com.mysema.util.ArrayUtils Maven / Gradle / Ivy
/*
* Copyright 2015, The Querydsl Team (http://www.querydsl.com/team)
*
* 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.mysema.util;
import java.lang.reflect.Array;
/**
* ArrayUtils provides array related utility functionality
*
* @author tiwe
*
*/
public final class ArrayUtils {
public static Object[] combine(int size, Object[]... arrays) {
int offset = 0;
Object[] target = new Object[size];
for (Object[] arr : arrays) {
System.arraycopy(arr, 0, target, offset, arr.length);
offset += arr.length;
}
return target;
}
// copied and modified from commons-lang-2.3
// originally licensed under ASL 2.0
public static Object[] subarray(Object[] array, int startIndexInclusive, int endIndexExclusive) {
int newSize = endIndexExclusive - startIndexInclusive;
Class> type = array.getClass().getComponentType();
if (newSize <= 0) {
return (Object[]) Array.newInstance(type, 0);
}
Object[] subarray = (Object[]) Array.newInstance(type, newSize);
System.arraycopy(array, startIndexInclusive, subarray, 0, newSize);
return subarray;
}
public static boolean isEmpty(Object[] array) {
return array == null || array.length == 0;
}
private ArrayUtils() {}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy