Top Description Fields Constructors Methods
org.apache.derby.iapi.sql.dictionary

public final Class DefaultDescriptor

extends UniqueTupleDescriptor
implements Provider, Dependent
Class Inheritance
All Implemented Interfaces
org.apache.derby.iapi.sql.depend.Dependent, org.apache.derby.catalog.Dependable, org.apache.derby.iapi.sql.depend.Provider
Imports
org.apache.derby.catalog.Dependable, .DependableFinder, .UUID, org.apache.derby.shared.common.error.StandardException, org.apache.derby.shared.common.reference.SQLState, org.apache.derby.shared.common.i18n.MessageService, org.apache.derby.iapi.services.io.StoredFormatIds, org.apache.derby.shared.common.sanity.SanityManager, org.apache.derby.iapi.sql.conn.LanguageConnectionContext, org.apache.derby.iapi.sql.depend.DependencyManager, .Dependent, .Provider
This interface is used to get information from a DefaultDescriptor.

Field Summary

Modifier and TypeField and Description
private final int
columnNumber

private final UUID
defaultUUID

private final UUID
tableUUID

Constructor Summary

AccessConstructor and Description
public
DefaultDescriptor(DataDictionary
the DD
dataDictionary, UUID
The UUID of the default
defaultUUID, UUID
The UUID of the table
tableUUID, int
The column number of the column that the default is for
columnNumber)

Constructor for a DefaultDescriptor

Method Summary

Modifier and TypeMethod and Description
public String

Returns:

char The provider's type.
getClassType()

Implements org.apache.derby.catalog.Dependable.getClassType.

Get the provider's type.

public int

Returns:

The column number of the column.
getColumnNumber()

Get the column number of the column.

public DependableFinder

Returns:

the stored form of this provider
getDependableFinder()

Implements org.apache.derby.catalog.Dependable.getDependableFinder.

Get an object which can be written to disk and which, when read from disk, will find or reconstruct this in-memory Dependable.

public UUID

Returns:

The provider's UUID
getObjectID()

Implements org.apache.derby.catalog.Dependable.getObjectID.

Get the provider's UUID

public String

Returns:

String The name of this provider.
getObjectName()

Implements org.apache.derby.catalog.Dependable.getObjectName.

Return the name of this Provider.

public UUID

Returns:

The UUID of the table.
getTableUUID()

Get the UUID of the table.

public UUID

Returns:

The UUID of the default.
getUUID()

Implements abstract org.apache.derby.iapi.sql.dictionary.UniqueTupleDescriptor.getUUID.

Get the UUID of the default.

public synchronized boolean

Returns:

true if the dependent is currently valid
isValid()

Implements org.apache.derby.iapi.sql.depend.Dependent.isValid.

Check that all of the dependent's dependencies are valid.

public void
makeInvalid(int
The action causing the invalidation
action, LanguageConnectionContext
The LanguageConnectionContext
lcc)

Implements org.apache.derby.iapi.sql.depend.Dependent.makeInvalid.

Mark the dependent as invalid (due to at least one of its dependencies being invalid).

public void
prepareToInvalidate(Provider
the provider
p, int
The action causing the invalidation
action, LanguageConnectionContext
The LanguageConnectionContext
lcc)

Implements org.apache.derby.iapi.sql.depend.Dependent.prepareToInvalidate.

Prepare to mark the dependent as invalid (due to at least one of its dependencies being invalid).

public String

Returns:

A String representation of this DefaultDescriptor
toString()

Overrides java.lang.Object.toString.

Convert the DefaultDescriptor to a String.

Field Detail

columnNumberback to summary
private final int columnNumber
defaultUUIDback to summary
private final UUID defaultUUID
tableUUIDback to summary
private final UUID tableUUID

Constructor Detail

DefaultDescriptorback to summary
public DefaultDescriptor(DataDictionary dataDictionary, UUID defaultUUID, UUID tableUUID, int columnNumber)

Constructor for a DefaultDescriptor

Parameters
dataDictionary:DataDictionary

the DD

defaultUUID:UUID

The UUID of the default

tableUUID:UUID

The UUID of the table

columnNumber:int

The column number of the column that the default is for

Method Detail

getClassTypeback to summary
public String getClassType()

Implements org.apache.derby.catalog.Dependable.getClassType.

Get the provider's type.

Returns:String

char The provider's type.

getColumnNumberback to summary
public int getColumnNumber()

Get the column number of the column.

Returns:int

The column number of the column.

getDependableFinderback to summary
public DependableFinder getDependableFinder()

Implements org.apache.derby.catalog.Dependable.getDependableFinder.

Doc from org.apache.derby.catalog.Dependable.getDependableFinder.

Get an object which can be written to disk and which, when read from disk, will find or reconstruct this in-memory Dependable.

Returns:DependableFinder

the stored form of this provider

See Also
Dependable#getDependableFinder
getObjectIDback to summary
public UUID getObjectID()

Implements org.apache.derby.catalog.Dependable.getObjectID.

Get the provider's UUID

Returns:UUID

The provider's UUID

getObjectNameback to summary
public String getObjectName()

Implements org.apache.derby.catalog.Dependable.getObjectName.

Return the name of this Provider. (Useful for errors.)

Returns:String

String The name of this provider.

getTableUUIDback to summary
public UUID getTableUUID()

Get the UUID of the table.

Returns:UUID

The UUID of the table.

getUUIDback to summary
public UUID getUUID()

Implements abstract org.apache.derby.iapi.sql.dictionary.UniqueTupleDescriptor.getUUID.

Get the UUID of the default.

Returns:UUID

The UUID of the default.

isValidback to summary
public synchronized boolean isValid()

Implements org.apache.derby.iapi.sql.depend.Dependent.isValid.

Check that all of the dependent's dependencies are valid.

Returns:boolean

true if the dependent is currently valid

makeInvalidback to summary
public void makeInvalid(int action, LanguageConnectionContext lcc) throws StandardException

Implements org.apache.derby.iapi.sql.depend.Dependent.makeInvalid.

Mark the dependent as invalid (due to at least one of its dependencies being invalid). Always an error for a constraint -- should never have gotten here.

Parameters
action:int

The action causing the invalidation

lcc:LanguageConnectionContext

Doc from org.apache.derby.iapi.sql.depend.Dependent.makeInvalid.

The LanguageConnectionContext

Exceptions
StandardException:
thrown if called in sanity mode
prepareToInvalidateback to summary
public void prepareToInvalidate(Provider p, int action, LanguageConnectionContext lcc) throws StandardException

Implements org.apache.derby.iapi.sql.depend.Dependent.prepareToInvalidate.

Prepare to mark the dependent as invalid (due to at least one of its dependencies being invalid).

Parameters
p:Provider

the provider

action:int

The action causing the invalidation

lcc:LanguageConnectionContext

Doc from org.apache.derby.iapi.sql.depend.Dependent.prepareToInvalidate.

The LanguageConnectionContext

Exceptions
StandardException:
thrown if unable to make it invalid
toStringback to summary
public String toString()

Overrides java.lang.Object.toString.

Convert the DefaultDescriptor to a String.

Returns:String

A String representation of this DefaultDescriptor