use of org.apache.hadoop.hive.ql.exec.vector.expressions.IStructInExpr in project hive by apache.
the class VectorizationContext method getStructInExpression.
private VectorExpression getStructInExpression(List<ExprNodeDesc> childExpr, ExprNodeDesc colExpr, TypeInfo colTypeInfo, List<ExprNodeDesc> inChildren, VectorExpressionDescriptor.Mode mode, TypeInfo returnType) throws HiveException {
VectorExpression expr;
StructTypeInfo structTypeInfo = (StructTypeInfo) colTypeInfo;
List<TypeInfo> fieldTypeInfos = structTypeInfo.getAllStructFieldTypeInfos();
final int fieldCount = fieldTypeInfos.size();
ColumnVector.Type[] fieldVectorColumnTypes = new ColumnVector.Type[fieldCount];
InConstantType[] fieldInConstantTypes = new InConstantType[fieldCount];
for (int f = 0; f < fieldCount; f++) {
TypeInfo fieldTypeInfo = fieldTypeInfos.get(f);
// Only primitive fields supports for now.
if (fieldTypeInfo.getCategory() != Category.PRIMITIVE) {
return null;
}
// We are going to serialize using the 4 basic types.
ColumnVector.Type fieldVectorColumnType = getColumnVectorTypeFromTypeInfo(fieldTypeInfo);
fieldVectorColumnTypes[f] = fieldVectorColumnType;
// We currently evaluate the IN (..) constants in special ways.
PrimitiveCategory fieldPrimitiveCategory = ((PrimitiveTypeInfo) fieldTypeInfo).getPrimitiveCategory();
InConstantType inConstantType = getInConstantTypeFromPrimitiveCategory(fieldPrimitiveCategory);
fieldInConstantTypes[f] = inConstantType;
}
Output buffer = new Output();
BinarySortableSerializeWrite binarySortableSerializeWrite = new BinarySortableSerializeWrite(fieldCount);
final int inChildrenCount = inChildren.size();
byte[][] serializedInChildren = new byte[inChildrenCount][];
try {
for (int i = 0; i < inChildrenCount; i++) {
final ExprNodeDesc node = inChildren.get(i);
final Object[] constants;
if (node instanceof ExprNodeConstantDesc) {
ExprNodeConstantDesc constNode = (ExprNodeConstantDesc) node;
ConstantObjectInspector output = constNode.getWritableObjectInspector();
constants = ((List<?>) output.getWritableConstantValue()).toArray();
} else {
ExprNodeGenericFuncDesc exprNode = (ExprNodeGenericFuncDesc) node;
ExprNodeEvaluator<?> evaluator = ExprNodeEvaluatorFactory.get(exprNode);
ObjectInspector output = evaluator.initialize(exprNode.getWritableObjectInspector());
constants = (Object[]) evaluator.evaluate(null);
}
binarySortableSerializeWrite.set(buffer);
for (int f = 0; f < fieldCount; f++) {
Object constant = constants[f];
if (constant == null) {
binarySortableSerializeWrite.writeNull();
} else {
InConstantType inConstantType = fieldInConstantTypes[f];
switch(inConstantType) {
case STRING_FAMILY:
{
byte[] bytes;
if (constant instanceof Text) {
Text text = (Text) constant;
bytes = text.getBytes();
binarySortableSerializeWrite.writeString(bytes, 0, text.getLength());
} else {
throw new HiveException("Unexpected constant String type " + constant.getClass().getSimpleName());
}
}
break;
case INT_FAMILY:
{
long value;
if (constant instanceof IntWritable) {
value = ((IntWritable) constant).get();
} else if (constant instanceof LongWritable) {
value = ((LongWritable) constant).get();
} else {
throw new HiveException("Unexpected constant Long type " + constant.getClass().getSimpleName());
}
binarySortableSerializeWrite.writeLong(value);
}
break;
case FLOAT_FAMILY:
{
double value;
if (constant instanceof DoubleWritable) {
value = ((DoubleWritable) constant).get();
} else {
throw new HiveException("Unexpected constant Double type " + constant.getClass().getSimpleName());
}
binarySortableSerializeWrite.writeDouble(value);
}
break;
// UNDONE...
case DATE:
case TIMESTAMP:
case DECIMAL:
default:
throw new RuntimeException("Unexpected IN constant type " + inConstantType.name());
}
}
}
serializedInChildren[i] = Arrays.copyOfRange(buffer.getData(), 0, buffer.getLength());
}
} catch (Exception e) {
throw new HiveException(e);
}
// Create a single child representing the scratch column where we will
// generate the serialized keys of the batch.
int scratchBytesCol = ocm.allocateOutputColumn(TypeInfoFactory.stringTypeInfo);
Class<?> cl = (mode == VectorExpressionDescriptor.Mode.FILTER ? FilterStructColumnInList.class : StructColumnInList.class);
expr = createVectorExpression(cl, null, VectorExpressionDescriptor.Mode.PROJECTION, returnType, DataTypePhysicalVariation.NONE);
((IStringInExpr) expr).setInListValues(serializedInChildren);
((IStructInExpr) expr).setScratchBytesColumn(scratchBytesCol);
((IStructInExpr) expr).setStructColumnExprs(this, colExpr.getChildren(), fieldVectorColumnTypes);
return expr;
}
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