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loopback-datasource-juggler
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Update lib/adapters/memory.js 

Multiple sorting with full support asc/desc
This commit is contained in:
Mikxail 2012-09-12 15:26:20 +04:00
parent ffbc9482f7
commit 2baabb624f
1 changed files with 14 additions and 20 deletions
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34
lib/adapters/memory.js
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@ -70,29 +70,20 @@ Memory.prototype.all = function all(model, filter, callback) {
// do we need some sorting?
if (filter.order) {
var props = this._models[model].properties;
var allNumeric = true;
var orders = filter.order;
var reverse = false;
if (typeof filter.order === "string") {
orders = [filter.order];
}
orders.forEach(function (key, i) {
var reverse = 1;
var m = key.match(/\s+(A|DE)SC$/i);
if (m) {
key = key.replace(/\s+(A|DE)SC/i, '');
if (m[1] === 'DE') reverse = true;
}
orders[i] = key;
if (props[key].type.name !== 'Number' && props[key].type.name !== 'Date') {
allNumeric = false;
if (m[1] === 'DE') reverse = -1;
}
orders[i] = {"key": key, "reverse": reverse};
});
if (allNumeric) {
nodes = nodes.sort(numerically.bind(orders));
} else {
nodes = nodes.sort(literally.bind(orders));
}
if (reverse) nodes = nodes.reverse();
nodes = nodes.sort(sorting.bind(orders));
}
}
@ -100,13 +91,16 @@ Memory.prototype.all = function all(model, filter, callback) {
callback(null, nodes);
});
function numerically(a, b) {
return a[this[0]] - b[this[0]];
}
function literally(a, b) {
return a[this[0]] > b[this[0]];
}
function sorting(a, b) {
for (var i=0, l=this.length; i<l; i++) {
if (a[this[i].key] > b[this[i].key]) {
return 1*this[i].reverse;
} else if (a[this[i].key] < b[this[i].key]) {
return -1*this[i].reverse;
}
}
return 0;
}
};
function applyFilter(filter) {