org.datanucleus.store

Class AbstractExtent

java.lang.Object

org.datanucleus.store.AbstractExtent

All Implemented Interfaces:

Extent

Direct Known Subclasses:

DefaultCandidateExtent

public abstract class AbstractExtent
extends Object
implements Extent

Abstract representation of a JDO Extent. Suitable for use with all datastores.

Field Summary

Fields

Modifier and Type	Field and Description
protected Class	candidateClass The candidate class.
protected AbstractClassMetaData	cmd ClassMetaData for the candidate class.
protected ExecutionContext	ec ExecutionContext
protected static Localiser	LOCALISER Localised messages source
protected boolean	subclasses Whether to include subclasses.

Constructor Summary

Constructors

Constructor and Description
AbstractExtent(ExecutionContext ec, Class cls, boolean subclasses, AbstractClassMetaData cmd) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
Class	getCandidateClass() Accessor for the class of instances in this Extent.
ExecutionContext	getExecutionContext() Accessor for the owning execution context.
boolean	hasSubclasses() Returns whether this Extent was defined to contain subclasses.
String	toString() Stringifier method.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.datanucleus.store.Extent

close, closeAll, getFetchPlan, iterator

Field Detail

LOCALISER

protected static final Localiser LOCALISER

Localised messages source

ec

protected final ExecutionContext ec

ExecutionContext

candidateClass

protected final Class candidateClass

The candidate class. We store the class since we need to retain it for class loading.

subclasses

protected final boolean subclasses

Whether to include subclasses.

cmd

protected final AbstractClassMetaData cmd

ClassMetaData for the candidate class.

Constructor Detail

AbstractExtent

public AbstractExtent(ExecutionContext ec,
              Class cls,
              boolean subclasses,
              AbstractClassMetaData cmd)

Constructor.

Parameters:

ec - Execution Context

cls - candidate class

subclasses - Whether to include subclasses

cmd - MetaData for the candidate class

Method Detail

hasSubclasses

public boolean hasSubclasses()

Returns whether this Extent was defined to contain subclasses.

Specified by:

hasSubclasses in interface Extent

Returns:

true if this Extent was defined to include subclasses.

getCandidateClass

public Class getCandidateClass()

Accessor for the class of instances in this Extent.

Specified by:

getCandidateClass in interface Extent

Returns:

the Class of instances of this Extent

getExecutionContext

public ExecutionContext getExecutionContext()

Accessor for the owning execution context.

Specified by:

getExecutionContext in interface Extent

Returns:

execution context

toString

public String toString()

Stringifier method.

Overrides:

toString in class Object

Returns:

Stringified form of this object