felixYyu commented on a change in pull request #3862:
URL: https://github.com/apache/iceberg/pull/3862#discussion_r780740945
##########
File path:
spark/v3.2/spark/src/main/java/org/apache/iceberg/spark/source/SparkTable.java
##########
@@ -313,4 +324,77 @@ private static CaseInsensitiveStringMap
addSnapshotId(CaseInsensitiveStringMap o
return options;
}
+
+ @Override
+ public StructType partitionSchema() {
+ Schema schema = icebergTable.spec().schema();
+ List<PartitionField> fields = icebergTable.spec().fields();
+ List<Types.NestedField> structFields =
Lists.newArrayListWithExpectedSize(fields.size());
+ fields.forEach(f -> {
+ Type resultType = Types.StringType.get();
+ Type sourceType = schema.findType(f.sourceId());
+ if (!f.name().endsWith("hour") && !f.name().endsWith("month")) {
+ resultType = f.transform().getResultType(sourceType);
+ }
+ structFields.add(Types.NestedField.optional(f.fieldId(), f.name(),
resultType));
+ });
+ return (StructType)
SparkSchemaUtil.convert(Types.StructType.of(structFields));
+ }
+
+ @Override
+ public void createPartition(InternalRow ident, Map<String, String>
properties) throws UnsupportedOperationException {
+ // use Iceberg SQL extensions
+ }
+
+ @Override
+ public boolean dropPartition(InternalRow ident) {
+ // use Iceberg SQL extensions
+ return false;
+ }
+
+ @Override
+ public void replacePartitionMetadata(InternalRow ident, Map<String, String>
properties)
+ throws UnsupportedOperationException {
+ throw new UnsupportedOperationException("Iceberg partitions do not support
metadata");
+ }
+
+ @Override
+ public Map<String, String> loadPartitionMetadata(InternalRow ident) throws
UnsupportedOperationException {
+ throw new UnsupportedOperationException("Iceberg partitions do not support
metadata");
+ }
+
+ @Override
+ public InternalRow[] listPartitionIdentifiers(String[] names, InternalRow
ident) {
+ // support [show partitions] syntax
+ if (!icebergTable.spec().isUnpartitioned()){
+ if (names.length > 0){
+ return new InternalRow[]{ident};
+ }
+ else {
Review comment:
updated, thanks.
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