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Revision 1413

Added by Jing Tao over 21 years ago

Add code to handle additional access data and reference.

        private AccessRule accessRule = null;
        private Hashtable topLevelAccessControlMap = new Hashtable();
        private Hashtable additionalAccessControlMap = new Hashtable();
        private Vector describesId = new Vector(); // store the ids in
                                           //additionalmetadata/describes
        // Constant
        private static final String DESCRIBES = "describes";
        private static final String ADDITIONALMETADATA = "additionalMetadata";
        private static final String ORDER = "order";
        private static final String ID ="id";
         /** Construct an instance of the handler class
        private static final String REFERENCES = "references";
        /** Construct an instance of the handler class
+        *
         * @param conn the JDBC connection to which information is written
         * @param action - "INSERT" or "UPDATE"
-...
+         }
          // Set up a access rule
          // Set up a access rule for allow
          if (parentNode.getTagName() != null &&
            (parentNode.getTagName()).equals(ACCESS) && localName.equals(ALLOW))
+         {
-...
            accessRule.setPermissionType(ALLOW);
+         }
          // set up an access rule
          if (parentNode.getTagName() != null
          // set up an access rule for den
          else if (parentNode.getTagName() != null
            && (parentNode.getTagName()).equals(ACCESS) && localName.equals(DENY))
+         {
            accessRule = new AccessRule();
            //set permission type "allow"
            accessRule.setPermissionType(DENY);
+         }
          // Add the node to the stack, so that any text data can be
          // added as it is encountered
          nodeStack.push(currentNode);
-...
+             }
              accessRule.setPermission(permission);
+           }
            // put additionalmetadata/describes into vector
            else if (currentTag.equals(DESCRIBES))
+           {
               data = (textBuffer.toString()).trim();
               describesId.add(data);
+           }
            else if (currentTag.equals(REFERENCES) && processTopLeverAccess)
+           {
              // get reference
              data = (textBuffer.toString()).trim();
              // insert docid and reference id into toplevlerAccess
              topLevelAccessControlMap.put(docid, data);
+           }
            else if (currentTag.equals(REFERENCES) && processAdditionalAccess)
+           {
               // get reference
               data = (textBuffer.toString()).trim();
               additionalAccessControlMap.put(docid, data);
+           }
            // write text to db
            MetaCatUtil.debugMessage("Write text into DB in End Element", 50);
            writeTextForDBSAXNode(textBuffer, currentNode);
-...
            else if (processAdditionalAccess)
+           {
              // for additional control
              // put everything in describes value and access object into hash
              for ( int i=0; i<describesId.size(); i++)
+             {
                String subId = (String)describesId.elementAt(i);
                if (subId != null)
+               {
                  additionalAccessControlMap.put(subId, newAccessObject);
+               }
+             }
+           }
            //reset access section object
            accessObject = null;
+         }
          else if ((currentNode.getTagName()).equals(ADDITIONALMETADATA))
+         {
             //reset describesId
             describesId = new Vector();
+         }
+       }
        /** SAX Handler that receives notification of end of the document */
-...
                         e.getMessage());
+         }
+       }
       /* The method to write access rule into db. */
       /* The method to write all access rule intodb */
       private void writeAccessRuleToDB() throws SAXException
+      {
         //write top leve access rule
         writeTopLevelAccessRuleToDB();
         //write additional access rule
        // writeAddtionalAccessRuleToDB();
       }//writeAccessRuleToDB
       /* The method to write top level access rule into db. */
       private void writeTopLevelAccessRuleToDB() throws SAXException
+      {
         // for top document level
         AccessSection accessSection = (AccessSection)
                                               topLevelAccessControlMap.get(docid);
         // if accessSection is null stop it
         if( accessSection == null)
         Object accessSection = topLevelAccessControlMap.get(docid);
         // if accessSection is not null and isnot reference
         if( accessSection != null && (accessSection instanceof AccessSection) )
+        {
           return;
            String subSectionId = null;
            boolean top = true;
            AccessSection accessObj = (AccessSection)accessSection;
            writeGivenAccessRuleIntoDB(accessObj, top, subSectionId);
         }//if
         else
+        {
           // this is a reference
+        }
         String permOrder = accessSection.getPermissionOrder();
         String sql = "INSERT INTO xml_access (docid, principal_name, permission, "+
                      "perm_type, perm_order, accessfileid) VALUES " +
                      " (?, ?, ?, ?, ?, ?)";
         PreparedStatement pstmt = null;
       }//writeTopLevelAccessRuletoDB
         try
        /* The method to write addtional access rule into db. */
       private void writeAddtionalAccessRuleToDB() throws SAXException
+      {
          PreparedStatement pstmt = null;
          // additional access rule
          Enumeration en = additionalAccessControlMap.keys();
          boolean topLevel =false;
          while(en.hasMoreElements())
+        {
            try
+           {
              // Get subsection id
               String subSectionId = (String)en.nextElement();
               if (subSectionId == null)
+              {
                 // if id is null ignore the following lines
                 continue;
+              }
               // Get AccessSection Object
               Object accessSection = additionalAccessControlMap.get(subSectionId);
               if (accessSection == null)
+              {
                 // if accesssection is null ignore the following lines
                 continue;
+              }
               else if ( accessSection instanceof AccessSection )
+              {
                 // it is not reference
                 AccessSection accessObj = (AccessSection)accessSection;
                 writeGivenAccessRuleIntoDB(accessObj, topLevel, subSectionId);
+              }
               else
+              {
                 //this is reference
+              }
            }//try
            catch (Exception e)
+           {
              MetaCatUtil.debugMessage("error in EmlSAXHandler.writeAddtionalAccess"
                                        + ": "+e.getMessage(), 30);
+           }
         }//while
       }//writeAccessRuletoDB
       /* Write a gaven access rule into db*/
       private void writeGivenAccessRuleIntoDB(AccessSection accessSection,
                                              boolean topLevel, String subSectionId)
                                              throws SAXException
+      {
          if (accessSection == null)
+         {
            throw new SAXException("The access object is null");
+         }
           pstmt = connection.prepareStatement(sql);
           // Increase DBConnection usage count
           connection.increaseUsageCount(1);
           // Bind the values to the query
           pstmt.setString(1, docid);
           pstmt.setString(6, docid);
           pstmt.setString(5, permOrder);
           Vector accessRules = accessSection.getAccessRules();
           // go through every rule
           for (int i=0; i<accessRules.size(); i++)
           String permOrder = accessSection.getPermissionOrder();
           String sql = null;
           PreparedStatement pstmt = null;
           if (topLevel)
+          {
             AccessRule rule = (AccessRule)accessRules.elementAt(i);
             String permType = rule.getPermissionType();
             int permission = rule.getPermission();
             pstmt.setInt(3, permission);
             pstmt.setString(4, permType);
             // go through every principle in rule
             Vector nameVector = rule.getPrincipal();
             for ( int j = 0; j < nameVector.size(); j++ )
+           {
              String prName = (String)nameVector.elementAt(j);
              pstmt.setString(2, prName);
              pstmt.execute();
            }//for
          }//for
          pstmt.close();
         }//try
         catch (SQLException e)
+        {
           throw new
           SAXException("EMLSAXHandler.writeAccessRuletoDB(): " + e.getMessage());
         }//catch
         finally
+        {
           try
             sql = "INSERT INTO xml_access (docid, principal_name, permission, "+
                      "perm_type, perm_order, accessfileid) VALUES " +
                      " (?, ?, ?, ?, ?, ?)";
+          }
           else
+          {
             pstmt.close();
             sql ="INSERT INTO xml_access (docid, principal_name, "+
                 "permission, perm_type, perm_order, accessfileid, sectionid) VALUES"
                  +" (?, ?, ?, ?, ?, ?, ?)";
+          }
           catch(SQLException ee)
           try
+          {
             pstmt = connection.prepareStatement(sql);
             // Increase DBConnection usage count
             connection.increaseUsageCount(1);
             // Bind the values to the query
             pstmt.setString(1, docid);
             MetaCatUtil.debugMessage("Docid in accesstable: "+ docid);
             pstmt.setString(6, docid);
             MetaCatUtil.debugMessage("Accessfileid in accesstable: "+ docid);
             pstmt.setString(5, permOrder);
             MetaCatUtil.debugMessage("PermOder in accesstable: "+ permOrder);
             // if it is not top level, set subsection id
             if (!topLevel)
+            {
               pstmt.setString(7, subSectionId);
               MetaCatUtil.debugMessage("SubSectionId in accesstable: "+
                                         subSectionId);
+            }
             Vector accessRules = accessSection.getAccessRules();
             // go through every rule
             for (int i=0; i<accessRules.size(); i++)
+            {
               AccessRule rule = (AccessRule)accessRules.elementAt(i);
               String permType = rule.getPermissionType();
               int permission = rule.getPermission();
               pstmt.setInt(3, permission);
               MetaCatUtil.debugMessage("permission in accesstable: "+ permission);
               pstmt.setString(4, permType);
               MetaCatUtil.debugMessage("Permtype in accesstable: "+ permType);
               // go through every principle in rule
               Vector nameVector = rule.getPrincipal();
               for ( int j = 0; j < nameVector.size(); j++ )
+              {
                 String prName = (String)nameVector.elementAt(j);
                 pstmt.setString(2, prName);
                 MetaCatUtil.debugMessage("Principal in accesstable: "+prName);
                 pstmt.execute();
               }//for
             }//for
             pstmt.close();
           }//try
           catch (SQLException e)
+          {
             throw new
             SAXException("EMLSAXHandler.writeAccessRuletoDB(): " + ee.getMessage());
+          }
         }//finally
       }//writeAccessRuletoDB
             SAXException("EMLSAXHandler.writeAccessRuletoDB(): " + e.getMessage());
           }//catch
           finally
+          {
             try
+            {
               pstmt.close();
+            }
             catch(SQLException ee)
+            {
               throw new
               SAXException("EMLSAXHandler.writeAccessRuletoDB(): " +
               ee.getMessage());
+            }
           }//finally
+      }
+    }

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Revision 1413

Added by Jing Tao over 21 years ago