Source Code Cross Referenced for RoutinePrivilegeInfo.java in  » Database-DBMS » db-derby-10.2 » org » apache » derby » impl » sql » execute » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » db derby 10.2 » org.apache.derby.impl.sql.execute 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


01:        /*
02:
03:           Derby - Class org.apache.derby.impl.sql.execute.RoutinePrivilegeInfo
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.sql.Activation;
25:        import org.apache.derby.iapi.services.sanity.SanityManager;
26:        import org.apache.derby.iapi.sql.conn.LanguageConnectionContext;
27:        import org.apache.derby.iapi.store.access.TransactionController;
28:        import org.apache.derby.iapi.sql.depend.DependencyManager;
29:        import org.apache.derby.iapi.sql.dictionary.RoutinePermsDescriptor;
30:        import org.apache.derby.iapi.sql.dictionary.AliasDescriptor;
31:        import org.apache.derby.iapi.sql.dictionary.StatementRoutinePermission;
32:        import org.apache.derby.iapi.sql.dictionary.DataDictionary;
33:        import org.apache.derby.iapi.sql.dictionary.DataDescriptorGenerator;
34:        import org.apache.derby.iapi.error.StandardException;
35:
36:        import java.util.Iterator;
37:        import java.util.List;
38:
39:        public class RoutinePrivilegeInfo extends PrivilegeInfo {
40:            private AliasDescriptor aliasDescriptor;
41:
42:            public RoutinePrivilegeInfo(AliasDescriptor aliasDescriptor) {
43:                this .aliasDescriptor = aliasDescriptor;
44:            }
45:
46:            /**
47:             *	This is the guts of the Execution-time logic for GRANT/REVOKE of a routine execute privilege
48:             *
49:             * @param activation
50:             * @param grant true if grant, false if revoke
51:             * @param grantees a list of authorization ids (strings)
52:             *
53:             * @exception StandardException		Thrown on failure
54:             */
55:            public void executeGrantRevoke(Activation activation,
56:                    boolean grant, List grantees) throws StandardException {
57:                // Check that the current user has permission to grant the privileges.
58:                LanguageConnectionContext lcc = activation
59:                        .getLanguageConnectionContext();
60:                DataDictionary dd = lcc.getDataDictionary();
61:                String currentUser = lcc.getAuthorizationId();
62:                TransactionController tc = lcc.getTransactionExecute();
63:
64:                // Check that the current user has permission to grant the privileges.
65:                checkOwnership(currentUser, aliasDescriptor, dd
66:                        .getSchemaDescriptor(aliasDescriptor.getSchemaUUID(),
67:                                tc), dd);
68:
69:                DataDescriptorGenerator ddg = dd.getDataDescriptorGenerator();
70:
71:                RoutinePermsDescriptor routinePermsDesc = ddg
72:                        .newRoutinePermsDescriptor(aliasDescriptor, currentUser);
73:
74:                dd.startWriting(lcc);
75:                for (Iterator itr = grantees.iterator(); itr.hasNext();) {
76:                    // Keep track to see if any privileges are revoked by a revoke 
77:                    // statement. If a privilege is not revoked, we need to raise a
78:                    // warning.
79:                    boolean privileges_revoked = false;
80:                    String grantee = (String) itr.next();
81:                    if (dd.addRemovePermissionsDescriptor(grant,
82:                            routinePermsDesc, grantee, tc)) {
83:                        privileges_revoked = true;
84:                        //Derby currently supports only restrict form of revoke execute
85:                        //privilege and that is why, we are sending invalidation action 
86:                        //as REVOKE_PRIVILEGE_RESTRICT rather than REVOKE_PRIVILEGE
87:                        dd.getDependencyManager().invalidateFor(
88:                                routinePermsDesc,
89:                                DependencyManager.REVOKE_PRIVILEGE_RESTRICT,
90:                                lcc);
91:                    }
92:
93:                    addWarningIfPrivilegeNotRevoked(activation, grant,
94:                            privileges_revoked, grantee);
95:                }
96:            } // end of executeConstantAction
97:        }
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