org.apache.derby.iapi.services.classfile
Class ConstantPoolEntry

java.lang.Object
  org.apache.derby.iapi.services.classfile.ConstantPoolEntry

Direct Known Subclasses:

CONSTANT_Double_info, CONSTANT_Float_info, CONSTANT_Index_info, CONSTANT_Integer_info, CONSTANT_Long_info, CONSTANT_Utf8_info

public abstract class ConstantPoolEntry
extends java.lang.Object

Constant Pool class - pages 92-99

Field Summary

protected boolean	doubleSlot
protected int	index
protected int	tag

Constructor Summary

protected

ConstantPoolEntry(int tag)

Method Summary

(package private) abstract int	classFileSize() Return an estimate of the size of the constant pool entry.
(package private) boolean	doubleSlot()
(package private) int	getI1() Get the first index in a index type pool entry.
(package private) int	getI2() Get the second index in a index type pool entry.
(package private) int	getIndex()
(package private) java.lang.Object	getKey() Return the key used to key this object in a hashtable
(package private) int	getTag() Return the tag or type of the entry.
(package private) void	put(ClassFormatOutput out)
(package private) void	setIndex(int index)

Methods inherited from class java.lang.Object

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

Field Detail

tag

protected int tag

doubleSlot

protected boolean doubleSlot

index

protected int index

Constructor Detail

ConstantPoolEntry

protected ConstantPoolEntry(int tag)

Method Detail

getIndex

int getIndex()

setIndex

void setIndex(int index)

doubleSlot

boolean doubleSlot()

getKey

java.lang.Object getKey()

Return the key used to key this object in a hashtable

classFileSize

abstract int classFileSize()

Return an estimate of the size of the constant pool entry.

put

void put(ClassFormatOutput out)
   throws java.io.IOException

Throws:

java.io.IOException

getTag

final int getTag()

Return the tag or type of the entry. Will be equal to one of the constants above, e.g. CONSTANT_Class.

getI1

int getI1()

Get the first index in a index type pool entry. This call is valid when getTag() returns one of

• CONSTANT_Class
• CONSTANT_Fieldref
• CONSTANT_Methodref
• CONSTANT_InterfaceMethodref
• CONSTANT_String
• CONSTANT_NameAndType

getI2

int getI2()

Get the second index in a index type pool entry. This call is valid when getTag() returns one of

• CONSTANT_Fieldref
• CONSTANT_Methodref
• CONSTANT_InterfaceMethodref
• CONSTANT_NameAndType