package org.kuali.ole.docstore.engine.service;
   
   import org.kuali.ole.docstore.common.document.BibTree;
   import org.kuali.ole.docstore.engine.service.storage.DocstoreRDBMSStorageService;
   import org.kuali.rice.core.api.resourceloader.GlobalResourceLoader;
   import org.springframework.transaction.PlatformTransactionManager;
   import org.springframework.transaction.TransactionStatus;
   import org.springframework.transaction.support.TransactionCallback;
   import org.springframework.transaction.support.TransactionTemplate;
  
  import javax.servlet.ServletException;
  import java.io.IOException;
  import java.util.concurrent.Callable;
  
  /**
   * Created by pvsubrah on 5/26/15.
   */
  public class BibTreeProcessor implements Callable {
      private BibTree bibTree;
      private PlatformTransactionManager transactionManager;
  
      public BibTreeProcessor(BibTree bibTree) {
          this.bibTree = bibTree;
      }
  
      @Override
      public Object call() throws Exception {
          final BibTree localBibTree = this.bibTree;
          final TransactionTemplate template = new TransactionTemplate(getTransactionManager());
          try {
              template.execute(new TransactionCallback<Object>() {
                  @Override
                  public Object doInTransaction(TransactionStatus status) {
                      new DocstoreRDBMSStorageService().processBibTree(localBibTree);
                      return localBibTree;
  
                  }
              });
          } catch (RuntimeException ex) {
              if (ex.getCause() instanceof IOException) {
                  throw (IOException) ex.getCause();
              } else if (ex.getCause() instanceof ServletException) {
                  throw (ServletException) ex.getCause();
              }
              throw ex;
          } finally {
              bibTree = null;
              this.transactionManager = null;
  
          }
          return localBibTree;
      }
  
      public PlatformTransactionManager getTransactionManager() {
          if (transactionManager == null) {
              transactionManager = GlobalResourceLoader.getService("transactionManager");
          }
          return this.transactionManager;
      }
  }