6e6aa9b0
 Tarpit Grover
Basic Setup
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(function (window, angular) {
var module = angular.module('framework.services.model', []);
module.provider('Model', modelsProvider);
//module.service('DataContext', dataService);
function modelsProvider() {
var schemas = {
};
this.registerSchema = registerSchema;
this.$get = buildService;
function registerSchema(name, path, schema) {
schemas[name] = [path, schema];
return this;
}
buildService.$inject = ['$config', '$http', '$q'];
function buildService($config, $http, $q) {
var models = {};
angular.forEach(schemas, function (value, key) {
var modelName = key;
var modelPath = value[0];
var modelSchema = value[1];
models[modelName] = BuildConstructor(modelPath, modelSchema);
});
return models;
function Entity(apiEndpoint, schema, values) {
this.$$apiLocation = apiEndpoint;
this.$$schema = schema;
this.$$originalValues = {};
this.$$changedValues = {};
this.$$foreignModels = {};
this.$getChanges = getChanges;
this.$validate = validateEntity;
this.$save = saveEntity;
this.$update = updateEntity;
this.$patch = patchEntity;
this.$delete = deleteEntity;
this.$commit = commitEntity;
this.$rollback = rollbackEntity;
angular.forEach(schema, function (value, key) {
var fieldName = key,
fieldDef = value;
if (values[fieldName] !== undefined) {
if (typeof fieldDef.type === 'string' && values[fieldName] !== null) {
this.$$originalValues[fieldName] = new models[fieldDef.type](values[fieldName]);
this.$$foreignModels[fieldName] = fieldDef.type;
} else {
this.$$originalValues[fieldName] = values[fieldName];
}
} else {
this.$$originalValues[fieldName] = fieldDef.defaultValue;
}
Object.defineProperty(this, fieldName, {
configurable: false,
enumerable: true,
get: fieldDef.calculated || function () {
return this.$$changedValues.hasOwnProperty(fieldName) ?
this.$$changedValues[fieldName] : this.$$originalValues[fieldName];
},
set: function (value) {
if (angular.isUndefined(fieldDef.editable) || fieldDef.editable) {
this.$$changedValues[fieldName] = value; //CHECK: Cast to correct type??
}
}
});
}, this);
function getChanges() {
return this.$$changedValues;
}
function validateEntity() {
} //TODO
function saveEntity() {
return $http.post($config.API_ENDPOINT + this.$$apiLocation, this);
}
function updateEntity() {
var config = {
params: {
id: this.Id
}
};
return $http.put($config.API_ENDPOINT + this.$$apiLocation, this, config);
}
function patchEntity(skipSubObjects) {
var self = this;
var delta = angular.extend({ Id: this.Id }, this.$getChanges());
var config = {
params: {
id: this.Id
}
};
var request = $http.patch($config.API_ENDPOINT + this.$$apiLocation, delta, config);
request.success(function () {
self.$commit(true);
});
return request;
}
function deleteEntity() {
var config = {
params: {
id: this.Id
}
};
return $http.delete($config.API_ENDPOINT + this.$$apiLocation, config);
}
function commitEntity(skipSubObjects) {
angular.forEach(this.$$changedValues, function (value, key) {
var fieldName = key,
fieldValue = value;
this.$$originalValues[fieldName] = fieldValue
}, this);
this.$$changedValues = {};
if (skipSubObjects) return;
angular.forEach(this.$$foreignModels, function (value, key) {
this[key].$commit();
}, this);
}
function rollbackEntity(skipSubObjects) {
this.$$changedValues = {};
if (skipSubObjects) return;
angular.forEach(this.$$foreignModels, function (value, key) {
this[key].$rollback();
}, this);
}
}
function Query(apiEndpoint, ctor) {
var includes = [];
var selects = [];
var filters = [];
var order = [];
var modelCtor = ctor;
this.include = include;
this.select = select;
this.filter = filter;
this.where = filter;
this.parseAs = parseAs;
this.execute = execute;
this.orderBy = orderBy;
function parseAs(parser) {
modelCtor = parser;
}
function include() {
if (arguments.length === 2) {
if (angular.isObject(arguments[1])) {
//TODO: Process subquery
} else if (angular.isFunction(arguments[1])) {
//TODO: Process subquery
}
} else {
[].push.apply(includes, arguments);
}
return this;
}
function orderBy(prop) {
this.order.push(prop);
//todo add dir and aliases
}
function select() {
[].push.apply(selects, arguments);
modelCtor = null;
return this;
}
function filter(key, op, value) {
if (arguments.length === 1) {
filters.push(key);
} else if (arguments.length === 3) {
switch (op) {
case '&&':
op = 'and';
break;
case '||':
op = 'or';
break;
case '=':
case '==':
case '===':
op = 'eq';
break;
case '!=':
case '!==':
case '!===':
op = 'ne';
break;
case '>':
op = 'gt';
break;
case '>=':
op = 'ge';
break;
case '<':
op = 'lt';
break;
case '<=':
op = 'le';
break;
default:
break;
}
filters.push(key + ' ' + op + ' ' + value);
}
return this;
}
function execute() {
var config = {};
config.params = _buildParams();
apiCall = $config.API_ENDPOINT + apiEndpoint;
return $http.get(apiCall, config).then(function (response) {
if (!modelCtor) {
return response.data;
} else {
if (angular.isArray(response.data)) {
var results = [];
angular.forEach(response.data, function (d) {
results.push(new modelCtor(d));
});
return results;
} else {
return new modelCtor(response.data);
}
}
});
}
function _buildParams() {
var params = {};
if (includes.length) {
params.$expand = includes.join(',');
}
if (filters.length) {
params.$filter = filters.join(' and ');
}
if (selects.length) {
params.$select = selects.join(',');
}
return params;
}
}
function ModelCache() {
}
function BuildConstructor(apiEndpoint, schema) {
function ModelCtor(values) {
var values = values || {};
this.base = Entity;
this.base(apiEndpoint, schema, values);
}
ModelCtor.prototype = new Entity;
ModelCtor.$schema = schema;
ModelCtor.query = query;
ModelCtor.getById = getById;
var passon = ModelCtor;
function query() {
return new Query(apiEndpoint, passon);
}
function getById(id) {
return new Query(apiEndpoint)
.filter('Id', 'eq', id);
}
return ModelCtor;
}
}
}
dataService.$inject = ['$config', '$http', '$q', 'Models'];
function dataService($config, $http, $q, Models) {
var entityIdMaps = {};
var entityArrays = {};
}
})(window, angular);
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