Package com.caucho.hessian.micro

Class MicroHessianOutput

java.lang.Object
com.caucho.hessian.micro.MicroHessianOutput
public class MicroHessianOutput extends Object
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

  • Field Details

  • Constructor Details

    • MicroHessianOutput

      public MicroHessianOutput(OutputStream os)
      Creates a new Hessian output stream, initialized with an underlying output stream.
      Parameters:
      os - the underlying output stream.

    • MicroHessianOutput

      public MicroHessianOutput()
      Creates an uninitialized Hessian output stream.

  • Method Details

    • init

      public void init(OutputStream os)

    • startCall

      public void startCall(String method) throws IOException
      Writes the method call: 
       c major minor
 m b16 b8 method-namek
      Parameters:
      method - the method name to call.
      Throws:
      IOException

    • completeCall

      public void completeCall() throws IOException
      Writes the method call: 
       z
      Throws:
      IOException

    • 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
      Parameters:
      value - the boolean value to write.
      Throws:
      IOException

    • 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
      Parameters:
      value - the integer value to write.
      Throws:
      IOException

    • 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
      Parameters:
      value - the long value to write.
      Throws:
      IOException

    • writeUTCDate

      public void writeUTCDate(long time) throws IOException
      Writes a date to the stream. 
       T  b64 b56 b48 b40 b32 b24 b16 b8
      Parameters:
      time - the date in milliseconds from the epoch in UTC
      Throws:
      IOException

    • writeNull

      public void writeNull() throws IOException
      Writes a null value to the stream. The null will be written with the following syntax 
       N
      Parameters:
      value - the string value to write.
      Throws:
      IOException

    • 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
      Parameters:
      value - the string value to write.
      Throws:
      IOException

    • 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
      Parameters:
      value - the string value to write.
      Throws:
      IOException

    • 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
      Parameters:
      value - the string value to write.
      Throws:
      IOException

    • writeRef

      public void writeRef(int value) throws IOException
      Writes a reference. 
       R b32 b24 b16 b8
      Parameters:
      value - the integer value to write.
      Throws:
      IOException

    • writeObject

      public void writeObject(Object object) throws IOException
      Writes a generic object to the output stream.
      Throws:
      IOException

    • writeCustomObject

      public void writeCustomObject(Object object) throws IOException
      Applications which override this can do custom serialization.
      Parameters:
      object - the object to write.
      Throws:
      IOException

    • 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>
      Throws:
      IOException

    • writeListEnd

      public void writeListEnd() throws IOException
      Writes the tail of the list to the stream.
      Throws:
      IOException

    • 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
      Throws:
      IOException

    • writeMapEnd

      public void writeMapEnd() throws IOException
      Writes the tail of the map to the stream.
      Throws:
      IOException

    • 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
      Throws:
      IOException

    • printLenString

      public void printLenString(String v) throws IOException
      Prints a string to the stream, encoded as UTF-8 with preceeding length
      Parameters:
      v - the string to print.
      Throws:
      IOException

    • printString

      public void printString(String v) throws IOException
      Prints a string to the stream, encoded as UTF-8
      Parameters:
      v - the string to print.
      Throws:
      IOException

    • printString

      public void printString(String v, int offset, int length) throws IOException
      Prints a string to the stream, encoded as UTF-8
      Parameters:
      v - the string to print.
      Throws:
      IOException