diff options
author | Christopher Lenz <cmlenz@apache.org> | 2008-03-28 23:32:19 +0000 |
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committer | Christopher Lenz <cmlenz@apache.org> | 2008-03-28 23:32:19 +0000 |
commit | 544a38dd45f6a58d34296c6c768afd086eb2ac70 (patch) | |
tree | c84cc02340b06aae189cff0dbfaee698f273f1f5 /share/www/script/couch.js | |
parent | 804cbbe033b8e7a3e8d7058aaf31bdf69ef18ac5 (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')
-rw-r--r-- | share/www/script/couch.js | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/share/www/script/couch.js b/share/www/script/couch.js new file mode 100644 index 00000000..9815882a --- /dev/null +++ b/share/www/script/couch.js @@ -0,0 +1,205 @@ +// 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; +} |