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org.apache.bcel.classfile
Class Unknown  view Unknown download Unknown.java

java.lang.Object
  extended byorg.apache.bcel.classfile.Attribute
      extended byorg.apache.bcel.classfile.Unknown
All Implemented Interfaces:
java.lang.Cloneable, Node, java.io.Serializable

public final class Unknown
extends Attribute

This class represents a reference to an unknown (i.e., application-specific) attribute of a class. It is instantiated from the Attribute.readAttribute() method. Applications that need to read in application-specific attributes should create an AttributeReader implementation and attach it via Attribute.addAttributeReader.

Version:
$Id: Unknown.java 386056 2006-03-15 11:31:56Z tcurdt $

Field Summary
private  byte[] bytes
           
private  java.lang.String name
           
private static java.util.Map unknown_attributes
           
 
Fields inherited from class org.apache.bcel.classfile.Attribute
constant_pool, length, name_index, tag
 
Constructor Summary
  Unknown(int name_index, int length, byte[] bytes, ConstantPool constant_pool)
          Create a non-standard attribute.
(package private) Unknown(int name_index, int length, java.io.DataInputStream file, ConstantPool constant_pool)
          Construct object from file stream.
  Unknown(Unknown c)
          Initialize from another object.
 
Method Summary
 void accept(Visitor v)
          Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class.
 Attribute copy(ConstantPool _constant_pool)
           
 void dump(java.io.DataOutputStream file)
          Dump unknown bytes to file stream.
 byte[] getBytes()
           
 java.lang.String getName()
           
(package private) static Unknown[] getUnknownAttributes()
           
 void setBytes(byte[] bytes)
           
 java.lang.String toString()
          Convert this Object to a human-readable String.
 
Methods inherited from class org.apache.bcel.classfile.Attribute
addAttributeReader, clone, getConstantPool, getLength, getNameIndex, getTag, readAttribute, removeAttributeReader, setConstantPool, setLength, setNameIndex
 
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

bytes

private byte[] bytes

name

private java.lang.String name

unknown_attributes

private static java.util.Map unknown_attributes
Constructor Detail

Unknown

public Unknown(Unknown c)
Initialize from another object. Note that both objects use the same references (shallow copy). Use clone() for a physical copy.


Unknown

public Unknown(int name_index,
               int length,
               byte[] bytes,
               ConstantPool constant_pool)
Create a non-standard attribute.


Unknown

Unknown(int name_index,
        int length,
        java.io.DataInputStream file,
        ConstantPool constant_pool)
  throws java.io.IOException
Construct object from file stream.

Method Detail

getUnknownAttributes

static Unknown[] getUnknownAttributes()

accept

public void accept(Visitor v)
Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class. I.e., the hierarchy of methods, fields, attributes, etc. spawns a tree of objects.

Specified by:
accept in interface Node
Specified by:
accept in class Attribute

dump

public final void dump(java.io.DataOutputStream file)
                throws java.io.IOException
Dump unknown bytes to file stream.

Overrides:
dump in class Attribute

getBytes

public final byte[] getBytes()

getName

public final java.lang.String getName()

setBytes

public final void setBytes(byte[] bytes)

toString

public final java.lang.String toString()
Description copied from class: java.lang.Object
Convert this Object to a human-readable String. There are no limits placed on how long this String should be or what it should contain. We suggest you make it as intuitive as possible to be able to place it into System.out.println() 55 and such.

It is typical, but not required, to ensure that this method never completes abruptly with a java.lang.RuntimeException.

This method will be called when performing string concatenation with this object. If the result is null, string concatenation will instead use "null".

The default implementation returns getClass().getName() + "@" + Integer.toHexString(hashCode()).

Overrides:
toString in class Attribute

copy

public Attribute copy(ConstantPool _constant_pool)
Specified by:
copy in class Attribute