enumsupport.reverselookupmapfactory.DeduplicatdeNumberSetFactory.java Source code

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Here is the source code for enumsupport.reverselookupmapfactory.DeduplicatdeNumberSetFactory.java

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package enumsupport.reverselookupmapfactory;

import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.apache.commons.lang3.Range;

/**
 * 1????????????(??)
 *
 * @author normal
 * @param <T> ?
 */
public final class DeduplicatdeNumberSetFactory<T extends Number> {

    public DeduplicatdeNumberSetFactory() {
    }

    /**
     *
     * @param numberRange ???
     * @param number  null??
     * @param numbers ??????null??????
     * @return ????(??)
     * @throws NullPointerException ?????null?????
     * @throws IllegalArgumentException ??numberrange???????
     */
    public Set<T> makeSet(Range<T> numberRange, T number, T... numbers)
            throws NullPointerException, IllegalArgumentException {

        List<T> t = new ArrayList<>();
        t.add(number);

        if (numbers != null) {
            t.addAll(Arrays.asList(numbers));
        }
        for (T num : t) {
            if (num == null) {
                throw new IllegalArgumentException("?null???????");
            }
            if (!numberRange.contains(num)) {
                MessageFormat msg = new MessageFormat(
                        "????????????={0}");
                Object[] parameters = { num };
                throw new IllegalArgumentException(msg.format(parameters));
            }
        }
        Set<T> numberSet_t = Collections.synchronizedSet(new HashSet<>());
        numberSet_t.addAll(t);
        return Collections.unmodifiableSet(numberSet_t);
    }

}