oracle.jdeveloper.db.dependency

Interface DBObjectReferenceProvider

All Superinterfaces:

ReferenceProvider

public interface DBObjectReferenceProvider
extends ReferenceProvider

Interface for ReferenceProvider implementations to implement if they wish to provide DBObjectReference implementations in order to be notified of changes to the referenced DBObject.

Since:

12

See Also:

DBObjectReference

Method Summary

Methods

Modifier and Type	Method and Description
java.util.Collection<java.lang.String>	listEventProperties(DBObjectDeclaration decl) Lists the properties that need to be changed on the declared DBObject that would need any DBObjectReferences listed by this provider to be notified.
boolean	notifyOfRemoval(DBObjectDeclaration decl) Tests whether any DBObjectReference in this DBObjectReferenceProvider might be interested in the removal of the given declaration.

Methods inherited from interface oracle.ide.dependency.ReferenceProvider

canFindReferences, canGetReference, canGetReferences, findReferences, getReference, getReferences

Method Detail

listEventProperties

java.util.Collection<java.lang.String> listEventProperties(DBObjectDeclaration decl)

Lists the properties that need to be changed on the declared DBObject that would need any DBObjectReferences listed by this provider to be notified.

By allowing filtering at the DBObjectReferenceProvider level we allow operations that change simple properties (changes to which do not need to be propogated) to avoid the performance hit of a findReferences. Consequently this method should list as few properties as possible.

Do not do any find operation, this is expected to be a quick check.

Parameters:

decl - the DBObjectDeclaration for the DBObject that has been changed.

Returns:

a collection of property names for any property that this is interested in.

See Also:

Property

notifyOfRemoval

boolean notifyOfRemoval(DBObjectDeclaration decl)

Tests whether any DBObjectReference in this DBObjectReferenceProvider might be interested in the removal of the given declaration. When propogating remove events this method is a quick way of a ReferenceProvider excusing itself from the lookup of References because it knows it would never be interested in the removal of the given declaration.

For example if this provider has no Reference implementations that are interested in removal, this should return false. If you are only interested in Table declarations and the given declaration is for a View then return false etc.

Do not do any find operation, this is expected to be a quick check.