gov.nih.nci.cabig.caaers.CollectionUtil.java Source code

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Here is the source code for gov.nih.nci.cabig.caaers.CollectionUtil.java

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/*******************************************************************************
 * Copyright SemanticBits, Northwestern University and Akaza Research
 * 
 * Distributed under the OSI-approved BSD 3-Clause License.
 * See http://ncip.github.com/caaers/LICENSE.txt for details.
 ******************************************************************************/
package gov.nih.nci.cabig.caaers;

import gov.nih.nci.cabig.caaers.domain.Retireable;
import org.apache.commons.lang.StringUtils;

import java.util.*;

/**
 * @author Ion C. Olaru
 */
public class CollectionUtil<T extends Retireable> {
    public static <T extends Retireable> List<T> getActiveObjects(List<T> objects) {
        List<T> l = new ArrayList<T>();
        for (Retireable object : objects) {
            if (!object.isRetired())
                l.add((T) object);
        }
        return l;
    }

    public static List<Integer> subtract(Collection<Integer> a, Collection<Integer> b) {
        Set<Integer> y = new HashSet<Integer>(b);
        Set<Integer> z = new HashSet<Integer>();
        for (Integer i : a) {
            if (y.add(i))
                z.add(i);
        }
        return new ArrayList(z);
    }

}