Package com.metsci.glimpse.dnc.util

Class DncMiscUtils

java.lang.Object

com.metsci.glimpse.dnc.util.DncMiscUtils

public class DncMiscUtils
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static long	GiB
static long	MiB

Constructor Summary

Constructors

Constructor	Description
DncMiscUtils()

Method Summary

Modifier and Type	Method	Description
static <F,T> Function<F,T>	constFunc(T value)
static MappedByteBuffer	createAndMemmapReadWrite(File file, int newFileSize)
static File	createNewDir(File dir)
static File	createNewDir(File parentDir, String childPath)
static File	createNewDir(String dirPath)
static BufferedReader	createReader(URL url)
static File	filenameToLowercase(File file)	Lowercases the last segment of the specified path.
static File	filenameToUppercase(File file)	Uppercases the last segment of the specified path.
static <T> it.unimi.dsi.fastutil.objects.Object2IntMap<T>	invertIdsMap(it.unimi.dsi.fastutil.ints.Int2ObjectMap<T> idsMap)
static <T> it.unimi.dsi.fastutil.objects.Object2IntMap<T>	invertList(List<T> list)
static boolean	isFilenameCaseSensitive(File file)
static <T> T	last(List<T> list)
static MappedByteBuffer	memmapReadOnly(File file)
static MappedByteBuffer	memmapReadWrite(File file)
static Function<String,Object>	newAttrsFunc(Map<String,Object> map)
static Map<String,Object>	newAttrsMap(Object... keysAndValues)
static ThreadFactory	newThreadFactory(String namePrefix, boolean isDaemon)
static ExecutorService	newWorkerDaemon(String threadNamePrefix)	Creates an executor with a single daemon thread and an unbounded job queue.
static int	nextPowerOfTwo(int x)	Throws IllegalArgumentException if x is negative
static long	packBytesIntoLong(byte[] bytes)
static void	poslim(Buffer buf, int first, int count, int size)
static it.unimi.dsi.fastutil.ints.Int2ObjectMap<String>	readIdsMapFile(File file, Charset charset)
static String	readText(URL url, Charset charset)
static String	repchar(char c, int n)
static <T> T	requireResult(Future<? extends T> future)
static <V> List<V>	sorted(Collection<V> values, Comparator<? super V> comparator)
static Thread	startThread(String name, boolean daemon, Runnable runnable)
static int	sum(int... xs)
static <V> V	takeNewValue(BlockingQueue<V> queue, V oldValue)
static long	timeSince_MILLIS(long start_PMILLIS)
static <T> ArrayList<T>	toArrayList(Iterable<? extends T> iterable)
static byte[]	unpackLongIntoBytes(long packed)
static void	writeIdsMapFile(it.unimi.dsi.fastutil.objects.Object2IntMap<String> idsMap, File file, Charset charset)

Methods inherited from class java.lang.Object

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

Field Detail

MiB

public static final long MiB

See Also:

Constant Field Values

GiB

public static final long GiB

See Also:

Constant Field Values

Constructor Detail

DncMiscUtils

public DncMiscUtils()

Method Detail

requireResult

public static <T> T requireResult(Future<? extends T> future)

startThread

public static Thread startThread(String name,
                                 boolean daemon,
                                 Runnable runnable)

takeNewValue

public static <V> V takeNewValue(BlockingQueue<V> queue,
                                 V oldValue)
                          throws InterruptedException

Throws:

InterruptedException

newWorkerDaemon

public static ExecutorService newWorkerDaemon(String threadNamePrefix)

Creates an executor with a single daemon thread and an unbounded job queue. Jobs submitted after the executor has been shutdown will be silently dropped.

newThreadFactory

public static ThreadFactory newThreadFactory(String namePrefix,
                                             boolean isDaemon)

nextPowerOfTwo

public static int nextPowerOfTwo(int x)

Throws IllegalArgumentException if x is negative

sum

public static int sum(int... xs)

timeSince_MILLIS

public static long timeSince_MILLIS(long start_PMILLIS)

sorted

public static <V> List<V> sorted(Collection<V> values,
                                 Comparator<? super V> comparator)

toArrayList

public static <T> ArrayList<T> toArrayList(Iterable<? extends T> iterable)

last

public static <T> T last(List<T> list)

isFilenameCaseSensitive

public static boolean isFilenameCaseSensitive(File file)

filenameToLowercase

public static File filenameToLowercase(File file)

Lowercases the last segment of the specified path.

filenameToUppercase

public static File filenameToUppercase(File file)

Uppercases the last segment of the specified path.

memmapReadOnly

public static MappedByteBuffer memmapReadOnly(File file)
                                       throws IOException

Throws:

IOException

memmapReadWrite

public static MappedByteBuffer memmapReadWrite(File file)
                                        throws IOException

Throws:

IOException

createAndMemmapReadWrite

public static MappedByteBuffer createAndMemmapReadWrite(File file,
                                                        int newFileSize)
                                                 throws IOException

Throws:

IOException

poslim

public static void poslim(Buffer buf,
                          int first,
                          int count,
                          int size)

packBytesIntoLong

public static long packBytesIntoLong(byte[] bytes)

unpackLongIntoBytes

public static byte[] unpackLongIntoBytes(long packed)

repchar

public static String repchar(char c,
                             int n)

writeIdsMapFile

public static void writeIdsMapFile(it.unimi.dsi.fastutil.objects.Object2IntMap<String> idsMap,
                                   File file,
                                   Charset charset)
                            throws IOException

Throws:

IOException

readIdsMapFile

public static it.unimi.dsi.fastutil.ints.Int2ObjectMap<String> readIdsMapFile(File file,
                                                                              Charset charset)
                                                                       throws IOException

Throws:

IOException

invertIdsMap

public static <T> it.unimi.dsi.fastutil.objects.Object2IntMap<T> invertIdsMap(it.unimi.dsi.fastutil.ints.Int2ObjectMap<T> idsMap)

invertList

public static <T> it.unimi.dsi.fastutil.objects.Object2IntMap<T> invertList(List<T> list)

constFunc

public static <F,T> Function<F,T> constFunc(T value)

newAttrsMap

public static Map<String,Object> newAttrsMap(Object... keysAndValues)

newAttrsFunc

public static Function<String,Object> newAttrsFunc(Map<String,Object> map)

createNewDir

public static File createNewDir(File parentDir,
                                String childPath)

createNewDir

public static File createNewDir(String dirPath)

createNewDir

public static File createNewDir(File dir)

readText

public static String readText(URL url,
                              Charset charset)
                       throws IOException

Throws:

IOException

createReader

public static BufferedReader createReader(URL url)
                                   throws IOException

Throws:

IOException