Example usage for org.apache.commons.collections4 ListUtils indexOf

Introduction

In this page you can find the example usage for org.apache.commons.collections4 ListUtils indexOf.

Prototype

public static <E> int indexOf(final List<E> list, final Predicate<E> predicate) 

Source Link

Document

Finds the first index in the given List which matches the given predicate.

Usage

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

/**
 * list, <code>propertyName</code>  <code>value</code>?.
 * //from  ww w. jav a  2  s .  co  m
 * <h3>:</h3>
 * 
 * <blockquote>
 * 
 * <pre class="code">
 * 
 * List{@code <User>} list = new ArrayList{@code <User>}();
 * list.add(new User("", 23));
 * list.add(new User("", 24));
 * list.add(new User("", 25));
 * 
 * assertEquals(0, CollectionsUtil.indexOf(list, "name", ""));
 * </pre>
 * 
 * </blockquote>
 *
 * @param <O>
 *            the generic type
 * @param <V>
 *            the generic type
 * @param list
 *            the list
 * @param propertyName
 *            O??,Possibly indexed and/or nested name of the property to be modified,??
 *            <a href="../bean/BeanUtil.html#propertyName">propertyName</a>
 * @param propertyValue
 *            the value
 * @return  listnull  empty, -1<br>
 *         <code>propertyName</code> <code>value</code> list ? -1<br>
 * @see org.apache.commons.collections4.ListUtils#indexOf(List, Predicate)
 * @see BeanPredicateUtil#equalPredicate(String, Object)
 * @since 1.5.5
 */
public static <O, V> int indexOf(List<O> list, String propertyName, V propertyValue) {
    return ListUtils.indexOf(list, BeanPredicateUtil.<O, V>equalPredicate(propertyName, propertyValue));
}

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From source file:org.craftercms.engine.targeting.impl.TargetedContentStoreAdapter.java

protected boolean containsItem(final List<Item> list, final Item item) {
    int idx = ListUtils.indexOf(list, new Predicate<Item>() {

        @Override/* w  w  w .ja va  2 s. c  om*/
        public boolean evaluate(Item it) {
            return it.getName().equals(item.getName());
        }

    });

    return idx >= 0;
}

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From source file:org.peercast.pecaport.WanConnectionsAdapter.java

/**??WanConnection??????????-1*/
public int getConnectedPosition() {
    return ListUtils.indexOf(mConnections, new Predicate<WanConnection>() {
        @Override/*w w  w.  j  a  v a  2  s. c  o  m*/
        public boolean evaluate(WanConnection conn) {
            return conn.getStatus() == Connection.Status.Connected;
        }
    });
}

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