If you are working with low level Parquet API, you can not instantiate the ENUM Logical Type. You just call to LogicalTypeAnnotation.enumType() to get an instance of it.
To declare an optional column with name "your_enum_field" with the logical type ENUM ( https://github.com/apache/parquet-format/blob/master/LogicalTypes.md#enum) you can use this code: Types.primitive(BINARY, Repetition.OPTIONAL).as(LogicalTypeAnnotation.enumType()).named("your_enum_field"); On 2025/03/11 23:31:16 marc nicole wrote: > I want to create an ENUM object ( > LogicalTypeAnnotation.EnumLogicalTypeAnnotation > < https://www.javadoc.io/static/org.apache.parquet/parquet-column/1.15.0/org/apache/parquet/schema/LogicalTypeAnnotation.EnumLogicalTypeAnnotation.html > > ) > > How to do that using LogicalTypeAnnotation > < https://www.javadoc.io/static/org.apache.parquet/parquet-column/1.15.0/org/apache/parquet/schema/LogicalTypeAnnotation.EnumLogicalTypeAnnotation.html > > ? > > I see that is enumType > < https://www.javadoc.io/static/org.apache.parquet/parquet-column/1.15.0/org/apache/parquet/schema/LogicalTypeAnnotation.html#enumType-- > > () but without the parameters (the ENUM constants). > > Also, in order to retrieve the ENUMs from a > LogicalTypeAnnotation.EnumLogicalTypeAnnotation > < https://www.javadoc.io/static/org.apache.parquet/parquet-column/1.15.0/org/apache/parquet/schema/LogicalTypeAnnotation.EnumLogicalTypeAnnotation.html > > object: > is that correct to do : > > LogicalTypeAnnotation().toOriginalType > < https://www.javadoc.io/static/org.apache.parquet/parquet-column/1.15.0/org/apache/parquet/schema/LogicalTypeAnnotation.html#toOriginalType-- > > ().values()? > > Thanks for clarifying. >
