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- // Licensed to Cloudera, Inc. under one
- // or more contributor license agreements. See the NOTICE file
- // distributed with this work for additional information
- // regarding copyright ownership. Cloudera, Inc. licenses this file
- // to you under the Apache License, Version 2.0 (the
- // "License"); you may not use this file except in compliance
- // with the License. You may obtain a copy of the License at
- //
- // http://www.apache.org/licenses/LICENSE-2.0
- //
- // Unless required by applicable law or agreed to in writing, software
- // distributed under the License is distributed on an "AS IS" BASIS,
- // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- // See the License for the specific language governing permissions and
- // limitations under the License.
- function RdbmsViewModel() {
- var self = this;
- self.selectedServer = ko.observable();
- self.servers = ko.observable({});
- self.selectedDatabase = ko.observable(0);
- self.databases = ko.observableArray([]);
- self.query = ko.mapping.fromJS({
- 'id': -1,
- 'query': '',
- 'name': null,
- 'description': null,
- 'errors': []
- });
- self.rows = ko.observableArray();
- self.columns = ko.observableArray();
- self.filter = ko.observable("");
- self.isLoading = ko.observable(false);
- self.isReady = ko.observable(false);
- self.server = ko.computed({
- 'read': function() {
- if (self.servers() && self.selectedServer()) {
- return self.servers()[self.selectedServer()];
- } else{
- return "";
- }
- },
- 'write': function(value) {
- self.selectedServer(value);
- }
- });
- self.database = ko.computed({
- 'read': function() {
- if (self.databases) {
- return self.databases()[self.selectedDatabase()];
- } else{
- return "";
- }
- },
- 'write': function(value) {
- self.selectedDatabase(self.databases.indexOf(value));
- }
- });
- self.selectedServer.subscribe(function(value) {
- self.fetchDatabases();
- });
- self.updateResults = function(results) {
- var rows = [];
- self.columns(results.columns);
- $.each(results.rows, function(i, result_row) {
- var row = [];
- $.each(self.columns(), function(j, column) {
- row.push(result_row[column]);
- });
- rows.push(row);
- });
- self.rows(rows);
- };
- self.updateServers = function(servers) {
- self.servers(servers);
- if (servers) {
- self.selectedServer(Object.keys(servers)[0]);
- }
- };
- self.updateDatabases = function(databases) {
- self.databases(databases);
- self.selectedDatabase.valueHasMutated();
- };
- self.updateQuery = function(design) {
- self.query.query(design.query);
- self.query.id(design.id);
- self.query.name(design.name);
- self.query.description(design.desc);
- self.database(design.database);
- self.server(design.server);
- };
- self.chooseServer = function(value, e) {
- self.selectedServer(value);
- };
- self.chooseDatabase = function(value, e) {
- self.selectedDatabase(self.databases.indexOf(value));
- };
- self.explainQuery = function() {
- var data = ko.mapping.toJS(self.query);
- data.database = self.database();
- data.server = self.selectedServer();
- var request = {
- url: '/rdbms/api/explain/',
- dataType: 'json',
- type: 'POST',
- success: function(data) {
- if (data.status === 0) {
- $(document).trigger('explain.query', data);
- self.updateResults(data.results);
- self.query.id(data.design);
- $(document).trigger('explained.query', data);
- } else {
- self.query.errors.removeAll();
- self.query.errors.push(data.message);
- }
- },
- error: $.noop,
- data: data
- };
- $.ajax(request);
- };
- self.fetchQuery = function(id) {
- var _id = id || self.query.id();
- if (_id && _id != -1) {
- var request = {
- url: '/rdbms/api/query/' + _id + '/get',
- dataType: 'json',
- type: 'GET',
- success: function(data) {
- self.updateQuery(data.design);
- },
- error: $.noop
- };
- $.ajax(request);
- }
- };
- self.saveQuery = function() {
- var self = this;
- if (self.query.query() && self.query.name()) {
- var data = ko.mapping.toJS(self.query);
- data['desc'] = data['description'];
- data['server'] = self.selectedServer();
- data['database'] = self.database();
- var url = '/rdbms/api/query/';
- if (self.query.id() && self.query.id() != -1) {
- url += self.query.id() + '/';
- }
- var request = {
- url: url,
- dataType: 'json',
- type: 'POST',
- success: function(data) {
- $(document).trigger('saved.query', data);
- },
- error: function() {
- $(document).trigger('error.query');
- },
- data: data
- };
- $.ajax(request);
- }
- };
- self.executeQuery = function() {
- var data = ko.mapping.toJS(self.query);
- data.database = self.database();
- data.server = self.selectedServer();
- var request = {
- url: '/rdbms/api/execute/',
- dataType: 'json',
- type: 'POST',
- success: function(data) {
- if (data.status === 0) {
- $(document).trigger('execute.query', data);
- self.updateResults(data.results);
- self.query.id(data.design);
- $(document).trigger('executed.query', data);
- } else {
- self.query.errors.removeAll();
- self.query.errors.push(data.message);
- }
- },
- error: $.noop,
- data: data
- };
- $.ajax(request);
- };
- self.fetchServers = function() {
- var request = {
- url: '/rdbms/api/servers/',
- dataType: 'json',
- type: 'GET',
- success: function(data) {
- self.updateServers(data.servers);
- self.fetchDatabases();
- },
- error: $.noop
- };
- $.ajax(request);
- };
- self.fetchDatabases = function() {
- if (self.selectedServer()) {
- var request = {
- url: '/rdbms/api/servers/' + self.selectedServer() + '/databases/',
- dataType: 'json',
- type: 'GET',
- success: function(data) {
- self.updateDatabases(data.databases);
- },
- error: $.noop
- };
- $.ajax(request);
- }
- };
- }
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