org.pepsoft.util

Class ObjectUtils

java.lang.Object

org.pepsoft.util.ObjectUtils

public final class ObjectUtils
extends Object

Method Summary

Modifier and Type	Method and Description
static byte[][]	clone(byte[][] array)
static DataBuffer	clone(DataBuffer dataBuffer)
static DataBufferByte	clone(DataBufferByte dataBuffer)
static DataBufferDouble	clone(DataBufferDouble dataBuffer)
static DataBufferFloat	clone(DataBufferFloat dataBuffer)
static DataBufferInt	clone(DataBufferInt dataBuffer)
static DataBufferShort	clone(DataBufferShort dataBuffer)
static DataBufferUShort	clone(DataBufferUShort dataBuffer)
static double[][]	clone(double[][] array)
static float[][]	clone(float[][] array)
static int[][]	clone(int[][] array)
static short[][]	clone(short[][] array)
static <T> T	coalesce(T firstValue, Supplier<T>... subsequentValueSuppliers) Analog of the SQL COALESCE function: returns the first non-null value.
static <T> T	copyObject(T object) Make a deep copy of an object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

copyObject

public static <T> T copyObject(T object)

Make a deep copy of an object. Only a restricted set of types is supported.

Note that this method also treats Point as immutable, even though technically it is not!

Type Parameters:

T - The type of the object.

Parameters:

object - The object to copy.

Returns:

A deep copy of the object.

Throws:

OutOfMemoryError - If there is not enough memory to copy the object.

clone

public static DataBuffer clone(DataBuffer dataBuffer)

clone

public static DataBufferByte clone(DataBufferByte dataBuffer)

clone

public static DataBufferDouble clone(DataBufferDouble dataBuffer)

clone

public static DataBufferFloat clone(DataBufferFloat dataBuffer)

clone

public static DataBufferInt clone(DataBufferInt dataBuffer)

clone

public static DataBufferShort clone(DataBufferShort dataBuffer)

clone

public static DataBufferUShort clone(DataBufferUShort dataBuffer)

clone

public static byte[][] clone(byte[][] array)

clone

public static double[][] clone(double[][] array)

clone

public static float[][] clone(float[][] array)

clone

public static int[][] clone(int[][] array)

clone

public static short[][] clone(short[][] array)

coalesce

@SafeVarargs
public static <T> T coalesce(T firstValue,
                                           Supplier<T>... subsequentValueSuppliers)

Analog of the SQL COALESCE function: returns the first non-null value. An additional property is that all but the first value are supplied by Suppliers, so that the value need not actually be created if it is not needed.

Type Parameters:

T - The type of the value.

Parameters:

firstValue - The first value.

subsequentValueSuppliers - One or more suppliers of subsequent values. If firstValue is null then at least one of these MUST return a non null value, or a NullPointerException will be thrown.

Returns:

The first non null value.

Throws:

NullPointerException - If firstValue is null and all subsequentValueSuppliers return null.