android - Using join with Content Provider to query from multiple tables -


i trying retrieve data 7 tables , needs join them retrieve data , , trying implement content provider project. got lots of sample follow single table execution using content provider, can't strong sample follow join case. , in advance need pass string parameter query joining table on base of string parameter.

for sample trying 2 tables not of luck pass parameter

     case join_for_all_event_table:         //it used id need string parameter pass         //it here, , don't know how can achieve that.         //this works case of id not string.            // , event_id in case string needs have - symbol                              //on it.         _id = contenturis.parseid(uri);             log.e("************* args ",_id + "");             retcursor = db.rawquery(                     "select * " +                             "from " +                             "event_info" + " left join "                             + "wild_animal_info" + " on "                             + "event_info.event_id"                             + " = " + "wild_animal_info.event_id"+" "+"event_info.event_id"+" ="+ args[0] ,null);             break;          default:

and dbhelper looks join

/**  * method data using join  */  public void getalldatafromeventid(string eventid){      cursor cursor = mycr.query(contenturis.withappendedid(             tigercontract.content_uri_relationship_join, id),null,null,null,null);      if(cursor.movetofirst()){         log.v("***********","size of crsor "+cursor.getcount());         cursor.movetofirst();         log.v("********new ",cursor.getstring(1));         log.v("********new ",cursor.getstring(2));         log.v("********new ",cursor.getstring(4));         log.v("********new ",cursor.getstring(5));      }else{         cursor.close();          log.v("*********new ","didn't got there");     }

and other thing did in contract class join are

   public static final string path_join_for_all_event_talbe = "join_for_all_event_table";    public static final uri content_uri_relationship_join= base_content_uri.buildupon().appendpath(path_join_for_all_event_talbe).build();    public static final string content_type_join = "vnd.android.cursor.item/" + content_authority +"/"+ path_join_for_all_event_talbe;

so, waiting strong sample follow on join case in content provider. , in advance people out there.


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