Package org.mongojack.aggregation

Examples of org.mongojack.aggregation.GroupAggregation

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        coll.insert(new MockObject("foo", 6));
        coll.insert(new MockObject("bar", 101));
        coll.insert(new MockObject("bar", 102));

        AggregationBuilder<MockObjectAggregationResult> builder = new AggregationBuilder<MockObjectAggregationResult>();
        builder.group(new GroupAggregation("string").withSum("integer", "integer")).sort(new SortAggregation().descending("string"));

        AggregationResult<MockObjectAggregationResult> aggregationResult = coll.aggregate(builder.build(MockObjectAggregationResult.class));

        Assert.assertEquals(2, aggregationResult.results().size());
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        coll.insert(new MockObject("bar", 101));
        coll.insert(new MockObject("bar", 102));

        AggregationBuilder<MockObjectAggregationResult> builder = new AggregationBuilder<MockObjectAggregationResult>();
        builder.match(new MatchAggregation("string", "foo"))
                .group(new GroupAggregation("string").withMin("integer", "integer"));

        AggregationResult<MockObjectAggregationResult> aggregationResult = coll.aggregate(builder.build(MockObjectAggregationResult.class));

        Assert.assertEquals(1, aggregationResult.results().size());
        Assert.assertEquals("foo", aggregationResult.results().get(0)._id);
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        coll.insert(new MockObject("foo", 6));
        coll.insert(new MockObject("bar", 101));
        coll.insert(new MockObject("bar", 102));

        AggregationBuilder<MockObjectAggregationResult> builder = new AggregationBuilder<MockObjectAggregationResult>();
        builder.group(new GroupAggregation("string").withSum("integer", "integer"))
                .project(new ProjectAggregation().set("integer", "string"));

        AggregationResult<MockObjectAggregationResult> aggregationResult = coll.aggregate(builder.build(MockObjectAggregationResult.class));

        Assert.assertEquals(2, aggregationResult.results().size());
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        coll.insert(mock);

        AggregationBuilder<MockObjectAggregationResult> builder = new AggregationBuilder<MockObjectAggregationResult>();
        builder.unwind(new UnwindAggregation("simpleList"))
                .group(new GroupAggregation("string").withSum("integer", "integer"));

        AggregationResult<MockObjectAggregationResult> aggregationResult = coll.aggregate(builder.build(MockObjectAggregationResult.class));

        Assert.assertEquals(1, aggregationResult.results().size());
        Assert.assertEquals(15, aggregationResult.results().get(0).integer.intValue());
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        coll.insert(new MockObject("bar", 1));
        coll.insert(new MockObject("baz", 1));
        coll.insert(new MockObject("qux", 1));

        AggregationBuilder<MockObjectAggregationResult> builder = new AggregationBuilder<MockObjectAggregationResult>();
        builder.group(new GroupAggregation("string"))
                .limit(new LimitAggregation(2));

        AggregationResult<MockObjectAggregationResult> aggregationResult = coll.aggregate(builder.build(MockObjectAggregationResult.class));

        Assert.assertEquals(2, aggregationResult.results().size());
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Related Classes of org.mongojack.aggregation.GroupAggregation

  • com.mongodb.BasicDBObject
  • com.mongodb.DBObject
  • org.mongojack.TestAggregationBuilder
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