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

Class BeamSqlInputRefExpression

java.lang.Object

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

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

All Implemented Interfaces:

java.io.Serializable

public class BeamSqlInputRefExpression
extends BeamSqlExpression

An primitive operation for direct field extraction.

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
BeamSqlInputRefExpression(SqlTypeName sqlTypeName, int inputRef)

Method Summary

Modifier and Type	Method and Description
boolean	accept() assertion to make sure the input and output are supported in this expression.
BeamSqlPrimitive	evaluate(BeamRecord inputRow, BoundedWindow window) Apply input record BeamRecord with BoundedWindow to this expression, the output value is wrapped with BeamSqlPrimitive.
int	getInputRef()

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

BeamSqlInputRefExpression

public BeamSqlInputRefExpression(SqlTypeName sqlTypeName,
                                 int inputRef)

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 evaluate(BeamRecord inputRow,
                                 BoundedWindow window)

Description copied from class: BeamSqlExpression

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

Specified by:

evaluate in class BeamSqlExpression

getInputRef

public int getInputRef()