reflect

Calls a method with reflection.

Syntax

Python

from pyspark.sql import functions as sf

sf.reflect(*cols)

Parameters

Parameter	Type	Description
cols	pyspark.sql.Column or str	The first element should be a Column representing literal string for the class name, and the second element should be a Column representing literal string for the method name, and the remaining are input arguments (Columns or column names) to the Java method.

Parameter	Type	Description
cols	pyspark.sql.Column or str	The first element should be a Column representing literal string for the class name, and the second element should be a Column representing literal string for the method name, and the remaining are input arguments (Columns or column names) to the Java method.

Examples

Example 1: Reflecting a method call

Python

from pyspark.sql import functions as sf
df = spark.createDataFrame([('a5cf6c42-0c85-418f-af6c-3e4e5b1328f2',)], ['a'])
df.select(
    sf.reflect(sf.lit('java.util.UUID'), sf.lit('fromString'), 'a')
).show(truncate=False)

Output

+--------------------------------------+
|reflect(java.util.UUID, fromString, a)|
+--------------------------------------+
|a5cf6c42-0c85-418f-af6c-3e4e5b1328f2  |
+--------------------------------------+