Package io.ebean.common

Class BeanSet<E>

java.lang.Object

io.ebean.common.BeanSet<E>

All Implemented Interfaces:

BeanCollection<E>, BeanCollectionAdd, Serializable, Iterable<E>, Collection<E>, Set<E>

public final class BeanSet<E>
extends Object
implements Set<E>, BeanCollectionAdd

Set capable of lazy loading.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface io.ebean.bean.BeanCollection

BeanCollection.ModifyListenMode

Constructor Summary

Constructors

Constructor	Description
BeanSet()	Create using an underlying LinkedHashSet.
BeanSet(BeanCollectionLoader loader, EntityBean ownerBean, String propertyName)
BeanSet(Set<E> set)	Create with a specific Set implementation.

Method Summary

Modifier and Type	Method	Description
boolean	add(E o)
boolean	addAll(Collection<? extends E> addCollection)
void	addBean(E bean)	Add a bean to the list/set with modifyListen notification.
void	addEntityBean(EntityBean bean)	Add a loaded bean to the collection.
boolean	checkEmptyLazyLoad()	Check after the lazy load that the underlying collection is not null (handle case where join to many not outer).
void	clear()
boolean	contains(Object o)
boolean	containsAll(Collection<?> c)
boolean	equals(Object obj)	Equal if obj is a Set and equal in a Set sense.
Collection<E>	getActualDetails()	Returns the underlying collection of beans from the Set, Map or List.
Collection<?>	getActualEntries()	Returns the underlying entries so for Maps this is a collection of Map.Entry.
Set<E>	getActualSet()	Return the actual underlying set.
ExpressionList<?>	getFilterMany()	Return the filter (if any) that was used in building this collection.
Set<E>	getModifyAdditions()	Return the list of objects added to the list set or map.
BeanCollection.ModifyListenMode	getModifyListening()	Return the current modify listening mode.
BeanCollection.ModifyListenMode	getModifyListenMode()	Return the modify listening mode this collection is using.
Set<E>	getModifyRemovals()	Return the list of objects removed from the list set or map.
EntityBean	getOwnerBean()	Return the bean that owns this collection.
String	getPropertyName()	Return the bean property name this collection represents.
BeanCollection<E>	getShallowCopy()	Return a shallow copy of this collection that is modifiable.
int	hashCode()
boolean	hasModifications()	Return true if the collection is modify listening and has modifications.
boolean	holdsModifications()	Return true if there are underlying additions or removals.
void	internalAdd(Object bean)	Add the bean to the collection.
void	internalAddWithCheck(Object bean)	Add the bean with a check to see if it is already contained.
boolean	isEmpty()	Return true if the List Set or Map is empty.
boolean	isPopulated()	Returns true if the underlying set has its data.
boolean	isReadOnly()	Return true if the collection should be treated as readOnly and no elements can be added or removed etc.
boolean	isReference()	Return true if this is a reference (lazy loading) bean collection.
boolean	isRegisteredWithLoadContext()	Return true if the collection has been registered with the batch loading context.
boolean	isSkipSave()	Return true if the collection is uninitialised or is empty without any held modifications.
Iterator<E>	iterator()
void	loadFrom(BeanCollection<?> other)	Load bean from another collection.
void	modifyAddition(E bean)	Add an object to the additions list.
void	modifyRemoval(Object bean)	Add an object to the deletions list.
void	modifyReset()	Reset the set of additions and deletions.
boolean	remove(Object o)
boolean	removeAll(Collection<?> beans)
void	removeBean(E bean)	Remove a bean to the list/set with modifyListen notification.
void	reset(EntityBean ownerBean, String propertyName)	Reset the collection back to an empty state ready for reloading.
boolean	retainAll(Collection<?> beans)
void	setActualSet(Set<?> set)	Set the underlying set (used for lazy fetch).
void	setDisableLazyLoad(boolean disableLazyLoad)	Set the disableLazyLoad state.
void	setFilterMany(ExpressionList<?> filterMany)	Set the filter that was used in building this collection.
void	setLoader(BeanCollectionLoader loader)	Set the loader that will be used to lazy/query load this collection.
void	setModifyListening(BeanCollection.ModifyListenMode mode)	set modifyListening to be on or off.
void	setReadOnly(boolean readOnly)	Set to true if you want the BeanCollection to be treated as read only.
int	size()	Return the number of elements in the List Set or Map.
Object[]	toArray()
<T> T[]	toArray(T[] a)
String	toString()
boolean	wasTouched()	Has been modified by an addition or removal.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.Set

spliterator

Constructor Details

BeanSet

public BeanSet(Set<E> set)

Create with a specific Set implementation.

BeanSet

public BeanSet()

Create using an underlying LinkedHashSet.

BeanSet

public BeanSet(BeanCollectionLoader loader,
EntityBean ownerBean,
String propertyName)

Method Details

reset

public void reset(EntityBean ownerBean,
String propertyName)

Description copied from interface: BeanCollection

Reset the collection back to an empty state ready for reloading.

This is done as part of bean refresh.

Specified by:

reset in interface BeanCollection<E>

isSkipSave

public boolean isSkipSave()

Description copied from interface: BeanCollection

Return true if the collection is uninitialised or is empty without any held modifications.

Returning true means can safely skip cascade save for this bean collection.

Specified by:

isSkipSave in interface BeanCollection<E>

addEntityBean

public void addEntityBean(EntityBean bean)

Description copied from interface: BeanCollectionAdd

Add a loaded bean to the collection.

Specified by:

addEntityBean in interface BeanCollectionAdd

loadFrom

public void loadFrom(BeanCollection<?> other)

Description copied from interface: BeanCollection

Load bean from another collection.

Specified by:

loadFrom in interface BeanCollection<E>

internalAddWithCheck

public void internalAddWithCheck(Object bean)

Description copied from interface: BeanCollection

Add the bean with a check to see if it is already contained.

Specified by:

internalAddWithCheck in interface BeanCollection<E>

internalAdd

public void internalAdd(Object bean)

Description copied from interface: BeanCollection

Add the bean to the collection. This is disallowed for BeanMap.

Specified by:

internalAdd in interface BeanCollection<E>

isPopulated

public boolean isPopulated()

Returns true if the underlying set has its data.

Specified by:

isPopulated in interface BeanCollection<E>

isReference

public boolean isReference()

Return true if this is a reference (lazy loading) bean collection. This is the same as !isPopulated();

Specified by:

isReference in interface BeanCollection<E>

checkEmptyLazyLoad

public boolean checkEmptyLazyLoad()

Description copied from interface: BeanCollection

Check after the lazy load that the underlying collection is not null (handle case where join to many not outer).

That is, if the collection was not loaded due to filterMany predicates etc then make sure the collection is set to empty.

Specified by:

checkEmptyLazyLoad in interface BeanCollection<E>

setActualSet

public void setActualSet(Set<?> set)

Set the underlying set (used for lazy fetch).

getActualSet

public Set<E> getActualSet()

Return the actual underlying set.

getActualDetails

public Collection<E> getActualDetails()

Description copied from interface: BeanCollection

Returns the underlying collection of beans from the Set, Map or List.

Specified by:

getActualDetails in interface BeanCollection<E>

getActualEntries

public Collection<?> getActualEntries()

Description copied from interface: BeanCollection

Returns the underlying entries so for Maps this is a collection of Map.Entry.

For maps this returns the entrySet as we need the keys of the map.

Specified by:

getActualEntries in interface BeanCollection<E>

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object obj)

Equal if obj is a Set and equal in a Set sense.

Specified by:

equals in interface Collection<E>

Specified by:

equals in interface Set<E>

Overrides:

equals in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<E>

Specified by:

hashCode in interface Set<E>

Overrides:

hashCode in class Object

addBean

public void addBean(E bean)

Description copied from interface: BeanCollection

Add a bean to the list/set with modifyListen notification.

Specified by:

addBean in interface BeanCollection<E>

removeBean

public void removeBean(E bean)

Description copied from interface: BeanCollection

Remove a bean to the list/set with modifyListen notification.

Specified by:

removeBean in interface BeanCollection<E>

add

public boolean add(E o)

Specified by:

add in interface Collection<E>

Specified by:

add in interface Set<E>

addAll

public boolean addAll(Collection<? extends E> addCollection)

Specified by:

addAll in interface Collection<E>

Specified by:

addAll in interface Set<E>

clear

public void clear()

Specified by:

clear in interface Collection<E>

Specified by:

clear in interface Set<E>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<E>

Specified by:

contains in interface Set<E>

containsAll

public boolean containsAll(Collection<?> c)

Specified by:

containsAll in interface Collection<E>

Specified by:

containsAll in interface Set<E>

isEmpty

public boolean isEmpty()

Description copied from interface: BeanCollection

Return true if the List Set or Map is empty.

Specified by:

isEmpty in interface BeanCollection<E>

Specified by:

isEmpty in interface Collection<E>

Specified by:

isEmpty in interface Set<E>

iterator

public Iterator<E> iterator()

Specified by:

iterator in interface Collection<E>

Specified by:

iterator in interface Iterable<E>

Specified by:

iterator in interface Set<E>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<E>

Specified by:

remove in interface Set<E>

removeAll

public boolean removeAll(Collection<?> beans)

Specified by:

removeAll in interface Collection<E>

Specified by:

removeAll in interface Set<E>

retainAll

public boolean retainAll(Collection<?> beans)

Specified by:

retainAll in interface Collection<E>

Specified by:

retainAll in interface Set<E>

size

public int size()

Description copied from interface: BeanCollection

Return the number of elements in the List Set or Map.

Specified by:

size in interface BeanCollection<E>

Specified by:

size in interface Collection<E>

Specified by:

size in interface Set<E>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<E>

Specified by:

toArray in interface Set<E>

toArray

public <T> T[] toArray(T[] a)

Specified by:

toArray in interface Collection<E>

Specified by:

toArray in interface Set<E>

getShallowCopy

public BeanCollection<E> getShallowCopy()

Description copied from interface: BeanCollection

Return a shallow copy of this collection that is modifiable.

Specified by:

getShallowCopy in interface BeanCollection<E>

getOwnerBean

public EntityBean getOwnerBean()

Description copied from interface: BeanCollection

Return the bean that owns this collection.

Specified by:

getOwnerBean in interface BeanCollection<E>

getPropertyName

public String getPropertyName()

Description copied from interface: BeanCollection

Return the bean property name this collection represents.

Specified by:

getPropertyName in interface BeanCollection<E>

getFilterMany

public ExpressionList<?> getFilterMany()

Description copied from interface: BeanCollection

Return the filter (if any) that was used in building this collection.

This is so that the filter can be applied on refresh.

Specified by:

getFilterMany in interface BeanCollection<E>

setFilterMany

public void setFilterMany(ExpressionList<?> filterMany)

Description copied from interface: BeanCollection

Set the filter that was used in building this collection.

Specified by:

setFilterMany in interface BeanCollection<E>

setDisableLazyLoad

public void setDisableLazyLoad(boolean disableLazyLoad)

Description copied from interface: BeanCollection

Set the disableLazyLoad state.

Specified by:

setDisableLazyLoad in interface BeanCollection<E>

isRegisteredWithLoadContext

public boolean isRegisteredWithLoadContext()

Description copied from interface: BeanCollection

Return true if the collection has been registered with the batch loading context.

Specified by:

isRegisteredWithLoadContext in interface BeanCollection<E>

setLoader

public void setLoader(BeanCollectionLoader loader)

Description copied from interface: BeanCollection

Set the loader that will be used to lazy/query load this collection.

This is effectively the batch loading context this collection is registered with.

Specified by:

setLoader in interface BeanCollection<E>

isReadOnly

public boolean isReadOnly()

Description copied from interface: BeanCollection

Return true if the collection should be treated as readOnly and no elements can be added or removed etc.

Specified by:

isReadOnly in interface BeanCollection<E>

setReadOnly

public void setReadOnly(boolean readOnly)

Description copied from interface: BeanCollection

Set to true if you want the BeanCollection to be treated as read only. This means no elements can be added or removed etc.

Specified by:

setReadOnly in interface BeanCollection<E>

hasModifications

public boolean hasModifications()

Description copied from interface: BeanCollection

Return true if the collection is modify listening and has modifications.

Specified by:

hasModifications in interface BeanCollection<E>

getModifyListening

public BeanCollection.ModifyListenMode getModifyListening()

Description copied from interface: BeanCollection

Return the current modify listening mode. Can be null for on newly created beans.

Specified by:

getModifyListening in interface BeanCollection<E>

setModifyListening

public void setModifyListening(BeanCollection.ModifyListenMode mode)

set modifyListening to be on or off.

Specified by:

setModifyListening in interface BeanCollection<E>

getModifyListenMode

public BeanCollection.ModifyListenMode getModifyListenMode()

Return the modify listening mode this collection is using.

modifyAddition

public void modifyAddition(E bean)

Description copied from interface: BeanCollection

Add an object to the additions list.

This will potentially end up as an insert into a intersection table for a ManyToMany.

Specified by:

modifyAddition in interface BeanCollection<E>

modifyRemoval

public void modifyRemoval(Object bean)

Description copied from interface: BeanCollection

Add an object to the deletions list.

This will potentially end up as an delete from an intersection table for a ManyToMany.

Specified by:

modifyRemoval in interface BeanCollection<E>

modifyReset

public void modifyReset()

Description copied from interface: BeanCollection

Reset the set of additions and deletions. This is called after the additions and removals have been processed.

Specified by:

modifyReset in interface BeanCollection<E>

getModifyAdditions

public Set<E> getModifyAdditions()

Description copied from interface: BeanCollection

Return the list of objects added to the list set or map. These will used to insert rows into the intersection table of a ManyToMany.

Specified by:

getModifyAdditions in interface BeanCollection<E>

getModifyRemovals

public Set<E> getModifyRemovals()

Description copied from interface: BeanCollection

Return the list of objects removed from the list set or map. These will used to delete rows from the intersection table of a ManyToMany.

Specified by:

getModifyRemovals in interface BeanCollection<E>

holdsModifications

public boolean holdsModifications()

Return true if there are underlying additions or removals.

Specified by:

holdsModifications in interface BeanCollection<E>

wasTouched

public boolean wasTouched()

Description copied from interface: BeanCollection

Has been modified by an addition or removal.

Specified by:

wasTouched in interface BeanCollection<E>