// Copyright (c) 2003-2014, Jodd Team (jodd.org). All Rights Reserved.
package jodd.typeconverter.impl;
import jodd.typeconverter.TypeConverter;
import jodd.typeconverter.TypeConverterManagerBean;
import jodd.util.StringUtil;
import jodd.util.collection.LongArrayList;
import java.util.Collection;
import java.util.List;
/**
* Converts given object to <code>long[]</code>.
*/
public class LongArrayConverter implements TypeConverter<long[]> {
protected final TypeConverterManagerBean typeConverterManagerBean;
public LongArrayConverter(TypeConverterManagerBean typeConverterManagerBean) {
this.typeConverterManagerBean = typeConverterManagerBean;
}
public long[] convert(Object value) {
if (value == null) {
return null;
}
Class valueClass = value.getClass();
if (valueClass.isArray() == false) {
// source is not an array
return convertValueToArray(value);
}
// source is an array
return convertArrayToArray(value);
}
/**
* Converts type using type converter manager.
*/
protected long convertType(Object value) {
return typeConverterManagerBean.convertType(value, long.class).longValue();
}
/**
* Creates an array with single element.
*/
protected long[] convertToSingleElementArray(Object value) {
return new long[] {convertType(value)};
}
/**
* Converts non-array value to array. Detects various
* collection types and iterates them to make conversion
* and to create target array.
*/
protected long[] convertValueToArray(Object value) {
if (value instanceof List) {
List list = (List) value;
long[] target = new long[list.size()];
for (int i = 0; i < list.size(); i++) {
Object element = list.get(i);
target[i] = convertType(element);
}
return target;
}
if (value instanceof Collection) {
Collection collection = (Collection) value;
long[] target = new long[collection.size()];
int i = 0;
for (Object element : collection) {
target[i] = convertType(element);
i++;
}
return target;
}
if (value instanceof Iterable) {
Iterable iterable = (Iterable) value;
LongArrayList longArrayList = new LongArrayList();
for (Object element : iterable) {
long convertedValue = convertType(element);
longArrayList.add(convertedValue);
}
return longArrayList.toArray();
}
if (value instanceof CharSequence) {
String[] strings = StringUtil.splitc(value.toString(), ArrayConverter.NUMBER_DELIMITERS);
return convertArrayToArray(strings);
}
// everything else:
return convertToSingleElementArray(value);
}
/**
* Converts array value to array.
*/
protected long[] convertArrayToArray(Object value) {
Class valueComponentType = value.getClass().getComponentType();
if (valueComponentType == long.class) {
// equal types, no conversion needed
return (long[]) value;
}
long[] result;
if (valueComponentType.isPrimitive()) {
// convert primitive array to target array
result = convertPrimitiveArrayToArray(value, valueComponentType);
} else {
// convert object array to target array
Object[] array = (Object[]) value;
result = new long[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = convertType(array[i]);
}
}
return result;
}
/**
* Converts primitive array to target array.
*/
protected long[] convertPrimitiveArrayToArray(Object value, Class primitiveComponentType) {
long[] result = null;
if (primitiveComponentType == long[].class) {
return (long[]) value;
}
if (primitiveComponentType == int.class) {
int[] array = (int[]) value;
result = new long[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = array[i];
}
}
else if (primitiveComponentType == float.class) {
float[] array = (float[]) value;
result = new long[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = (long) array[i];
}
}
else if (primitiveComponentType == double.class) {
double[] array = (double[]) value;
result = new long[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = (long) array[i];
}
}
else if (primitiveComponentType == short.class) {
short[] array = (short[]) value;
result = new long[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = array[i];
}
}
else if (primitiveComponentType == byte.class) {
byte[] array = (byte[]) value;
result = new long[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = array[i];
}
}
else if (primitiveComponentType == char.class) {
char[] array = (char[]) value;
result = new long[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = array[i];
}
}
else if (primitiveComponentType == boolean.class) {
boolean[] array = (boolean[]) value;
result = new long[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = array[i] ? 1 : 0;
}
}
return result;
}
}