/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.isis.core.commons.lang;
import java.lang.reflect.Array;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import com.google.common.collect.Lists;
import org.apache.isis.core.commons.exceptions.IsisException;
public final class ArrayExtensions {
private ArrayExtensions() {
}
static Object[] convertPrimitiveToObjectArray(final Object extendee, final Class<?> arrayType) {
Object[] convertedArray;
try {
final Class<?> wrapperClass = ClassExtensions.asWrapped(arrayType);
final Constructor<?> constructor = wrapperClass.getConstructor(new Class[] { String.class });
final int len = Array.getLength(extendee);
convertedArray = (Object[]) Array.newInstance(wrapperClass, len);
for (int i = 0; i < len; i++) {
convertedArray[i] = constructor.newInstance(new Object[] { Array.get(extendee, i).toString() });
}
} catch (final NoSuchMethodException e) {
throw new IsisException(e);
} catch (final ArrayIndexOutOfBoundsException e) {
throw new IsisException(e);
} catch (final IllegalArgumentException e) {
throw new IsisException(e);
} catch (final InstantiationException e) {
throw new IsisException(e);
} catch (final IllegalAccessException e) {
throw new IsisException(e);
} catch (final InvocationTargetException e) {
throw new IsisException(e);
}
return convertedArray;
}
public static Object[] asCharToCharacterArray(final Object extendee) {
final char[] original = (char[]) extendee;
final int len = original.length;
final Character[] converted = new Character[len];
for (int i = 0; i < converted.length; i++) {
converted[i] = Character.valueOf(original[i]);
}
return converted;
}
public static <T> T[] combine(final T[]... arrays) {
final List<T> combinedList = Lists.newArrayList();
for (final T[] array : arrays) {
Collections.addAll(combinedList, array);
}
return combinedList.toArray(arrays[0]); // using 1st element of arrays to specify the type
}
public static <T> T[] appendT(final T[] array, final T obj) {
final List<T> combinedList = Lists.newArrayList();
combinedList.add(obj);
Collections.addAll(combinedList, array);
return combinedList.toArray(array); // using array to specify the type
}
public static String[] append(final String[] extendee, final String... moreArgs) {
final List<String> argList = Lists.newArrayList();
argList.addAll(Arrays.asList(extendee));
argList.addAll(Arrays.asList(moreArgs));
return argList.toArray(new String[] {});
}
public static List<String> mergeToList(final String[] extendee, final String[] array2) {
final List<String> prefixes = new ArrayList<String>();
ArrayExtensions.addNoDuplicates(extendee, prefixes);
ArrayExtensions.addNoDuplicates(array2, prefixes);
return prefixes;
}
static void addNoDuplicates(final String[] array, final List<String> list) {
for (int i = 0; i < array.length; i++) {
if (!list.contains(array[i])) {
list.add(array[i]);
}
}
}
public static List<Object> asListFlattened(final Object[] objectArray) {
final List<Object> list = new ArrayList<Object>();
for (final Object element : objectArray) {
if (Collection.class.isAssignableFrom(element.getClass())) {
@SuppressWarnings("rawtypes")
final Collection collection = (Collection) element;
list.addAll(asListFlattened(collection.toArray()));
} else {
list.add(element);
}
}
return list;
}
public static <T> T coalesce(final T... objects) {
for (final T object : objects) {
if (object != null) {
return object;
}
}
return null;
}
public static String commaSeparatedClassNames(final List<Object> objects) {
final StringBuilder buf = new StringBuilder();
int i = 0;
for (final Object object : objects) {
if (i++ > 0) {
buf.append(',');
}
buf.append(object.getClass().getName());
}
return buf.toString();
}
public static String asSemicolonDelimitedStr(final List<String> list) {
final StringBuffer buf = new StringBuffer();
for (final String message : list) {
if (list.size() > 1) {
buf.append("; ");
}
buf.append(message);
}
return buf.toString();
}
public static List<Class<?>> toClasses(final List<Object> objectList) {
final List<Class<?>> classList = new ArrayList<Class<?>>();
for (final Object service : objectList) {
classList.add(service.getClass());
}
return classList;
}
}