liamzwbao commented on code in PR #13072:
URL: https://github.com/apache/iceberg/pull/13072#discussion_r2141255682
##########
flink/v1.20/flink/src/main/java/org/apache/iceberg/flink/FlinkSchemaUtil.java:
##########
@@ -231,4 +290,90 @@ public static TableSchema toSchema(Schema schema) {
return builder.build();
}
+
+ /**
+ * Convert a {@link Schema} to a {@link ResolvedSchema}.
+ *
+ * @param schema iceberg schema to convert.
+ * @return Flink ResolvedSchema.
+ */
+ public static ResolvedSchema toResolvedSchema(Schema schema) {
+ RowType rowType = convert(schema);
+ List<Column> columns =
Lists.newArrayListWithExpectedSize(rowType.getFieldCount());
+
+ // Add columns.
+ for (RowType.RowField field : rowType.getFields()) {
+ columns.add(
+ Column.physical(field.getName(),
TypeConversions.fromLogicalToDataType(field.getType())));
+ }
+
+ // Add primary key.
+ Set<Integer> identifierFieldIds = schema.identifierFieldIds();
+ UniqueConstraint uniqueConstraint = null;
+ if (!identifierFieldIds.isEmpty()) {
+ List<String> primaryKeyColumns =
+ Lists.newArrayListWithExpectedSize(identifierFieldIds.size());
+ for (Integer identifierFieldId : identifierFieldIds) {
+ String columnName = schema.findColumnName(identifierFieldId);
+ Preconditions.checkNotNull(
+ columnName, "Cannot find field with id %s in schema %s",
identifierFieldId, schema);
+
+ primaryKeyColumns.add(columnName);
+ }
+
+ uniqueConstraint =
+ UniqueConstraint.primaryKey(UUID.randomUUID().toString(),
primaryKeyColumns);
+
+ validatePrimaryKey(uniqueConstraint, columns);
+ }
+
+ return new ResolvedSchema(columns, Collections.emptyList(),
uniqueConstraint);
+ }
+
+ /**
+ * Copied from
+ *
org.apache.flink.table.catalog.DefaultSchemaResolver#validatePrimaryKey(org.apache.flink.table.catalog.UniqueConstraint,
+ * java.util.List)
+ */
Review Comment:
updated
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