Class SpatialPrefixTreeFactory
Abstract Factory for creating SpatialPrefixTree instances with useful
defaults and passed on configurations defined in a System.Collections.Generic.IDictionary<TKey, TValue>.
Note
This API is experimental and might change in incompatible ways in the next release.
Inheritance
System.Object
SpatialPrefixTreeFactory
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Assembly: Lucene.Net.Spatial.dll
Syntax
public abstract class SpatialPrefixTreeFactory
Fields
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m_args
Declaration
protected IDictionary<string, string> m_args
Field Value
Type |
Description |
System.Collections.Generic.IDictionary<System.String, System.String> |
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m_ctx
Declaration
protected SpatialContext m_ctx
Field Value
Type |
Description |
Spatial4n.Context.SpatialContext |
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m_maxLevels
Declaration
protected int? m_maxLevels
Field Value
Type |
Description |
System.Nullable<System.Int32> |
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MAX_DIST_ERR
Declaration
public const string MAX_DIST_ERR = "maxDistErr"
Field Value
Type |
Description |
System.String |
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MAX_LEVELS
Declaration
public const string MAX_LEVELS = "maxLevels"
Field Value
Type |
Description |
System.String |
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PREFIX_TREE
Declaration
public const string PREFIX_TREE = "prefixTree"
Field Value
Type |
Description |
System.String |
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Methods
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GetLevelForDistance(Double)
Declaration
protected abstract int GetLevelForDistance(double degrees)
Parameters
Type |
Name |
Description |
System.Double |
degrees |
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Returns
Type |
Description |
System.Int32 |
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Init(IDictionary<String, String>, SpatialContext)
Declaration
protected virtual void Init(IDictionary<string, string> args, SpatialContext ctx)
Parameters
Type |
Name |
Description |
System.Collections.Generic.IDictionary<System.String, System.String> |
args |
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Spatial4n.Context.SpatialContext |
ctx |
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InitMaxLevels()
Declaration
protected virtual void InitMaxLevels()
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MakeSPT(IDictionary<String, String>, SpatialContext)
The factory is looked up via "prefixTree" in args
, expecting "geohash" or "quad".
Declaration
public static SpatialPrefixTree MakeSPT(IDictionary<string, string> args, SpatialContext ctx)
Parameters
Type |
Name |
Description |
System.Collections.Generic.IDictionary<System.String, System.String> |
args |
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Spatial4n.Context.SpatialContext |
ctx |
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Returns
Exceptions
Type |
Condition |
System.ArgumentNullException |
args or ctx is null .
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MakeSPT(IDictionary<String, String>, Assembly, SpatialContext)
The factory is looked up via "prefixTree" in args
, expecting "geohash" or "quad".
Declaration
public static SpatialPrefixTree MakeSPT(IDictionary<string, string> args, Assembly assembly, SpatialContext ctx)
Parameters
Type |
Name |
Description |
System.Collections.Generic.IDictionary<System.String, System.String> |
args |
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System.Reflection.Assembly |
assembly |
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Spatial4n.Context.SpatialContext |
ctx |
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Returns
Exceptions
Type |
Condition |
System.ArgumentNullException |
args or ctx is null .
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NewSPT()
Declaration
protected abstract SpatialPrefixTree NewSPT()
Returns