01: /*
02: * Copyright 2004-2008 H2 Group. Licensed under the H2 License, Version 1.0
03: * (http://h2database.com/html/license.html).
04: * Initial Developer: H2 Group
05: */
06: package org.h2.command.ddl;
07:
08: import java.sql.SQLException;
09:
10: import org.h2.constant.ErrorCode;
11: import org.h2.engine.UserAggregate;
12: import org.h2.engine.Database;
13: import org.h2.engine.Session;
14: import org.h2.message.Message;
15:
16: /**
17: * This class represents the statement
18: * DROP AGGREGATE
19: */
20: public class DropAggregate extends DefineCommand {
21:
22: private String name;
23: private boolean ifExists;
24:
25: public DropAggregate(Session session) {
26: super (session);
27: }
28:
29: public int update() throws SQLException {
30: session.getUser().checkAdmin();
31: session.commit(true);
32: Database db = session.getDatabase();
33: UserAggregate aggregate = db.findAggregate(name);
34: if (aggregate == null) {
35: if (!ifExists) {
36: throw Message.getSQLException(
37: ErrorCode.AGGREGATE_NOT_FOUND_1, name);
38: }
39: } else {
40: db.removeDatabaseObject(session, aggregate);
41: }
42: return 0;
43: }
44:
45: public void setName(String name) {
46: this .name = name;
47: }
48:
49: public void setIfExists(boolean ifExists) {
50: this.ifExists = ifExists;
51: }
52:
53: }
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