1 | /* |
2 | * Copyright 2004-2014 H2 Group. Multiple-Licensed under the MPL 2.0, |
3 | * and the EPL 1.0 (http://h2database.com/html/license.html). |
4 | * Initial Developer: H2 Group |
5 | */ |
6 | package org.h2.command.ddl; |
7 | |
8 | import org.h2.api.ErrorCode; |
9 | import org.h2.command.CommandInterface; |
10 | import org.h2.engine.Database; |
11 | import org.h2.engine.Session; |
12 | import org.h2.message.DbException; |
13 | import org.h2.schema.Schema; |
14 | |
15 | /** |
16 | * This class represents the statement |
17 | * DROP SCHEMA |
18 | */ |
19 | public class DropSchema extends DefineCommand { |
20 | |
21 | private String schemaName; |
22 | private boolean ifExists; |
23 | |
24 | public DropSchema(Session session) { |
25 | super(session); |
26 | } |
27 | |
28 | public void setSchemaName(String name) { |
29 | this.schemaName = name; |
30 | } |
31 | |
32 | @Override |
33 | public int update() { |
34 | session.getUser().checkSchemaAdmin(); |
35 | session.commit(true); |
36 | Database db = session.getDatabase(); |
37 | Schema schema = db.findSchema(schemaName); |
38 | if (schema == null) { |
39 | if (!ifExists) { |
40 | throw DbException.get(ErrorCode.SCHEMA_NOT_FOUND_1, schemaName); |
41 | } |
42 | } else { |
43 | if (!schema.canDrop()) { |
44 | throw DbException.get(ErrorCode.SCHEMA_CAN_NOT_BE_DROPPED_1, schemaName); |
45 | } |
46 | db.removeDatabaseObject(session, schema); |
47 | } |
48 | return 0; |
49 | } |
50 | |
51 | public void setIfExists(boolean ifExists) { |
52 | this.ifExists = ifExists; |
53 | } |
54 | |
55 | @Override |
56 | public int getType() { |
57 | return CommandInterface.DROP_SCHEMA; |
58 | } |
59 | |
60 | } |