jadex.commons.transformation.binaryserializer

Class DecodingContext

java.lang.Object

jadex.commons.transformation.binaryserializer.AbstractDecodingContext

jadex.commons.transformation.binaryserializer.DecodingContext

All Implemented Interfaces:

IDecodingContext

public class DecodingContext
extends AbstractDecodingContext

Context for decoding a binary-encoded object.

Field Summary

Fields

Modifier and Type	Field and Description
protected byte	bitfield The current bitfield (used for boolean values).
protected byte	bitpos The current bit position within the bitfield
protected java.util.List<java.lang.String>	classnamepool The class name pool.
protected byte[]	content The content being decoded.
protected int	offset The current offset
protected java.util.List<java.lang.String>	pkgpool The package fragment pool.
protected java.util.List<java.lang.String>	stringpool The String pool.

Fields inherited from class jadex.commons.transformation.binaryserializer.AbstractDecodingContext

classloader, currentclassname, decoderhandlers, errorreporter, knownobjects, lastobject, postprocessors, usercontext

Constructor Summary

Constructors

Constructor and Description
DecodingContext(byte[] content, java.util.List<IDecoderHandler> decoderhandlers, java.util.List<IDecoderHandler> postprocessors, java.lang.Object usercontext, java.lang.ClassLoader classloader, IErrorReporter errorreporter) Creates a new DecodingContext.
DecodingContext(byte[] content, java.util.List<IDecoderHandler> decoderhandlers, java.util.List<IDecoderHandler> postprocessors, java.lang.Object usercontext, java.lang.ClassLoader classloader, IErrorReporter errorreporter, int offset) Creates a new DecodingContext with specific offset.

Method Summary

Modifier and Type	Method and Description
java.nio.ByteBuffer	getByteBuffer(int length) Gets a ByteBuffer window of the content.
byte[]	getContent() Gets the content being decoded.
int	getOffset() Gets the current offset.
void	incOffset(int val) Increases the offset.
byte[]	read(byte[] array) Reads a number of bytes from the buffer and fills the array.
byte[]	read(int count) Reads a number of bytes from the buffer.
boolean	readBoolean() Reads a boolean value from the buffer.
byte	readByte() Reads a byte from the buffer.
java.lang.String	readClassname() Helper method for decoding a class name.
long	readSignedVarInt() Helper method for decoding a signed variable-sized integer (VarInt).
java.lang.String	readString() Helper method for decoding a string.
long	readVarInt() Helper method for decoding a variable-sized integer (VarInt).

Methods inherited from class jadex.commons.transformation.binaryserializer.AbstractDecodingContext

getClassloader, getCurrentClassName, getDecoderHandlers, getErrorReporter, getKnownObjects, getLastObject, getPostProcessors, getUserContext, setCurrentClassName, setLastObject

Methods inherited from class java.lang.Object

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

Field Detail

content

protected byte[] content

The content being decoded.

offset

protected int offset

The current offset

stringpool

protected java.util.List<java.lang.String> stringpool

The String pool.

classnamepool

protected java.util.List<java.lang.String> classnamepool

The class name pool.

pkgpool

protected java.util.List<java.lang.String> pkgpool

The package fragment pool.

bitfield

protected byte bitfield

The current bitfield (used for boolean values).

bitpos

protected byte bitpos

The current bit position within the bitfield

Constructor Detail

DecodingContext

public DecodingContext(byte[] content,
                       java.util.List<IDecoderHandler> decoderhandlers,
                       java.util.List<IDecoderHandler> postprocessors,
                       java.lang.Object usercontext,
                       java.lang.ClassLoader classloader,
                       IErrorReporter errorreporter)

Creates a new DecodingContext.

Parameters:

classloader - The classloader.

content - The content being decoded.

DecodingContext

public DecodingContext(byte[] content,
                       java.util.List<IDecoderHandler> decoderhandlers,
                       java.util.List<IDecoderHandler> postprocessors,
                       java.lang.Object usercontext,
                       java.lang.ClassLoader classloader,
                       IErrorReporter errorreporter,
                       int offset)

Creates a new DecodingContext with specific offset.

Parameters:

content - The content being decoded.

offset - The offset.

Method Detail

incOffset

public void incOffset(int val)

Increases the offset.

Parameters:

val - The value to increase the offset.

getOffset

public int getOffset()

Gets the current offset.

Parameters:

offset - The offset.

getContent

public byte[] getContent()

Gets the content being decoded.

Returns:

The content.

readByte

public byte readByte()

Reads a byte from the buffer.

Returns:

A byte.

read

public byte[] read(int count)

Reads a number of bytes from the buffer.

Parameters:

count - Number of bytes.

Returns:

Byte array with the bytes.

read

public byte[] read(byte[] array)

Reads a number of bytes from the buffer and fills the array.

Parameters:

array - The byte array.

Returns:

The byte array for convenience.

readBoolean

public boolean readBoolean()

Reads a boolean value from the buffer.

Returns:

Boolean value.

getByteBuffer

public java.nio.ByteBuffer getByteBuffer(int length)

Gets a ByteBuffer window of the content.

Parameters:

length - The length in bytes.

Returns:

The ByteBuffer.

readClassname

public java.lang.String readClassname()

Helper method for decoding a class name.

Returns:

String encoded at the current position.

readString

public java.lang.String readString()

Helper method for decoding a string.

Returns:

String encoded at the current position.

readVarInt

public long readVarInt()

Helper method for decoding a variable-sized integer (VarInt).

Returns:

The decoded value.

readSignedVarInt

public long readSignedVarInt()

Helper method for decoding a signed variable-sized integer (VarInt).

Returns:

The decoded value.