Github user paul-rogers commented on a diff in the pull request:
https://github.com/apache/drill/pull/666#discussion_r90699251
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/planner/sql/handlers/ViewHandler.java
---
@@ -74,36 +74,51 @@ public PhysicalPlan getPlan(SqlNode sqlNode) throws
ValidationException, RelConv
final SchemaPlus defaultSchema = context.getNewDefaultSchema();
final AbstractSchema drillSchema =
SchemaUtilites.resolveToMutableDrillSchema(defaultSchema,
createView.getSchemaPath());
- final String schemaPath = drillSchema.getFullSchemaName();
final View view = new View(newViewName, viewSql,
newViewRelNode.getRowType(),
SchemaUtilites.getSchemaPathAsList(defaultSchema));
- final Table existingTable =
SqlHandlerUtil.getTableFromSchema(drillSchema, newViewName);
+ validateViewCreationPossibility(drillSchema, newViewName,
createView.getReplace());
+
+ final boolean replaced = drillSchema.createView(view);
+ final String summary = String.format("View '%s' %s successfully in
'%s' schema",
+ createView.getName(), replaced ? "replaced" : "created",
drillSchema.getFullSchemaName());
+
+ return DirectPlan.createDirectPlan(context, true, summary);
+ }
+
+ /**
+ * Validates if view can be created in indicated schema:
+ * checks if object (persistent / temporary table) with the same exists
+ * in indicated schema, or if view exists but replace flag is not set.
+ *
+ * @param drillSchema schema where views will be created
+ * @param viewName view name
+ * @param replaceView replace view if exists
+ * @throws UserException if views can be created in indicated schema
+ */
+ private void validateViewCreationPossibility(AbstractSchema
drillSchema, String viewName, boolean replaceView) {
--- End diff --
Maybe answered later. If we create a view on a temp table, is the view
itself temporary for the session only?
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