org.apache.parquet.cli.util

Class Expressions

java.lang.Object

org.apache.parquet.cli.util.Expressions

public class Expressions
extends Object

Constructor Summary

Constructors

Constructor and Description
Expressions()

Method Summary

Modifier and Type	Method and Description
static org.apache.avro.Schema	filterSchema(org.apache.avro.Schema schema, List<String> fieldPaths)
static org.apache.avro.Schema	filterSchema(org.apache.avro.Schema schema, String... fieldPaths) a.2.b[3]["key"] * optional (union with null) should be ignored * unions should match by position number or short name (e.g.
static Object	select(org.apache.avro.Schema schema, Object datum, String path)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Expressions

public Expressions()

Method Detail

select

public static Object select(org.apache.avro.Schema schema,
                            Object datum,
                            String path)

filterSchema

public static org.apache.avro.Schema filterSchema(org.apache.avro.Schema schema,
                                                  String... fieldPaths)

a.2.b[3]["key"] * optional (union with null) should be ignored * unions should match by position number or short name (e.g. 2, user) * fields should match by name * arrays are dereferenced by position [n] => schema is the element schema * maps are dereferenced by key => schema is the value schema

Parameters:

schema - an Avro schema

fieldPaths - selected field paths

Returns:

a filtered schema

filterSchema

public static org.apache.avro.Schema filterSchema(org.apache.avro.Schema schema,
                                                  List<String> fieldPaths)