group.rxcloud.capa.addons.serialzer.value.MapValues Maven / Gradle / Ivy
package group.rxcloud.capa.addons.serialzer.value;
import group.rxcloud.capa.addons.serialzer.delegate.Func1;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
public final class MapValues {
private MapValues() {
}
public static boolean isNullOrEmpty(Map map) {
return map == null || map.isEmpty();
}
public static Map from(Collection collection, Func1 keySelector) {
HashMap result = new HashMap<>();
for (V item : collection) {
result.put(keySelector.execute(item), item);
}
return result;
}
public static Map from(Collection collection, Func1 keySelector, Func1 valueSelector) {
HashMap result = new HashMap<>();
for (S item : collection) {
result.put(keySelector.execute(item), valueSelector.execute(item));
}
return result;
}
public static Map from(V[] array, Func1 keySelector) {
HashMap result = new HashMap<>();
for (V item : array) {
result.put(keySelector.execute(item), item);
}
return result;
}
public static Map from(S[] array, Func1 keySelector, Func1 valueSelector) {
HashMap result = new HashMap<>();
for (S item : array) {
result.put(keySelector.execute(item), valueSelector.execute(item));
}
return result;
}
}