io.delta.kernel.expressions

Class PartitionValueExpression

Object

io.delta.kernel.expressions.PartitionValueExpression

All Implemented Interfaces:

Expression

@Evolving
public class PartitionValueExpression
extends Object
implements Expression

Expression to decode the serialized partition value into partition type value according the Delta Protocol spec. Currently all valid partition types are supported except the `timestamp` and `timestamp without timezone` types.

• Name: partition_value
• Semantic: partition_value(string, datatype). Decode the partition value of type datatype from the serialized string format.

Since:

3.0.0

Constructor Summary

Constructors

Constructor and Description
PartitionValueExpression(Expression serializedPartitionValue, DataType partitionDataType) Create partition_value expression.

Method Summary

Modifier and Type	Method and Description
java.util.List<Expression>	getChildren()
DataType	getDataType() Get the data type of the partition value.
Expression	getInput() Get the expression reference to the serialized partition value.
String	toString()

Methods inherited from class Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

PartitionValueExpression

public PartitionValueExpression(Expression serializedPartitionValue,
                                DataType partitionDataType)

Create partition_value expression.

Parameters:

serializedPartitionValue - Input expression providing the partition values in serialized format.

partitionDataType - Partition data type to which string partition value is deserialized as according to the Delta Protocol.

Method Detail

getInput

public Expression getInput()

Get the expression reference to the serialized partition value.

getDataType

public DataType getDataType()

Get the data type of the partition value.

getChildren

public java.util.List<Expression> getChildren()

Specified by:

getChildren in interface Expression

Returns:

a list of expressions that are input to this expression.

toString

public String toString()

Overrides:

toString in class Object