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add findKeys method for CouchDB #79

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add findKeys method for CouchDB #79

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51 changes: 50 additions & 1 deletion couch_db.js
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Original file line number Diff line number Diff line change
Expand Up @@ -30,10 +30,41 @@ exports.database = function(settings)
this.settings.json = false;
}

var insertDesignDocs = function insertDesignDocs()
{
// the regexp is the same as this.createFindRegex('pad:*', '*:*:*');
// copied here because we can't use this.createFindRegex method in couch
var designDoc = {
views: {
"findAllPads": {
map: function (doc, req) {
if (/(?=^pad:.*$)(?!.*:.*:.*$)/.test(doc._id)){
emit(doc._id.replace('pad:', ''), doc);
}
},
},
},
};

var handleError = function handleError(er) {
if (er) throw new Error(er);
};

// Always ensure that couchDb has the latest version of the design document
this.db.getDoc('_design/ueberDb', function (er, doc) {
if (er && er.error === 'not_found') return this.db.saveDesign('ueberDb', designDoc, handleError);
if (er) throw new Error(er);
designDoc._rev = doc._rev;
this.db.saveDesign('ueberDb', designDoc, handleError);
}.bind(this));

};

exports.database.prototype.init = function(callback)
{
this.client = couch.createClient(this.settings.port, this.settings.host, this.settings.user, this.settings.pass, this.settings.maxListeners);
this.client = couch.createClient(this.settings.port, this.settings.host, this.settings.user, this.settings.password, this.settings.maxListeners);
this.db = this.client.db(this.settings.database);
insertDesignDocs.call(this);
callback();
}

Expand All @@ -52,6 +83,24 @@ exports.database.prototype.get = function (key, callback)
});
}

exports.database.prototype.findKeys = function (key, notKey, callback)
{
var findKey = this.createFindRegex(key, notKey);
this.db.view('ueberDb', 'findAllPads', function (er, result) {
if (er) return callback(er, null);
result = result
.rows
.filter(function (pad) {
// in case of findKeys is used for a more smaller portion thant the basic wildcard
return findKey.test(pad.value._id);
})
.map(function (pad) {
return pad.key;
});
callback(null, result);
});
}

exports.database.prototype.set = function (key, value, callback)
{
var _this = this;
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15 changes: 8 additions & 7 deletions package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -9,13 +9,14 @@
{ "name": "spcsser"}
],
"dependencies" : {
"mysql" : ">=2.5.1",
"dirty" : "0.9.x",
"async" : "0.1.15",
"channels" : "0.0.2",
"redis" : ">=0.12.1",
"pg" : ">=4.0.0-beta2",
"helenus" : "0.6.10"
"mysql" : ">=2.5.1",
"dirty" : "0.9.x",
"async" : "0.1.15",
"channels" : "0.0.2",
"redis" : ">=0.12.1",
"pg" : ">=4.0.0-beta2",
"helenus" : "0.6.10",
"felix-couchdb" : "^1.0.7"
},
"devDependencies": {
"log4js" : "0.4.1",
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