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package com.box.sdk.internal.utils;
import java.util.ArrayList;
import java.util.Collection;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
/**
* {@link Collection} related utlities.
*/
public class CollectionUtils {
/**
* Only static members.
*/
protected CollectionUtils() {
}
/**
* Re-maps a provided collection.
*
* @param type of result
* @param type of source
* @param source for mapping
* @param mapper element mapper
* @return mapped source
*/
public static List map(Collection source,
Mapper mapper) {
List result = new LinkedList();
for (T_Source element : source) {
result.add(mapper.map(element));
}
return result;
}
/**
* Creates list from iterable.
*
* @param iterable Iterable that will be used to create list.
* @param Collection element
* @return List with all items from iterable. Elements are in the same order as iterable is returning them.
*/
public static List createListFrom(Iterable iterable) {
List result = new ArrayList();
for (T element : iterable) {
result.add(element);
}
return result;
}
public static String mapToString(Map map) {
return map.keySet().stream()
.map(k -> k + "=" + map.get(k))
.collect(Collectors.joining(",\n", "{\n", "\n}"));
}
/**
* Contract for {@link Collection}-s mapping.
*
* @param type of result
* @param type of source
*/
public interface Mapper {
/**
* Maps a provided value.
*
* @param input for mapping
* @return mapped value
*/
T_Result map(T_Source input);
}
}