01: /*
02:
03: Derby - Class org.apache.derby.impl.sql.execute.DropJarConstantAction
04:
05: Licensed to the Apache Software Foundation (ASF) under one or more
06: contributor license agreements. See the NOTICE file distributed with
07: this work for additional information regarding copyright ownership.
08: The ASF licenses this file to you under the Apache License, Version 2.0
09: (the "License"); you may not use this file except in compliance with
10: the License. You may obtain a copy of the License at
11:
12: http://www.apache.org/licenses/LICENSE-2.0
13:
14: Unless required by applicable law or agreed to in writing, software
15: distributed under the License is distributed on an "AS IS" BASIS,
16: WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17: See the License for the specific language governing permissions and
18: limitations under the License.
19:
20: */
21:
22: package org.apache.derby.impl.sql.execute;
23:
24: import org.apache.derby.iapi.services.sanity.SanityManager;
25: import org.apache.derby.iapi.error.StandardException;
26: import org.apache.derby.iapi.sql.execute.ConstantAction;
27:
28: import org.apache.derby.iapi.sql.Activation;
29:
30: import org.apache.derby.catalog.UUID;
31:
32: /**
33: * Constant action to drop an external jar file from a database.
34: *
35: */
36: class DropJarConstantAction extends DDLConstantAction {
37:
38: private final UUID id;
39: private final String schemaName;
40: private final String sqlName;
41:
42: //////////////////////////////////////////////////////////////
43: //
44: // CONSTRUCTORS
45: //
46: //////////////////////////////////////////////////////////////
47:
48: /**
49: * Make the ConstantAction to drop a jar file to database.
50: *
51: * @param id The id for the jar file
52: * @param schemaName The SchemaName for the jar file.
53: * @param sqlName The sqlName for the jar file.
54: */
55: DropJarConstantAction(UUID id, String schemaName, String sqlName) {
56: this .id = id;
57: this .schemaName = schemaName;
58: this .sqlName = sqlName;
59: }
60:
61: //////////////////////////////////////////////////////////////
62: //
63: // OBJECT SHADOWS
64: //
65: //////////////////////////////////////////////////////////////
66:
67: public String toString() {
68: // Do not put this under SanityManager.DEBUG - it is needed for
69: // error reporting.
70: return "DROP JAR FILE " + schemaName + "." + sqlName;
71: }
72:
73: //////////////////////////////////////////////////////////////
74: //
75: // CONSTANT ACTION METHODS
76: //
77: //////////////////////////////////////////////////////////////
78:
79: /**
80: * @see ConstantAction#executeConstantAction
81: * @exception StandardException Thrown on failure
82: */
83: public void executeConstantAction(Activation activation)
84: throws StandardException {
85: JarUtil.drop(null, schemaName, sqlName, purgeOnCommit());
86: }
87:
88: //
89: // Replication can over-ride this to defer purging dropped jar
90: // files that remain in the stage.
91: protected boolean purgeOnCommit() {
92: return true;
93: }
94:
95: }
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