Class SortedMap<K,V>
java.lang.Object
java.util.AbstractMap<K,V>
org.datanucleus.store.types.wrappers.SortedMap<K,V>
- All Implemented Interfaces:
Serializable
,Cloneable
,Map<K,
,V> SortedMap<K,
,V> SCO<SortedMap<K,
,V>> SCOContainer<SortedMap<K,
,V>> SCOMap<SortedMap<K,
V>, K, V>
- Direct Known Subclasses:
SortedMap
public class SortedMap<K,V>
extends AbstractMap<K,V>
implements SortedMap<K,V>, SCOMap<SortedMap<K,V>,K,V>, Cloneable, Serializable
A mutable second-class SortedMap object.
This is the simplified form that intercepts mutators and marks the field as dirty.
It also handles cascade-delete triggering for persistable elements.
- See Also:
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Nested Class Summary
Nested classes/interfaces inherited from class java.util.AbstractMap
AbstractMap.SimpleEntry<K,
V>, AbstractMap.SimpleImmutableEntry<K, V> -
Field Summary
FieldsModifier and TypeFieldDescriptionThe internal "delegate".protected AbstractMemberMetaData
protected DNStateManager
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoid
attachCopy
(SortedMap value) Method to return an attached copy of the passed (detached) value.void
clear()
Method to clear the SortedMap.clone()
Creates and returns a copy of this object.Accessor for the comparator.boolean
containsKey
(Object key) Method to return if the map contains this keyboolean
containsValue
(Object value) Method to return if the map contains this value.detachCopy
(FetchPlanState state) Method to return a detached copy of the container.entrySet()
Accessor for the set of entries in the Map.boolean
Method to check the equality of this map, and another.firstKey()
Accessor for the first key in the sorted map.void
forEach
(BiConsumer<? super K, ? super V> action) Accessor for the value stored against a key.Accessor for the field name that this SortedMap relates to.getOwner()
Accessor for the owner that this SortedMap relates to.getValue()
Accessor for the unwrapped value that we are wrapping.int
hashCode()
Method to generate a hashcode for this Map.Method to retrieve the head of the map up to the specified key.void
Method to initialise the SCO for use, and allowing the SCO to be loaded from the datastore (when we have a backing store).void
Method to initialise the SCO for use with the provided initial value.void
initialise
(SortedMap newValue, Object oldValue) Method to initialise the SCO for use, where replacing an old value with a new value such as when calling a setter field passing in a new value.protected void
Convenience method to set up the delegate respecting any comparator specified in MetaData.boolean
isEmpty()
Method to return if the Map is empty.boolean
isLoaded()
Method to return if the SCO has its contents loaded.keySet()
Accessor for the set of keys in the Map.lastKey()
Accessor for the last key in the sorted map.void
load()
Method to effect the load of the data in the SCO.void
Utility to mark the object as dirtyMethod to add a value against a key to the SortedMap.void
Method to add the specified Map's values under their keys here.Method to remove the value for a key from the SortedMap.void
Method to change the delegate value this wraps (to save recreating the wrapper).int
size()
Method to return the size of the Map.Method to retrieve the subset of the map between the specified keys.Method to retrieve the part of the map after the specified key.void
Method to unset the owner and field details.void
updateEmbeddedKey
(K key, int fieldNumber, Object newValue, boolean makeDirty) Method to update an embedded key in this map.void
updateEmbeddedValue
(V value, int fieldNumber, Object newValue, boolean makeDirty) Method to update an embedded value in this map.values()
Accessor for the set of values in the Map.protected Object
The writeReplace method is called when ObjectOutputStream is preparing to write the object to the stream.Methods inherited from class java.util.AbstractMap
toString
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
Methods inherited from interface java.util.Map
compute, computeIfAbsent, computeIfPresent, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll
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Field Details
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ownerSM
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ownerMmd
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delegate
The internal "delegate".
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Constructor Details
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SortedMap
Constructor- Parameters:
sm
- the owner StateManagermmd
- Metadata for the member
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Method Details
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initialise
Description copied from interface:SCO
Method to initialise the SCO for use, where replacing an old value with a new value such as when calling a setter field passing in a new value. Note that oldValue is marked as Object since for cases where the member type is Collection the newValue could be, for example, ArrayList, and the oldValue of type Collection (representing null).- Specified by:
initialise
in interfaceSCO<K>
- Parameters:
newValue
- New value (to wrap)oldValue
- Old value (to use in deciding what needs deleting etc)
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initialise
Description copied from interface:SCO
Method to initialise the SCO for use with the provided initial value. This is used, for example, when retrieving the field from the datastore and setting it in the persistable object.- Specified by:
initialise
in interfaceSCO<K>
- Parameters:
m
- the object from which to copy the value.
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initialise
public void initialise()Description copied from interface:SCO
Method to initialise the SCO for use, and allowing the SCO to be loaded from the datastore (when we have a backing store). This can be utilised to perform any eager loading of information from the datastore.- Specified by:
initialise
in interfaceSCO<K>
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initialiseDelegate
protected void initialiseDelegate()Convenience method to set up the delegate respecting any comparator specified in MetaData. -
getValue
Accessor for the unwrapped value that we are wrapping. -
setValue
Description copied from interface:SCOContainer
Method to change the delegate value this wraps (to save recreating the wrapper).- Specified by:
setValue
in interfaceSCOContainer<K>
- Parameters:
value
- The new value
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load
public void load()Method to effect the load of the data in the SCO. Used when the SCO supports lazy-loading to tell it to load all now.- Specified by:
load
in interfaceSCOContainer<K>
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isLoaded
public boolean isLoaded()Method to return if the SCO has its contents loaded. Returns true.- Specified by:
isLoaded
in interfaceSCOContainer<K>
- Returns:
- Whether it is loaded
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updateEmbeddedKey
Method to update an embedded key in this map. -
updateEmbeddedValue
Method to update an embedded value in this map. -
getFieldName
Accessor for the field name that this SortedMap relates to.- Specified by:
getFieldName
in interfaceSCO<K>
- Returns:
- The field name
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getOwner
Accessor for the owner that this SortedMap relates to. -
unsetOwner
public void unsetOwner()Method to unset the owner and field details.- Specified by:
unsetOwner
in interfaceSCO<K>
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makeDirty
public void makeDirty()Utility to mark the object as dirty -
detachCopy
Method to return a detached copy of the container. Recurse sthrough the keys/values so that they are likewise detached.- Specified by:
detachCopy
in interfaceSCO<K>
- Parameters:
state
- State for detachment state- Returns:
- The detached container
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attachCopy
Method to return an attached copy of the passed (detached) value. The returned attached copy is a SCO wrapper. Goes through the existing keys/values in the store for this owner field and removes ones no longer present, and adds new keys/values. All keys/values in the (detached) value are attached.- Specified by:
attachCopy
in interfaceSCO<K>
- Parameters:
value
- The new (map) value
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clone
Creates and returns a copy of this object.Mutable second-class Objects are required to provide a public clone method in order to allow for copying persistable objects. In contrast to Object.clone(), this method must not throw a CloneNotSupportedException.
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comparator
Accessor for the comparator.- Specified by:
comparator
in interfaceSortedMap<K,
V> - Returns:
- The comparator
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containsKey
Method to return if the map contains this key- Specified by:
containsKey
in interfaceMap<K,
V> - Overrides:
containsKey
in classAbstractMap<K,
V> - Parameters:
key
- The key- Returns:
- Whether it is contained
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containsValue
Method to return if the map contains this value.- Specified by:
containsValue
in interfaceMap<K,
V> - Overrides:
containsValue
in classAbstractMap<K,
V> - Parameters:
value
- The value- Returns:
- Whether it is contained
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entrySet
Accessor for the set of entries in the Map. -
equals
Method to check the equality of this map, and another. -
firstKey
Accessor for the first key in the sorted map. -
forEach
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lastKey
Accessor for the last key in the sorted map. -
headMap
Method to retrieve the head of the map up to the specified key. -
subMap
Method to retrieve the subset of the map between the specified keys. -
tailMap
Method to retrieve the part of the map after the specified key. -
get
Accessor for the value stored against a key. -
hashCode
public int hashCode()Method to generate a hashcode for this Map. -
isEmpty
public boolean isEmpty()Method to return if the Map is empty. -
keySet
Accessor for the set of keys in the Map. -
size
public int size()Method to return the size of the Map. -
values
Accessor for the set of values in the Map. -
clear
public void clear()Method to clear the SortedMap. -
put
Method to add a value against a key to the SortedMap. -
putAll
Method to add the specified Map's values under their keys here. -
remove
Method to remove the value for a key from the SortedMap. -
writeReplace
The writeReplace method is called when ObjectOutputStream is preparing to write the object to the stream. The ObjectOutputStream checks whether the class defines the writeReplace method. If the method is defined, the writeReplace method is called to allow the object to designate its replacement in the stream. The object returned should be either of the same type as the object passed in or an object that when read and resolved will result in an object of a type that is compatible with all references to the object.- Returns:
- the replaced object
- Throws:
ObjectStreamException
- if an error occurs
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