org.gcube.data.analysis.tabulardata.expression.logical

Class IsNull

java.lang.Object

org.gcube.data.analysis.tabulardata.expression.Expression

org.gcube.data.analysis.tabulardata.expression.composite.CompositeExpression

org.gcube.data.analysis.tabulardata.expression.composite.UnaryExpression

org.gcube.data.analysis.tabulardata.expression.logical.IsNull

All Implemented Interfaces:

Serializable, ExpressionCategory, LogicalExpression

public class IsNull
extends UnaryExpression
implements LogicalExpression

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
IsNull(Expression argument)

Method Summary

Modifier and Type	Method and Description
List<Class<? extends DataType>>	allowedDataTypes()
Operator	getOperator()
DataType	getReturnedDataType() Validates the returned data type of the Expression.

Methods inherited from class org.gcube.data.analysis.tabulardata.expression.composite.UnaryExpression

equals, getArgument, getLeavesByType, hashCode, setArgument, toString, validate

Methods inherited from class org.gcube.data.analysis.tabulardata.expression.Expression

clone, getAppliableOperators, getExpressionsByCategory

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

IsNull

public IsNull(Expression argument)

Method Detail

getReturnedDataType

public DataType getReturnedDataType()

Description copied from class: Expression

Validates the returned data type of the Expression. Invalid expression may return a wrong datatype

Specified by:

getReturnedDataType in class Expression

Returns:

getOperator

public Operator getOperator()

Specified by:

getOperator in class CompositeExpression

allowedDataTypes

public List<Class<? extends DataType>> allowedDataTypes()

Overrides:

allowedDataTypes in class UnaryExpression