Examples with VectorSizeInspector org.apache.druid.segment.vector.VectorSizeInspector used on opensource projects

Example 1 with VectorSizeInspector

use of org.apache.druid.segment.vector.VectorSizeInspector in project druid by druid-io.

the class AlwaysTwoVectorizedVirtualColumn method makeMultiValueVectorDimensionSelector.

@Override
public MultiValueDimensionVectorSelector makeMultiValueVectorDimensionSelector(DimensionSpec dimensionSpec, VectorColumnSelectorFactory factory) {
    Assert.assertEquals(outputName, dimensionSpec.getOutputName());
    final IndexedInts[] rowVector = new IndexedInts[factory.getReadableVectorInspector().getMaxVectorSize()];
    Arrays.fill(rowVector, new ArrayBasedIndexedInts(new int[] { 0, 0 }));
    return new MultiValueDimensionVectorSelector() {

        private final VectorSizeInspector inspector = factory.getReadableVectorInspector();

        @Override
        public IndexedInts[] getRowVector() {
            return rowVector;
        }

        @Override
        public int getValueCardinality() {
            return dictionaryEncoded ? 1 : CARDINALITY_UNKNOWN;
        }

        @Nullable
        @Override
        public String lookupName(int id) {
            return "2";
        }

        @Override
        public boolean nameLookupPossibleInAdvance() {
            return dictionaryEncoded;
        }

        @Nullable
        @Override
        public IdLookup idLookup() {
            return null;
        }

        @Override
        public int getMaxVectorSize() {
            return inspector.getMaxVectorSize();
        }

        @Override
        public int getCurrentVectorSize() {
            return inspector.getCurrentVectorSize();
        }
    };
}