org.h2.mvstore.rtree

类 MVRTreeMap<V>

java.lang.Object

java.util.AbstractMap<K,V>

org.h2.mvstore.MVMap<SpatialKey,V>

org.h2.mvstore.rtree.MVRTreeMap<V>

类型参数:

V - the value class

所有已实现的接口:

ConcurrentMap<SpatialKey,V>, Map<SpatialKey,V>

public class MVRTreeMap<V>
extends MVMap<SpatialKey,V>

An r-tree implementation. It supports both the linear and the quadratic split algorithm.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	MVRTreeMap.Builder<V> A builder for this class.
static class	MVRTreeMap.RTreeCursor A cursor to iterate over a subset of the keys.

从类继承的嵌套类/接口 org.h2.mvstore.MVMap

MVMap.MapBuilder<M extends MVMap<K,V>,K,V>

从类继承的嵌套类/接口 java.util.AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

从接口继承的嵌套类/接口 java.util.Map

Map.Entry<K,V>

字段概要

从类继承的字段 org.h2.mvstore.MVMap

root, store, writeVersion

构造器概要

构造器

构造器和说明
MVRTreeMap(int dimensions, DataType valueType)

方法概要

限定符和类型	方法和说明
void	add(SpatialKey key, V value) Add a given key-value pair.
void	addNodeKeys(ArrayList<SpatialKey> list, Page p) Add all node keys (including internal bounds) to the given list.
static <V> MVRTreeMap<V>	create(int dimensions, DataType valueType) Create a new map with the given dimensions and value type.
MVRTreeMap.RTreeCursor	findContainedKeys(SpatialKey x) Iterate over all keys that are fully contained within the given rectangle.
MVRTreeMap.RTreeCursor	findIntersectingKeys(SpatialKey x) Iterate over all keys that have an intersection with the given rectangle.
V	get(Object key) Get a value.
protected Object	get(Page p, Object key) Get the object for the given key.
protected int	getChildPageCount(Page p) Get the child page count for this page.
String	getType() Get the map type.
boolean	isQuadraticSplit()
V	put(SpatialKey key, V value) Add or replace a key-value pair.
protected Object	remove(Page p, long writeVersion, Object key) Remove a key-value pair.
void	setQuadraticSplit(boolean quadraticSplit)

从类继承的方法 org.h2.mvstore.MVMap

areValuesEqual, beforeWrite, binarySearch, binarySearchPage, ceilingKey, clear, containsKey, cursor, entrySet, equals, firstKey, floorKey, getCreateVersion, getFirstLast, getId, getKey, getKeyIndex, getKeyType, getMinMax, getName, getRoot, getStore, getValueType, getVersion, hashCode, higherKey, init, isClosed, isEmpty, isReadOnly, isVolatile, keyIterator, keyList, keySet, lastKey, lowerKey, newRoot, openVersion, put, putIfAbsent, remove, remove, removePage, replace, replace, setVolatile, size, sizeAsLong, splitRootIfNeeded, toString

从类继承的方法 java.util.AbstractMap

clone, containsValue, putAll, values

从类继承的方法 java.lang.Object

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

从接口继承的方法 java.util.concurrent.ConcurrentMap

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

从接口继承的方法 java.util.Map

containsValue, putAll, values

构造器详细资料

MVRTreeMap

public MVRTreeMap(int dimensions,
                  DataType valueType)

方法详细资料

create

public static <V> MVRTreeMap<V> create(int dimensions,
                                       DataType valueType)

Create a new map with the given dimensions and value type.

类型参数:

V - the value type

参数:

dimensions - the number of dimensions

valueType - the value type

返回:

the map

get

public V get(Object key)

从类复制的说明: MVMap

Get a value.

指定者:

get 在接口中 Map<SpatialKey,V>

覆盖:

get 在类中 MVMap<SpatialKey,V>

参数:

key - the key

返回:

the value, or null if not found

findIntersectingKeys

public MVRTreeMap.RTreeCursor findIntersectingKeys(SpatialKey x)

Iterate over all keys that have an intersection with the given rectangle.

参数:

x - the rectangle

返回:

the iterator

findContainedKeys

public MVRTreeMap.RTreeCursor findContainedKeys(SpatialKey x)

Iterate over all keys that are fully contained within the given rectangle.

参数:

x - the rectangle

返回:

the iterator

get

protected Object get(Page p,
                     Object key)

Get the object for the given key. An exact match is required.

参数:

p - the page

key - the key

返回:

the value, or null if not found

remove

protected Object remove(Page p,
                        long writeVersion,
                        Object key)

从类复制的说明: MVMap

Remove a key-value pair.

覆盖:

remove 在类中 MVMap<SpatialKey,V>

参数:

p - the page (may not be null)

writeVersion - the write version

key - the key

返回:

the old value, or null if the key did not exist

put

public V put(SpatialKey key,
             V value)

从类复制的说明: MVMap

Add or replace a key-value pair.

指定者:

put 在接口中 Map<SpatialKey,V>

覆盖:

put 在类中 MVMap<SpatialKey,V>

参数:

key - the key (may not be null)

value - the value (may not be null)

返回:

the old value if the key existed, or null otherwise

add

public void add(SpatialKey key,
                V value)

Add a given key-value pair. The key should not exist (if it exists, the result is undefined).

参数:

key - the key

value - the value

addNodeKeys

public void addNodeKeys(ArrayList<SpatialKey> list,
                        Page p)

Add all node keys (including internal bounds) to the given list. This is mainly used to visualize the internal splits.

参数:

list - the list

p - the root page

isQuadraticSplit

public boolean isQuadraticSplit()

setQuadraticSplit

public void setQuadraticSplit(boolean quadraticSplit)

getChildPageCount

protected int getChildPageCount(Page p)

从类复制的说明: MVMap

Get the child page count for this page. This is to allow another map implementation to override the default, in case the last child is not to be used.

覆盖:

getChildPageCount 在类中 MVMap<SpatialKey,V>

参数:

p - the page

返回:

the number of direct children

getType

public String getType()

从类复制的说明: MVMap

Get the map type. When opening an existing map, the map type must match.

覆盖:

getType 在类中 MVMap<SpatialKey,V>

返回:

the map type