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 and Description

static class QQueryBase.CreateCandidateCollectionResult

Nested Classes
Modifier and Type	Class and Description
`static class`	`QQueryBase.CreateCandidateCollectionResult`

Constructor Summary

Constructors
Modifier Constructor and Description

protected QQueryBase()

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

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

Method Summary

Methods
Modifier and Type	Method and 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()
```

Class QQueryBase

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

QQueryBase

QQueryBase

Method Detail

captureQueryResultConfig

constrain

constraints

descend

execute

executeLocal

executeLazy

getQueryResult

executeQuery

stream

container

executeSnapshot

triggeringQueryEvents

checkConstraintsEvaluationMode

createCandidateCollection

transaction

iterateConstraints

orderAscending

orderDescending

addOrdering

orderings

marshall

unmarshall

streamLock

sortBy

requiresSort

comparator

evaluationMode

evaluationMode

prefetchDepth

prefetchCount

toString

parent