Package com.sleepycat.collections

Class StoredSortedMap<K,V>

java.lang.Object

com.sleepycat.collections.StoredContainer

com.sleepycat.collections.StoredMap<K,V>

com.sleepycat.collections.StoredSortedMap<K,V>

All Implemented Interfaces:

Cloneable, ConcurrentMap<K,V>, Map<K,V>, SequencedMap<K,V>, SortedMap<K,V>

public class StoredSortedMap<K,V>
extends StoredMap<K,V>
implements SortedMap<K,V>

A SortedMap view of a Database.

In addition to the standard SortedMap methods, this class provides the following methods for stored sorted maps only. Note that the use of these methods is not compatible with the standard Java collections interface.

• headMap(Object, boolean)
• tailMap(Object, boolean)
• subMap(Object, boolean, Object, boolean)

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor	Description
StoredSortedMap(Database database, EntryBinding<K> keyBinding, EntityBinding<V> valueEntityBinding, boolean writeAllowed)	Creates a sorted map entity view of a Database.
StoredSortedMap(Database database, EntryBinding<K> keyBinding, EntityBinding<V> valueEntityBinding, PrimaryKeyAssigner keyAssigner)	Creates a sorted map entity view of a Database with a PrimaryKeyAssigner.
StoredSortedMap(Database database, EntryBinding<K> keyBinding, EntryBinding<V> valueBinding, boolean writeAllowed)	Creates a sorted map view of a Database.
StoredSortedMap(Database database, EntryBinding<K> keyBinding, EntryBinding<V> valueBinding, PrimaryKeyAssigner keyAssigner)	Creates a sorted map view of a Database with a PrimaryKeyAssigner.

Method Summary

Modifier and Type	Method	Description
Comparator<? super K>	comparator()	Returns null since comparators are not supported.
K	firstKey()	Returns the first (lowest) key currently in this sorted map.
SortedMap<K,V>	headMap(K toKey)	Returns a view of the portion of this sorted set whose keys are strictly less than toKey.
SortedMap<K,V>	headMap(K toKey, boolean toInclusive)	Returns a view of the portion of this sorted map whose elements are strictly less than toKey, optionally including toKey.
K	lastKey()	Returns the last (highest) element currently in this sorted map.
SortedMap<K,V>	subMap(K fromKey, boolean fromInclusive, K toKey, boolean toInclusive)	Returns a view of the portion of this sorted map whose elements are strictly greater than fromKey and strictly less than toKey, optionally including fromKey and toKey.
SortedMap<K,V>	subMap(K fromKey, K toKey)	Returns a view of the portion of this sorted map whose elements range from fromKey, inclusive, to toKey, exclusive.
SortedMap<K,V>	tailMap(K fromKey)	Returns a view of the portion of this sorted map whose elements are greater than or equal to fromKey.
SortedMap<K,V>	tailMap(K fromKey, boolean fromInclusive)	Returns a view of the portion of this sorted map whose elements are strictly greater than fromKey, optionally including fromKey.

Methods inherited from class com.sleepycat.collections.StoredMap

append, containsKey, containsValue, duplicates, duplicatesMap, entrySet, equals, get, hashCode, keySet, put, putAll, putIfAbsent, remove, remove, replace, replace, size, toString, values

Methods inherited from class com.sleepycat.collections.StoredContainer

areDuplicatesAllowed, areDuplicatesOrdered, areKeyRangesAllowed, areKeysRenumbered, clear, getCursorConfig, isEmpty, isOrdered, isSecondary, isTransactional, isWriteAllowed

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.concurrent.ConcurrentMap

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, replaceAll

Methods inherited from interface java.util.Map

clear, containsKey, containsValue, equals, get, hashCode, isEmpty, put, putAll, remove, size

Methods inherited from interface java.util.SequencedMap

firstEntry, lastEntry, pollFirstEntry, pollLastEntry, sequencedEntrySet, sequencedKeySet, sequencedValues

Methods inherited from interface java.util.SortedMap

entrySet, keySet, putFirst, putLast, reversed, values

Constructor Details

StoredSortedMap

public StoredSortedMap(Database database,
 EntryBinding<K> keyBinding,
 EntryBinding<V> valueBinding,
 boolean writeAllowed)

Creates a sorted map view of a Database.

Parameters:

database - is the Database underlying the new collection.

keyBinding - is the binding used to translate between key buffers and key objects.

valueBinding - is the binding used to translate between value buffers and value objects.

writeAllowed - is true to create a read-write collection or false to create a read-only collection.

Throws:

IllegalArgumentException - if formats are not consistently defined or a parameter is invalid.

RuntimeExceptionWrapper - if a checked exception is thrown, including a DatabaseException on BDB (C edition).

StoredSortedMap

public StoredSortedMap(Database database,
 EntryBinding<K> keyBinding,
 EntryBinding<V> valueBinding,
 PrimaryKeyAssigner keyAssigner)

Creates a sorted map view of a Database with a PrimaryKeyAssigner. Writing is allowed for the created map.

Parameters:

database - is the Database underlying the new collection.

keyBinding - is the binding used to translate between key buffers and key objects.

valueBinding - is the binding used to translate between value buffers and value objects.

keyAssigner - is used by the StoredMap.append(V) method to assign primary keys.

Throws:

IllegalArgumentException - if formats are not consistently defined or a parameter is invalid.

RuntimeExceptionWrapper - if a checked exception is thrown, including a DatabaseException on BDB (C edition).

StoredSortedMap

public StoredSortedMap(Database database,
 EntryBinding<K> keyBinding,
 EntityBinding<V> valueEntityBinding,
 boolean writeAllowed)

Creates a sorted map entity view of a Database.

Parameters:

database - is the Database underlying the new collection.

keyBinding - is the binding used to translate between key buffers and key objects.

valueEntityBinding - is the binding used to translate between key/value buffers and entity value objects.

writeAllowed - is true to create a read-write collection or false to create a read-only collection.

Throws:

IllegalArgumentException - if formats are not consistently defined or a parameter is invalid.

RuntimeExceptionWrapper - if a checked exception is thrown, including a DatabaseException on BDB (C edition).

StoredSortedMap

public StoredSortedMap(Database database,
 EntryBinding<K> keyBinding,
 EntityBinding<V> valueEntityBinding,
 PrimaryKeyAssigner keyAssigner)

Creates a sorted map entity view of a Database with a PrimaryKeyAssigner. Writing is allowed for the created map.

Parameters:

database - is the Database underlying the new collection.

keyBinding - is the binding used to translate between key buffers and key objects.

valueEntityBinding - is the binding used to translate between key/value buffers and entity value objects.

keyAssigner - is used by the StoredMap.append(V) method to assign primary keys.

Throws:

IllegalArgumentException - if formats are not consistently defined or a parameter is invalid.

RuntimeExceptionWrapper - if a checked exception is thrown, including a DatabaseException on BDB (C edition).

Method Details

comparator

public Comparator<? super K> comparator()

Returns null since comparators are not supported. The natural ordering of a stored collection is data byte order, whether the data classes implement the Comparable interface or not. This method does not conform to the SortedMap.comparator() interface.

Specified by:

comparator in interface SortedMap<K,V>

Returns:

null.

firstKey

public K firstKey()

Returns the first (lowest) key currently in this sorted map. This method conforms to the SortedMap.firstKey() interface.

Specified by:

firstKey in interface SortedMap<K,V>

Returns:

the first key.

Throws:

RuntimeExceptionWrapper - if a checked exception is thrown, including a DatabaseException on BDB (C edition).

lastKey

public K lastKey()

Returns the last (highest) element currently in this sorted map. This method conforms to the SortedMap.lastKey() interface.

Specified by:

lastKey in interface SortedMap<K,V>

Returns:

the last key.

Throws:

RuntimeExceptionWrapper - if a checked exception is thrown, including a DatabaseException on BDB (C edition).

headMap

public SortedMap<K,V> headMap(K toKey)

Returns a view of the portion of this sorted set whose keys are strictly less than toKey. This method conforms to the SortedMap.headMap(K) interface.

Note that the return value is a StoredStoredMap and must be treated as such; for example, its iterators must be explicitly closed.

Specified by:

headMap in interface SortedMap<K,V>

Parameters:

toKey - is the upper bound.

Returns:

the submap.

Throws:

RuntimeExceptionWrapper - if a checked exception is thrown, including a DatabaseException on BDB (C edition).

headMap

public SortedMap<K,V> headMap(K toKey,
 boolean toInclusive)

Returns a view of the portion of this sorted map whose elements are strictly less than toKey, optionally including toKey. This method does not exist in the standard SortedMap interface.

Note that the return value is a StoredStoredMap and must be treated as such; for example, its iterators must be explicitly closed.

Parameters:

toKey - is the upper bound.

toInclusive - is true to include toKey.

Returns:

the submap.

Throws:

RuntimeExceptionWrapper - if a checked exception is thrown, including a DatabaseException on BDB (C edition).

tailMap

public SortedMap<K,V> tailMap(K fromKey)

Returns a view of the portion of this sorted map whose elements are greater than or equal to fromKey. This method conforms to the SortedMap.tailMap(K) interface.

Note that the return value is a StoredStoredMap and must be treated as such; for example, its iterators must be explicitly closed.

Specified by:

tailMap in interface SortedMap<K,V>

Parameters:

fromKey - is the lower bound.

Returns:

the submap.

Throws:

RuntimeExceptionWrapper - if a checked exception is thrown, including a DatabaseException on BDB (C edition).

tailMap

public SortedMap<K,V> tailMap(K fromKey,
 boolean fromInclusive)

Returns a view of the portion of this sorted map whose elements are strictly greater than fromKey, optionally including fromKey. This method does not exist in the standard SortedMap interface.

Note that the return value is a StoredStoredMap and must be treated as such; for example, its iterators must be explicitly closed.

Parameters:

fromKey - is the lower bound.

fromInclusive - is true to include fromKey.

Returns:

the submap.

Throws:

RuntimeExceptionWrapper - if a checked exception is thrown, including a DatabaseException on BDB (C edition).

subMap

public SortedMap<K,V> subMap(K fromKey,
 K toKey)

Returns a view of the portion of this sorted map whose elements range from fromKey, inclusive, to toKey, exclusive. This method conforms to the SortedMap.subMap(K, K) interface.

Note that the return value is a StoredStoredMap and must be treated as such; for example, its iterators must be explicitly closed.

Specified by:

subMap in interface SortedMap<K,V>

Parameters:

fromKey - is the lower bound.

toKey - is the upper bound.

Returns:

the submap.

Throws:

RuntimeExceptionWrapper - if a checked exception is thrown, including a DatabaseException on BDB (C edition).

subMap

public SortedMap<K,V> subMap(K fromKey,
 boolean fromInclusive,
 K toKey,
 boolean toInclusive)

Returns a view of the portion of this sorted map whose elements are strictly greater than fromKey and strictly less than toKey, optionally including fromKey and toKey. This method does not exist in the standard SortedMap interface.

Note that the return value is a StoredStoredMap and must be treated as such; for example, its iterators must be explicitly closed.

Parameters:

fromKey - is the lower bound.

fromInclusive - is true to include fromKey.

toKey - is the upper bound.

toInclusive - is true to include toKey.

Returns:

the submap.

Throws:

RuntimeExceptionWrapper - if a checked exception is thrown, including a DatabaseException on BDB (C edition).