75 lines
1.5 KiB
JavaScript
75 lines
1.5 KiB
JavaScript
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t = db.mr3;
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t.drop();
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t.save({x: 1, tags: ["a", "b"]});
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t.save({x: 2, tags: ["b", "c"]});
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t.save({x: 3, tags: ["c", "a"]});
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t.save({x: 4, tags: ["b", "c"]});
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m = function(n, x) {
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x = x || 1;
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this.tags.forEach(function(z) {
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for (var i = 0; i < x; i++)
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emit(z, {count: n || 1});
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});
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};
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r = function(key, values) {
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var total = 0;
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for (var i = 0; i < values.length; i++) {
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total += values[i].count;
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}
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return {count: total};
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};
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res = t.mapReduce(m, r, {out: "mr3_out"});
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z = res.convertToSingleObject();
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assert.eq(3, Object.keySet(z).length, "A1");
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assert.eq(2, z.a.count, "A2");
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assert.eq(3, z.b.count, "A3");
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assert.eq(3, z.c.count, "A4");
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res.drop();
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res = t.mapReduce(m, r, {out: "mr3_out", mapparams: [2, 2]});
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z = res.convertToSingleObject();
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assert.eq(3, Object.keySet(z).length, "B1");
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assert.eq(8, z.a.count, "B2");
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assert.eq(12, z.b.count, "B3");
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assert.eq(12, z.c.count, "B4");
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res.drop();
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// -- just some random tests
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realm = m;
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m = function() {
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emit(this._id, 1);
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};
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res = t.mapReduce(m, r, {out: "mr3_out"});
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res.drop();
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m = function() {
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emit(this._id, this.xzz.a);
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};
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before = db.getCollectionNames().length;
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assert.throws(function() {
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t.mapReduce(m, r, {out: "mr3_out"});
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});
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assert.eq(before, db.getCollectionNames().length, "after throw crap");
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m = realm;
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r = function(k, v) {
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return v.x.x.x;
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};
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before = db.getCollectionNames().length;
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assert.throws(function() {
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t.mapReduce(m, r, "mr3_out");
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});
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assert.eq(before, db.getCollectionNames().length, "after throw crap");
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