Package one.microstream.collections.lazy

Class LazyHashMap.Segment<E extends LazyHashMap.Entry<K,V>>

java.lang.Object

one.microstream.collections.lazy.LazyHashMap.Segment<E>

All Implemented Interfaces:

LazySegment<LazyHashMap.LazyHashMapSegmentEntryList<K,V>>, LazyClearController

Enclosing class:

LazyHashMap<K,V>

public final class LazyHashMap.Segment<E extends LazyHashMap.Entry<K,V>>
extends Object
implements LazyClearController, LazySegment<LazyHashMap.LazyHashMapSegmentEntryList<K,V>>

Method Summary

Modifier and Type	Method	Description
boolean	allowClear()	Allow or deny clearing a lazy reference.
void	allowUnload(boolean allow)
int	compareHash(int hash)	Compares the supplied hash to with the segments min and max properties.
LazyHashMap.Entry<K,V>	getByHash(int hash, Object key)	Search for an entry by its keys hash and value.
LazyHashMap.LazyHashMapSegmentEntryList<K,V>	getData()
boolean	isLoaded()	Check if the lazy loaded data of this segment has been loaded.
boolean	isModified()	Check if this segment has modifications that are not yet persisted.
int	size()	get the number of contained element in this segment.
String	toString()	Returns the string representation of this segment.
boolean	unloadAllowed()
void	unloadSegment()	Unload the lazy data of this segment

Methods inherited from class java.lang.Object

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

Method Details

size

public int size()

Description copied from interface: LazySegment

get the number of contained element in this segment.

Specified by:

size in interface LazySegment<E extends LazyHashMap.Entry<K,V>>

Returns:

number of contained elements;

isLoaded

public boolean isLoaded()

Description copied from interface: LazySegment

Check if the lazy loaded data of this segment has been loaded.

Specified by:

isLoaded in interface LazySegment<E extends LazyHashMap.Entry<K,V>>

Returns:

true if loaded, otherwise false.

isModified

public boolean isModified()

Description copied from interface: LazySegment

Check if this segment has modifications that are not yet persisted.

Specified by:

isModified in interface LazySegment<E extends LazyHashMap.Entry<K,V>>

Returns:

true if there are modifications not yet persisted, otherwise false.

unloadSegment

public void unloadSegment()

Description copied from interface: LazySegment

Unload the lazy data of this segment

Specified by:

unloadSegment in interface LazySegment<E extends LazyHashMap.Entry<K,V>>

getData

public LazyHashMap.LazyHashMapSegmentEntryList<K,V> getData()

Specified by:

getData in interface LazySegment<E extends LazyHashMap.Entry<K,V>>

compareHash

public int compareHash(int hash)

Compares the supplied hash to with the segments min and max properties.

Parameters:

hash - to be compared with.

Returns:

hash < 0: -1
hash >= max: 1
min < hash < max: 0.

getByHash

public LazyHashMap.Entry<K,V> getByHash(int hash, Object key)

Search for an entry by its keys hash and value.

Parameters:

hash - the key hash

key - the key value

Returns:

found entry or null

allowClear

public boolean allowClear()

Description copied from interface: LazyClearController

Allow or deny clearing a lazy reference.

Specified by:

allowClear in interface LazyClearController

Returns:

true if clearing the lazy reference is allowed, otherwise false.

toString

public String toString()

Returns the string representation of this segment. Key-value pairs will be coded as 'key'='value'. If the segment is unloaded it will not get loaded, the key-value pairs stored in an unloaded segment will not be included in the returned string. Instead, it just reports the number of unloaded elements.

Overrides:

toString in class Object

Returns:

a string representation of this segment.

allowUnload

public void allowUnload(boolean allow)

Specified by:

allowUnload in interface LazySegment<E extends LazyHashMap.Entry<K,V>>

unloadAllowed

public boolean unloadAllowed()

Specified by:

unloadAllowed in interface LazySegment<E extends LazyHashMap.Entry<K,V>>