/*
* Copyright 2014 NAVER Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.navercorp.pinpoint.rpc.util;
import com.navercorp.pinpoint.common.util.CollectionUtils;
import java.util.Collection;
import java.util.List;
/**
* @author Taejin Koo
*/
public final class ListUtils {
private ListUtils() {
}
/**
* @deprecated Since 1.6.1. Use {@link CollectionUtils#isEmpty(Collection)}
*/
@Deprecated
public static boolean isEmpty(List list) {
return CollectionUtils.isEmpty(list);
}
public static <V> boolean addIfValueNotNull(List<V> list, V value) {
if (value == null) {
return false;
}
return list.add(value);
}
public static <V> boolean addAllIfAllValuesNotNull(List<V> list, V[] values) {
if (values == null) {
return false;
}
for (V value : values) {
if (value == null) {
return false;
}
}
for (V value : values) {
list.add(value);
}
return true;
}
public static <V> void addAllExceptNullValue(List<V> list, V[] values) {
if (values == null) {
return;
}
for (V value : values) {
addIfValueNotNull(list, value);
}
}
public static <V> V getFirst(List<V> list) {
return getFirst(list, null);
}
public static <V> V getFirst(List<V> list, V defaultValue) {
if (list == null) {
return defaultValue;
}
int size = list.size();
if (size > 0) {
return list.get(0);
} else {
return defaultValue;
}
}
public static <V> boolean isFirst(List<V> list, V object) {
V first = getFirst(list);
if (first == null) {
return object == null;
}
return first.equals(object);
}
public static <V> V get(List<V> list, int index, V defaultValue) {
try {
return list.get(index);
} catch (Exception ignore) {
}
return defaultValue;
}
public static <V> V getLast(List<V> list) {
return getLast(list, null);
}
public static <V> V getLast(List<V> list, V defaultValue) {
if (list == null) {
return defaultValue;
}
int size = list.size();
if (size > 0) {
return list.get(size - 1);
} else {
return defaultValue;
}
}
public static <V> boolean isLast(List<V> list, V object) {
V last = getLast(list);
if (last == null) {
return object == null;
}
return last.equals(object);
}
}