Example usage for org.apache.commons.collections4.comparators FixedOrderComparator FixedOrderComparator

Introduction

In this page you can find the example usage for org.apache.commons.collections4.comparators FixedOrderComparator FixedOrderComparator.

Prototype

public FixedOrderComparator(final List<T> items) 

Source Link

Document

Constructs a FixedOrderComparator which uses the order of the given list to compare the objects.

Usage

From source file:com.feilong.core.util.SortUtilTest.java

@Test
public void testSelectArray() {
    User zhangfei = new User("", 23);
    User guanyu = new User("", 30);
    User liubei = new User("", 25);
    List<User> list = toList(zhangfei, guanyu, liubei);

    String[] names = { "", "" };
    List<User> select = CollectionsUtil.select(list, "name", names);
    sort(select, new PropertyComparator<User>("name", new FixedOrderComparator<>(names)));
    LOGGER.debug(JsonUtil.formatWithIncludes(select, "name", "age"));

    List<User> select2 = CollectionsUtil.select(list, "name", names);
    LOGGER.debug(//from   ww w.  j  av a  2  s. com
            JsonUtil.formatWithIncludes(sortByFixedOrderPropertyValues(select2, "name", names), "name", "age"));
}

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From source file:chiliad.parser.pdf.cli.ParserCli.java

public void showHelpMessage() {
    HelpFormatter helpFormatter = new HelpFormatter();
    helpFormatter.setOptionComparator(new FixedOrderComparator(options.getOptions().toArray()));
    helpFormatter.setOptPrefix(optionPrefix);
    helpFormatter.printHelp(helpMessage, options);
}

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From source file:com.feilong.core.util.AggregateUtilTest.java

/**
 * TestStatisticsUtilTest.//from   w  ww .j a  va  2 s . c  o  m
 */
@Test
public void testStatisticsUtilTest() {
    String[] planets = { "Mercury", "Venus", "Earth", "Mars" };
    Comparator<String> distanceFromSun = new FixedOrderComparator<>(planets);
    Predicate<String> predicate = new ComparatorPredicate<String>("Venus", distanceFromSun, Criterion.GREATER);

    LOGGER.debug("{}", predicate.evaluate("Earth"));
}

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From source file:com.feilong.core.util.comparator.BeanComparatorUtil.java

/**
 * Property comparator./*from   ww w . j a  v a 2s .c  o m*/
 *
 * @param <V>
 *            the value type
 * @param <T>
 *            the generic type
 * @param propertyName
 *            T??,Possibly indexed and/or nested name of the property to be modified,??
 *            <a href="../../bean/BeanUtil.html#propertyName">propertyName</a>,value  {@link Comparable}?.
 * @param propertyValues
 *            the property values
 * @return the comparator
 * @throws NullPointerException
 *              <code>propertyName</code> null,<code>propertyValues</code> null
 * @throws IllegalArgumentException
 *              <code>propertyName</code> blank
 * @see PropertyComparator#PropertyComparator(String, Comparator)
 * @see FixedOrderComparator#FixedOrderComparator(Object...)
 */
@SafeVarargs
public static <V, T> Comparator<T> propertyComparator(String propertyName, V... propertyValues) {
    Validate.notBlank(propertyName, "propertyName can't be blank!");
    Validate.notNull(propertyValues, "propertyValues can't be null!");
    return new PropertyComparator<>(propertyName, new FixedOrderComparator<>(propertyValues));
}

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From source file:com.feilong.core.util.comparator.BeanComparatorUtil.java

/**
 * Property comparator.//from  w w w  . j a v  a2 s  .  c  om
 *
 * @param <V>
 *            the value type
 * @param <T>
 *            the generic type
 * @param propertyName
 *            T??,Possibly indexed and/or nested name of the property to be modified,??
 *            <a href="../../bean/BeanUtil.html#propertyName">propertyName</a>,value  {@link Comparable}?.
 * @param propertyValues
 *            the property values
 * @return the comparator
 * @throws NullPointerException
 *              <code>propertyName</code> null,<code>propertyValues</code> null
 * @throws IllegalArgumentException
 *              <code>propertyName</code> blank
 * @see PropertyComparator#PropertyComparator(String, Comparator)
 * @see FixedOrderComparator#FixedOrderComparator(List)
 */
public static <V, T> Comparator<T> propertyComparator(String propertyName, List<V> propertyValues) {
    Validate.notBlank(propertyName, "propertyName can't be blank!");
    Validate.notNull(propertyValues, "propertyValues can't be null!");
    return new PropertyComparator<>(propertyName, new FixedOrderComparator<>(propertyValues));
}

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