseInt(selectionArgs[0]);
    task_id = Integer.parseInt(selectionArgs[1]);
    email = selectionArgs[2];
    passwordMD5 = selectionArgs[3];
    return forms.getRawForms(study_id, task_id, email, passwordMD5);
  }

  /* (non-Javadoc)
   * @see android.content.ContentProvider#update(android.net.Uri, android.content.ContentValues, java.lang.String, java.lang.String[])
   */
  @Override
  public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
    // read only
    return 0;
  }

}