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authorChristopher Lenz <cmlenz@apache.org>2008-03-28 23:32:19 +0000
committerChristopher Lenz <cmlenz@apache.org>2008-03-28 23:32:19 +0000
commit544a38dd45f6a58d34296c6c768afd086eb2ac70 (patch)
treec84cc02340b06aae189cff0dbfaee698f273f1f5 /share/www/script/couch.js
parent804cbbe033b8e7a3e8d7058aaf31bdf69ef18ac5 (diff)
Imported trunk.
git-svn-id: https://svn.apache.org/repos/asf/incubator/couchdb/trunk@642432 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'share/www/script/couch.js')
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1 files changed, 205 insertions, 0 deletions
diff --git a/share/www/script/couch.js b/share/www/script/couch.js
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+// Licensed 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.
+
+// A simple class to represent a database. Uses XMLHttpRequest to interface with
+// the CouchDB server.
+
+function CouchDB(name) {
+ this.name = name
+ this.uri = "/" + encodeURIComponent(name) + "/";
+ request = CouchDB.request;
+
+ // Creates the database on the server
+ this.createDb = function() {
+ var req = request("PUT", this.uri);
+ var result = JSON.parse(req.responseText);
+ if (req.status != 201)
+ throw result;
+ return result;
+ }
+
+ // Deletes the database on the server
+ this.deleteDb = function() {
+ var req = request("DELETE", this.uri);
+ if (req.status == 404)
+ return false;
+ var result = JSON.parse(req.responseText);
+ if (req.status != 202)
+ throw result;
+ return result;
+ }
+
+ // Save a document to the database
+ this.save = function(doc, options) {
+ var req;
+ if (doc._id == undefined)
+ req = request("POST", this.uri + encodeOptions(options), {
+ body: JSON.stringify(doc)
+ });
+ else
+ req = request("PUT", this.uri + encodeURIComponent(doc._id) + encodeOptions(options), {
+ body: JSON.stringify(doc)
+ });
+ var result = JSON.parse(req.responseText);
+ if (req.status != 201)
+ throw result;
+ // set the _id and _rev members on the input object, for caller convenience.
+ doc._id = result.id;
+ doc._rev = result.rev;
+ return result;
+ }
+
+ // Open a document from the database
+ this.open = function(docId, options) {
+ var req = request("GET", this.uri + encodeURIComponent(docId) + encodeOptions(options));
+ if (req.status == 404)
+ return null;
+ var result = JSON.parse(req.responseText);
+ if (req.status != 200)
+ throw result;
+ return result;
+ }
+
+ // Deletes a document from the database
+ this.deleteDoc = function(doc) {
+ var req = request("DELETE", this.uri + encodeURIComponent(doc._id) + "?rev=" + doc._rev);
+ var result = JSON.parse(req.responseText);
+ if (req.status != 202)
+ throw result;
+ doc._rev = result.rev; //record rev in input document
+ doc._deleted = true;
+ return result;
+ }
+
+ this.bulkSave = function(docs, options) {
+ var req = request("POST", this.uri + "_bulk_docs" + encodeOptions(options), {
+ body: JSON.stringify({"docs": docs})
+ });
+ var result = JSON.parse(req.responseText);
+ if (req.status != 201)
+ throw result;
+ return result;
+ }
+
+ // Applies the map function to the contents of database and returns the results.
+ this.query = function(mapFun, options) {
+ if (typeof(mapFun) != "string")
+ mapFun = mapFun.toSource ? mapFun.toSource() : "(" + mapFun.toString() + ")";
+ var req = request("POST", this.uri + "_temp_view" + encodeOptions(options), {
+ headers: {"Content-Type": "text/javascript"},
+ body: mapFun
+ });
+ var result = JSON.parse(req.responseText);
+ if (req.status != 200)
+ throw result;
+ return result;
+ }
+
+ this.view = function(viewname, options) {
+ var req = request("GET", this.uri + "_view/" + viewname + encodeOptions(options));
+ if (req.status == 404)
+ return null;
+ var result = JSON.parse(req.responseText);
+ if (req.status != 200)
+ throw result;
+ return result;
+ }
+
+ // gets information about the database
+ this.info = function() {
+ var req = request("GET", this.uri);
+ var result = JSON.parse(req.responseText);
+ if (req.status != 200)
+ throw result;
+ return result;
+ }
+
+ this.allDocs = function(options) {
+ var req = request("GET", this.uri + "_all_docs" + encodeOptions(options));
+ var result = JSON.parse(req.responseText);
+ if (req.status != 200)
+ throw result;
+ return result;
+ }
+
+ // Convert a options object to an url query string.
+ // ex: {key:'value',key2:'value2'} becomes '?key="value"&key2="value2"'
+ function encodeOptions(options) {
+ var buf = []
+ if (typeof(options) == "object" && options !== null) {
+ for (var name in options) {
+ if (!options.hasOwnProperty(name)) continue;
+ var value = options[name];
+ if (name == "key" || name == "startkey" || name == "endkey") {
+ value = toJSON(value);
+ }
+ buf.push(encodeURIComponent(name) + "=" + encodeURIComponent(value));
+ }
+ }
+ if (!buf.length) {
+ return "";
+ }
+ return "?" + buf.join("&");
+ }
+
+ function toJSON(obj) {
+ return obj !== null ? JSON.stringify(obj) : null;
+ }
+}
+
+CouchDB.allDbs = function() {
+ var req = CouchDB.request("GET", "/_all_dbs");
+ var result = JSON.parse(req.responseText);
+ if (req.status != 200)
+ throw result;
+ return result;
+}
+
+CouchDB.getVersion = function() {
+ var req = CouchDB.request("GET", "/");
+ var result = JSON.parse(req.responseText);
+ if (req.status != 200)
+ throw result;
+ return result.version;
+}
+
+CouchDB.replicate = function(source, target) {
+ var req = CouchDB.request("POST", "/_replicate", {
+ body: JSON.stringify({source: source, target: target})
+ });
+ var result = JSON.parse(req.responseText);
+ if (req.status != 200)
+ throw result;
+ return result;
+}
+
+CouchDB.request = function(method, uri, options) {
+ options = options || {};
+ var req = null;
+ if (typeof(XMLHttpRequest) != "undefined") {
+ req = new XMLHttpRequest();
+ } else if (typeof(ActiveXObject) != "undefined") {
+ req = new ActiveXObject("Microsoft.XMLHTTP");
+ } else {
+ throw new Error("No XMLHTTPRequest support detected");
+ }
+ req.open(method, uri, false);
+ if (options.headers) {
+ var headers = options.headers;
+ for (var headerName in headers) {
+ if (!headers.hasOwnProperty(headerName)) continue;
+ req.setRequestHeader(headerName, headers[headerName]);
+ }
+ }
+ req.send(options.body || null);
+ return req;
+}