rdblue commented on a change in pull request #2465:
URL: https://github.com/apache/iceberg/pull/2465#discussion_r620700484
##########
File path: core/src/test/java/org/apache/iceberg/TestSchemaUpdate.java
##########
@@ -1223,4 +1223,232 @@ public void testMoveBetweenStructsFails() {
.moveBefore("s2.x", "s1.a")
.apply());
}
+
+ @Test
+ public void testAddExistingIdentifierFields() {
+ Schema newSchema = new SchemaUpdate(SCHEMA, SCHEMA_LAST_COLUMN_ID)
+ .setIdentifierFields(Sets.newHashSet("id"))
+ .apply();
+
+ Assert.assertEquals("add an existing field as identifier field should
succeed",
+ Sets.newHashSet(newSchema.findField("id").fieldId()),
+ newSchema.identifierFieldIds());
+ }
+
+ @Test
+ public void testAddNewIdentifierFieldColumns() {
+ Schema newSchema = new SchemaUpdate(SCHEMA, SCHEMA_LAST_COLUMN_ID)
+ .addColumn("new_field", Types.StringType.get())
+ .setIdentifierFields(Sets.newHashSet("id", "new_field"))
+ .apply();
+
+ Assert.assertEquals("add column then set as identifier should succeed",
+ Sets.newHashSet(newSchema.findField("id").fieldId(),
newSchema.findField("new_field").fieldId()),
+ newSchema.identifierFieldIds());
+
+ newSchema = new SchemaUpdate(SCHEMA, SCHEMA_LAST_COLUMN_ID)
+ .setIdentifierFields(Sets.newHashSet("id", "new_field"))
+ .addColumn("new_field", Types.StringType.get())
+ .apply();
+
+ Assert.assertEquals("set identifier then add column should succeed",
+ Sets.newHashSet(newSchema.findField("id").fieldId(),
newSchema.findField("new_field").fieldId()),
+ newSchema.identifierFieldIds());
+ }
+
+ @Test
+ public void testAddNestedIdentifierFieldColumns() {
+ Schema newSchema = new SchemaUpdate(SCHEMA, SCHEMA_LAST_COLUMN_ID)
+ .setIdentifierFields(Sets.newHashSet("preferences.feature1"))
+ .apply();
+
+ Assert.assertEquals("set existing nested field as identifier should
succeed",
+ Sets.newHashSet(newSchema.findField("preferences.feature1").fieldId()),
+ newSchema.identifierFieldIds());
+
+ newSchema = new SchemaUpdate(SCHEMA, SCHEMA_LAST_COLUMN_ID)
+ .addColumn("new", Types.StructType.of(
+ Types.NestedField.optional(SCHEMA_LAST_COLUMN_ID + 1, "field",
Types.StringType.get())
+ ))
+ .setIdentifierFields(Sets.newHashSet("new.field"))
+ .apply();
+
+ Assert.assertEquals("set newly added nested field as identifier should
succeed",
+ Sets.newHashSet(newSchema.findField("new.field").fieldId()),
+ newSchema.identifierFieldIds());
+
+ newSchema = new SchemaUpdate(SCHEMA, SCHEMA_LAST_COLUMN_ID)
+ .addColumn("new", Types.StructType.of(
+ Types.NestedField.optional(SCHEMA_LAST_COLUMN_ID + 1, "field",
Types.StructType.of(
+ Types.NestedField.optional(SCHEMA_LAST_COLUMN_ID + 2,
"nested", Types.StringType.get())))))
+ .setIdentifierFields(Sets.newHashSet("new.field.nested"))
+ .apply();
+
+ Assert.assertEquals("set newly added multi-layer nested field as
identifier should succeed",
+ Sets.newHashSet(newSchema.findField("new.field.nested").fieldId()),
+ newSchema.identifierFieldIds());
+ }
+
+ @Test
+ public void testAddDottedIdentifierFieldColumns() {
+ Schema newSchema = new SchemaUpdate(SCHEMA, SCHEMA_LAST_COLUMN_ID)
+ .addColumn(null, "dot.field", Types.StringType.get())
+ .setIdentifierFields(Sets.newHashSet("id", "dot.field"))
+ .apply();
+
+ Assert.assertEquals("add a field with dot as identifier should succeed",
+ Sets.newHashSet(newSchema.findField("id").fieldId(),
newSchema.findField("dot.field").fieldId()),
+ newSchema.identifierFieldIds());
+ }
+
+ @Test
+ public void testRemoveIdentifierFields() {
+ Schema newSchema = new SchemaUpdate(SCHEMA, SCHEMA_LAST_COLUMN_ID)
+ .addColumn("new_field", Types.StringType.get())
+ .addColumn("new_field2", Types.StringType.get())
+ .setIdentifierFields(Sets.newHashSet("id", "new_field", "new_field2"))
+ .apply();
+
+ newSchema = new SchemaUpdate(newSchema, SCHEMA_LAST_COLUMN_ID)
+ .setIdentifierFields(Sets.newHashSet("new_field", "new_field2"))
+ .apply();
+
+ Assert.assertEquals("remove an identifier field should succeed",
+ Sets.newHashSet(newSchema.findField("new_field").fieldId(),
newSchema.findField("new_field2").fieldId()),
+ newSchema.identifierFieldIds());
+
+ newSchema = new SchemaUpdate(newSchema, SCHEMA_LAST_COLUMN_ID)
+ .setIdentifierFields(Sets.newHashSet())
+ .apply();
+
+ Assert.assertEquals("remove all identifier fields should succeed",
+ Sets.newHashSet(),
+ newSchema.identifierFieldIds());
+ }
+
+ @Test
+ public void testSetIdentifierFieldsFails() {
+ AssertHelpers.assertThrows("add a field with name not exist should fail",
+ IllegalArgumentException.class,
+ "not found in current schema or added columns",
+ () -> new SchemaUpdate(SCHEMA, SCHEMA_LAST_COLUMN_ID)
+ .setIdentifierFields(Sets.newHashSet("unknown"))
+ .apply());
+
+ AssertHelpers.assertThrows("add a field of non-primitive type should fail",
+ IllegalArgumentException.class,
+ "not a primitive type field",
+ () -> new SchemaUpdate(SCHEMA, SCHEMA_LAST_COLUMN_ID)
+ .setIdentifierFields(Sets.newHashSet("locations"))
+ .apply());
+
+ AssertHelpers.assertThrows("add a nested field in map should fail",
+ IllegalArgumentException.class,
+ "must not be nested in " + SCHEMA.findField("locations"),
+ () -> new SchemaUpdate(SCHEMA, SCHEMA_LAST_COLUMN_ID)
+ .setIdentifierFields(Sets.newHashSet("locations.key.zip"))
+ .apply());
+
+ AssertHelpers.assertThrows("add a nested field in list should fail",
+ IllegalArgumentException.class,
+ "must not be nested in " + SCHEMA.findField("points"),
+ () -> new SchemaUpdate(SCHEMA, SCHEMA_LAST_COLUMN_ID)
+ .setIdentifierFields(Sets.newHashSet("points.element.x"))
+ .apply());
+
+ Schema newSchema = new SchemaUpdate(SCHEMA, SCHEMA_LAST_COLUMN_ID)
+ .addColumn("new", Types.StructType.of(
+ Types.NestedField.optional(SCHEMA_LAST_COLUMN_ID + 1, "fields",
Types.ListType.ofOptional(
+ SCHEMA_LAST_COLUMN_ID + 2, Types.StructType.of(
+ Types.NestedField.optional(SCHEMA_LAST_COLUMN_ID + 3,
"nested", Types.StringType.get())
+ ))
+ )
+ ))
+ .apply();
+
+ AssertHelpers.assertThrows("add a nested field in struct of a map should
fail",
+ IllegalArgumentException.class,
+ "must not be nested in " + newSchema.findField("new.fields"),
+ () -> new SchemaUpdate(newSchema, SCHEMA_LAST_COLUMN_ID + 3)
+ .setIdentifierFields(Sets.newHashSet("new.fields.element.nested"))
+ .apply());
+ }
+
+ @Test
+ public void testDeleteIdentifierFieldColumns() {
+ Schema schemaWithIdentifierFields = new SchemaUpdate(SCHEMA,
SCHEMA_LAST_COLUMN_ID)
+ .setIdentifierFields(Sets.newHashSet("id"))
+ .apply();
+
+ Assert.assertEquals("delete column and then reset identifier field should
succeed",
+ Sets.newHashSet(),
+ new SchemaUpdate(schemaWithIdentifierFields, SCHEMA_LAST_COLUMN_ID)
+ .deleteColumn("id").setIdentifierFields(Sets.newHashSet()).apply()
+ .identifierFieldIds());
+
+ Assert.assertEquals("delete reset identifier field and then delete column
should succeed",
+ Sets.newHashSet(),
+ new SchemaUpdate(schemaWithIdentifierFields, SCHEMA_LAST_COLUMN_ID)
+ .setIdentifierFields(Sets.newHashSet()).deleteColumn("id").apply()
+ .identifierFieldIds());
+ }
+
+ @Test
+ public void testDeleteIdentifierFieldColumnsFails() {
+ Schema schemaWithIdentifierFields = new SchemaUpdate(SCHEMA,
SCHEMA_LAST_COLUMN_ID)
+ .setIdentifierFields(Sets.newHashSet("id"))
+ .apply();
+
+ AssertHelpers.assertThrows("delete an identifier column without setting
identifier fields should fail",
+ IllegalArgumentException.class,
+ "Cannot delete identifier field 1: id: required int. To force
deletion, " +
+ "also call setIdentifierFields to update identifier fields.",
+ () -> new SchemaUpdate(schemaWithIdentifierFields,
SCHEMA_LAST_COLUMN_ID).deleteColumn("id").apply());
+ }
+
+ @Test
+ public void testRenameIdentifierFields() {
+ Schema schemaWithIdentifierFields = new SchemaUpdate(SCHEMA,
SCHEMA_LAST_COLUMN_ID)
+ .setIdentifierFields(Sets.newHashSet("id"))
+ .apply();
+
+ Schema newSchema = new SchemaUpdate(schemaWithIdentifierFields,
SCHEMA_LAST_COLUMN_ID)
+ .renameColumn("id", "id2")
+ .apply();
+
+ Assert.assertEquals("rename should not affect identifier fields",
+ Sets.newHashSet(SCHEMA.findField("id").fieldId()),
+ newSchema.identifierFieldIds());
+ }
+
+ @Test
+ public void testMoveIdentifierFields() {
+ Schema schemaWithIdentifierFields = new SchemaUpdate(SCHEMA,
SCHEMA_LAST_COLUMN_ID)
+ .allowIncompatibleChanges()
Review comment:
This isn't needed.
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