packetcable-policy-server/src/main/java/org/opendaylight/controller/packetcable/provider/validation/ValidationException.java

   1 /*
   2  * Copyright (c) 2015 CableLabs and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.controller.packetcable.provider.validation;
  10
  11 import static com.google.common.base.Preconditions.checkNotNull;
  12
  13 import com.google.common.collect.ImmutableList;
  14 import java.util.Arrays;
  15 import java.util.Collection;
  16 import java.util.Iterator;
  17
  18 /**
  19  * @author rvail
  20  */
  21 public class ValidationException extends Exception {
  22
  23     private final ImmutableList<String> errorMessages;
  24
  25     public ValidationException(final String... errorMessages) {
  26         super(concat(Arrays.asList(errorMessages)));
  27         this.errorMessages = ImmutableList.copyOf(errorMessages);
  28     }
  29
  30     private static String concat(Collection<String> strings) {
  31         checkNotNull(strings);
  32
  33         final Iterator<String> iter = strings.iterator();
  34         if (!iter.hasNext()) {
  35             return "";
  36         }
  37
  38         StringBuilder sb = new StringBuilder(iter.next());
  39         while (iter.hasNext()) {
  40             sb.append(" : ").append(iter.next());
  41         }
  42
  43         return sb.toString();
  44     }
  45
  46     public ValidationException(final Collection<String> errorMessages) {
  47         super(concat(errorMessages));
  48         this.errorMessages = ImmutableList.copyOf(errorMessages);
  49     }
  50
  51     public ImmutableList<String> getErrorMessages() {
  52         return errorMessages;
  53     }
  54 }