Adding JMCR-Stable version

[Benchmarks_CSolver.git] / JMCR-Stable / real-world application / MyDerby-10.3 / java / engine / org / apache / derby / impl / sql / compile / DropSchemaNode.java

diff --git a/JMCR-Stable/real-world application/MyDerby-10.3/java/engine/org/apache/derby/impl/sql/compile/DropSchemaNode.java b/JMCR-Stable/real-world application/MyDerby-10.3/java/engine/org/apache/derby/impl/sql/compile/DropSchemaNode.java
new file mode 100644 (file)
index 0000000..9563f0b
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+++ b/JMCR-Stable/real-world application/MyDerby-10.3/java/engine/org/apache/derby/impl/sql/compile/DropSchemaNode.java
@@ -0,0 +1,125 @@
+/*\r
+\r
+   Derby - Class org.apache.derby.impl.sql.compile.DropSchemaNode\r
+\r
+   Licensed to the Apache Software Foundation (ASF) under one or more\r
+   contributor license agreements.  See the NOTICE file distributed with\r
+   this work for additional information regarding copyright ownership.\r
+   The ASF licenses this file to you under the Apache License, Version 2.0\r
+   (the "License"); you may not use this file except in compliance with\r
+   the License.  You may obtain a copy of the License at\r
+\r
+      http://www.apache.org/licenses/LICENSE-2.0\r
+\r
+   Unless required by applicable law or agreed to in writing, software\r
+   distributed under the License is distributed on an "AS IS" BASIS,\r
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
+   See the License for the specific language governing permissions and\r
+   limitations under the License.\r
+\r
+ */\r
+\r
+package        org.apache.derby.impl.sql.compile;\r
+\r
+import org.apache.derby.iapi.sql.compile.CompilerContext;\r
+import org.apache.derby.iapi.sql.conn.Authorizer;\r
+import org.apache.derby.iapi.sql.conn.LanguageConnectionContext;\r
+import org.apache.derby.iapi.sql.execute.ConstantAction;\r
+\r
+import org.apache.derby.iapi.error.StandardException;\r
+\r
+import org.apache.derby.iapi.services.sanity.SanityManager;\r
+import org.apache.derby.iapi.reference.SQLState;\r
+\r
+/**\r
+ * A DropSchemaNode is the root of a QueryTree that represents \r
+ * a DROP SCHEMA statement.\r
+ *\r
+ */\r
+\r
+public class DropSchemaNode extends DDLStatementNode\r
+{\r
+       private int                     dropBehavior;\r
+       private String          schemaName;\r
+\r
+       /**\r
+        * Initializer for a DropSchemaNode\r
+        *\r
+        * @param schemaName            The name of the object being dropped\r
+        * @param dropBehavior          Drop behavior (RESTRICT | CASCADE)\r
+        *\r
+        */\r
+       public void init(Object schemaName, Object dropBehavior)\r
+               throws StandardException\r
+       {\r
+               initAndCheck(null);\r
+               this.schemaName = (String) schemaName;\r
+               this.dropBehavior = ((Integer) dropBehavior).intValue();\r
+       }\r
+\r
+       public void bindStatement() throws StandardException\r
+       {\r
+               \r
+        LanguageConnectionContext lcc = getLanguageConnectionContext();\r
+\r
+               /* \r
+               ** Users are not permitted to drop\r
+               ** the SYS or APP schemas.\r
+               */\r
+        if (getDataDictionary().isSystemSchemaName(schemaName))\r
+               {\r
+                       throw(StandardException.newException(\r
+                    SQLState.LANG_CANNOT_DROP_SYSTEM_SCHEMAS, this.schemaName));\r
+               }\r
+               \r
+        /* \r
+        ** In SQL authorization mode, the current authorization identifier\r
+        ** must be either the owner of the schema or the database owner \r
+        ** in order for the schema object to be dropped.\r
+        */\r
+        if (isPrivilegeCollectionRequired())\r
+        {\r
+            getCompilerContext().addRequiredSchemaPriv(schemaName, \r
+                lcc.getAuthorizationId(), \r
+                Authorizer.DROP_SCHEMA_PRIV);\r
+        }\r
+       }\r
+\r
+       /**\r
+        * Convert this object to a String.  See comments in QueryTreeNode.java\r
+        * for how this should be done for tree printing.\r
+        *\r
+        * @return      This object as a String\r
+        */\r
+\r
+       public String toString()\r
+       {\r
+               if (SanityManager.DEBUG)\r
+               {\r
+                       return super.toString() +\r
+                               "dropBehavior: " + "\n" + dropBehavior + "\n";\r
+               }\r
+               else\r
+               {\r
+                       return "";\r
+               }\r
+       }\r
+\r
+       public String statementToString()\r
+       {\r
+               return "DROP SCHEMA";\r
+       }\r
+\r
+       // inherit generate() method from DDLStatementNode\r
+\r
+\r
+       /**\r
+        * Create the Constant information that will drive the guts of Execution.\r
+        *\r
+        * @exception StandardException         Thrown on failure\r
+        */\r
+       public ConstantAction   makeConstantAction() throws StandardException\r
+       {\r
+               return  getGenericConstantActionFactory().getDropSchemaConstantAction(schemaName);\r
+       }\r
+}\r