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

Class BeamSqlExtractExpression

java.lang.Object

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

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

All Implemented Interfaces:

java.io.Serializable

public class BeamSqlExtractExpression
extends BeamSqlExpression

BeamSqlExpression for EXTRACT.

The following date functions also implicitly converted to EXTRACT:

• YEAR(date) => EXTRACT(YEAR FROM date)
• MONTH(date) => EXTRACT(MONTH FROM date)
• DAY(date) => EXTRACT(DAY FROM date)
• QUARTER(date) => EXTRACT(QUARTER FROM date)
• WEEK(date) => EXTRACT(WEEK FROM date)
• DAYOFYEAR(date) => EXTRACT(DOY FROM date)
• DAYOFMONTH(date) => EXTRACT(DAY FROM date)
• DAYOFWEEK(date) => EXTRACT(DOW FROM date)
• HOUR(date) => EXTRACT(HOUR FROM date)
• MINUTE(date) => EXTRACT(MINUTE FROM date)
• SECOND(date) => EXTRACT(SECOND FROM date)

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
BeamSqlExtractExpression(java.util.List<BeamSqlExpression> operands)

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(Row inputRow, BoundedWindow window) 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

BeamSqlExtractExpression

public BeamSqlExtractExpression(java.util.List<BeamSqlExpression> operands)

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(Row inputRow,
                                 BoundedWindow window)

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