couchdb.js

   1 /*
   2  * couchdb.js - couchdb interface
   3  *
   4  * author: hackbard@hackdaworld.org
   5  *
   6  */
   7
   8 var couchdb = {
   9         type: "http",
  10         host: "cdbsrv",
  11         port: "80",
  12         prefix: "",
  13         init: function(type,host,port,prefix) {
  14                 if(type!==undefined)
  15                         couchdb.type=type;
  16                 if(host!==undefined)
  17                         couchdb.host=host;
  18                 if(port!==undefined)
  19                         couchdb.port=port;
  20                 if(prefix!==undefined)
  21                         couchdb.prefix=prefix;
  22         },
  23         cdb_xhr: function(type,url,data,cb) {
  24                 var ao={
  25                         url: url,
  26                         type: type,
  27                         success: function(ret) {
  28                                 var ro=JSON.parse(ret);
  29                                 if('error' in ro) {
  30                                         switch(ro.error) {
  31                                                 case "file_exists":
  32                                                         cl("couchdb: exists - "+
  33                                                            url);
  34                                                         break;
  35                                                 case "not_found":
  36                                                         cl("couchdb: not found"+
  37                                                            " - "+url);
  38                                                         break;
  39                                                 default:
  40                                                         cl("couchdb: error - "+
  41                                                            url);
  42                                                         cl(ret);
  43                                         }
  44                                 }
  45                                 else {
  46                                         cl("couchdb: xhr success - "+url);
  47                                 }
  48                                 if(cb!==undefined)
  49                                         cb(ro);
  50                         },
  51                         error: function(xhr,stat,err) {
  52                                 cl("conn: "+url+", error: "+err+
  53                                    ", stat: "+stat);
  54                                 cl("executing callback anyways ...");
  55                                 cb();
  56                         }
  57                 };
  58                 if((data!==undefined)&&(data!==null))
  59                         ao.data=JSON.stringify(data);
  60                 $.ajax(ao);
  61         },
  62         item_count: function(db,callback) {
  63                 var url=couchdb.type+"://"+couchdb.host+":"+couchdb.port+"/"+
  64                         couchdb.prefix+db+"/_all_docs?limit=0";
  65                 couchdb.cdb_xhr('GET',url,null,function(ret) {
  66                         callback(ret.total_rows);
  67                 });
  68         },
  69         get_item: function(db,key,callback) {
  70                 var url=couchdb.type+"://"+couchdb.host+":"+couchdb.port+"/"+
  71                         couchdb.prefix+db+"/"+key;
  72                 couchdb.cdb_xhr('GET',url,null,function(ret) {
  73                         callback(ret);
  74                 });
  75         },
  76         get_db: function(db,callback) {
  77                 var url=couchdb.type+"://"+couchdb.host+":"+couchdb.port+"/"+
  78                         couchdb.prefix+db+"/_all_docs?include_docs=true";
  79                 couchdb.cdb_xhr('GET',url,null,function(ret) {
  80                         callback(ret);
  81                 });
  82         },
  83         add_item: function(db,key,data,callback) {
  84                 var url=couchdb.type+"://"+couchdb.host+":"+couchdb.port+"/"+
  85                         couchdb.prefix+db+"/"+k;
  86                 couchdb.cdb_xhr('PUT',url,data,function(ret) {
  87                         callback(ret);
  88                 });
  89         }
  90 };