@Override public void allocate() { vector.allocateNew(); }
public void allocate(){ vector.allocateNew(); }
/** * * @param allocator * @param name * @param length the length of the vector * @return */ public static Float8Vector doubleVectorOf(BufferAllocator allocator,String name,int length) { Float8Vector float8Vector = new Float8Vector(name,allocator); float8Vector.allocateNew(); float8Vector.setValueCount(length); return float8Vector; }
/** * * @param allocator * @param name * @param data * @return */ public static Float8Vector vectorFor(BufferAllocator allocator,String name,double[] data) { Float8Vector float8Vector = new Float8Vector(name,allocator); float8Vector.allocateNew(data.length); for(int i = 0; i < data.length; i++) { float8Vector.setSafe(i,data[i]); } float8Vector.setValueCount(data.length); return float8Vector; }
private void populateDouble(Float8Vector vector, Double[] data) { vector.allocateNew(); Random r = new Random(); for(int i =0; i < data.length; i++){ Double val = data[i]; if(val != null){ vector.setSafe(i, val); } else { vector.setSafe(i, 0, r.nextDouble()); } } vector.setValueCount(data.length); }
private static VectorContainer buildDoubleGlobalDictionary(List<Dictionary> dictionaries, VectorContainer existingDict, ColumnDescriptor columnDescriptor, BufferAllocator bufferAllocator) { final Field field = new Field(SchemaPath.getCompoundPath(columnDescriptor.getPath()).getAsUnescapedPath(), true, new ArrowType.FloatingPoint(FloatingPointPrecision.DOUBLE), null); final VectorContainer input = new VectorContainer(bufferAllocator); final Float8Vector doubleVector = input.addOrGet(field); doubleVector.allocateNew(); SortedSet<Double> values = Sets.newTreeSet(); for (Dictionary dictionary : dictionaries) { for (int i = 0; i <= dictionary.getMaxId(); ++i) { values.add(dictionary.decodeToDouble(i)); } } if (existingDict != null) { final Float8Vector existingDictValues = existingDict.getValueAccessorById(Float8Vector.class, 0).getValueVector(); for (int i = 0; i < existingDict.getRecordCount(); ++i) { values.add(existingDictValues.get(i)); } } final Iterator<Double> iter = values.iterator(); int recordCount = 0; while (iter.hasNext()) { doubleVector.setSafe(recordCount++, iter.next()); } doubleVector.setValueCount(recordCount); input.setRecordCount(recordCount); input.buildSchema(BatchSchema.SelectionVectorMode.NONE); return input; }
public void loadData(SerializedField metadata, ArrowBuf buffer) { /* clear the current buffers (if any) */ vector.clear(); /* get the metadata children */ final SerializedField bitsField = metadata.getChild(0); final SerializedField valuesField = metadata.getChild(1); final int valuesLength = buffer.capacity(); vector.allocateNew(metadata.getValueCount()); /* set inner validity buffer */ setValidityBuffer(bitsField); /* load inner value buffer */ vector.valueBuffer.close(); loadDataBuffer(valuesField, buffer.slice(0, valuesLength)); }
private static Pair<Float8Vector, ResultVerifier> testFloat8Vector(final int startIndexInCurrentOutput, final int startIndexInJob) { Float8Vector colFloat8V = new Float8Vector("colFloat8", allocator); colFloat8V.allocateNew(5); colFloat8V.set(0, 20.2345234d); colFloat8V.set(1, 503453.023d); colFloat8V.set(2, -238423.3453453d); colFloat8V.set(3, 3273452.345324563245d); colFloat8V.setNull(4); ResultVerifier verifier = new ResultVerifier() { @Override public void verify(DataPOJO output) { int index = startIndexInCurrentOutput; assertEquals(20.2345234d, ((Double)output.extractValue("colFloat8", index++)).doubleValue(), 0.01f); assertEquals(503453.023d, ((Double)output.extractValue("colFloat8", index++)).doubleValue(), 0.01f); assertEquals(-238423.3453453d, ((Double)output.extractValue("colFloat8", index++)).doubleValue(), 0.01f); assertEquals(3273452.345324563245d, ((Double)output.extractValue("colFloat8", index++)).doubleValue(), 0.01f); assertNull(output.extractValue("colFloat8", 4)); } }; return Pair.of(colFloat8V, verifier); }
doubleVector.allocateNew(); doubleVector.setSafe(0, 100.1); doubleVector.setSafe(1, 200.2);