Recoll index format details

Terms are not stemmed before being stored. They are turned to all minuscule letters with no accents.

Special prefixed terms:

• Ddate: modification date of file, like YYYYMMDD
• Mmonth: YYYYMM
• Ppathhash truncated/hashed version of file path. For single-document files, and for the file part of a multi-document file. Used for up-to-date checks and for retrieving a document by path. omega uses U for the equivalent term used for up to date checks.
• Qpathhash+ipath same + internal path for documents inside multi-document files. Used to set the existence flag for subdocs when a multi-document file is found to be up to date, or for deleting all subdocs for a file, or for retrieving a document by path+ipath. No real omega equivalent. Compatible with Q definition in termprefixes.txt: unique identifier.
• Tmimetype: document mime type.
• Wweak: 10 days period (not used any more by omega)
• Yyear YYYY
• XSFNfilename utf8 version of file name. Used for specific file name searches

Omega prefixes with no equivalents in Recoll: P, R, U

None of the "date" terms are currently used by recoll queries

Values: Recoll currently stores no document values.

Document data record format

• url= Full url. Always file://abspath. The path is not encoded to utf-8, this is the system file name ,usable as an argument to open(). (omega: sort of same)
• mtype= mime type (omega: type)
• fmtime= file modification date (omega: modtime)
• dmtime= document modification date (omega: none)
• origcharset= character set the text was converted from (omega: none)
• fbytes= file size in bytes (omega: size)
• dbytes= document size in bytes (omega: none)
• ipath= internal path for docs in multidoc files. (omega: none)
• caption= title of document, utf8 (omega: same)
• keywords= key words, utf8 (omega: none)
• abstract= document abstract, utf8 (omega: sample)