ConstantPoolEntry (Apache Derby V10.14 Internals)

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

Fields
Modifier and Type Field Description

protected boolean doubleSlot

protected int index

protected int tag

Constructor Summary

Constructors
Modifier Constructor Description

protected ConstantPoolEntry(int tag)

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`(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