akka.util
Class ByteString

java.lang.Object
  akka.util.ByteString

All Implemented Interfaces:

scala.collection.generic.FilterMonadic<java.lang.Object,ByteString>, scala.collection.generic.GenericTraversableTemplate<java.lang.Object,scala.collection.immutable.IndexedSeq>, scala.collection.generic.HasNewBuilder<java.lang.Object,ByteString>, scala.collection.GenIterable<java.lang.Object>, scala.collection.GenIterableLike<java.lang.Object,ByteString>, scala.collection.GenSeq<java.lang.Object>, scala.collection.GenSeqLike<java.lang.Object,ByteString>, scala.collection.GenTraversable<java.lang.Object>, scala.collection.GenTraversableLike<java.lang.Object,ByteString>, scala.collection.GenTraversableOnce<java.lang.Object>, scala.collection.IndexedSeq<java.lang.Object>, scala.collection.IndexedSeqLike<java.lang.Object,ByteString>, scala.collection.IndexedSeqOptimized<java.lang.Object,ByteString>, scala.collection.Iterable<java.lang.Object>, scala.collection.IterableLike<java.lang.Object,ByteString>, scala.collection.Parallelizable<java.lang.Object,scala.collection.parallel.ParSeq<java.lang.Object>>, scala.collection.Seq<java.lang.Object>, scala.collection.SeqLike<java.lang.Object,ByteString>, scala.collection.Traversable<java.lang.Object>, scala.collection.TraversableLike<java.lang.Object,ByteString>, scala.collection.TraversableOnce<java.lang.Object>, scala.Equals, scala.Function1<java.lang.Object,java.lang.Object>, scala.Immutable, scala.PartialFunction<java.lang.Object,java.lang.Object>

Direct Known Subclasses:

ByteString.ByteString1, ByteString.ByteStrings, CompactByteString

public abstract class ByteString
extends java.lang.Object
implements scala.collection.immutable.IndexedSeq<java.lang.Object>, scala.collection.IndexedSeqOptimized<java.lang.Object,ByteString>

A rope-like immutable data structure containing bytes. The goal of this structure is to reduce copying of arrays when concatenating and slicing sequences of bytes, and also providing a thread safe way of working with bytes.

TODO: Add performance characteristics

Nested Class Summary

static class	ByteString.ByteString1 An unfragmented ByteString.
static class	ByteString.ByteString1C A compact (unsliced) and unfragmented ByteString, implementation of ByteString1C.
static class	ByteString.ByteStrings A ByteString with 2 or more fragments.

Nested classes/interfaces inherited from interface scala.collection.immutable.IndexedSeq

scala.collection.immutable.IndexedSeq.Impl<A>

Nested classes/interfaces inherited from interface scala.PartialFunction

scala.PartialFunction.AndThen<A,B,C>, scala.PartialFunction.Lifted<A,B>, scala.PartialFunction.OrElse<A,B>, scala.PartialFunction.Unlifted<A,B>

Nested classes/interfaces inherited from interface scala.collection.IndexedSeqLike

scala.collection.IndexedSeqLike.Elements

Nested classes/interfaces inherited from interface scala.collection.SeqLike

scala.collection.SeqLike.CombinationsItr, scala.collection.SeqLike.PermutationsItr

Nested classes/interfaces inherited from interface scala.collection.TraversableLike

scala.collection.TraversableLike.WithFilter

Nested classes/interfaces inherited from interface scala.collection.TraversableOnce

scala.collection.TraversableOnce.BufferedCanBuildFrom<A,Coll extends scala.collection.TraversableOnce<java.lang.Object>>, scala.collection.TraversableOnce.FlattenOps<A>, scala.collection.TraversableOnce.ForceImplicitAmbiguity, scala.collection.TraversableOnce.MonadOps<A>, scala.collection.TraversableOnce.OnceCanBuildFrom<A>

Constructor Summary

ByteString()

Method Summary

abstract byte	apply(int idx)
abstract java.nio.ByteBuffer	asByteBuffer() Returns a read-only ByteBuffer that directly wraps this ByteString if it is not fragmented.
static scala.collection.generic.CanBuildFrom<scala.collection.TraversableOnce<java.lang.Object>,java.lang.Object,ByteString>	canBuildFrom()
abstract CompactByteString	compact() Create a new ByteString with all contents compacted into a single, full byte array.
<B> void	copyToArray(java.lang.Object xs, int start, int len)
int	copyToBuffer(java.nio.ByteBuffer buffer) Copy as many bytes as possible to a ByteBuffer, starting from it's current position.
abstract java.lang.String	decodeString(java.lang.String charset) Decodes this ByteString using a charset to produce a String.
ByteString	drop(int n)
ByteString	dropRight(int n)
ByteString	dropWhile(scala.Function1<java.lang.Object,java.lang.Object> p)
static ByteString	empty()
<U> void	foreach(scala.Function1<java.lang.Object,U> f)
static ByteString	fromArray(byte[] array, int offset, int length) Creates a new ByteString by copying length bytes starting at offset from an Array.
byte	head()
<B> int	indexOf(B elem)
int	indexWhere(scala.Function1<java.lang.Object,java.lang.Object> p)
ByteString	init()
abstract boolean	isCompact() Check whether this ByteString is compact in memory.
ByteIterator	iterator()
byte	last()
ByteString	mapI(scala.Function1<java.lang.Object,java.lang.Object> f) map method that will automatically cast Int back into Byte.
protected ByteStringBuilder	newBuilder()
ByteString	slice(int from, int until)
scala.Tuple2<ByteString,ByteString>	span(scala.Function1<java.lang.Object,java.lang.Object> p)
scala.Tuple2<ByteString,ByteString>	splitAt(int n)
ByteString	tail()
ByteString	take(int n)
ByteString	takeRight(int n)
ByteString	takeWhile(scala.Function1<java.lang.Object,java.lang.Object> p)
<B> java.lang.Object	toArray(scala.reflect.ClassTag<B> arg0)
java.nio.ByteBuffer	toByteBuffer() Creates a new ByteBuffer with a copy of all bytes contained in this ByteString.
java.lang.String	utf8String() Decodes this ByteString as a UTF-8 encoded String.

Methods inherited from class java.lang.Object

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

Methods inherited from interface scala.collection.immutable.IndexedSeq

companion, seq, toIndexedSeq

Methods inherited from interface scala.collection.immutable.Seq

parCombiner, toSeq

Methods inherited from interface scala.PartialFunction

andThen, applyOrElse, isDefinedAt, lift, orElse, runWith

Methods inherited from interface scala.Function1

andThen$mcDD$sp, andThen$mcDF$sp, andThen$mcDI$sp, andThen$mcDJ$sp, andThen$mcFD$sp, andThen$mcFF$sp, andThen$mcFI$sp, andThen$mcFJ$sp, andThen$mcID$sp, andThen$mcIF$sp, andThen$mcII$sp, andThen$mcIJ$sp, andThen$mcJD$sp, andThen$mcJF$sp, andThen$mcJI$sp, andThen$mcJJ$sp, andThen$mcVD$sp, andThen$mcVF$sp, andThen$mcVI$sp, andThen$mcVJ$sp, andThen$mcZD$sp, andThen$mcZF$sp, andThen$mcZI$sp, andThen$mcZJ$sp, apply, apply$mcDD$sp, apply$mcDF$sp, apply$mcDI$sp, apply$mcDJ$sp, apply$mcFD$sp, apply$mcFF$sp, apply$mcFI$sp, apply$mcFJ$sp, apply$mcID$sp, apply$mcIF$sp, apply$mcII$sp, apply$mcIJ$sp, apply$mcJD$sp, apply$mcJF$sp, apply$mcJI$sp, apply$mcJJ$sp, apply$mcVD$sp, apply$mcVF$sp, apply$mcVI$sp, apply$mcVJ$sp, apply$mcZD$sp, apply$mcZF$sp, apply$mcZI$sp, apply$mcZJ$sp, compose, compose$mcDD$sp, compose$mcDF$sp, compose$mcDI$sp, compose$mcDJ$sp, compose$mcFD$sp, compose$mcFF$sp, compose$mcFI$sp, compose$mcFJ$sp, compose$mcID$sp, compose$mcIF$sp, compose$mcII$sp, compose$mcIJ$sp, compose$mcJD$sp, compose$mcJF$sp, compose$mcJI$sp, compose$mcJJ$sp, compose$mcVD$sp, compose$mcVF$sp, compose$mcVI$sp, compose$mcVJ$sp, compose$mcZD$sp, compose$mcZF$sp, compose$mcZI$sp, compose$mcZJ$sp, toString

Methods inherited from interface scala.collection.IndexedSeqLike

hashCode, thisCollection, toBuffer, toCollection

Methods inherited from interface scala.collection.SeqLike

$colon$plus, $plus$colon, combinations, contains, containsSlice, corresponds, diff, distinct, endsWith, indexOfSlice, indexOfSlice, indexWhere, indices, intersect, isEmpty, lastIndexOfSlice, lastIndexOfSlice, lastIndexWhere, length, lengthCompare, padTo, patch, permutations, reverse, reverseIterator, reverseMap, segmentLength, size, sortBy, sorted, sortWith, startsWith, toString, union, updated, view, view

Methods inherited from interface scala.collection.IterableLike

canEqual, exists, find, foldRight, forall, grouped, reduceRight, sameElements, sliding, sliding, toIterable, toIterator, toStream, zip, zipAll, zipWithIndex

Methods inherited from interface scala.collection.TraversableLike

$plus$plus, $plus$plus$colon, $plus$plus$colon, collect, filter, filterNot, flatMap, groupBy, hasDefiniteSize, headOption, inits, isTraversableAgain, lastOption, map, partition, repr, scan, scanLeft, scanRight, sliceWithKnownBound, sliceWithKnownDelta, stringPrefix, tails, to, toTraversable, withFilter

Methods inherited from interface scala.collection.TraversableOnce

$colon$bslash, $div$colon, addString, addString, addString, aggregate, collectFirst, copyToArray, copyToArray, copyToBuffer, count, fold, foldLeft, max, maxBy, min, minBy, mkString, mkString, mkString, nonEmpty, product, reduce, reduceLeft, reduceLeftOption, reduceOption, reduceRightOption, reversed, sum, toList, toMap, toSet, toVector

Methods inherited from interface scala.collection.GenSeqLike

equals, indexOf, isDefinedAt, lastIndexOf, lastIndexOf, lastIndexWhere, prefixLength, startsWith

Methods inherited from interface scala.collection.GenTraversableOnce

$div$colon$bslash

Methods inherited from interface scala.collection.Parallelizable

par

Methods inherited from interface scala.collection.IndexedSeqOptimized

endsWith, exists, find, foldLeft, foldRight, forall, indexWhere, isEmpty, lastIndexWhere, lengthCompare, reduceLeft, reduceRight, reverse, reverseIterator, sameElements, scala$collection$IndexedSeqOptimized$$super$endsWith, scala$collection$IndexedSeqOptimized$$super$head, scala$collection$IndexedSeqOptimized$$super$init, scala$collection$IndexedSeqOptimized$$super$last, scala$collection$IndexedSeqOptimized$$super$reduceLeft, scala$collection$IndexedSeqOptimized$$super$reduceRight, scala$collection$IndexedSeqOptimized$$super$sameElements, scala$collection$IndexedSeqOptimized$$super$tail, scala$collection$IndexedSeqOptimized$$super$zip, segmentLength, startsWith, zip, zipWithIndex

Constructor Detail

ByteString

public ByteString()

Method Detail

fromArray

public static ByteString fromArray(byte[] array,
                                   int offset,
                                   int length)

Creates a new ByteString by copying length bytes starting at offset from an Array.

empty

public static ByteString empty()

canBuildFrom

public static scala.collection.generic.CanBuildFrom<scala.collection.TraversableOnce<java.lang.Object>,java.lang.Object,ByteString> canBuildFrom()

apply

public abstract byte apply(int idx)

Specified by:

apply in interface scala.collection.GenSeqLike<java.lang.Object,ByteString>

Specified by:

apply in interface scala.collection.SeqLike<java.lang.Object,ByteString>

newBuilder

protected ByteStringBuilder newBuilder()

Specified by:

newBuilder in interface scala.collection.generic.GenericTraversableTemplate<java.lang.Object,scala.collection.immutable.IndexedSeq>

Specified by:

newBuilder in interface scala.collection.generic.HasNewBuilder<java.lang.Object,ByteString>

Specified by:

newBuilder in interface scala.collection.TraversableLike<java.lang.Object,ByteString>

iterator

public ByteIterator iterator()

Specified by:

iterator in interface scala.collection.GenIterableLike<java.lang.Object,ByteString>

Specified by:

iterator in interface scala.collection.IndexedSeqLike<java.lang.Object,ByteString>

Specified by:

iterator in interface scala.collection.IterableLike<java.lang.Object,ByteString>

head

public byte head()

Specified by:

head in interface scala.collection.generic.GenericTraversableTemplate<java.lang.Object,scala.collection.immutable.IndexedSeq>

Specified by:

head in interface scala.collection.GenTraversableLike<java.lang.Object,ByteString>

Specified by:

head in interface scala.collection.IndexedSeqOptimized<java.lang.Object,ByteString>

Specified by:

head in interface scala.collection.IterableLike<java.lang.Object,ByteString>

Specified by:

head in interface scala.collection.TraversableLike<java.lang.Object,ByteString>

tail

public ByteString tail()

Specified by:

tail in interface scala.collection.GenTraversableLike<java.lang.Object,ByteString>

Specified by:

tail in interface scala.collection.IndexedSeqOptimized<java.lang.Object,ByteString>

Specified by:

tail in interface scala.collection.TraversableLike<java.lang.Object,ByteString>

last

public byte last()

Specified by:

last in interface scala.collection.GenTraversableLike<java.lang.Object,ByteString>

Specified by:

last in interface scala.collection.IndexedSeqOptimized<java.lang.Object,ByteString>

Specified by:

last in interface scala.collection.TraversableLike<java.lang.Object,ByteString>

init

public ByteString init()

Specified by:

init in interface scala.collection.GenTraversableLike<java.lang.Object,ByteString>

Specified by:

init in interface scala.collection.IndexedSeqOptimized<java.lang.Object,ByteString>

Specified by:

init in interface scala.collection.TraversableLike<java.lang.Object,ByteString>

slice

public ByteString slice(int from,
                        int until)

Specified by:

slice in interface scala.collection.GenTraversableLike<java.lang.Object,ByteString>

Specified by:

slice in interface scala.collection.IndexedSeqOptimized<java.lang.Object,ByteString>

Specified by:

slice in interface scala.collection.IterableLike<java.lang.Object,ByteString>

Specified by:

slice in interface scala.collection.TraversableLike<java.lang.Object,ByteString>

take

public ByteString take(int n)

Specified by:

take in interface scala.collection.GenTraversableLike<java.lang.Object,ByteString>

Specified by:

take in interface scala.collection.IndexedSeqOptimized<java.lang.Object,ByteString>

Specified by:

take in interface scala.collection.IterableLike<java.lang.Object,ByteString>

Specified by:

take in interface scala.collection.TraversableLike<java.lang.Object,ByteString>

takeRight

public ByteString takeRight(int n)

Specified by:

takeRight in interface scala.collection.IndexedSeqOptimized<java.lang.Object,ByteString>

Specified by:

takeRight in interface scala.collection.IterableLike<java.lang.Object,ByteString>

drop

public ByteString drop(int n)

Specified by:

drop in interface scala.collection.GenTraversableLike<java.lang.Object,ByteString>

Specified by:

drop in interface scala.collection.IndexedSeqOptimized<java.lang.Object,ByteString>

Specified by:

drop in interface scala.collection.IterableLike<java.lang.Object,ByteString>

Specified by:

drop in interface scala.collection.TraversableLike<java.lang.Object,ByteString>

dropRight

public ByteString dropRight(int n)

Specified by:

dropRight in interface scala.collection.IndexedSeqOptimized<java.lang.Object,ByteString>

Specified by:

dropRight in interface scala.collection.IterableLike<java.lang.Object,ByteString>

takeWhile

public ByteString takeWhile(scala.Function1<java.lang.Object,java.lang.Object> p)

Specified by:

takeWhile in interface scala.collection.GenTraversableLike<java.lang.Object,ByteString>

Specified by:

takeWhile in interface scala.collection.IndexedSeqOptimized<java.lang.Object,ByteString>

Specified by:

takeWhile in interface scala.collection.IterableLike<java.lang.Object,ByteString>

Specified by:

takeWhile in interface scala.collection.TraversableLike<java.lang.Object,ByteString>

dropWhile

public ByteString dropWhile(scala.Function1<java.lang.Object,java.lang.Object> p)

Specified by:

dropWhile in interface scala.collection.GenTraversableLike<java.lang.Object,ByteString>

Specified by:

dropWhile in interface scala.collection.IndexedSeqOptimized<java.lang.Object,ByteString>

Specified by:

dropWhile in interface scala.collection.TraversableLike<java.lang.Object,ByteString>

span

public scala.Tuple2<ByteString,ByteString> span(scala.Function1<java.lang.Object,java.lang.Object> p)

Specified by:

span in interface scala.collection.GenTraversableLike<java.lang.Object,ByteString>

Specified by:

span in interface scala.collection.IndexedSeqOptimized<java.lang.Object,ByteString>

Specified by:

span in interface scala.collection.TraversableLike<java.lang.Object,ByteString>

splitAt

public scala.Tuple2<ByteString,ByteString> splitAt(int n)

Specified by:

splitAt in interface scala.collection.GenTraversableLike<java.lang.Object,ByteString>

Specified by:

splitAt in interface scala.collection.IndexedSeqOptimized<java.lang.Object,ByteString>

Specified by:

splitAt in interface scala.collection.TraversableLike<java.lang.Object,ByteString>

indexWhere

public int indexWhere(scala.Function1<java.lang.Object,java.lang.Object> p)

Specified by:

indexWhere in interface scala.collection.GenSeqLike<java.lang.Object,ByteString>

indexOf

public <B> int indexOf(B elem)

Specified by:

indexOf in interface scala.collection.GenSeqLike<java.lang.Object,ByteString>

toArray

public <B> java.lang.Object toArray(scala.reflect.ClassTag<B> arg0)

Specified by:

toArray in interface scala.collection.GenTraversableOnce<java.lang.Object>

Specified by:

toArray in interface scala.collection.TraversableOnce<java.lang.Object>

copyToArray

public <B> void copyToArray(java.lang.Object xs,
                            int start,
                            int len)

Specified by:

copyToArray in interface scala.collection.GenTraversableOnce<java.lang.Object>

Specified by:

copyToArray in interface scala.collection.IndexedSeqOptimized<java.lang.Object,ByteString>

Specified by:

copyToArray in interface scala.collection.IterableLike<java.lang.Object,ByteString>

Specified by:

copyToArray in interface scala.collection.TraversableLike<java.lang.Object,ByteString>

Specified by:

copyToArray in interface scala.collection.TraversableOnce<java.lang.Object>

foreach

public <U> void foreach(scala.Function1<java.lang.Object,U> f)

Specified by:

foreach in interface scala.collection.generic.FilterMonadic<java.lang.Object,ByteString>

Specified by:

foreach in interface scala.collection.generic.GenericTraversableTemplate<java.lang.Object,scala.collection.immutable.IndexedSeq>

Specified by:

foreach in interface scala.collection.GenTraversableLike<java.lang.Object,ByteString>

Specified by:

foreach in interface scala.collection.GenTraversableOnce<java.lang.Object>

Specified by:

foreach in interface scala.collection.IndexedSeqOptimized<java.lang.Object,ByteString>

Specified by:

foreach in interface scala.collection.IterableLike<java.lang.Object,ByteString>

Specified by:

foreach in interface scala.collection.TraversableLike<java.lang.Object,ByteString>

Specified by:

foreach in interface scala.collection.TraversableOnce<java.lang.Object>

copyToBuffer

public int copyToBuffer(java.nio.ByteBuffer buffer)

Copy as many bytes as possible to a ByteBuffer, starting from it's current position. This method will not overflow the buffer.

Parameters:

buffer - a ByteBuffer to copy bytes to

Returns:

the number of bytes actually copied

compact

public abstract CompactByteString compact()

Create a new ByteString with all contents compacted into a single, full byte array. If isCompact returns true, compact is an O(1) operation, but might return a different object with an optimized implementation.

isCompact

public abstract boolean isCompact()

Check whether this ByteString is compact in memory. If the ByteString is compact, it might, however, not be represented by an object that takes full advantage of that fact. Use compact to get such an object.

asByteBuffer

public abstract java.nio.ByteBuffer asByteBuffer()

Returns a read-only ByteBuffer that directly wraps this ByteString if it is not fragmented.

toByteBuffer

public java.nio.ByteBuffer toByteBuffer()

Creates a new ByteBuffer with a copy of all bytes contained in this ByteString.

utf8String

public final java.lang.String utf8String()

Decodes this ByteString as a UTF-8 encoded String.

decodeString

public abstract java.lang.String decodeString(java.lang.String charset)

Decodes this ByteString using a charset to produce a String.

mapI

public final ByteString mapI(scala.Function1<java.lang.Object,java.lang.Object> f)

map method that will automatically cast Int back into Byte.