org.apache.flink.api.table.expressions

Class IsNull

java.lang.Object

org.apache.flink.api.table.trees.TreeNode<Expression>

org.apache.flink.api.table.expressions.Expression

org.apache.flink.api.table.expressions.UnaryExpression

org.apache.flink.api.table.expressions.IsNull

All Implemented Interfaces:

Serializable, scala.Equals, scala.Product

public class IsNull
extends UnaryExpression
implements scala.Product, scala.Serializable

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
IsNull(Expression child)

Method Summary

Modifier and Type	Method and Description
Expression	child()
String	toString()
BasicTypeInfo<Boolean>	typeInfo()

Methods inherited from class org.apache.flink.api.table.expressions.UnaryExpression

children

Methods inherited from class org.apache.flink.api.table.expressions.Expression

freshName, freshNameCounter, name

Methods inherited from class org.apache.flink.api.table.trees.TreeNode

exists, fastEquals, makeCopy, transformChildrenPost, transformChildrenPre, transformPost, transformPre

Methods inherited from class java.lang.Object

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

Methods inherited from interface scala.Product

productArity, productElement, productIterator, productPrefix

Methods inherited from interface scala.Equals

canEqual, equals

Constructor Detail

IsNull

public IsNull(Expression child)

Method Detail

child

public Expression child()

Specified by:

child in class UnaryExpression

typeInfo

public BasicTypeInfo<Boolean> typeInfo()

Specified by:

typeInfo in class Expression

toString

public String toString()

Overrides:

toString in class Object