Examples of org.apache.drill.exec.vector.IntVector$Accessor

org.apache.drill.exec.vector.IntVector
Int implements a vector of fixed width values. Elements in the vector are accessed by position, starting from the logical start of the vector. Values should be pushed onto the vector sequentially, but may be randomly accessed. The width of each element is 4 byte(s) The equivalent Java primitive is 'int' NB: this class is automatically generated from ValueVectorTypes.tdd using FreeMarker.

    Drillbit bit = new Drillbit(config, serviceSet);
    bit.run();
    DrillbitContext context = bit.getContext();


    MaterializedField intField = MaterializedField.create(new SchemaPath("int", ExpressionPosition.UNKNOWN), Types.required(TypeProtos.MinorType.INT));
    IntVector intVector = (IntVector)TypeHelper.getNewVector(intField, context.getAllocator());
    MaterializedField binField = MaterializedField.create(new SchemaPath("binary", ExpressionPosition.UNKNOWN), Types.required(TypeProtos.MinorType.VARBINARY));
    VarBinaryVector binVector = (VarBinaryVector)TypeHelper.getNewVector(binField, context.getAllocator());
    AllocationHelper.allocate(intVector, 4, 4);
    AllocationHelper.allocate(binVector, 4, 5);
    vectorList.add(intVector);
    vectorList.add(binVector);


    intVector.getMutator().setSafe(0, 0); binVector.getMutator().setSafe(0, "ZERO".getBytes());
    intVector.getMutator().setSafe(1, 1); binVector.getMutator().setSafe(1, "ONE".getBytes());
    intVector.getMutator().setSafe(2, 2); binVector.getMutator().setSafe(2, "TWO".getBytes());
    intVector.getMutator().setSafe(3, 3); binVector.getMutator().setSafe(3, "THREE".getBytes());
    intVector.getMutator().setValueCount(4);
    binVector.getMutator().setValueCount(4);


    VectorContainer container = new VectorContainer();
    container.addCollection(vectorList);
    container.setRecordCount(4);

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    boolean oneIsOne = false;
    int size = 0;
    int[] sizes = {1,2,0,6};


    while(exec.next()){
      IntVector c1 = exec.getValueVectorById(new SchemaPath("cnt", ExpressionPosition.UNKNOWN), IntVector.class);
      BitVector c2 = exec.getValueVectorById(new SchemaPath("has_min", ExpressionPosition.UNKNOWN), BitVector.class);


      for(int i =0; i < exec.getRecordCount(); i++){
        int curSize = sizes[size % sizes.length];
        assertEquals(curSize, c1.getAccessor().get(i));
        switch(curSize){
        case 1:
          assertEquals(oneIsOne, 1 == c2.getAccessor().get(i));
          oneIsOne = !oneIsOne;
          break;

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        batch.getValueVectorId(new SchemaPath("alpha", ExpressionPosition.UNKNOWN));
        result = tfid;
        batch.getValueAccessorById(IntVector.class, tfid.getFieldIds());
        result = wrapper;
        wrapper.getValueVector();
        result = new IntVector(null, null);
      }


    };
    System.out.println(getExpressionCode("1 + 1", batch));
  }

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public class TestLoad extends ExecTest {


  @Test
  public void testLoadValueVector() throws Exception {
    BufferAllocator allocator = new TopLevelAllocator();
    ValueVector fixedV = new IntVector(MaterializedField.create(new SchemaPath("ints", ExpressionPosition.UNKNOWN),
        Types.required(MinorType.INT)), allocator);
    ValueVector varlenV = new VarCharVector(MaterializedField.create(
        new SchemaPath("chars", ExpressionPosition.UNKNOWN), Types.required(MinorType.VARCHAR)), allocator);
    ValueVector nullableVarlenV = new NullableVarCharVector(MaterializedField.create(new SchemaPath("chars",
        ExpressionPosition.UNKNOWN), Types.optional(MinorType.VARCHAR)), allocator);

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        FunctionImplementationRegistry registry = new FunctionImplementationRegistry(c);
        FragmentContext context = new FragmentContext(bitContext, BitControl.PlanFragment.getDefaultInstance(), connection, registry);
        SimpleRootExec exec = new SimpleRootExec(ImplCreator.getExec(context, (FragmentRoot) plan.getSortedOperators(false).iterator().next()));


        while(exec.next()) {
            IntVector intMulVector = exec.getValueVectorById(new SchemaPath("INTMUL", ExpressionPosition.UNKNOWN), IntVector.class);
            Float8Vector floatMulVector = exec.getValueVectorById(new SchemaPath("FLOATMUL", ExpressionPosition.UNKNOWN), Float8Vector.class);
            IntVector intAddVector = exec.getValueVectorById(new SchemaPath("INTADD", ExpressionPosition.UNKNOWN), IntVector.class);
            Float8Vector floatAddVector = exec.getValueVectorById(new SchemaPath("FLOATADD", ExpressionPosition.UNKNOWN), Float8Vector.class);
            assertEquals(exec.getRecordCount(), 1);
            assertEquals(intMulVector.getAccessor().get(0), 2);
            assertEquals(floatMulVector.getAccessor().get(0), (1.1 * 2.2), 0);
            assertEquals(intAddVector.getAccessor().get(0), 3);
            assertEquals(floatAddVector.getAccessor().get(0), (1.1 + 2.2), 0);
        }


        if(context.getFailureCause() != null){
            throw context.getFailureCause();

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            v.getMutator().setSafe(j, value);
          }
          break;
        }
        case INT: {
          IntVector v = (IntVector) vector;
          int value = (int) val;
          for (int j = 0; j < recordCount; j++) {
            v.getMutator().setSafe(j, value);
          }
          break;
        }
        case LONG: {
          BigIntVector v = (BigIntVector) vector;
          long value = (long) val;
          for (int j = 0; j < recordCount; j++) {
            v.getMutator().setSafe(j, value);
          }
          break;
        }
        case SHORT: {
          SmallIntVector v = (SmallIntVector) vector;
          short value = (short) val;
          for (int j = 0; j < recordCount; j++) {
            v.getMutator().setSafe(j, value);
          }
          break;
        }
        case VARCHAR:
        case STRING: {
          VarCharVector v = (VarCharVector) vector;
          byte[] value = (byte[]) val;
          for (int j = 0; j < recordCount; j++) {
            v.getMutator().setSafe(j, value);
          }
          break;
        }
        case TIMESTAMP: {
          TimeStampVector v = (TimeStampVector) vector;
          DateTime ts = new DateTime(((Timestamp) val).getTime()).withZoneRetainFields(DateTimeZone.UTC);
          long value = ts.getMillis();
          for (int j = 0; j < recordCount; j++) {
            v.getMutator().setSafe(j, value);
          }
          break;
        }
        case DATE: {
          DateVector v = (DateVector) vector;
          DateTime date = new DateTime(((Date)val).getTime()).withZoneRetainFields(DateTimeZone.UTC);
          long value = date.getMillis();
          for (int j = 0; j < recordCount; j++) {
            v.getMutator().setSafe(j, value);
          }
          break;
        }
        case DECIMAL: {
          VarCharVector v = (VarCharVector) vector;
          byte[] value = ((HiveDecimal) val).toString().getBytes();
          for (int j = 0; j < recordCount; j++) {
            v.getMutator().setSafe(j, value);
          }
          break;
        }
        default:
          throwUnsupportedHiveDataTypeError(pCat.toString());

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            v.getMutator().setSafe(j, value);
          }
          break;
        }
        case INT: {
          IntVector v = (IntVector) vector;
          int value = (int) val;
          for (int j = 0; j < recordCount; j++) {
            v.getMutator().setSafe(j, value);
          }
          break;
        }
        case LONG: {
          BigIntVector v = (BigIntVector) vector;
          long value = (long) val;
          for (int j = 0; j < recordCount; j++) {
            v.getMutator().setSafe(j, value);
          }
          break;
        }
        case SHORT: {
          SmallIntVector v = (SmallIntVector) vector;
          short value = (short) val;
          for (int j = 0; j < recordCount; j++) {
            v.getMutator().setSafe(j, value);
          }
          break;
        }
        case VARCHAR:
        case STRING: {
          VarCharVector v = (VarCharVector) vector;
          byte[] value = (byte[]) val;
          for (int j = 0; j < recordCount; j++) {
            v.getMutator().setSafe(j, value);
          }
          break;
        }
        case TIMESTAMP: {
          TimeStampVector v = (TimeStampVector) vector;
          DateTime ts = new DateTime(((Timestamp) val).getTime()).withZoneRetainFields(DateTimeZone.UTC);
          long value = ts.getMillis();
          for (int j = 0; j < recordCount; j++) {
            v.getMutator().setSafe(j, value);
          }
          break;
        }
        case DATE: {
          DateVector v = (DateVector) vector;
          DateTime date = new DateTime(((Date)val).getTime()).withZoneRetainFields(DateTimeZone.UTC);
          long value = date.getMillis();
          for (int j = 0; j < recordCount; j++) {
            v.getMutator().setSafe(j, value);
          }
          break;
        }
        case DECIMAL: {
          VarCharVector v = (VarCharVector) vector;
          byte[] value = ((HiveDecimal) val).toString().getBytes();
          for (int j = 0; j < recordCount; j++) {
            v.getMutator().setSafe(j, value);
          }
          break;
        }
        default:
          throwUnsupportedHiveDataTypeError(pCat.toString());

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      tableSize = MAXIMUM_CAPACITY;


    // set the new threshold based on the new table size and load factor
    threshold = (int) Math.ceil(tableSize * htConfig.getLoadFactor());


    IntVector newStartIndices = allocMetadataVector(tableSize, EMPTY_SLOT);


    for (int i = 0; i < batchHolders.size(); i++) {
      BatchHolder bh = batchHolders.get(i) ;
      int batchStartIdx = i * BATCH_SIZE;
      bh.rehash(tableSize, newStartIndices, batchStartIdx);

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    }
    return true;
  }


  private IntVector allocMetadataVector(int size, int initialValue) {
    IntVector vector = (IntVector) TypeHelper.getNewVector(dummyIntField, allocator);
    vector.allocateNew(size);
    for (int i=0; i < size; i++) {
      vector.getMutator().setSafe(i, initialValue);
    }
    vector.getMutator().setValueCount(size);
    return vector;
  }

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    private void rehash(int numbuckets, IntVector newStartIndices, int batchStartIdx) {


      logger.debug("Rehashing entries within the batch: {}; batchStartIdx = {}, total numBuckets in hash table = {}.", batchIndex, batchStartIdx, numbuckets);


      int size = links.getAccessor().getValueCount();
      IntVector newLinks = allocMetadataVector(size, EMPTY_SLOT);
      IntVector newHashValues = allocMetadataVector(size, 0);


      for (int i = 0; i <= maxOccupiedIdx; i++) {
        int entryIdxWithinBatch = i;
        int entryIdx = entryIdxWithinBatch + batchStartIdx;
        int hash = hashValues.getAccessor().get(entryIdxWithinBatch); // get the already saved hash value
        int bucketIdx = getBucketIndex(hash, numbuckets);
        int newStartIdx = newStartIndices.getAccessor().get(bucketIdx);


        if (newStartIdx == EMPTY_SLOT) { // new bucket was empty
          newStartIndices.getMutator().setSafe(bucketIdx, entryIdx); // update the start index to point to entry
          newLinks.getMutator().setSafe(entryIdxWithinBatch, EMPTY_SLOT);
          newHashValues.getMutator().setSafe(entryIdxWithinBatch, hash);


          if (EXTRA_DEBUG) logger.debug("New bucket was empty. bucketIdx = {}, newStartIndices[ {} ] = {}, newLinks[ {} ] = {}, hash value = {}.", bucketIdx, bucketIdx, newStartIndices.getAccessor().get(bucketIdx), entryIdxWithinBatch, newLinks.getAccessor().get(entryIdxWithinBatch), newHashValues.getAccessor().get(entryIdxWithinBatch));


        } else {
          // follow the new table's hash chain until we encounter empty slot. Note that the hash chain could
          // traverse multiple batch holders, so make sure we are accessing the right batch holder.
          int idx = newStartIdx;
          int idxWithinBatch = 0;
          BatchHolder bh = this;
          while (true) {
            if (idx != EMPTY_SLOT) {
              idxWithinBatch = idx & BATCH_MASK;
              int batchIdx = ((idx >>> 16) & BATCH_MASK);
              bh = batchHolders.get(batchIdx);
            }


            if (bh == this && newLinks.getAccessor().get(idxWithinBatch) == EMPTY_SLOT) {
              newLinks.getMutator().setSafe(idxWithinBatch, entryIdx);
              newLinks.getMutator().setSafe(entryIdxWithinBatch, EMPTY_SLOT);
              newHashValues.getMutator().setSafe(entryIdxWithinBatch, hash);


              if (EXTRA_DEBUG) logger.debug("Followed hash chain in new bucket. bucketIdx = {}, newLinks[ {} ] = {}, newLinks[ {} ] = {}, hash value = {}.", bucketIdx, idxWithinBatch, newLinks.getAccessor().get(idxWithinBatch), entryIdxWithinBatch, newLinks.getAccessor().get(entryIdxWithinBatch), newHashValues.getAccessor().get(entryIdxWithinBatch));


              break;
            } else if (bh != this && bh.links.getAccessor().get(idxWithinBatch) == EMPTY_SLOT) {
              bh.links.getMutator().setSafe(idxWithinBatch, entryIdx); // update the link in the other batch
              newLinks.getMutator().setSafe(entryIdxWithinBatch, EMPTY_SLOT); // update the newLink entry in this batch to mark end of the hash chain
              newHashValues.getMutator().setSafe(entryIdxWithinBatch,  hash);


              if (EXTRA_DEBUG) logger.debug("Followed hash chain in new bucket. bucketIdx = {}, newLinks[ {} ] = {}, newLinks[ {} ] = {}, hash value = {}.", bucketIdx, idxWithinBatch, newLinks.getAccessor().get(idxWithinBatch), entryIdxWithinBatch, newLinks.getAccessor().get(entryIdxWithinBatch), newHashValues.getAccessor().get(entryIdxWithinBatch));


              break;
            }
            if (bh == this) {
              idx = newLinks.getAccessor().get(idxWithinBatch);

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