81 lines
2.0 KiB
JavaScript
81 lines
2.0 KiB
JavaScript
// Cannot implicitly shard accessed collections because the "jsMode" option to the "mapReduce"
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// command cannot be used on a sharded collection.
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// @tags: [assumes_unsharded_collection, does_not_support_stepdowns]
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t = db.mr2;
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t.drop();
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t.save({comments: [{who: "a", txt: "asdasdasd"}, {who: "b", txt: "asdasdasdasdasdasdas"}]});
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t.save({comments: [{who: "b", txt: "asdasdasdaaa"}, {who: "c", txt: "asdasdasdaasdasdas"}]});
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function m() {
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for (var i = 0; i < this.comments.length; i++) {
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var c = this.comments[i];
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emit(c.who, {totalSize: c.txt.length, num: 1});
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}
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}
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function r(who, values) {
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var n = {totalSize: 0, num: 0};
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for (var i = 0; i < values.length; i++) {
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n.totalSize += values[i].totalSize;
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n.num += values[i].num;
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}
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return n;
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}
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function reformat(r) {
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var x = {};
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var cursor;
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if (r.results)
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cursor = r.results;
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else
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cursor = r.find();
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cursor.forEach(function(z) {
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x[z._id] = z.value;
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});
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return x;
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}
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function f(who, res) {
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res.avg = res.totalSize / res.num;
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return res;
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}
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res = t.mapReduce(m, r, {finalize: f, out: "mr2_out"});
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printjson(res);
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x = reformat(res);
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assert.eq(9, x.a.avg, "A1");
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assert.eq(16, x.b.avg, "A2");
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assert.eq(18, x.c.avg, "A3");
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res.drop();
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// inline does needs to exist - so set it to false to make sure the code is just checking for
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// existence
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res = t.mapReduce(m, r, {finalize: f, out: {inline: 0}});
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printjson(res);
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x = reformat(res);
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assert.eq(9, x.a.avg, "B1");
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assert.eq(16, x.b.avg, "B2");
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assert.eq(18, x.c.avg, "B3");
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res.drop();
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assert(!("result" in res), "B4");
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res = t.mapReduce(m, r, {finalize: f, out: "mr2_out", jsMode: true});
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printjson(res);
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x = reformat(res);
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assert.eq(9, x.a.avg, "A1");
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assert.eq(16, x.b.avg, "A2");
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assert.eq(18, x.c.avg, "A3");
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res.drop();
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res = t.mapReduce(m, r, {finalize: f, out: {inline: 5}, jsMode: true});
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printjson(res);
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x = reformat(res);
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assert.eq(9, x.a.avg, "B1");
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assert.eq(16, x.b.avg, "B2");
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assert.eq(18, x.c.avg, "B3");
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res.drop();
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assert(!("result" in res), "B4");
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