org.polkadot.types.codec

Class U8a

java.lang.Object

org.polkadot.types.codec.U8a

All Implemented Interfaces:

Codec

Direct Known Subclasses:

Bytes, ExtrinsicEra, U8aFixed

public class U8a
extends java.lang.Object
implements Codec

A basic wrapper around Uint8Array, with no frills and no fuss. It does differ from other implementations wher it will consume the full Uint8Array as passed to it. As such it is meant to be subclassed where the wrapper takes care of the actual lengths instead of used directly.

Field Summary

Fields

Modifier and Type	Field and Description
byte[]	raw

Constructor Summary

Constructors

Constructor and Description
U8a(java.lang.Object value)

Method Summary

Modifier and Type	Method and Description
boolean	eq(java.lang.Object other) Compares the value of the input to see if there is a match
int	getEncodedLength() The length of the value when encoded as a Uint8Array
boolean	isEmpty() Returns true if the type wraps an empty/default all-0 value
int	length() The length of the value
U8a	subarray(int begin, int end)
java.lang.String	toHex() Returns a hex string representation of the value
java.lang.Object	toJson() Converts the Object to JSON, typically used for RPC transfers
java.lang.String	toString() Returns the string representation of the value
byte[]	toU8a(boolean isBare)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.polkadot.types.Codec

getConstructorCodec, toU8a

Field Detail

raw

public byte[] raw

Constructor Detail

U8a

public U8a(java.lang.Object value)

Method Detail

getEncodedLength

public int getEncodedLength()

The length of the value when encoded as a Uint8Array

Specified by:

getEncodedLength in interface Codec

isEmpty

public boolean isEmpty()

Returns true if the type wraps an empty/default all-0 value

Specified by:

isEmpty in interface Codec

length

public int length()

The length of the value

eq

public boolean eq(java.lang.Object other)

Compares the value of the input to see if there is a match

Specified by:

eq in interface Codec

subarray

public U8a subarray(int begin,
                    int end)

Parameters:

begin - The position to start at

end - The position to end at Create a new subarray from the actual buffer. This is needed for compat reasons since a new Uint8Array gets returned here

toHex

public java.lang.String toHex()

Returns a hex string representation of the value

Specified by:

toHex in interface Codec

toJson

public java.lang.Object toJson()

Converts the Object to JSON, typically used for RPC transfers

Specified by:

toJson in interface Codec

toString

public java.lang.String toString()

Returns the string representation of the value

Overrides:

toString in class java.lang.Object

toU8a

public byte[] toU8a(boolean isBare)

Specified by:

toU8a in interface Codec

Parameters:

isBare - true when the value has none of the type-specific prefixes (internal) Encodes the value as a Uint8Array as per the parity-codec specifications