Ok thanks, but what is the meaning of Repetition.OPTIONAL? Also how to create a List ?
On Sat, 15 Mar 2025, 20:37 Jerónimo López Bezanilla, <jero...@gmail.com> wrote: > 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. > > >
