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change union to match intersect

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accept aggregate and withscores
This commit is contained in:
barisusakli
2016-09-08 17:59:59 +03:00
parent 8d897d8dcf
commit eabb745116
3 changed files with 46 additions and 28 deletions
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42
src/database/mongo/sorted.js
View File

@@ -474,48 +474,64 @@ module.exports = function(db, module) {
});
};
module.getSortedSetUnion = function(sets, start, stop, callback) {
getSortedSetUnion(sets, 1, start, stop, callback);
module.getSortedSetUnion = function(params, callback) {
params.sort = 1;
getSortedSetUnion(params, callback);
};
module.getSortedSetRevUnion = function(sets, start, stop, callback) {
getSortedSetUnion(sets, -1, start, stop, callback);
module.getSortedSetRevUnion = function(params, callback) {
params.sort = -1;
getSortedSetUnion(params, callback);
};
function getSortedSetUnion(sets, sort, start, stop, callback) {
if (!Array.isArray(sets) || !sets.length) {
function getSortedSetUnion(params, callback) {
if (!Array.isArray(params.sets) || !params.sets.length) {
return callback();
}
var limit = stop - start + 1;
var limit = params.stop - params.start + 1;
if (limit <= 0) {
limit = 0;
}
var aggregate = {};
if (params.aggregate) {
aggregate['$' + params.aggregate.toLowerCase()] = '$score';
} else {
aggregate.$sum = '$score';
}
var pipeline = [
{ $match: { _key: {$in: sets}} },
{ $group: { _id: {value: '$value'}, totalScore: {$sum : "$score"}} },
{ $sort: { totalScore: sort} }
{ $match: { _key: {$in: params.sets}} },
{ $group: { _id: {value: '$value'}, totalScore: aggregate} },
{ $sort: { totalScore: params.sort} }
];
if (start) {
pipeline.push({ $skip: start });
if (params.start) {
pipeline.push({ $skip: params.start });
}
if (limit > 0) {
pipeline.push({ $limit: limit });
}
pipeline.push({ $project: { _id: 0, value: '$_id.value' }});
var project = { _id: 0, value: '$_id.value' };
if (params.withScores) {
project.score = '$totalScore';
}
pipeline.push({ $project: project });
db.collection('objects').aggregate(pipeline, function(err, data) {
if (err || !data) {
return callback(err);
}
if (!params.withScores) {
data = data.map(function(item) {
return item.value;
});
}
callback(null, data);
});
}

22
src/database/redis/sorted.js
View File

@@ -232,32 +232,34 @@ module.exports = function(redisClient, module) {
multi.exec(callback);
};
module.getSortedSetUnion = function(sets, start, stop, callback) {
sortedSetUnion('zrange', sets, start, stop, false, callback);
module.getSortedSetUnion = function(params, callback) {
params.method = 'zrange';
sortedSetUnion(params, callback);
};
module.getSortedSetRevUnion = function(sets, start, stop, callback) {
sortedSetUnion('zrevrange', sets, start, stop, false, callback);
module.getSortedSetRevUnion = function(params, callback) {
params.method = 'zrevrange';
sortedSetUnion(params, callback);
};
function sortedSetUnion(method, sets, start, stop, withScores, callback) {
function sortedSetUnion(params, callback) {
var tempSetName = 'temp_' + Date.now();
var params = [tempSetName, start, stop];
if (withScores) {
var rangeParams = [tempSetName, params.start, params.stop];
if (params.withScores) {
params.push('WITHSCORES');
}
var multi = redisClient.multi();
multi.zunionstore([tempSetName, sets.length].concat(sets));
multi[method](params);
multi.zunionstore([tempSetName, params.sets.length].concat(params.sets));
multi[params.method](rangeParams);
multi.del(tempSetName);
multi.exec(function(err, results) {
if (err) {
return callback(err);
}
if (!withScores) {
if (!params.withScores) {
return callback(null, results ? results[1] : null);
}
results = results[1] || [];

4
tests/database/sorted.js
View File

@@ -438,7 +438,7 @@ describe('Sorted Set methods', function() {
describe('getSortedSetUnion()', function() {
it('should return an array of values from both sorted sets sorted by scores lowest to highest', function(done) {
db.getSortedSetUnion(['sortedSetTest2', 'sortedSetTest3'], 0, -1, function(err, values) {
db.getSortedSetUnion({sets: ['sortedSetTest2', 'sortedSetTest3'], start: 0, stop: -1}, function(err, values) {
assert.equal(err, null);
assert.equal(arguments.length, 2);
assert.deepEqual(values, ['value1', 'value2', 'value4']);
@@ -449,7 +449,7 @@ describe('Sorted Set methods', function() {
describe('getSortedSetRevUnion()', function() {
it('should return an array of values from both sorted sets sorted by scores highest to lowest', function(done) {
db.getSortedSetRevUnion(['sortedSetTest2', 'sortedSetTest3'], 0, -1, function(err, values) {
db.getSortedSetRevUnion({sets: ['sortedSetTest2', 'sortedSetTest3'], start: 0, stop: -1}, function(err, values) {
assert.equal(err, null);
assert.equal(arguments.length, 2);
assert.deepEqual(values, ['value4', 'value2', 'value1']);