Package com.db4o.internal.query.processor

Class QCandidate

java.lang.Object

com.db4o.foundation.Tree<java.lang.Integer>

com.db4o.internal.TreeInt

com.db4o.internal.query.processor.QCandidateBase

com.db4o.internal.query.processor.QCandidate

All Implemented Interfaces:

DeepClone, ShallowClone, Visitable<java.lang.Integer>, InternalCandidate, ParentCandidate, Readable, ReadWriteable, Candidate

public class QCandidate
extends QCandidateBase
implements ParentCandidate

Represents an actual object in the database. Forms a tree structure, indexed by id. Can have dependents that are doNotInclude'd in the query result when this is doNotInclude'd.

Field Summary

Fields inherited from class com.db4o.internal.query.processor.QCandidateBase

_candidates, _dependants

Fields inherited from class com.db4o.internal.TreeInt

_key

Fields inherited from class com.db4o.foundation.Tree

_preceding, _size, _subsequent

Constructor Summary

Constructors

Constructor	Description
QCandidate(QCandidates candidates, java.lang.Object member, int id)

Method Summary

Modifier and Type	Method	Description
ClassMetadata	classMetadata()
void	classMetadata(ClassMetadata classMetadata)
boolean	createChild(QField field, QCandidates candidates)
boolean	evaluate(QConObject a_constraint, QE a_evaluator)
boolean	fieldIsAvailable()
java.lang.Object	getObject()	Returns the persistent object that is represented by this query Candidate.
PreparedComparison	prepareComparison(ObjectContainerBase container, java.lang.Object constraint)
java.lang.Object	shallowClone()
java.lang.String	toString()
void	useField(QField a_field)

Methods inherited from class com.db4o.internal.query.processor.QCandidateBase

addDependant, candidates, doNotInclude, duplicates, evaluate, getRoot, id, include, include, objectContainer, onAttemptToAddDuplicate, pendingJoins, root, transaction

Methods inherited from class com.db4o.internal.TreeInt

add, addAll, compare, equals, find, find, key, marshalledLength, marshalledLength, marshalledLength, ownLength, read, removeLike, shallowCloneInternal, write, write, write

Methods inherited from class com.db4o.foundation.Tree

accept, add, add, add, addedOrExisting, balance, balanceCheckNulls, calculateSize, deepClone, deepClone, depth, filter, find, find, findGreaterOrEqual, findSmaller, first, last, last, nodes, ownSize, remove, removeChildren, removeFirst, removeLike, removeLike, removeNode, root, rotateLeft, rotateRight, setSizeOwn, setSizeOwnPlus, setSizeOwnPlus, setSizeOwnPreceding, setSizeOwnPrecedingSubsequent, setSizeOwnSubsequent, size, size, traverse, traverse, traverse, traverseFromLeaves, wasAddedToTree

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.db4o.query.Candidate

include, objectContainer

Methods inherited from interface com.db4o.internal.query.processor.InternalCandidate

candidates, doNotInclude, evaluate, getRoot, id, include, pendingJoins, root, transaction

Constructor Detail

QCandidate

public QCandidate(QCandidates candidates,
                  java.lang.Object member,
                  int id)

Method Detail

shallowClone

public java.lang.Object shallowClone()

Specified by:

shallowClone in interface ShallowClone

Overrides:

shallowClone in class TreeInt

createChild

public boolean createChild(QField field,
                           QCandidates candidates)

Specified by:

createChild in interface ParentCandidate

fieldIsAvailable

public boolean fieldIsAvailable()

Specified by:

fieldIsAvailable in interface InternalCandidate

classMetadata

public ClassMetadata classMetadata()

Specified by:

classMetadata in interface InternalCandidate

toString

public java.lang.String toString()

Overrides:

toString in class TreeInt

useField

public void useField(QField a_field)

Specified by:

useField in interface ParentCandidate

classMetadata

public void classMetadata(ClassMetadata classMetadata)

evaluate

public boolean evaluate(QConObject a_constraint,
                        QE a_evaluator)

Specified by:

evaluate in interface InternalCandidate

getObject

public java.lang.Object getObject()

Description copied from interface: Candidate

Returns the persistent object that is represented by this query Candidate.

Specified by:

getObject in interface Candidate

Returns:

Object the persistent object.

prepareComparison

public PreparedComparison prepareComparison(ObjectContainerBase container,
                                            java.lang.Object constraint)

Specified by:

prepareComparison in interface InternalCandidate