org.apache.hadoop.hive.ql.exec.vector.expressions

Class StructColumnInList

java.lang.Object

org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression

org.apache.hadoop.hive.ql.exec.vector.expressions.StringColumnInList

org.apache.hadoop.hive.ql.exec.vector.expressions.StructColumnInList

All Implemented Interfaces:

Serializable, IStringInExpr, IStructInExpr

public class StructColumnInList
extends StringColumnInList
implements IStructInExpr

Evaluate an IN boolean expression (not a filter) on a batch for a vector of structs. This is optimized so that no objects have to be created in the inner loop, and there is a hash table implemented with Cuckoo hashing that has fast lookup to do the IN test.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression

childExpressions, inputColumnNum, inputDataTypePhysicalVariations, inputTypeInfos, LOG, outputColumnNum, outputDataTypePhysicalVariation, outputTypeInfo

Constructor Summary

Constructors

Constructor and Description
StructColumnInList()
StructColumnInList(int outputColumnNum) After construction you must call setInListValues() to add the values to the IN set.

Method Summary

Modifier and Type	Method and Description
void	evaluate(VectorizedRowBatch batch) This is the primary method to implement expression logic.
VectorExpressionDescriptor.Descriptor	getDescriptor()
void	setScratchBytesColumn(int scratchBytesColumn)
void	setStructColumnExprs(VectorizationContext vContext, List<ExprNodeDesc> structColumnExprs, ColumnVector.Type[] fieldVectorColumnTypes)
String	vectorExpressionParameters()

Methods inherited from class org.apache.hadoop.hive.ql.exec.vector.expressions.StringColumnInList

setInListValues

Methods inherited from class org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression

displayArrayOfUtf8ByteArrays, displayUtf8Bytes, doTransientInit, doTransientInit, evaluateChildren, getChildExpressions, getChildExpressionsForTransientInit, getColumnParamString, getDoubleValueParamString, getInputDataTypePhysicalVariations, getInputTypeInfos, getLongValueParamString, getOutputColumnNum, getOutputColumnVectorType, getOutputDataTypePhysicalVariation, getOutputTypeInfo, getParamTypeString, getTypeName, init, setChildExpressions, setInputDataTypePhysicalVariations, setInputTypeInfos, setOutputDataTypePhysicalVariation, setOutputTypeInfo, shouldConvertDecimal64ToDecimal, supportsCheckedExecution, toString, transientInit

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

StructColumnInList

public StructColumnInList()

StructColumnInList

public StructColumnInList(int outputColumnNum)

After construction you must call setInListValues() to add the values to the IN set.

Method Detail

evaluate

public void evaluate(VectorizedRowBatch batch)
              throws HiveException

Description copied from class: VectorExpression

This is the primary method to implement expression logic.

Overrides:

evaluate in class StringColumnInList

Throws:

HiveException

getDescriptor

public VectorExpressionDescriptor.Descriptor getDescriptor()

Overrides:

getDescriptor in class StringColumnInList

setScratchBytesColumn

public void setScratchBytesColumn(int scratchBytesColumn)

Specified by:

setScratchBytesColumn in interface IStructInExpr

setStructColumnExprs

public void setStructColumnExprs(VectorizationContext vContext,
                                 List<ExprNodeDesc> structColumnExprs,
                                 ColumnVector.Type[] fieldVectorColumnTypes)
                          throws HiveException

Specified by:

setStructColumnExprs in interface IStructInExpr

Throws:

HiveException

vectorExpressionParameters

public String vectorExpressionParameters()

Overrides:

vectorExpressionParameters in class StringColumnInList