TupleDescriptor (Apache Derby V10.14 Internals)

java.lang.Object
- org.apache.derby.iapi.sql.dictionary.TupleDescriptor

Direct Known Subclasses:

ColumnDescriptor, PermissionsDescriptor, RoleGrantDescriptor, StatisticsDescriptor, UniqueTupleDescriptor, UserDescriptor
```
public class TupleDescriptor
extends java.lang.Object
```
This is the superclass of all Descriptors. Users of DataDictionary should use the specific descriptor.

Field Summary

Fields
Modifier and Type Field Description

private DataDictionary dataDictionary

Constructor Summary

Constructors
Constructor Description

TupleDescriptor()

TupleDescriptor(DataDictionary dataDictionary)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`(package private) DependableFinder`	`getColumnDependableFinder(int formatId, byte[] columnBitMap)`
`protected DataDictionary`	`getDataDictionary()`
`(package private) DependableFinder`	`getDependableFinder(int formatId)`
`java.lang.String`	`getDescriptorName()`
`java.lang.String`	`getDescriptorType()`	Each descriptor must identify itself with its type; i.e index, check constraint whatever.
`boolean`	`isPersistent()`	Is this provider persistent?
`protected void`	`setDataDictionary(DataDictionary dd)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail
- dataDictionary
```
private DataDictionary dataDictionary
```

Constructor Detail

TupleDescriptor
```
public TupleDescriptor()
```

TupleDescriptor

public TupleDescriptor(DataDictionary dataDictionary)

Method Detail
- getDataDictionary
```
protected DataDictionary getDataDictionary()
```
- setDataDictionary
```
protected void setDataDictionary(DataDictionary dd)
```
- isPersistent
```
public boolean isPersistent()
```
  Is this provider persistent? A stored dependency will be required if both the dependent and provider are persistent.
  
  Returns:
  
  boolean Whether or not this provider is persistent.
- getDependableFinder
```
DependableFinder getDependableFinder(int formatId)
```
- getColumnDependableFinder
```
DependableFinder getColumnDependableFinder(int formatId,
                                           byte[] columnBitMap)
```
- getDescriptorType
```
public java.lang.String getDescriptorType()
```
  Each descriptor must identify itself with its type; i.e index, check constraint whatever.
- getDescriptorName
```
public java.lang.String getDescriptorName()
```