Output stream for Hessian requests, compatible with microedition
Java. It only uses classes and types available to J2ME. In
particular, it does not have any support for the <double> type.
MicroHessianOutput does not depend on any classes other than
in J2ME, so it can be extracted independently into a smaller package.
MicroHessianOutput is unbuffered, so any client needs to provide
its own buffering.
OutputStream os = ...; // from http connection
MicroHessianOutput out = new MicroHessianOutput(os);
String value;
out.startCall("hello"); // start hello call
out.writeString("arg1"); // write a string argument
out.completeCall(); // complete the call
completeCall
public void completeCall()
throws IOException Writes the method call:
z
init
public void init(OutputStream os)
printLenString
public void printLenString(String v)
throws IOException Prints a string to the stream, encoded as UTF-8 with preceeding length
printString
public void printString(String v)
throws IOException Prints a string to the stream, encoded as UTF-8
printString
public void printString(String v,
int offset,
int length)
throws IOException Prints a string to the stream, encoded as UTF-8
startCall
public void startCall(String method)
throws IOException Writes the method call:
c major minor
m b16 b8 method-namek
method - the method name to call.
writeBoolean
public void writeBoolean(boolean value)
throws IOException Writes a boolean value to the stream. The boolean will be written
with the following syntax:
T
F
value - the boolean value to write.
writeBytes
public void writeBytes(byte[] buffer)
throws IOException Writes a byte array to the stream.
The array will be written with the following syntax:
B b16 b18 bytes
If the value is null, it will be written as
N
writeBytes
public void writeBytes(byte[] buffer,
int offset,
int length)
throws IOException Writes a byte array to the stream.
The array will be written with the following syntax:
B b16 b18 bytes
If the value is null, it will be written as
N
writeCustomObject
public void writeCustomObject(Object object)
throws IOException Applications which override this can do custom serialization.
object - the object to write.
writeInt
public void writeInt(int value)
throws IOException Writes an integer value to the stream. The integer will be written
with the following syntax:
I b32 b24 b16 b8
value - the integer value to write.
writeListBegin
public void writeListBegin(int length,
String type)
throws IOException Writes the list header to the stream. List writers will call
writeListBegin followed by the list contents and then
call
writeListEnd.
<list>
<type>java.util.ArrayList</type>
<length>3</length>
<int>1</int>
<int>2</int>
<int>3</int>
</list>
writeListEnd
public void writeListEnd()
throws IOException Writes the tail of the list to the stream.
writeLong
public void writeLong(long value)
throws IOException Writes a long value to the stream. The long will be written
with the following syntax:
L b64 b56 b48 b40 b32 b24 b16 b8
value - the long value to write.
writeMapBegin
public void writeMapBegin(String type)
throws IOException Writes the map header to the stream. Map writers will call
writeMapBegin followed by the map contents and then
call
writeMapEnd.
Mt b16 b8 type ( )z
writeMapEnd
public void writeMapEnd()
throws IOException Writes the tail of the map to the stream.
writeNull
public void writeNull()
throws IOException Writes a null value to the stream.
The null will be written with the following syntax
N
writeObject
public void writeObject(Object object)
throws IOException Writes a generic object to the output stream.
writeRef
public void writeRef(int value)
throws IOException Writes a reference.
R b32 b24 b16 b8
value - the integer value to write.
writeRemote
public void writeRemote(String type,
String url)
throws IOException Writes a remote object reference to the stream. The type is the
type of the remote interface.
'r' 't' b16 b8 type url
writeString
public void writeString(String value)
throws IOException Writes a string value to the stream using UTF-8 encoding.
The string will be written with the following syntax:
S b16 b8 string-value
If the value is null, it will be written as
N
value - the string value to write.
writeUTCDate
public void writeUTCDate(long time)
throws IOException Writes a date to the stream.
T b64 b56 b48 b40 b32 b24 b16 b8
time - the date in milliseconds from the epoch in UTC