Class TrecDocParser

Parser for trec doc content, invoked on doc text excluding <DOC> and <DOCNO> which are handled in TrecContentSource. Required to be stateless and hence thread safe.

Inheritance
System.Object
TrecDocParser
TrecFBISParser
TrecFR94Parser
TrecFTParser
TrecGov2Parser
TrecLATimesParser
TrecParserByPath
Namespace: Lucene.Net.Benchmarks.ByTask.Feeds
Assembly: Lucene.Net.Benchmark.dll
Syntax
public abstract class TrecDocParser : object

Fields

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DEFAULT_PATH_TYPE

trec parser type used for unknown extensions

Declaration
public static readonly TrecDocParser.ParsePathType DEFAULT_PATH_TYPE
Field Value
Type Description
TrecDocParser.ParsePathType

Methods

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Extract(StringBuilder, String, String, Int32, String[])

Extract from buf the text of interest within specified tags.

Declaration
public static string Extract(StringBuilder buf, string startTag, string endTag, int maxPos, string[] noisePrefixes)
Parameters
Type Name Description
StringBuilder buf

Entire input text.
System.String startTag

Tag marking start of text of interest.
System.String endTag

Tag marking end of text of interest.
System.Int32 maxPos

if ≥ 0 sets a limit on start of text of interest.
System.String[] noisePrefixes

Text of interest or null if not found.
Returns
Type Description
System.String
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Parse(DocData, String, TrecContentSource, StringBuilder, TrecDocParser.ParsePathType)

Parse the text prepared in docBuf into a result DocData, no synchronization is required.

Declaration
public abstract DocData Parse(DocData docData, string name, TrecContentSource trecSrc, StringBuilder docBuf, TrecDocParser.ParsePathType pathType)
Parameters
Type Name Description
DocData docData

Reusable result.
System.String name

Name that should be set to the result.
TrecContentSource trecSrc

Calling trec content source.
StringBuilder docBuf

Text to parse.
TrecDocParser.ParsePathType pathType

Type of parsed file, or UNKNOWN if unknown - may be used by parsers to alter their behavior according to the file path type.

Returns
Type Description
DocData
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PathType(FileInfo)

Compute the path type of a file by inspecting name of file and its parents.

Declaration
public static TrecDocParser.ParsePathType PathType(FileInfo f)
Parameters
Type Name Description
FileInfo f
Returns
Type Description
TrecDocParser.ParsePathType
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StripTags(StringBuilder, Int32)

strip tags from 

buf
: each tag is replaced by a single blank.

Declaration
public static string StripTags(StringBuilder buf, int start)
Parameters
Type Name Description
StringBuilder buf
System.Int32 start
Returns
Type Description
System.String

Text obtained when stripping all tags from buf (input is unmodified).
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StripTags(String, Int32)

Strip tags from input.

Declaration
public static string StripTags(string buf, int start)
Parameters
Type Name Description
System.String buf
System.Int32 start
Returns
Type Description
System.String
See Also