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    • org.fabric3.util.closure.CollectionUtils Maven / Gradle / Ivy

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    /*
 * Fabric3
 * Copyright (c) 2009-2015 Metaform Systems
 *
 * 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.
 * Portions originally based on Apache Tuscany 2007
 * licensed under the Apache 2.0 license.
 */
package org.fabric3.util.closure;

import java.util.ArrayList;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;

/**
 * Utility for applying closures on collections.
 */
public class CollectionUtils {

    private CollectionUtils() {
    }

    public static  List filter(List source, Closure filter) {
        List result = new ArrayList<>();
        for (OBJECT object : source) {
            if (filter.execute(object)) {
                result.add(object);
            }
        }
        return result;
    }

    public static  Set filter(Set source, Closure filter) {
        LinkedHashSet result = new LinkedHashSet<>();
        for (OBJECT object : source) {
            if (filter.execute(object)) {
                result.add(object);
            }
        }
        return result;

    }

    public static  Set transform(Set source, Closure transformer) {
        LinkedHashSet result = new LinkedHashSet<>();
        for (SOURCE object : source) {
            result.add(transformer.execute(object));
        }
        return result;
    }

}
    
    
    
    

    




    
    
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