organizing mongo driver

src/database/mongo/hash.js

@@ -0,0 +1,159 @@
+"use strict";
+
+module.exports = function(db, module) {
+	var helpers = module.helpers.mongo;
+
+	module.setObject = function(key, data, callback) {
+		data._key = key;
+		db.collection('objects').update({_key:key}, {$set:data}, {upsert:true, w: 1}, helpers.done(callback));
+	};
+
+	module.setObjectField = function(key, field, value, callback) {
+		var data = {};
+		field = helpers.fieldToString(field);
+		data[field] = value;
+		module.setObject(key, data, callback);
+	};
+
+	module.getObject = function(key, callback) {
+		db.collection('objects').findOne({_key:key}, {_id:0, _key:0}, callback);
+	};
+
+	module.getObjects = function(keys, callback) {
+
+		db.collection('objects').find({_key:{$in:keys}}, {_id:0}).toArray(function(err, data) {
+
+			if(err) {
+				return callback(err);
+			}
+
+			var returnData = [];
+
+			for(var i=0; i<keys.length; ++i) {
+				returnData.push(helpers.findItem(data, keys[i]));
+			}
+
+			callback(null, returnData);
+		});
+	};
+
+	module.getObjectField = function(key, field, callback) {
+		field = helpers.fieldToString(field);
+		module.getObjectFields(key, [field], function(err, data) {
+			callback(err, data ? data[field] : null);
+		});
+	};
+
+	module.getObjectFields = function(key, fields, callback) {
+		module.getObjectsFields([key], fields, function(err, items) {
+			callback(err, items ? items[0] : null);
+		});
+	};
+
+	module.getObjectsFields = function(keys, fields, callback) {
+		var _fields = {
+			_id: 0,
+			_key: 1
+		};
+
+		for(var i=0; i<fields.length; ++i) {
+			fields[i] = helpers.fieldToString(fields[i]);
+			_fields[fields[i]] = 1;
+		}
+
+		keys = keys.map(function(key) {
+			return { _key : key};
+		});
+
+		db.collection('objects').find({$or: keys}, _fields).toArray(function(err, items) {
+			if (err) {
+				return callback(err);
+			}
+
+			if (items === null) {
+				items = [];
+			}
+
+			var returnData = [],
+				index = 0,
+				item;
+
+			for (var i=0; i<keys.length; ++i) {
+
+				if (items[index] && items[index]._key === keys[i]._key) {
+					item = items[index];
+					index++;
+				} else {
+					item = {};
+				}
+
+				returnData.push(item);
+				for (var k=0; k<fields.length; ++k) {
+					if (item[fields[k]] === null || item[fields[k]] === undefined) {
+						item[fields[k]] = null;
+					}
+				}
+			}
+
+			callback(null, returnData);
+		});
+	};
+
+	module.getObjectKeys = function(key, callback) {
+		module.getObject(key, function(err, data) {
+			callback(err, data ? Object.keys(data) : []);
+		});
+	};
+
+	module.getObjectValues = function(key, callback) {
+		module.getObject(key, function(err, data) {
+			if(err) {
+				return callback(err);
+			}
+
+			var values = [];
+			for(var key in data) {
+				if (data && data.hasOwnProperty(key)) {
+					values.push(data[key]);
+				}
+			}
+			callback(null, values);
+		});
+	};
+
+	module.isObjectField = function(key, field, callback) {
+		var data = {};
+		field = helpers.fieldToString(field);
+		data[field] = '';
+		db.collection('objects').findOne({_key:key}, {fields:data}, function(err, item) {
+			callback(err, !!item && item[field] !== undefined && item[field] !== null);
+		});
+	};
+
+	module.deleteObjectField = function(key, field, callback) {
+		var data = {};
+		field = helpers.fieldToString(field);
+		data[field] = '';
+		db.collection('objects').update({_key:key}, {$unset : data}, helpers.done(callback));
+	};
+
+	module.incrObjectField = function(key, field, callback) {
+		module.incrObjectFieldBy(key, field, 1, callback);
+	};
+
+	module.decrObjectField = function(key, field, callback) {
+		module.incrObjectFieldBy(key, field, -1, callback);
+	};
+
+	module.incrObjectFieldBy = function(key, field, value, callback) {
+		var data = {};
+		field = helpers.fieldToString(field);
+		data[field] = value;
+
+		db.collection('objects').findAndModify({_key:key}, {}, {$inc: data}, {new:true, upsert:true}, function(err, result) {
+			if(typeof callback === 'function') {
+				callback(err, result ? result[field] : null);
+			}
+		});
+	};
+};