BTreeMapKey, Value Class

Represents a collection of keys that is maintained in sorted order. Each key has an associated value. A persistent BTree references its contained objects by Oid instead of direct object references. This way, we will only open the referenced objects on demand which reduces memory usage and initial BTree load time. Exceptions are ValueType keys and values.

Inheritance Hierarchy

SystemObject
  VelocityDbOptimizedPersistable
    VelocityDb.Collection.BTreeBTreeNode
      VelocityDb.Collection.BTreeBTreeBaseKey, Value
        VelocityDb.Collection.BTreeBTreeMapBaseKey, Value
          VelocityDb.Collection.BTreeBTreeMapKey, Value

Namespace: VelocityDb.Collection.BTree
Assembly: VelocityDb (in VelocityDb.dll) Version: 11.1.0.0 (11.1)

Syntax

C++

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[SerializableAttribute]
public class BTreeMap<Key, Value> : BTreeMapBase<Key, Value>, 
	IEnumerable<KeyValuePair<Key, Value>>, IEnumerable, IEnumerable<Key>, 
	IDictionary<Key, Value>, ICollection<KeyValuePair<Key, Value>>

<SerializableAttribute>
Public Class BTreeMap(Of Key, Value)
	Inherits BTreeMapBase(Of Key, Value)
	Implements IEnumerable(Of KeyValuePair(Of Key, Value)), 
	IEnumerable, IEnumerable(Of Key), IDictionary(Of Key, Value), 
	ICollection(Of KeyValuePair(Of Key, Value))

[SerializableAttribute]
generic<typename Key, typename Value>
public ref class BTreeMap : public BTreeMapBase<Key, Value>, 
	IEnumerable<KeyValuePair<Key, Value>>, IEnumerable, IEnumerable<Key>, 
	IDictionary<Key, Value>, ICollection<KeyValuePair<Key, Value>>

[<SerializableAttribute>]
type BTreeMap<'Key, 'Value> =  
    class
        inherit BTreeMapBase<'Key, 'Value>
        interface IEnumerable<KeyValuePair<'Key, 'Value>>
        interface IEnumerable
        interface IEnumerable<'Key>
        interface IDictionary<'Key, 'Value>
        interface ICollection<KeyValuePair<'Key, 'Value>>
    end

Type Parameters

Key: The key type of objects in this BTreeMap
Value: The value type of objects in this BTreeMap

The BTreeMapKey, Value type exposes the following members.

Constructors

	Name	Description
	BTreeMapKey, Value	Creates a new BTreeSet

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Properties

	Name	Description
	Comparer	Gets the VelocityDbComparer object that is used to compare Key objects. (Overrides BTreeBaseKey, ValueComparer.)
	Keys	Gets an ICollectionT containing the keys of the IDictionaryTKey, TValue.
	UsesOidShort	Does this BTree use short object references (32 bit) for its internal references? NO it does not. (Overrides BTreeBaseKey, ValueUsesOidShort.)

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Methods

	Name	Description
	Clear	Removes all elements from the set. (Overrides BTreeBaseKey, ValueClear.)
	CopyTo	Copies a range of elements from the BTreeBase to a compatible one-dimensional array, starting at the specified index of the target array.
	InitializeAfterRead	(Overrides BTreeBaseKey, ValueInitializeAfterRead(SessionBase).)

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Extension Methods

	Name	Description
	ToStringDetails(SessionBase, Boolean)	Overloaded. Object details as a string (Defined by Utilities.)
	ToStringDetails(Schema, TypeVersion, Boolean)	Overloaded. Currently only used by Database Manager (Defined by Utilities.)

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Reference

VelocityDb.Collection.BTree Namespace

BTreeMapAddLanguageSpecificTextSet("LST158BAD04_0?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");Key, ValueAddLanguageSpecificTextSet("LST158BAD04_1?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)"); Class

Type Parameters

Reference

BTreeMapKey, Value Class