filemgr/src/main/java/org/apache/oodt/cas/filemgr/cli/action/AbstractDeleteProductCliAction.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.oodt.cas.filemgr.cli.action;

//OODT imports
import java.io.File;
import java.net.URI;
import java.util.List;

//OODT imports
import org.apache.oodt.cas.cli.exception.CmdLineActionException;
import org.apache.oodt.cas.filemgr.structs.Product;
import org.apache.oodt.cas.filemgr.structs.Reference;
import org.apache.oodt.cas.filemgr.system.FileManagerClient;

/**
 * A abstract {@link CmdLineAction} for deleting {@link Product}s.
 * 
 * @author bfoster (Brian Foster)
 */
public abstract class AbstractDeleteProductCliAction extends FileManagerCliAction {

   @Override
   public void execute(ActionMessagePrinter printer)
         throws CmdLineActionException {
      Product p = null;
      try (FileManagerClient client = getClient()) {
         p = getProductToDelete();
         List<Reference> refs = client.getProductReferences(p);
         if (refs == null) {
            throw new Exception("FileManager returned null References");
         }
         for (Reference ref : refs) {
            if (!client.removeFile(new File(new URI(ref.getDataStoreReference()))
                  .getAbsolutePath())) {
               throw new Exception("Failed to delete file '"
                     + ref.getDataStoreReference() + "'");
            }
         }
         if (client.removeProduct(p)) {
            printer.println("Successfully deleted product '"
                  + p.getProductName() + "'");
         } else {
            throw new Exception("Delete product returned false");
         }
      } catch (Exception e) {
         throw new CmdLineActionException("Failed to delete product '" + p
               + "' : " + e.getMessage(), e);
      }
   }

   protected abstract Product getProductToDelete() throws Exception;
}