private void verifyViewCreation() {
// replace works for new view
doCreateView(temporaryCreateView, true);
// replace works for existing view
doCreateView(temporaryCreateView, true);
// create fails for existing view
try {
doCreateView(temporaryCreateView, false);
fail("create existing should fail");
} catch (ViewAlreadyExistsException e) {
assertEquals(e.getViewName(), temporaryCreateView);
}
// drop works when view exists
metadata.dropView(SESSION, temporaryCreateView);
assertEquals(metadata.getViews(SESSION, temporaryCreateView.toSchemaTablePrefix()).size(), 0);
assertFalse(
metadata
.listViews(SESSION, temporaryCreateView.getSchemaName())
.contains(temporaryCreateView));
// drop fails when view does not exist
try {
metadata.dropView(SESSION, temporaryCreateView);
fail("drop non-existing should fail");
} catch (ViewNotFoundException e) {
assertEquals(e.getViewName(), temporaryCreateView);
}
// create works for new view
doCreateView(temporaryCreateView, false);
}
private void doCreateView(SchemaTableName viewName, boolean replace) {
String viewData = "test data";
metadata.createView(SESSION, viewName, viewData, replace);
Map<SchemaTableName, String> views = metadata.getViews(SESSION, viewName.toSchemaTablePrefix());
assertEquals(views.size(), 1);
assertEquals(views.get(viewName), viewData);
assertTrue(metadata.listViews(SESSION, viewName.getSchemaName()).contains(viewName));
}
@Test
public void testListUnknownSchema() {
assertNull(
metadata.getTableHandle(SESSION, new SchemaTableName(INVALID_DATABASE, INVALID_TABLE)));
assertEquals(metadata.listTables(SESSION, INVALID_DATABASE), ImmutableList.of());
assertEquals(
metadata.listTableColumns(SESSION, new SchemaTablePrefix(INVALID_DATABASE, INVALID_TABLE)),
ImmutableMap.of());
assertEquals(metadata.listViews(SESSION, INVALID_DATABASE), ImmutableList.of());
assertEquals(
metadata.getViews(SESSION, new SchemaTablePrefix(INVALID_DATABASE, INVALID_TABLE)),
ImmutableMap.of());
}