com.caucho.hessian.io

Class AbstractHessianInput

java.lang.Object

com.caucho.hessian.io.AbstractHessianInput

Direct Known Subclasses:

AbstractBurlapInput, Hessian2Input, HessianInput

public abstract class AbstractHessianInput
extends Object

Abstract base class for Hessian requests. Hessian users should only need to use the methods in this class.

 AbstractHessianInput in = ...; // get input
 String value;

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

Constructor Summary

Constructors

Constructor and Description
AbstractHessianInput()

Method Summary

Modifier and Type	Method and Description
abstract int	addRef(Object obj) Adds an object reference.
void	close()
abstract void	completeCall() Completes reading the call
abstract void	completeReply() Completes reading the call
abstract String	getMethod() Returns the call's method
abstract Reader	getReader() Starts reading a string.
HessianRemoteResolver	getRemoteResolver() Sets the resolver used to lookup remote objects.
void	init(InputStream is) Initialize the Hessian stream with the underlying input stream.
abstract boolean	isEnd() Returns true if the data has ended.
abstract boolean	readBoolean() Reads a boolean
abstract byte[]	readBytes() Reads a byte array.
abstract int	readCall() Reads the call
abstract double	readDouble() Reads a double.
abstract void	readEnd() Read the end byte
abstract String	readHeader() Reads a header, returning null if there are no headers.
abstract InputStream	readInputStream() Starts reading a byte array using an input stream.
abstract int	readInt() Reads an integer
abstract int	readLength() Reads the length of a list.
abstract void	readListEnd() Read the end byte
abstract int	readListStart() Reads the start of a list
abstract long	readLong() Reads a long
abstract void	readMapEnd() Read the end byte
abstract int	readMapStart() Reads the start of a map
abstract String	readMethod() Starts reading the call
int	readMethodArgLength() Reads the number of method arguments
Node	readNode() Reads an XML node encoded in UTF-8
abstract void	readNull() Reads a null
abstract Object	readObject() Reads an arbitrary object from the input stream.
abstract Object	readObject(Class expectedClass) Reads an arbitrary object from the input stream.
abstract Object	readRef() Reads a reference
abstract Object	readRemote() Reads a remote object reference to the stream.
abstract Object	readReply(Class expectedClass) Reads a reply as an object.
abstract String	readString() Reads a string encoded in UTF-8
boolean	readToOutputStream(OutputStream os) Reads data to an output stream.
abstract String	readType() Reads an object type.
abstract long	readUTCDate() Reads a date.
void	resetReferences() Resets the references for streaming.
abstract void	setRef(int i, Object obj) Sets an object reference.
void	setRemoteResolver(HessianRemoteResolver resolver) Sets the resolver used to lookup remote objects.
void	setSerializerFactory(SerializerFactory ser) Sets the serializer factory.
void	skipOptionalCall() For backward compatibility with HessianSkeleton
abstract void	startCall() Starts reading the call, including the headers.
abstract void	startReply() Starts reading the reply
void	startReplyBody() Starts reading the body of the reply, i.e.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractHessianInput

public AbstractHessianInput()

Method Detail

init

public void init(InputStream is)

Initialize the Hessian stream with the underlying input stream.

getMethod

public abstract String getMethod()

Returns the call's method

setRemoteResolver

public void setRemoteResolver(HessianRemoteResolver resolver)

Sets the resolver used to lookup remote objects.

getRemoteResolver

public HessianRemoteResolver getRemoteResolver()

Sets the resolver used to lookup remote objects.

setSerializerFactory

public void setSerializerFactory(SerializerFactory ser)

Sets the serializer factory.

readCall

public abstract int readCall()
                      throws IOException

Reads the call

 c major minor
 

Throws:

IOException

skipOptionalCall

public void skipOptionalCall()
                      throws IOException

For backward compatibility with HessianSkeleton

Throws:

IOException

readHeader

public abstract String readHeader()
                           throws IOException

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

 H b16 b8 value
 

Throws:

IOException

readMethod

public abstract String readMethod()
                           throws IOException

Starts reading the call

A successful completion will have a single value:

 m b16 b8 method
 

Throws:

IOException

readMethodArgLength

public int readMethodArgLength()
                        throws IOException

Reads the number of method arguments

Returns:

-1 for a variable length (hessian 1.0)

Throws:

IOException

startCall

public abstract 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
 

Throws:

IOException

completeCall

public abstract void completeCall()
                           throws IOException

Completes reading the call

The call expects the following protocol data

 Z
 

Throws:

IOException

readReply

public abstract Object readReply(Class expectedClass)
                          throws Throwable

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

Throws:

Throwable

startReply

public abstract void startReply()
                         throws Throwable

Starts reading the reply

A successful completion will have a single value:

 r
 v
 

Throws:

Throwable

startReplyBody

public void startReplyBody()
                    throws Throwable

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

Throws:

Throwable

completeReply

public abstract void completeReply()
                            throws IOException

Completes reading the call

A successful completion will have a single value:

 z
 

Throws:

IOException

readBoolean

public abstract boolean readBoolean()
                             throws IOException

Reads a boolean

 T
 F
 

Throws:

IOException

readNull

public abstract void readNull()
                       throws IOException

Reads a null

 N
 

Throws:

IOException

readInt

public abstract int readInt()
                     throws IOException

Reads an integer

 I b32 b24 b16 b8
 

Throws:

IOException

readLong

public abstract long readLong()
                       throws IOException

Reads a long

 L b64 b56 b48 b40 b32 b24 b16 b8
 

Throws:

IOException

readDouble

public abstract double readDouble()
                           throws IOException

Reads a double.

 D b64 b56 b48 b40 b32 b24 b16 b8
 

Throws:

IOException

readUTCDate

public abstract long readUTCDate()
                          throws IOException

Reads a date.

 T b64 b56 b48 b40 b32 b24 b16 b8
 

Throws:

IOException

readString

public abstract String readString()
                           throws IOException

Reads a string encoded in UTF-8

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

Throws:

IOException

readNode

public Node readNode()
              throws IOException

Reads an XML node encoded in UTF-8

 x b16 b8 non-final xml chunk
 X b16 b8 final xml chunk
 

Throws:

IOException

getReader

public abstract Reader getReader()
                          throws IOException

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
 

Throws:

IOException

readInputStream

public abstract InputStream readInputStream()
                                     throws IOException

Starts reading a byte array using an input stream. All the bytes must be read before calling the following method.

 b b16 b8 non-final binary chunk
 B b16 b8 final binary chunk
 

Throws:

IOException

readToOutputStream

public boolean readToOutputStream(OutputStream os)
                           throws IOException

Reads data to an output stream.

 b b16 b8 non-final binary chunk
 B b16 b8 final binary chunk
 

Throws:

IOException

readBytes

public abstract byte[] readBytes()
                          throws IOException

Reads a byte array.

 b b16 b8 non-final binary chunk
 B b16 b8 final binary chunk
 

Throws:

IOException

readObject

public abstract Object readObject(Class expectedClass)
                           throws IOException

Reads an arbitrary object from the input stream.

Parameters:

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

Throws:

IOException

readObject

public abstract Object readObject()
                           throws IOException

Reads an arbitrary object from the input stream.

Throws:

IOException

readRemote

public abstract Object readRemote()
                           throws IOException

Reads a remote object reference to the stream. The type is the type of the remote interface.

 'r' 't' b16 b8 type url
 

Throws:

IOException

readRef

public abstract Object readRef()
                        throws IOException

Reads a reference

 R b32 b24 b16 b8
 

Throws:

IOException

addRef

public abstract int addRef(Object obj)
                    throws IOException

Adds an object reference.

Throws:

IOException

setRef

public abstract void setRef(int i,
                            Object obj)
                     throws IOException

Sets an object reference.

Throws:

IOException

resetReferences

public void resetReferences()

Resets the references for streaming.

readListStart

public abstract int readListStart()
                           throws IOException

Reads the start of a list

Throws:

IOException

readLength

public abstract int readLength()
                        throws IOException

Reads the length of a list.

Throws:

IOException

readMapStart

public abstract int readMapStart()
                          throws IOException

Reads the start of a map

Throws:

IOException

readType

public abstract String readType()
                         throws IOException

Reads an object type.

Throws:

IOException

isEnd

public abstract boolean isEnd()
                       throws IOException

Returns true if the data has ended.

Throws:

IOException

readEnd

public abstract void readEnd()
                      throws IOException

Read the end byte

Throws:

IOException

readMapEnd

public abstract void readMapEnd()
                         throws IOException

Read the end byte

Throws:

IOException

readListEnd

public abstract void readListEnd()
                          throws IOException

Read the end byte

Throws:

IOException

close

public void close()
           throws IOException

Throws:

IOException