GerardDellemann commented on a change in pull request #225: METAMODEL-1217 -
Fixes dropping JDBC Tables with view as TableType
URL: https://github.com/apache/metamodel/pull/225#discussion_r312814036
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File path:
jdbc/src/main/java/org/apache/metamodel/jdbc/JdbcDropTableBuilder.java
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@@ -63,10 +64,15 @@ public void execute() {
}
protected String createSqlStatement() {
- FromItem fromItem = new FromItem(getTable());
- String tableLabel = _queryRewriter.rewriteFromItem(fromItem);
+ final Table table = getTable();
+ final FromItem fromItem = new FromItem(table);
+ final String tableLabel = _queryRewriter.rewriteFromItem(fromItem);
- return "DROP TABLE " + tableLabel;
+ if (table.getType() != null && table.getType() == TableType.VIEW) {
+ return "DROP VIEW " + tableLabel;
Review comment:
TableType has the following values: TABLE, VIEW, SYSTEM_TABLE,
GLOBAL_TEMPORARY, LOCAL_TEMPORARY, ALIAS, SYNONYM, OTHER.
In SQL you either drop a table or a view (you don't drop a system_table,
that's a table). I would say that the VIEW value is only relevant for droping
views. All the other values beloing to droping tables.
TableType has no toString implementation. You could implement a custom
toString just for this JdbcDropTableBuilder#createSqlStatement() method, but I
don't think that would be a very representable implementation of that method.
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