rdblue commented on a change in pull request #207: Add external schema mappings
for files written with name-based schemas #40
URL: https://github.com/apache/incubator-iceberg/pull/207#discussion_r333203489
##########
File path:
core/src/main/java/org/apache/iceberg/avro/ProjectionDatumReader.java
##########
@@ -26,29 +26,33 @@
import org.apache.avro.Schema;
import org.apache.avro.io.DatumReader;
import org.apache.avro.io.Decoder;
+import org.apache.iceberg.mapping.NameMapping;
import org.apache.iceberg.types.TypeUtil;
public class ProjectionDatumReader<D> implements DatumReader<D> {
private final Function<Schema, DatumReader<?>> getReader;
private final org.apache.iceberg.Schema expectedSchema;
private final Map<String, String> renames;
+ private final NameMapping nameMapping;
private Schema readSchema = null;
private Schema fileSchema = null;
private DatumReader<D> wrapped = null;
public ProjectionDatumReader(Function<Schema, DatumReader<?>> getReader,
org.apache.iceberg.Schema expectedSchema,
- Map<String, String> renames) {
+ Map<String, String> renames,
+ NameMapping nameMapping) {
this.getReader = getReader;
this.expectedSchema = expectedSchema;
this.renames = renames;
+ this.nameMapping = nameMapping;
}
@Override
public void setSchema(Schema newFileSchema) {
this.fileSchema = newFileSchema;
Set<Integer> projectedIds = TypeUtil.getProjectedIds(expectedSchema);
- Schema prunedSchema = AvroSchemaUtil.pruneColumns(newFileSchema,
projectedIds);
+ Schema prunedSchema = AvroSchemaUtil.pruneColumns(newFileSchema,
projectedIds, nameMapping);
Review comment:
Yes, of course. I don't think that needs to be part of this one. This is
just adding support for a mapping if you specify one.
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