DDdependableFinder (Apache Derby V10.14 Internals)

java.lang.Object
- org.apache.derby.impl.sql.catalog.DDdependableFinder

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, DependableFinder, Formatable, TypedFormat

Direct Known Subclasses:

DDColumnDependableFinder
```
public class DDdependableFinder
extends java.lang.Object
implements DependableFinder, Formatable
```
Class for most DependableFinders in the core DataDictionary. This class is stored in SYSDEPENDS for the finders for the provider and dependent. It stores no state, its functionality is driven off its format identifier.

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

private int formatId

Fields
Modifier and Type	Field	Description
`private int`	`formatId`

Constructor Summary

Constructors
Constructor Description

DDdependableFinder(int formatId)
Public constructor for Formatable hoo-hah.

Constructors
Constructor	Description
`DDdependableFinder(int formatId)`	Public constructor for Formatable hoo-hah.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`(package private) Dependable`	`findDependable(DataDictionary dd, UUID dependableObjectID)`	Find the dependable for getDependable.
`Dependable`	`getDependable(DataDictionary dd, UUID dependableObjectID)`	Get the dependable for the given UUID
`java.lang.String`	`getSQLObjectType()`	The name of the class of Dependables as a "SQL Object" which this Finder can find.
`int`	`getTypeFormatId()`	Get the formatID which corresponds to this class.
`void`	`readExternal(java.io.ObjectInput in)`	Read this object from a stream of stored objects.
`java.lang.String`	`toString()`
`void`	`writeExternal(java.io.ObjectOutput out)`	Write this object to a stream of stored objects.

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

- Field Detail
  - formatId
```
private final int formatId
```
- Constructor Detail
  - DDdependableFinder
```
public DDdependableFinder(int formatId)
```
    Public constructor for Formatable hoo-hah.
- Method Detail
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - readExternal
```
public void readExternal(java.io.ObjectInput in)
                  throws java.io.IOException,
                         java.lang.ClassNotFoundException
```
    Read this object from a stream of stored objects. Nothing to do. Our persistent representation is just a 2-byte format id.
    
    Specified by:
    
    readExternal in interface java.io.Externalizable
    
    Parameters:
    
    in - read this.
    
    Throws:
    
    java.io.IOException
    
    java.lang.ClassNotFoundException
  - writeExternal
```
public void writeExternal(java.io.ObjectOutput out)
                   throws java.io.IOException
```
    Write this object to a stream of stored objects. Again, nothing to do. We just stamp the output stream with our Format id.
    
    Specified by:
    
    writeExternal in interface java.io.Externalizable
    
    Parameters:
    
    out - write bytes here.
    
    Throws:
    
    java.io.IOException
  - getTypeFormatId
```
public final int getTypeFormatId()
```
    Get the formatID which corresponds to this class.
    
    Specified by:
    
    getTypeFormatId in interface TypedFormat
    
    Returns:
    
    the formatID of this class
  - getSQLObjectType
```
public java.lang.String getSQLObjectType()
```
    Description copied from interface: DependableFinder
    
    The name of the class of Dependables as a "SQL Object" which this Finder can find. This is a value like "Table" or "View". Every DependableFinder can find some class of Dependables.
    
    Specified by:
    
    getSQLObjectType in interface DependableFinder
    
    Returns:
    
    String type of the "SQL Object" which this Finder can find.
    
    See Also:
    
    DependableFinder.getSQLObjectType()
  - getDependable
```
public final Dependable getDependable(DataDictionary dd,
                                      UUID dependableObjectID)
                               throws StandardException
```
    Get the dependable for the given UUID
    
    Specified by:
    
    getDependable in interface DependableFinder
    
    Parameters:
    
    dd - DataDictionary to use for lookup.
    
    dependableObjectID - the ID of a Dependable. Used to locate that Dependable.
    
    Returns:
    
    the associated Dependable
    
    Throws:
    
    StandardException - thrown on error
  - findDependable
```
Dependable findDependable(DataDictionary dd,
                          UUID dependableObjectID)
                   throws StandardException
```
    Find the dependable for getDependable. Can return a null references, in which case getDependable() will thrown an exception.
    
    Throws:
    
    StandardException

Class DDdependableFinder

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

formatId

Constructor Detail

DDdependableFinder

Method Detail

toString

readExternal

writeExternal

getTypeFormatId

getSQLObjectType

getDependable

findDependable