/*
 * Copyright (c) 2013-2015 Cinchapi, Inc.
 * 
 * Licensed 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.cinchapi.concourse.util;

import java.util.Collection;
import java.util.Iterator;
import java.util.List;

import com.google.common.collect.Lists;

/**
 * Yet another utility class that deals with {@link Collection Collections}.
 * 
 * @author Jeff Nelson
 */
public final class Collections {

    /**
     * Convert the given {@code collection} to a {@link List}, if necessary.
     * 
     * @param collection
     * @return a List that contains all the elements in {@code collection}.
     */
    public static <T> List<T> toList(Collection<T> collection) {
        return collection instanceof List ? (List<T>) collection : Lists
                .newArrayList(collection);
    }

    /**
     * Convert the given {@code collection} to a {@link List} of {@link Long}
     * values, if necessary. The client must attempt to do this for every
     * collection of records because CaSH always passes user input in as a
     * collection of {@link Integer integers}.
     * 
     * @param collection
     * @return a List that contains Long values
     */
    @SuppressWarnings("unchecked")
    public static <T> List<Long> toLongList(Collection<T> collection) {
        if(collection instanceof List && collection.size() > 0
                && collection.iterator().next() instanceof Long) {
            return (List<Long>) collection;
        }
        else {
            List<Long> list = Lists.newArrayList();
            Iterator<T> it = collection.iterator();
            while (it.hasNext()) {
                T elt = it.next();
                if(elt instanceof Number) {
                    list.add(((Number) elt).longValue());
                }
                else {
                    list.add((long) elt);
                }
            }
            return list;
        }
    }

    private Collections() {/* noop */}

}

@@ -2312,27 +2312,134 @@
     
-list.add((long) elt
+throw new ClassCastException(%22Cant convert object of type%22%0A                            + elt.getClass() + %22 to java.lang.Long%22
 );%0A 

fix compile error