Package com.db4o.internal.query.processor

Class QQueryBase

java.lang.Object

com.db4o.internal.query.processor.QQueryBase

All Implemented Interfaces:

InternalQuery, Unversioned

Direct Known Subclasses:

QQuery

public abstract class QQueryBase
extends java.lang.Object
implements InternalQuery, Unversioned

QQuery is the users hook on our graph. A QQuery is defined by it's constraints. NOTE: This is just a 'partial' base class to allow for variant implementations in db4oj and db4ojdk1.2. It assumes that itself is an instance of QQuery and should never be used explicitly.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	QQueryBase.CreateCandidateCollectionResult

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	QQueryBase()
protected	QQueryBase(Transaction a_trans, QQuery a_parent, java.lang.String a_field)

Method Summary

Modifier and Type	Method	Description
protected void	addOrdering(SodaQueryComparator.Direction direction, java.util.List<java.lang.String> path)
void	captureQueryResultConfig()
void	checkConstraintsEvaluationMode()
QueryComparator	comparator()
Constraint	constrain(java.lang.Object example)	Search for slot that corresponds to class.
Constraints	constraints()
InternalObjectContainer	container()
QQueryBase.CreateCandidateCollectionResult	createCandidateCollection()
Query	descend(java.lang.String a_field)
QueryEvaluationMode	evaluationMode()
void	evaluationMode(QueryEvaluationMode mode)
ObjectSet	execute()
Iterator4	executeLazy()
void	executeLocal(IdListQueryResult result)
protected QueryResult	executeQuery()
Iterator4	executeSnapshot()
QueryResult	getQueryResult()
Iterator4	iterateConstraints()
void	marshall()
Query	orderAscending()
Query	orderDescending()
java.util.List<SodaQueryComparator.Ordering>	orderings()	Public so it can be used by the LINQ test cases.
QQuery	parent()
int	prefetchCount()
int	prefetchDepth()
boolean	requiresSort()
Query	sortBy(QueryComparator comparator)
protected ObjectContainerBase	stream()
protected java.lang.Object	streamLock()
java.lang.String	toString()
Transaction	transaction()
<T> T	triggeringQueryEvents(Closure4<T> closure)
void	unmarshall(Transaction a_trans)

Methods inherited from class java.lang.Object

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

Constructor Detail

QQueryBase

protected QQueryBase()

QQueryBase

protected QQueryBase(Transaction a_trans,
                     QQuery a_parent,
                     java.lang.String a_field)

Method Detail

captureQueryResultConfig

public void captureQueryResultConfig()

constrain

public Constraint constrain(java.lang.Object example)

Search for slot that corresponds to class.
If not found add it.
Constrain it.

constraints

public Constraints constraints()

descend

public Query descend(java.lang.String a_field)

execute

public ObjectSet execute()

executeLocal

public void executeLocal(IdListQueryResult result)

executeLazy

public Iterator4 executeLazy()

getQueryResult

public QueryResult getQueryResult()

executeQuery

protected final QueryResult executeQuery()

stream

protected ObjectContainerBase stream()

container

public InternalObjectContainer container()

Specified by:

container in interface InternalQuery

executeSnapshot

public Iterator4 executeSnapshot()

triggeringQueryEvents

public <T> T triggeringQueryEvents(Closure4<T> closure)

checkConstraintsEvaluationMode

public void checkConstraintsEvaluationMode()

createCandidateCollection

public QQueryBase.CreateCandidateCollectionResult createCandidateCollection()

transaction

public final Transaction transaction()

iterateConstraints

public Iterator4 iterateConstraints()

orderAscending

public Query orderAscending()

orderDescending

public Query orderDescending()

addOrdering

protected final void addOrdering(SodaQueryComparator.Direction direction,
                                 java.util.List<java.lang.String> path)

orderings

public final java.util.List<SodaQueryComparator.Ordering> orderings()

Public so it can be used by the LINQ test cases.

marshall

public void marshall()

unmarshall

public void unmarshall(Transaction a_trans)

streamLock

protected java.lang.Object streamLock()

sortBy

public Query sortBy(QueryComparator comparator)

requiresSort

public boolean requiresSort()

comparator

public QueryComparator comparator()

evaluationMode

public QueryEvaluationMode evaluationMode()

evaluationMode

public void evaluationMode(QueryEvaluationMode mode)

prefetchDepth

public int prefetchDepth()

prefetchCount

public int prefetchCount()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

parent

public QQuery parent()