com.caucho.hessian.io
Class HessianInput

java.lang.Object
  com.caucho.hessian.io.AbstractHessianInput
      com.caucho.hessian.io.HessianInput

public class HessianInput
extends AbstractHessianInput

Input stream for Hessian requests.

HessianInput is unbuffered, so any client needs to provide its own buffering.

 InputStream is = ...; // from http connection
 HessianInput in = new HessianInput(is);
 String value;

 in.startReply();         // read reply header
 value = in.readString(); // read string value
 in.completeReply();      // read reply footer
 

Field Summary

protected int	_peek
protected ArrayList	_refs
protected SerializerFactory	_serializerFactory

Constructor Summary

HessianInput()
Creates an uninitialized Hessian input stream.

HessianInput(InputStream is)
Creates a new Hessian input stream, initialized with an underlying input stream.

Method Summary

int	addRef(Object ref) Adds a list/map reference.
void	close()
protected String	codeName(int ch)
void	completeCall() Completes reading the call A successful completion will have a single value: z
void	completeReply() Completes reading the call A successful completion will have a single value: z
void	completeValueReply() Completes reading the call A successful completion will have a single value: z
protected IOException	error(String message)
protected IOException	expect(String expect, int ch)
String	getMethod() Returns the calls method
Reader	getReader() Starts reading a string.
Throwable	getReplyFault() Returns any reply fault.
SerializerFactory	getSerializerFactory() Gets the serializer factory.
void	init(InputStream is) Initialize the hessian stream with the underlying input stream.
boolean	isEnd() Returns true if this is the end of a list or a map.
boolean	readBoolean() Reads a boolean T F
int	readByte() Reads a byte from the stream.
byte[]	readBytes() Reads a byte array B b16 b8 data value
int	readBytes(byte[] buffer, int offset, int length) Reads a byte array from the stream.
int	readCall() Starts reading the call c major minor
int	readChar() Reads a byte from the stream.
double	readDouble() Reads a double D b64 b56 b48 b40 b32 b24 b16 b8
void	readEnd() Reads the end byte.
float	readFloat() Reads a float D b64 b56 b48 b40 b32 b24 b16 b8
String	readHeader() Reads a header, returning null if there are no headers.
InputStream	readInputStream() Reads bytes based on an input stream.
int	readInt() Reads an integer I b32 b24 b16 b8
int	readLength() Parses the length for an array l b32 b24 b16 b8
void	readListEnd() Reads the end byte.
int	readListStart() Reads the start of a list.
long	readLong() Reads a long L b64 b56 b48 b40 b32 b24 b16 b8
void	readMapEnd() Reads the end byte.
int	readMapStart() Reads the start of a list.
String	readMethod() Starts reading the call A successful completion will have a single value: m b16 b8 method
Node	readNode() Reads an XML node.
void	readNull() Reads a null N
Object	readObject() Reads an arbitrary object from the input stream when the type is unknown.
Object	readObject(Class cl) Reads an object from the input stream with an expected type.
Object	readRef() Reads a reference.
Object	readRemote() Reads a remote object.
Object	readReply(Class expectedClass) Reads a reply as an object.
short	readShort() Reads a short I b32 b24 b16 b8
String	readString() Reads a string S b16 b8 string value
int	readString(char[] buffer, int offset, int length) Reads a byte array from the stream.
String	readType() Parses a type from the stream.
long	readUTCDate() Reads a date.
void	resetReferences() Resets the references for streaming.
Object	resolveRemote(String type, String url) Resolves a remote object.
void	setRef(int i, Object ref) Adds a list/map reference.
void	setSerializerFactory(SerializerFactory factory) Sets the serializer factory.
void	skipOptionalCall() For backward compatibility with HessianSkeleton
void	startCall() Starts reading the call, including the headers.
void	startReply() Starts reading the reply A successful completion will have a single value: r
void	startReplyBody() Starts reading the body of the reply, i.e. after the 'r' has been parsed.

Methods inherited from class com.caucho.hessian.io.AbstractHessianInput

getRemoteResolver, readMethodArgLength, readToOutputStream, setRemoteResolver

Methods inherited from class java.lang.Object

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

Field Detail

_serializerFactory

protected SerializerFactory _serializerFactory

_refs

protected ArrayList _refs

_peek

protected int _peek

Constructor Detail

HessianInput

public HessianInput()

Creates an uninitialized Hessian input stream.

HessianInput

public HessianInput(InputStream is)

Creates a new Hessian input stream, initialized with an underlying input stream.

Parameters:

is - the underlying input stream.

Method Detail

setSerializerFactory

public void setSerializerFactory(SerializerFactory factory)

Sets the serializer factory.

Overrides:

setSerializerFactory in class AbstractHessianInput

getSerializerFactory

public SerializerFactory getSerializerFactory()

Gets the serializer factory.

init

public void init(InputStream is)

Initialize the hessian stream with the underlying input stream.

Overrides:

init in class AbstractHessianInput

getMethod

public String getMethod()

Returns the calls method

Specified by:

getMethod in class AbstractHessianInput

getReplyFault

public Throwable getReplyFault()

Returns any reply fault.

readCall

public int readCall()
             throws IOException

Starts reading the call

 c major minor
 

Specified by:

readCall in class AbstractHessianInput

Throws:

IOException

skipOptionalCall

public void skipOptionalCall()
                      throws IOException

For backward compatibility with HessianSkeleton

Overrides:

skipOptionalCall in class AbstractHessianInput

Throws:

IOException

readMethod

public String readMethod()
                  throws IOException

Starts reading the call

A successful completion will have a single value:

 m b16 b8 method
 

Specified by:

readMethod in class AbstractHessianInput

Throws:

IOException

startCall

public void startCall()
               throws IOException

Starts reading the call, including the headers.

The call expects the following protocol data

 c major minor
 m b16 b8 method
 

Specified by:

startCall in class AbstractHessianInput

Throws:

IOException

completeCall

public void completeCall()
                  throws IOException

Completes reading the call

A successful completion will have a single value:

 z
 

Specified by:

completeCall in class AbstractHessianInput

Throws:

IOException

readReply

public Object readReply(Class expectedClass)
                 throws Throwable

Reads a reply as an object. If the reply has a fault, throws the exception.

Specified by:

readReply in class AbstractHessianInput

Throws:

Throwable

startReply

public void startReply()
                throws Throwable

Starts reading the reply

A successful completion will have a single value:

 r
 

Specified by:

startReply in class AbstractHessianInput

Throws:

Throwable

startReplyBody

public void startReplyBody()
                    throws Throwable

Description copied from class: AbstractHessianInput

Starts reading the body of the reply, i.e. after the 'r' has been parsed.

Overrides:

startReplyBody in class AbstractHessianInput

Throws:

Throwable

completeReply

public void completeReply()
                   throws IOException

Completes reading the call

A successful completion will have a single value:

 z
 

Specified by:

completeReply in class AbstractHessianInput

Throws:

IOException

completeValueReply

public void completeValueReply()
                        throws IOException

Completes reading the call

A successful completion will have a single value:

 z
 

Throws:

IOException

readHeader

public String readHeader()
                  throws IOException

Reads a header, returning null if there are no headers.

 H b16 b8 value
 

Specified by:

readHeader in class AbstractHessianInput

Throws:

IOException

readNull

public void readNull()
              throws IOException

Reads a null

 N
 

Specified by:

readNull in class AbstractHessianInput

Throws:

IOException

readBoolean

public boolean readBoolean()
                    throws IOException

Reads a boolean

 T
 F
 

Specified by:

readBoolean in class AbstractHessianInput

Throws:

IOException

readShort

public short readShort()
                throws IOException

Reads a short

 I b32 b24 b16 b8
 

Throws:

IOException

readInt

public int readInt()
            throws IOException

Reads an integer

 I b32 b24 b16 b8
 

Specified by:

readInt in class AbstractHessianInput

Throws:

IOException

readLong

public long readLong()
              throws IOException

Reads a long

 L b64 b56 b48 b40 b32 b24 b16 b8
 

Specified by:

readLong in class AbstractHessianInput

Throws:

IOException

readFloat

public float readFloat()
                throws IOException

Reads a float

 D b64 b56 b48 b40 b32 b24 b16 b8
 

Throws:

IOException

readDouble

public double readDouble()
                  throws IOException

Reads a double

 D b64 b56 b48 b40 b32 b24 b16 b8
 

Specified by:

readDouble in class AbstractHessianInput

Throws:

IOException

readUTCDate

public long readUTCDate()
                 throws IOException

Reads a date.

 T b64 b56 b48 b40 b32 b24 b16 b8
 

Specified by:

readUTCDate in class AbstractHessianInput

Throws:

IOException

readChar

public int readChar()
             throws IOException

Reads a byte from the stream.

Throws:

IOException

readString

public int readString(char[] buffer,
                      int offset,
                      int length)
               throws IOException

Reads a byte array from the stream.

Throws:

IOException

readString

public String readString()
                  throws IOException

Reads a string

 S b16 b8 string value
 

Specified by:

readString in class AbstractHessianInput

Throws:

IOException

readNode

public Node readNode()
              throws IOException

Reads an XML node.

 S b16 b8 string value
 

Overrides:

readNode in class AbstractHessianInput

Throws:

IOException

readBytes

public byte[] readBytes()
                 throws IOException

Reads a byte array

 B b16 b8 data value
 

Specified by:

readBytes in class AbstractHessianInput

Throws:

IOException

readByte

public int readByte()
             throws IOException

Reads a byte from the stream.

Throws:

IOException

readBytes

public int readBytes(byte[] buffer,
                     int offset,
                     int length)
              throws IOException

Reads a byte array from the stream.

Throws:

IOException

readObject

public Object readObject(Class cl)
                  throws IOException

Reads an object from the input stream with an expected type.

Specified by:

readObject in class AbstractHessianInput

Parameters:

cl - the expected class if the protocol doesn't supply it.

Throws:

IOException

readObject

public Object readObject()
                  throws IOException

Reads an arbitrary object from the input stream when the type is unknown.

Specified by:

readObject in class AbstractHessianInput

Throws:

IOException

readRemote

public Object readRemote()
                  throws IOException

Reads a remote object.

Specified by:

readRemote in class AbstractHessianInput

Throws:

IOException

readRef

public Object readRef()
               throws IOException

Reads a reference.

Specified by:

readRef in class AbstractHessianInput

Throws:

IOException

readListStart

public int readListStart()
                  throws IOException

Reads the start of a list.

Specified by:

readListStart in class AbstractHessianInput

Throws:

IOException

readMapStart

public int readMapStart()
                 throws IOException

Reads the start of a list.

Specified by:

readMapStart in class AbstractHessianInput

Throws:

IOException

isEnd

public boolean isEnd()
              throws IOException

Returns true if this is the end of a list or a map.

Specified by:

isEnd in class AbstractHessianInput

Throws:

IOException

readEnd

public void readEnd()
             throws IOException

Reads the end byte.

Specified by:

readEnd in class AbstractHessianInput

Throws:

IOException

readMapEnd

public void readMapEnd()
                throws IOException

Reads the end byte.

Specified by:

readMapEnd in class AbstractHessianInput

Throws:

IOException

readListEnd

public void readListEnd()
                 throws IOException

Reads the end byte.

Specified by:

readListEnd in class AbstractHessianInput

Throws:

IOException

addRef

public int addRef(Object ref)

Adds a list/map reference.

Specified by:

addRef in class AbstractHessianInput

setRef

public void setRef(int i,
                   Object ref)

Adds a list/map reference.

Specified by:

setRef in class AbstractHessianInput

resetReferences

public void resetReferences()

Resets the references for streaming.

Overrides:

resetReferences in class AbstractHessianInput

resolveRemote

public Object resolveRemote(String type,
                            String url)
                     throws IOException

Resolves a remote object.

Throws:

IOException

readType

public String readType()
                throws IOException

Parses a type from the stream.

 t b16 b8
 

Specified by:

readType in class AbstractHessianInput

Throws:

IOException

readLength

public int readLength()
               throws IOException

Parses the length for an array

 l b32 b24 b16 b8
 

Specified by:

readLength in class AbstractHessianInput

Throws:

IOException

readInputStream

public InputStream readInputStream()
                            throws IOException

Reads bytes based on an input stream.

Specified by:

readInputStream in class AbstractHessianInput

Throws:

IOException

close

public void close()

Overrides:

close in class AbstractHessianInput

getReader

public Reader getReader()

Description copied from class: AbstractHessianInput

Starts reading a string. All the characters must be read before calling the next method. The actual characters will be read with the reader's read() or read(char [], int, int).

 s b16 b8 non-final string chunk
 S b16 b8 final string chunk
 

Specified by:

getReader in class AbstractHessianInput

expect

protected IOException expect(String expect,
                             int ch)

codeName

protected String codeName(int ch)

error

protected IOException error(String message)