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

Class BeamSqlCompareExpression

java.lang.Object

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

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

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

BeamSqlEqualsExpression, BeamSqlGreaterThanExpression, BeamSqlGreaterThanOrEqualsExpression, BeamSqlLessThanExpression, BeamSqlLessThanOrEqualsExpression, BeamSqlNotEqualsExpression

public abstract class BeamSqlCompareExpression
extends BeamSqlExpression

BeamSqlCompareExpression is used for compare operations.

See BeamSqlEqualsExpression, BeamSqlLessThanExpression, BeamSqlLessThanOrEqualsExpression, BeamSqlGreaterThanExpression, BeamSqlGreaterThanOrEqualsExpression and BeamSqlNotEqualsExpression for more details.

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

Method Summary

Modifier and Type	Method and Description
boolean	accept() Compare operation must have 2 operands.
abstract java.lang.Boolean	compare(java.lang.Boolean leftValue, java.lang.Boolean rightValue) Compare between Boolean values, mapping to SqlTypeName#BOOLEAN.
abstract java.lang.Boolean	compare(java.lang.CharSequence leftValue, java.lang.CharSequence rightValue) Compare between String values, mapping to SqlTypeName#VARCHAR.
abstract java.lang.Boolean	compare(java.lang.Number leftValue, java.lang.Number rightValue) Compare between Number values, including SqlTypeName#BIGINT, SqlTypeName#DECIMAL, SqlTypeName#DOUBLE, SqlTypeName#FLOAT, SqlTypeName#INTEGER, SqlTypeName#SMALLINT and SqlTypeName#TINYINT.
BeamSqlPrimitive<java.lang.Boolean>	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

BeamSqlCompareExpression

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

Method Detail

accept

public boolean accept()

Compare operation must have 2 operands.

Specified by:

accept in class BeamSqlExpression

evaluate

public BeamSqlPrimitive<java.lang.Boolean> 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

compare

public abstract java.lang.Boolean compare(java.lang.CharSequence leftValue,
                                          java.lang.CharSequence rightValue)

Compare between String values, mapping to SqlTypeName#VARCHAR.

compare

public abstract java.lang.Boolean compare(java.lang.Boolean leftValue,
                                          java.lang.Boolean rightValue)

Compare between Boolean values, mapping to SqlTypeName#BOOLEAN.

compare

public abstract java.lang.Boolean compare(java.lang.Number leftValue,
                                          java.lang.Number rightValue)

Compare between Number values, including SqlTypeName#BIGINT, SqlTypeName#DECIMAL, SqlTypeName#DOUBLE, SqlTypeName#FLOAT, SqlTypeName#INTEGER, SqlTypeName#SMALLINT and SqlTypeName#TINYINT.