Examples of de.innovationgate.webgate.api.utils.MasterSessionTask

Package de.innovationgate.webgate.api.utils

Examples of de.innovationgate.webgate.api.utils.MasterSessionTask

de.innovationgate.webgate.api.utils.MasterSessionTask
Tool class that provides a convenient way to execute a custom task on a database in a master session on a parallel thread. Login data of the current thread is untouched. Just subclass this one and implement method exec() that gets a reference to the database from the constructor. When exec() gets executed the database is already open in master session. The session will be closed automatically once exec() is thru.

        // In case of a design changed event by a design provider we must spawn
        // the processing to a separate thread, bc. we cannot be sure that the
        // consumer db that uses the provider was opened, yet we cannot open it
        // in the same thread bc. this might be a security leak
        
        MasterSessionTask task = new MasterSessionTask(event.getDatabase()) {
            protected void exec(WGDatabase db) throws Throwable {
                try {
                    checkForUpdates(db);
                }
                catch (Exception e) {
                    _log.error("Error checking for system container update", e);
                }
            }
        };
        task.run();
                
    }

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            if (!Groq.selectFrom(event.getUpdateLogs()).wherePropertyEquals("documentKey", SYSTEMFC_DOCKEY).hasNext()) {
                return;
            }
            
            // If so, we reread the definition in a master session task
            MasterSessionTask task = new MasterSessionTask(event.getDatabase()) {
                protected void exec(WGDatabase db) throws Throwable {
                    WGFileContainer system = db.getFileContainer("system");
                    if (system != null && system.getLastModified().getTime() > _definitionTime && system.hasFile(MODEL_FILE)) {
                        _core.getLog().info("Updating HDB model for database " + db.getDbReference());
                        readDefinition(system);
                    }
                }
            };
            
            task.runWithExceptions();
                   
        }
        catch (Throwable e) {
            _core.getLog().error("Error updating HDB model for database" + event.getDatabase().getDbReference(), e);
        }

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        }


        boolean result = getCore().commitTransaction();
        if (result == true) {
            getSessionContext().setTransactionActive(false);
            MasterSessionTask performDBUpdates = new MasterSessionTask(this) {
                
                @Override
                protected void exec(WGDatabase db) throws Throwable {
                    db.checkDatabaseUpdates();                    
                }
            };
            try {
                performDBUpdates.runWithExceptions();
            }
            catch (Throwable e) {
                throw new WGBackendException("Unable to perform db update on transaction commit.", e);
            }
            return true;

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        // cache management will happen automatically by WGDocument.save()
        if (designProvider instanceof WGVirtualDesignProvider) {
            return;
        }


        MasterSessionTask task = new MasterSessionTask(this) {
            protected void exec(WGDatabase db) throws Throwable {
                processChanges(event.getUpdateLogs());
            }
        };


        if (!task.run()) {
            WGFactory.getLogger().error("Exception on design change processing", task.getThrowable());
        }
    }

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                   _notifying = true;
               }
               
               // Clear the cache of the slave db
               if (_slaveDB != null && _slaveDB.isConnected()) {
                   MasterSessionTask task = new MasterSessionTask(_slaveDB) {
                       protected void exec(WGDatabase db) throws Throwable {
                           fireUpdateChangeEvent(new WGDesignChangeEvent(DBDesignProvider.this, db, new ArrayList()));
                           db.refresh();
                       }
                   };
                   task.run();
               }
               return true;
     
           }
           else {

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     * @throws WGAPIException
     */
    public void changeContentType(WGContentType contentType) throws WGAPIException {
      
      // master task to check for unreleased content
      MasterSessionTask checkUnreleasedContent = new MasterSessionTask(getDatabase()) {
      protected void exec(WGDatabase db) throws Throwable {
          Iterator contents = getAllContent().iterator();
          while (contents.hasNext()) {
            WGContent content = (WGContent) contents.next();
            if (!content.getStatus().equals(WGContent.STATUS_RELEASE)) {
              throw new WGIllegalStateException("ContentType cannot be changed bc. there is unreleased content in draft or review state.");
            }        
          }
        
      }        
      };
      
      // check for unreleased content
      try {
      checkUnreleasedContent.runWithExceptions();
    } catch (WGAPIException e)  {
      throw e;
    } catch (Throwable e) {
      throw new WGAPIException(e.getMessage(), e);
    }

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                WGFactory.getLogger().error("Exception retrieving content count from " + getDocumentKey(), e);
            }
            
            
            // Techique 2: Retrieve number of contents from master session
            MasterSessionTask task = new MasterSessionTask(getDatabase()) {
                protected void exec(WGDatabase db) throws Throwable {
                    setResult(new Integer(WGStructEntry.this.getAllContent(true).size()));
                }
            };
            
            if (task.run() == true) {
                contentCount = ((Integer) task.getResult());;
            }
            else {
                throw new WGAPIException("Exception retrieving content count", task.getThrowable());
            }
        }
        
        return contentCount.intValue();

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Related Classes of de.innovationgate.webgate.api.utils.MasterSessionTask

de.innovationgate.webgate.api.WGDatabase

de.innovationgate.webgate.api.WGStructEntry

de.innovationgate.wgpublisher.design.db.DBDesignProvider

de.innovationgate.wgpublisher.hdb.HDBModel

de.innovationgate.wgpublisher.SystemContainerManager

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