Source Code Cross Referenced for PermissionsDescriptor.java in  » Database-DBMS » db-derby-10.2 » org » apache » derby » iapi » sql » dictionary » 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.iapi.sql.dictionary 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:
003:           Derby - Class org.apache.derby.iapi.sql.dictionary.PermissionsDescriptor
004:
005:           Licensed to the Apache Software Foundation (ASF) under one or more
006:           contributor license agreements.  See the NOTICE file distributed with
007:           this work for additional information regarding copyright ownership.
008:           The ASF licenses this file to you under the Apache License, Version 2.0
009:           (the "License"); you may not use this file except in compliance with
010:           the License.  You may obtain a copy of the License at
011:
012:        	  http://www.apache.org/licenses/LICENSE-2.0
013:
014:           Unless required by applicable law or agreed to in writing, software
015:           distributed under the License is distributed on an "AS IS" BASIS,
016:           WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
017:           See the License for the specific language governing permissions and
018:           limitations under the License.
019:
020:         */
021:
022:        package org.apache.derby.iapi.sql.dictionary;
023:
024:        import org.apache.derby.catalog.UUID;
025:        import org.apache.derby.iapi.error.StandardException;
026:        import org.apache.derby.iapi.sql.depend.Provider;
027:        import org.apache.derby.iapi.sql.dictionary.DataDictionary;
028:        import org.apache.derby.iapi.services.sanity.SanityManager;
029:
030:        /**
031:         * This class is used by rows in the SYS.SYSTABLEPERMS, SYS.SYSCOLPERMS, and SYS.SYSROUTINEPERMS
032:         * system tables.
033:         */
034:        public abstract class PermissionsDescriptor extends TupleDescriptor
035:                implements  Cloneable, Provider {
036:            protected UUID oid;
037:            private String grantee;
038:            private final String grantor;
039:
040:            PermissionsDescriptor(DataDictionary dd, String grantee,
041:                    String grantor) {
042:                super (dd);
043:                this .grantee = grantee;
044:                this .grantor = grantor;
045:            }
046:
047:            public Object clone() {
048:                try {
049:                    return super .clone();
050:                } catch (java.lang.CloneNotSupportedException cnse) {
051:                    if (SanityManager.DEBUG)
052:                        SanityManager.THROWASSERT("Could not clone a "
053:                                + getClass().getName());
054:                    return null;
055:                }
056:            }
057:
058:            public abstract int getCatalogNumber();
059:
060:            /**
061:             * @return true iff the key part of this permissions descriptor equals the key part of another permissions
062:             *		 descriptor.
063:             */
064:            protected boolean keyEquals(PermissionsDescriptor other) {
065:                return grantee.equals(other.grantee);
066:            }
067:
068:            /**
069:             * @return the hashCode for the key part of this permissions descriptor
070:             */
071:            protected int keyHashCode() {
072:                return grantee.hashCode();
073:            }
074:
075:            public void setGrantee(String grantee) {
076:                this .grantee = grantee;
077:            }
078:
079:            /*----- getter functions for rowfactory ------*/
080:            public final String getGrantee() {
081:                return grantee;
082:            }
083:
084:            public final String getGrantor() {
085:                return grantor;
086:            }
087:
088:            /**
089:             * Gets the UUID of the table.
090:             *
091:             * @return	The UUID of the table.
092:             */
093:            public UUID getUUID() {
094:                return oid;
095:            }
096:
097:            /**
098:             * Sets the UUID of the table
099:             *
100:             * @param oid	The UUID of the table to be set in the descriptor
101:             */
102:            public void setUUID(UUID oid) {
103:                this .oid = oid;
104:            }
105:
106:            /**
107:             * This method checks if the passed authorization id is same as the owner 
108:             * of the object on which this permission is defined. This method gets
109:             * called by create view/constraint/trigger to see if this permission 
110:             * needs to be saved in dependency system for the view/constraint/trigger. 
111:             * If the same user is the owner of the the object being accessed and the 
112:             * newly created object, then no need to keep this privilege dependency 
113:             *
114:             * @return boolean	If passed authorization id is owner of the table
115:             */
116:            public abstract boolean checkOwner(String authorizationId)
117:                    throws StandardException;
118:
119:            //////////////////////////////////////////////
120:            //
121:            // PROVIDER INTERFACE
122:            //
123:            ////////////////////////////////////////////////////////////////////
124:
125:            /**
126:             * Get the provider's UUID
127:             *
128:             * @return 	The provider's UUID
129:             */
130:            public UUID getObjectID() {
131:                return oid;
132:            }
133:
134:            /**
135:             * Is this provider persistent?  A stored dependency will be required
136:             * if both the dependent and provider are persistent.
137:             *
138:             * @return boolean              Whether or not this provider is persistent.
139:             */
140:            public boolean isPersistent() {
141:                return true;
142:            }
143:        }
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