Class Trie

A Trie is used to store a dictionary of words and their stems.

Actually, what is stored are words with their respective patch commands. A trie can be termed forward (keys read from left to right) or backward (keys read from right to left). This property will vary depending on the language for which a Trie is constructed.

Inheritance

System.Object

Trie

MultiTrie

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()

Namespace: Egothor.Stemmer

Assembly: Lucene.Net.Analysis.Stempel.dll

Syntax

public class Trie

Constructors

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Trie(IDataInput)

Constructor for the Trie object.

Declaration

public Trie(IDataInput is)

Parameters

Type	Name	Description
J2N.IO.IDataInput	is	the input stream

Exceptions

Type	Condition
System.IO.IOException	if an I/O error occurs

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Trie(Boolean)

Constructor for the Trie object.

Declaration

public Trie(bool forward)

Parameters

Type	Name	Description
System.Boolean	forward	set to `true`

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Trie(Boolean, Int32, IList<String>, IList<Row>)

Constructor for the Trie object.

Declaration

public Trie(bool forward, int root, IList<string> cmds, IList<Row> rows)

Parameters

Type	Name	Description
System.Boolean	forward	`true` if read left to right, `false` if read right to left
System.Int32	root	index of the row that is the root node
System.Collections.Generic.IList<System.String>	cmds	the patch commands to store
System.Collections.Generic.IList<Row>	rows	a Vector of Vectors. Each inner Vector is a node of this Trie

Methods

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Add(String, String)

Add the given key associated with the given patch command. If either parameter is null this method will return without executing.

Declaration

public virtual void Add(string key, string cmd)

Parameters

Type	Name	Description
System.String	key	the key
System.String	cmd	the patch command

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GetAll(String)

Gets the all attribute of the Trie object

Declaration

public virtual string[] GetAll(string key)

Parameters

Type	Name	Description
System.String	key	Description of the Parameter

Returns

Type	Description
System.String[]	The all value

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GetCells()

Return the number of cells in this Trie object.

Declaration

public virtual int GetCells()

Returns

Type	Description
System.Int32	the number of cells

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GetCellsPnt()

Gets the cellsPnt attribute of the Trie object

Declaration

public virtual int GetCellsPnt()

Returns

Type	Description
System.Int32	The cellsPnt value

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GetCellsVal()

Gets the cellsVal attribute of the Trie object

Declaration

public virtual int GetCellsVal()

Returns

Type	Description
System.Int32	The cellsVal value

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GetFully(String)

Return the element that is stored in a cell associated with the given key.

Declaration

public virtual string GetFully(string key)

Parameters

Type	Name	Description
System.String	key	the key

Returns

Type	Description
System.String	the associated element

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GetLastOnPath(String)

Return the element that is stored as last on a path associated with the given key.

Declaration

public virtual string GetLastOnPath(string key)

Parameters

Type	Name	Description
System.String	key	the key associated with the desired element

Returns

Type	Description
System.String	the last on path element

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PrintInfo(TextWriter, String)

writes debugging info to the printstream

Declaration

public virtual void PrintInfo(TextWriter out, string prefix)

Parameters

Type	Name	Description
System.IO.TextWriter	out
System.String	prefix

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Reduce(Reduce)

Remove empty rows from the given Trie and return the newly reduced Trie.

Declaration

public virtual Trie Reduce(Reduce by)

Parameters

Type	Name	Description
Reduce	by	the Trie to reduce

Returns

Type	Description
Trie	newly reduced Trie

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Store(IDataOutput)

Write this Trie to the given output stream.

Declaration

public virtual void Store(IDataOutput os)

Parameters

Type	Name	Description
J2N.IO.IDataOutput	os	the output stream

Exceptions

Type	Condition
System.IO.IOException	if an I/O error occurs