USER_LEXER

Lexer you create to index a particular user-defined language.

Use USER_LEXER to plug in your own language-specific lexing solution. This enables you to define lexers for languages that are not supported by Oracle Text. It also enables you to define a new lexer for a language that is supported but whose lexer is inappropriate for your application.

This section contains the following topics.

• USER_LEXER Routines

• USER_LEXER Limitations

• USER_LEXER Attributes

• INDEX_PROCEDURE

• INPUT_TYPE

• QUERY_PROCEDURE

• Encoding Tokens as XML

• XML Schema for No-Location_ User-defined Indexing Procedure

• XML Schema for User-defined Indexing Procedure with Location

• XML Schema for User-defined Lexer Query Procedure