equip.runtime
Class ObjectInputStream

java.lang.Object
  java.io.InputStream
      java.io.FilterInputStream
          java.io.DataInputStream
              equip.runtime.ObjectInputStream

All Implemented Interfaces:

java.io.DataInput

public class ObjectInputStream

extends java.io.DataInputStream

EQUIP-specific serialisation input stream for reading serialised instances of ValueBase from. Used in place of ObjectInputStream since the serialisation is the same for EQUIP IDL-defined classes in C++ as well.

Field Summary

(package private) static java.lang.ClassLoader

loader shared loader

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

ObjectInputStream(java.io.InputStream in)
Construct over a InputStream.

Method Summary

ValueBase	readObject() read an object (subclass of ValueBase) from the input stream; handles nulls ok.
void	readObjectEnd() Internal operation use by object de-serialisers
void	readObjectStart() Internal operation use by object de-serialisers
java.lang.String	readString() Read a Java string from the stream (handles nulls ok).

Methods inherited from class java.io.DataInputStream

read, read, readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, readUTF, skipBytes

Methods inherited from class java.io.FilterInputStream

available, close, mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

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

Field Detail

loader

static java.lang.ClassLoader loader

shared loader

Constructor Detail

ObjectInputStream

public ObjectInputStream(java.io.InputStream in)
                  throws java.io.IOException

Construct over a InputStream. Note: like ObjectInputStream, this constructor will block until it has read some information from the input stream that is generated by the corresponding ObjectOutputStream; if this information is not available (e.g. due to order of stream creation, or buffering) then you may get deadlock.

Throws:

java.io.IOException - If stream does not appear to originate from a compatible ObjectOutputStream.

Method Detail

readString

public java.lang.String readString()
                            throws java.io.IOException

Read a Java string from the stream (handles nulls ok).

Throws:

java.io.IOException

readObject

public ValueBase readObject()
                     throws java.io.IOException,
                            java.lang.ClassNotFoundException,
                            java.lang.InstantiationException

read an object (subclass of ValueBase) from the input stream; handles nulls ok.

Returns:

De-serialised object, or null if null was written explicitly to the stream.

Throws:

java.io.IOException - Miscellaneous problem, e.g. end of stream.

java.lang.ClassNotFoundException - The class named in the stream could not be loaded in this JVM.

java.lang.InstantiationException - There was a problem creating an instance of the class named in the stream.

readObjectStart

public void readObjectStart()
                     throws java.io.IOException

Internal operation use by object de-serialisers

Throws:

java.io.IOException

readObjectEnd

public void readObjectEnd()
                   throws java.io.IOException

Internal operation use by object de-serialisers

Throws:

java.io.IOException