org.apache.beam.sdk.extensions.sql.impl.interpreter.operator.math

Class BeamSqlMathUnaryExpression

java.lang.Object

org.apache.beam.sdk.extensions.sql.impl.interpreter.operator.BeamSqlExpression

org.apache.beam.sdk.extensions.sql.impl.interpreter.operator.math.BeamSqlMathUnaryExpression

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

BeamSqlAbsExpression, BeamSqlAcosExpression, BeamSqlAsinExpression, BeamSqlAtanExpression, BeamSqlCeilExpression, BeamSqlCosExpression, BeamSqlCotExpression, BeamSqlDegreesExpression, BeamSqlExpExpression, BeamSqlFloorExpression, BeamSqlLnExpression, BeamSqlLogExpression, BeamSqlRadiansExpression, BeamSqlSignExpression, BeamSqlSinExpression, BeamSqlTanExpression

public abstract class BeamSqlMathUnaryExpression
extends BeamSqlExpression

Base class for all unary functions such as ABS, SQRT, LN, LOG10, EXP, CEIL, FLOOR, RAND, ACOS, ASIN, ATAN, COS, COT, DEGREES, RADIANS, SIGN, SIN, TAN.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.beam.sdk.extensions.sql.impl.interpreter.operator.BeamSqlExpression

operands, outputType

Constructor Summary

Constructors

Constructor and Description
BeamSqlMathUnaryExpression(java.util.List<BeamSqlExpression> operands, org.apache.calcite.sql.type.SqlTypeName outputType)

Method Summary

Modifier and Type	Method and Description
boolean	accept() assertion to make sure the input and output are supported in this expression.
abstract BeamSqlPrimitive	calculate(BeamSqlPrimitive op) For the operands of other type SqlTypeName.NUMERIC_TYPES.
BeamSqlPrimitive<? extends java.lang.Number>	evaluate(Row inputRow, BoundedWindow window, BeamSqlExpressionEnvironment env) Apply input record Row with BoundedWindow to this expression, the output value is wrapped with BeamSqlPrimitive.

Methods inherited from class org.apache.beam.sdk.extensions.sql.impl.interpreter.operator.BeamSqlExpression

getOperands, getOutputType, numberOfOperands, op, opType, opValueEvaluated

Methods inherited from class java.lang.Object

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

Constructor Detail

BeamSqlMathUnaryExpression

public BeamSqlMathUnaryExpression(java.util.List<BeamSqlExpression> operands,
                                  org.apache.calcite.sql.type.SqlTypeName outputType)

Method Detail

accept

public boolean accept()

Description copied from class: BeamSqlExpression

assertion to make sure the input and output are supported in this expression.

Specified by:

accept in class BeamSqlExpression

evaluate

public BeamSqlPrimitive<? extends java.lang.Number> evaluate(Row inputRow,
                                                             BoundedWindow window,
                                                             BeamSqlExpressionEnvironment env)

Description copied from class: BeamSqlExpression

Apply input record Row with BoundedWindow to this expression, the output value is wrapped with BeamSqlPrimitive.

Specified by:

evaluate in class BeamSqlExpression

calculate

public abstract BeamSqlPrimitive calculate(BeamSqlPrimitive op)

For the operands of other type SqlTypeName.NUMERIC_TYPES.