Package io.crate.planner.projection

Examples of io.crate.planner.projection.TopNProjection

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        assertThat(chain.shardProjectors.size(), is(2));
    }

    @Test
    public void testWith2ShardProjections() throws Exception {
        TopNProjection topN = new TopNProjection(0, 1);
        GroupProjection groupProjection1 = new GroupProjection(
                Arrays.<DataTypeSymbol>asList(Literal.newLiteral(true)),
                Arrays.asList(countAggregation()));
        groupProjection1.setRequiredGranularity(RowGranularity.SHARD);
        GroupProjection groupProjection2 = new GroupProjection(
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        assertThat(chain.shardProjectors.size(), is(2));
    }

    @Test
    public void testWithoutShardProjections() throws Exception {
        TopNProjection topN = new TopNProjection(0, 1);
        GroupProjection groupProjection = new GroupProjection(
                Arrays.<DataTypeSymbol>asList(Literal.newLiteral(true)),
                Arrays.asList(countAggregation()));
        ShardProjectorChain chain = new ShardProjectorChain(2, ImmutableList.of(groupProjection, topN), projectionToProjectorVisitor);
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    }

    @Test
    public void testZeroShards() throws Exception {
        TopNProjection topN = new TopNProjection(0, 1);
        GroupProjection groupProjection = new GroupProjection(
                Arrays.<DataTypeSymbol>asList(Literal.newLiteral(true)),
                Arrays.asList(countAggregation()));
        ShardProjectorChain chain = new ShardProjectorChain(0, ImmutableList.of(groupProjection, topN), projectionToProjectorVisitor);
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                    orderBySymbols.add(new InputColumn(node.outputs().size() + orderBySymbols.size()));
                } else {
                    orderBySymbols.add(new InputColumn(i));
                }
            }
            TopNProjection topNProjection = new TopNProjection(
                    com.google.common.base.Objects.firstNonNull(node.limit(), Constants.DEFAULT_SELECT_LIMIT),
                    node.offset(),
                    orderBySymbols,
                    node.reverseFlags(),
                    node.nullsFirst()
            );
            topNProjection.outputs(genInputColumns(node.outputs().size()));
            projectorChain = new FlatProjectorChain(
                    Arrays.<Projection>asList(topNProjection),
                    projectionToProjectorVisitor
            );
        }
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Related Classes of io.crate.planner.projection.TopNProjection

  • io.crate.executor.task.LocalMergeTaskTest
  • io.crate.executor.transport.merge.DistributedResultRequestTest
  • io.crate.executor.transport.task.DistributedMergeTaskTest
  • io.crate.executor.transport.task.elasticsearch.ESGetTask
  • io.crate.executor.transport.TransportExecutorTest
  • io.crate.operation.collect.ShardProjectorChainTest
  • io.crate.operation.merge.MergeOperationTest
  • io.crate.operation.projectors.ProjectionToProjectorVisitorTest
  • io.crate.planner.node.MergeNodeTest
  • io.crate.planner.node.PlanNodeStreamerVisitorTest
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