PARQUET-582: Conversions functions for Parquet enums to Thrift enums

Author: Uwe L. Korn <[email protected]>

Closes apache#86 from xhochy/parquet-582 and squashes the following commits:

4fe3cf6 [Uwe L. Korn] Add DCHECK
0a742f6 [Uwe L. Korn] PARQUET-582: Conversions functions for Parquet enums to Thrift enums

Change-Id: I606348148624e52c588b5f78427e547ffc4b5536

cpp/src/parquet/thrift/util.h

@@ -48,6 +48,28 @@ static inline Compression::type FromThrift(format::CompressionCodec::type type)
  return static_cast<Compression::type>(type);
 }
 
+static inline format::Type::type ToThrift(Type::type type) {
+ return static_cast<format::Type::type>(type);
+}
+
+static inline format::ConvertedType::type ToThrift(LogicalType::type type) {
+ // item 0 is NONE
+ DCHECK_NE(type, LogicalType::NONE);
+ return static_cast<format::ConvertedType::type>(static_cast<int>(type) - 1);
+}
+
+static inline format::FieldRepetitionType::type ToThrift(Repetition::type type) {
+ return static_cast<format::FieldRepetitionType::type>(type);
+}
+
+static inline format::Encoding::type ToThrift(Encoding::type type) {
+ return static_cast<format::Encoding::type>(type);
+}
+
+static inline format::CompressionCodec::type ToThrift(Compression::type type) {
+ return static_cast<format::CompressionCodec::type>(type);
+}
+
 // ----------------------------------------------------------------------
 // Thrift struct serialization / deserialization utilities