org.apache.derby.iapi.sql.dictionary
Class DependencyDescriptor

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

All Implemented Interfaces:

UniqueTupleDescriptor

public class DependencyDescriptor
extends TupleDescriptor
implements UniqueTupleDescriptor

DependencyDescriptor represents a persistent dependency between SQL objects, such as a TRIGGER being dependent on a TABLE. A DependencyDescriptor is stored in SYSDEPENDS as four separate columms corresponding to the getters of this class.

Field Summary

private DependableFinder	dependentBloodhound
private UUID	dependentID public interface for this class is: public DependableFinder getDependentFinder(); public UUID getProviderID(); public DependableFinder getProviderFinder();
private DependableFinder	providerBloodhound
private UUID	providerID

Constructor Summary

DependencyDescriptor(Dependent dependent, Provider provider)
Constructor for a DependencyDescriptor

DependencyDescriptor(UUID dependentID, DependableFinder dependentBloodhound, UUID providerID, DependableFinder providerBloodhound)
Constructor for a DependencyDescriptor

Method Summary

DependableFinder	getDependentFinder() Get the dependent's type for the dependency.
DependableFinder	getProviderFinder() Get the provider's type for the dependency.
UUID	getProviderID() Get the provider's ID for the dependency.
UUID	getUUID() Get the dependent's ID for the dependency.

Methods inherited from class org.apache.derby.iapi.sql.dictionary.TupleDescriptor

getColumnDependableFinder, getDataDictionary, getDependableFinder, getDescriptorName, getDescriptorType, isPersistent, setDataDictionary

Methods inherited from class java.lang.Object

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

Field Detail

dependentID

private final UUID dependentID

public interface for this class is:

1. public DependableFinder getDependentFinder();
2. public UUID getProviderID();
3. public DependableFinder getProviderFinder();

dependentBloodhound

private final DependableFinder dependentBloodhound

providerID

private final UUID providerID

providerBloodhound

private final DependableFinder providerBloodhound

Constructor Detail

DependencyDescriptor

public DependencyDescriptor(Dependent dependent,
                            Provider provider)

Constructor for a DependencyDescriptor

Parameters:

dependent - The Dependent

provider - The Provider

DependencyDescriptor

public DependencyDescriptor(UUID dependentID,
                            DependableFinder dependentBloodhound,
                            UUID providerID,
                            DependableFinder providerBloodhound)

Constructor for a DependencyDescriptor

Parameters:

dependentID - The Dependent ID

dependentBloodhound - The bloodhound for finding the Dependent

providerID - The Provider ID

providerBloodhound - The bloodhound for finding the Provider

Method Detail

getUUID

public UUID getUUID()

Get the dependent's ID for the dependency.

Specified by:

getUUID in interface UniqueTupleDescriptor

Returns:

The dependent's ID.

getDependentFinder

public DependableFinder getDependentFinder()

Get the dependent's type for the dependency.

Returns:

The dependent's type.

getProviderID

public UUID getProviderID()

Get the provider's ID for the dependency.

Returns:

The provider's ID.

getProviderFinder

public DependableFinder getProviderFinder()

Get the provider's type for the dependency.

Returns:

The provider's type.