com.cloud.utils.Utils.java Source code

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//
// 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 com.cloud.utils;

import java.util.Map;

import com.google.common.base.Predicate;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Maps;

public class Utils {
    public static <K, V> Map getImmutableMap(Map<K, V> map) {
        Map<K, V> filteredMap = Maps.filterValues(map, new Predicate<V>() {
            public boolean apply(final V input) {
                return input != null;
            }
        });

        return ImmutableMap.<K, V>builder().putAll(filteredMap).build();
    }
}