Dependable

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org.apache.derby.catalog
Interface Dependable

public interface Dependable

A Dependable is an in-memory representation of an object managed by the Dependency System. There are two kinds of Dependables: Providers and Dependents. Dependents depend on Providers and are responsible for executing compensating logic when their Providers change.

The fields represent the known Dependables.

Persistent dependencies (those between database objects) are stored in SYS.SYSDEPENDS.

Field Summary

static java.lang.String ALIAS


static java.lang.String COLUMNS_IN_TABLE


static java.lang.String CONGLOMERATE


static java.lang.String CONSTRAINT


static java.lang.String DEFAULT


static java.lang.String FILE


static java.lang.String HEAP


static java.lang.String INDEX


static java.lang.String PREPARED_STATEMENT


static java.lang.String SCHEMA


static java.lang.String STORED_PREPARED_STATEMENT


static java.lang.String TABLE


static java.lang.String TRIGGER


static java.lang.String VIEW


Method Summary

java.lang.String getClassType()
          Get the unique class id for the Dependable.

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

UUID getObjectID()
          Get the UUID of this Dependable OBJECT.

java.lang.String getObjectName()
          Get the name of this Dependable OBJECT.

boolean isPersistent()
          Return whether or not this Dependable is persistent.

Field Detail

ALIAS

public static final java.lang.String ALIAS

See Also:: Constant Field Values

CONGLOMERATE

public static final java.lang.String CONGLOMERATE

See Also:: Constant Field Values

CONSTRAINT

public static final java.lang.String CONSTRAINT

See Also:: Constant Field Values

DEFAULT

public static final java.lang.String DEFAULT

See Also:: Constant Field Values

HEAP

public static final java.lang.String HEAP

See Also:: Constant Field Values

INDEX

public static final java.lang.String INDEX

See Also:: Constant Field Values

PREPARED_STATEMENT

public static final java.lang.String PREPARED_STATEMENT

See Also:: Constant Field Values

FILE

public static final java.lang.String FILE

See Also:: Constant Field Values

STORED_PREPARED_STATEMENT

public static final java.lang.String STORED_PREPARED_STATEMENT

See Also:: Constant Field Values

TABLE

public static final java.lang.String TABLE

See Also:: Constant Field Values

COLUMNS_IN_TABLE

public static final java.lang.String COLUMNS_IN_TABLE

See Also:: Constant Field Values

TRIGGER

public static final java.lang.String TRIGGER

See Also:: Constant Field Values

VIEW

public static final java.lang.String VIEW

See Also:: Constant Field Values

SCHEMA

public static final java.lang.String SCHEMA

See Also:: Constant Field Values

Method Detail

getDependableFinder

public DependableFinder getDependableFinder()

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

getObjectName

public java.lang.String getObjectName()

Get the name of this Dependable OBJECT. This is useful for diagnostic messages.

getObjectID

public UUID getObjectID()

Get the UUID of this Dependable OBJECT.

isPersistent

public boolean isPersistent()

Return whether or not this Dependable is persistent. Persistent dependencies are stored in SYS.SYSDEPENDS.

getClassType

public java.lang.String getClassType()

Get the unique class id for the Dependable. Every Dependable belongs to a class of Dependables.