Package com.sleepycat.collections

Class StoredList<E>

java.lang.Object

com.sleepycat.collections.StoredContainer

com.sleepycat.collections.StoredCollection<E>

com.sleepycat.collections.StoredList<E>

All Implemented Interfaces:

Cloneable, Iterable<E>, Collection<E>, List<E>, SequencedCollection<E>

public class StoredList<E>
extends StoredCollection<E>
implements List<E>

A List view of a Database.

For all stored lists the keys of the underlying Database must have record number format, and therefore the store or index must be a RECNO, RECNO-RENUMBER, QUEUE, or BTREE-RECNUM database. Only RECNO-RENUMBER allows true list behavior where record numbers are renumbered following the position of an element that is added or removed. For the other access methods (RECNO, QUEUE, and BTREE-RECNUM), stored Lists are most useful as read-only collections where record numbers are not required to be sequential.

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

• append(Object)

Field Summary

Fields inherited from class com.sleepycat.collections.StoredCollection

DEFAULT_ITERATOR_BLOCK_SIZE

Constructor Summary

Constructors

Constructor	Description
StoredList(Database database, EntityBinding<E> valueEntityBinding, boolean writeAllowed)	Creates a list entity view of a Database.
StoredList(Database database, EntityBinding<E> valueEntityBinding, PrimaryKeyAssigner keyAssigner)	Creates a list entity view of a Database with a PrimaryKeyAssigner.
StoredList(Database database, EntryBinding<E> valueBinding, boolean writeAllowed)	Creates a list view of a Database.
StoredList(Database database, EntryBinding<E> valueBinding, PrimaryKeyAssigner keyAssigner)	Creates a list view of a Database with a PrimaryKeyAssigner.

Method Summary

Modifier and Type	Method	Description
void	add(int index, E value)	Inserts the specified element at the specified position in this list (optional operation).
boolean	add(E value)	Appends the specified element to the end of this list (optional operation).
boolean	addAll(int index, Collection<? extends E> coll)	Inserts all of the elements in the specified collection into this list at the specified position (optional operation).
int	append(E value)	Appends a given value returning the newly assigned index.
boolean	contains(Object value)	Returns true if this list contains the specified element.
boolean	equals(Object other)	Compares the specified object with this list for equality.
E	get(int index)	Returns the element at the specified position in this list.
int	hashCode()
int	indexOf(Object value)	Returns the index in this list of the first occurrence of the specified element, or -1 if this list does not contain this element.
int	lastIndexOf(Object value)	Returns the index in this list of the last occurrence of the specified element, or -1 if this list does not contain this element.
ListIterator<E>	listIterator()	Returns a list iterator of the elements in this list (in proper sequence).
ListIterator<E>	listIterator(int index)	Returns a list iterator of the elements in this list (in proper sequence), starting at the specified position in this list.
E	remove(int index)	Removes the element at the specified position in this list (optional operation).
boolean	remove(Object value)	Removes the first occurrence in this list of the specified element (optional operation).
E	set(int index, E value)	Replaces the element at the specified position in this list with the specified element (optional operation).
List<E>	subList(int fromIndex, int toIndex)	Returns a view of the portion of this list between the specified fromIndex, inclusive, and toIndex, exclusive.

Methods inherited from class com.sleepycat.collections.StoredCollection

addAll, containsAll, getIteratorBlockSize, iterator, iterator, join, removeAll, retainAll, setIteratorBlockSize, size, storedIterator, storedIterator, toArray, toArray, toList, toString

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.Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.List

addAll, addFirst, addLast, clear, containsAll, getFirst, getLast, isEmpty, iterator, removeAll, removeFirst, removeLast, replaceAll, retainAll, reversed, size, sort, spliterator, toArray, toArray

Constructor Details

StoredList

public StoredList(Database database,
 EntryBinding<E> valueBinding,
 boolean writeAllowed)

Creates a list view of a Database.

Parameters:

database - is the Database underlying the new collection.

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).

StoredList

public StoredList(Database database,
 EntityBinding<E> valueEntityBinding,
 boolean writeAllowed)

Creates a list entity view of a Database.

Parameters:

database - is the Database underlying the new collection.

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).

StoredList

public StoredList(Database database,
 EntryBinding<E> valueBinding,
 PrimaryKeyAssigner keyAssigner)

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

Parameters:

database - is the Database underlying the new collection.

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

keyAssigner - is used by the add(int, E) and append(E) methods 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).

StoredList

public StoredList(Database database,
 EntityBinding<E> valueEntityBinding,
 PrimaryKeyAssigner keyAssigner)

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

Parameters:

database - is the Database underlying the new collection.

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

keyAssigner - is used by the add(int, E) and append(E) methods 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

add

public void add(int index,
 E value)

Inserts the specified element at the specified position in this list (optional operation). This method conforms to the List.add(int, Object) interface.

Specified by:

add in interface List<E>

Throws:

UnsupportedOperationException - if the collection is a sublist, or if the collection is indexed, or if the collection is read-only, or if the RECNO-RENUMBER access method was not used.

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

add

public boolean add(E value)

Appends the specified element to the end of this list (optional operation). This method conforms to the List.add(Object) interface.

Specified by:

add in interface Collection<E>

Specified by:

add in interface List<E>

Throws:

UnsupportedOperationException - if the collection is a sublist, or if the collection is indexed, or if the collection is read-only, or if the RECNO-RENUMBER access method was not used.

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

append

public int append(E value)

Appends a given value returning the newly assigned index. If a PrimaryKeyAssigner is associated with Store for this list, it will be used to assigned the returned index. Otherwise the Store must be a QUEUE or RECNO database and the next available record number is assigned as the index. This method does not exist in the standard List interface.

Parameters:

value - the value to be appended.

Returns:

the assigned index.

Throws:

UnsupportedOperationException - if the collection is indexed, or if the collection is read-only, or if the Store has no PrimaryKeyAssigner and is not a QUEUE or RECNO database.

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

addAll

public boolean addAll(int index,
 Collection<? extends E> coll)

Inserts all of the elements in the specified collection into this list at the specified position (optional operation). This method conforms to the List.addAll(int, Collection) interface.

Specified by:

addAll in interface List<E>

Throws:

UnsupportedOperationException - if the collection is a sublist, or if the collection is indexed, or if the collection is read-only, or if the RECNO-RENUMBER access method was not used.

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

contains

public boolean contains(Object value)

Returns true if this list contains the specified element. This method conforms to the List.contains(java.lang.Object) interface.

Specified by:

contains in interface Collection<E>

Specified by:

contains in interface List<E>

Throws:

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

get

public E get(int index)

Returns the element at the specified position in this list. This method conforms to the List.get(int) interface.

Specified by:

get in interface List<E>

Throws:

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

indexOf

public int indexOf(Object value)

Returns the index in this list of the first occurrence of the specified element, or -1 if this list does not contain this element. This method conforms to the List.indexOf(java.lang.Object) interface.

Specified by:

indexOf in interface List<E>

Throws:

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

lastIndexOf

public int lastIndexOf(Object value)

Returns the index in this list of the last occurrence of the specified element, or -1 if this list does not contain this element. This method conforms to the List.lastIndexOf(java.lang.Object) interface.

Specified by:

lastIndexOf in interface List<E>

Throws:

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

listIterator

public ListIterator<E> listIterator()

Returns a list iterator of the elements in this list (in proper sequence). The iterator will be read-only if the collection is read-only. This method conforms to the List.listIterator() interface.

For information on cursor stability and iterator block size, see StoredCollection.iterator().

Specified by:

listIterator in interface List<E>

Returns:

a ListIterator for this collection.

Throws:

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

See Also:

• StoredContainer.isWriteAllowed()

listIterator

public ListIterator<E> listIterator(int index)

Returns a list iterator of the elements in this list (in proper sequence), starting at the specified position in this list. The iterator will be read-only if the collection is read-only. This method conforms to the List.listIterator(int) interface.

For information on cursor stability and iterator block size, see StoredCollection.iterator().

Specified by:

listIterator in interface List<E>

Returns:

a ListIterator for this collection.

Throws:

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

See Also:

• StoredContainer.isWriteAllowed()

remove

public E remove(int index)

Removes the element at the specified position in this list (optional operation). This method conforms to the List.remove(int) interface.

Specified by:

remove in interface List<E>

Throws:

UnsupportedOperationException - if the collection is a sublist, or if the collection is read-only.

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

remove

public boolean remove(Object value)

Removes the first occurrence in this list of the specified element (optional operation). This method conforms to the List.remove(Object) interface.

Specified by:

remove in interface Collection<E>

Specified by:

remove in interface List<E>

Throws:

UnsupportedOperationException - if the collection is a sublist, or if the collection is read-only.

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

set

public E set(int index,
 E value)

Replaces the element at the specified position in this list with the specified element (optional operation). This method conforms to the List.set(int, E) interface.

Specified by:

set in interface List<E>

Throws:

UnsupportedOperationException - if the collection is indexed, or if the collection is read-only.

IllegalArgumentException - if an entity value binding is used and the primary key of the value given is different than the existing stored primary key.

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

subList

public List<E> subList(int fromIndex,
 int toIndex)

Returns a view of the portion of this list between the specified fromIndex, inclusive, and toIndex, exclusive. Note that add() and remove() may not be called for the returned sublist. This method conforms to the List.subList(int, int) interface.

Specified by:

subList in interface List<E>

Throws:

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

equals

public boolean equals(Object other)

Compares the specified object with this list for equality. A value comparison is performed by this method and the stored values are compared rather than calling the equals() method of each element. This method conforms to the List.equals(java.lang.Object) interface.

Specified by:

equals in interface Collection<E>

Specified by:

equals in interface List<E>

Overrides:

equals in class StoredCollection<E>

Throws:

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

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<E>

Specified by:

hashCode in interface List<E>

Overrides:

hashCode in class StoredCollection<E>