Package org.apache.iotdb.db.mpp.transformation.dag.column.unary

Class IsNullColumnTransformer

java.lang.Object

org.apache.iotdb.db.mpp.transformation.dag.column.ColumnTransformer

org.apache.iotdb.db.mpp.transformation.dag.column.unary.UnaryColumnTransformer

org.apache.iotdb.db.mpp.transformation.dag.column.unary.IsNullColumnTransformer

public class IsNullColumnTransformer
extends UnaryColumnTransformer

Field Summary

Fields inherited from class org.apache.iotdb.db.mpp.transformation.dag.column.unary.UnaryColumnTransformer

childColumnTransformer

Fields inherited from class org.apache.iotdb.db.mpp.transformation.dag.column.ColumnTransformer

columnCache, referenceCount, returnType

Constructor Summary

Constructors

Constructor	Description
IsNullColumnTransformer(org.apache.iotdb.tsfile.read.common.type.Type returnType, ColumnTransformer childColumnTransformer, boolean isNot)

Method Summary

Modifier and Type	Method	Description
protected void	doTransform(org.apache.iotdb.tsfile.read.common.block.column.Column column, org.apache.iotdb.tsfile.read.common.block.column.ColumnBuilder columnBuilder)

Methods inherited from class org.apache.iotdb.db.mpp.transformation.dag.column.unary.UnaryColumnTransformer

checkType, evaluate, getChildColumnTransformer

Methods inherited from class org.apache.iotdb.db.mpp.transformation.dag.column.ColumnTransformer

addReferenceCount, close, getColumn, getColumnCachePositionCount, getType, initializeColumnCache, isReturnTypeNumeric, tryEvaluate

Methods inherited from class java.lang.Object

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

Constructor Detail

IsNullColumnTransformer

public IsNullColumnTransformer(org.apache.iotdb.tsfile.read.common.type.Type returnType,
                               ColumnTransformer childColumnTransformer,
                               boolean isNot)

Method Detail

doTransform

protected void doTransform(org.apache.iotdb.tsfile.read.common.block.column.Column column,
                           org.apache.iotdb.tsfile.read.common.block.column.ColumnBuilder columnBuilder)

Specified by:

doTransform in class UnaryColumnTransformer