FTS Parser Dialog v8
Use the FTS Parser
dialog to create a new text search parser. A text search parser defines a method for splitting a text string into tokens and assigning types (categories) to the tokens.
The FTS Parser
dialog organizes the development of a text search parser through the following dialog tabs: General
, and Definition
. The SQL
tab displays the SQL code generated by dialog selections.
Use the fields in the General
tab to identify a text search parser:
- Use the
Name
field to add a descriptive name for the parser. The name will be displayed in theBrowser
tree control. - Select the name of the schema in which the parser will reside from the drop-down listbox in the
Schema
field. - Store notes about the domain in the
Comment
field.
Click the Definition
tab to continue.
Use the fields in the Definition
tab to define parameters:
- Use the drop-down listbox next to
Start function
to select the name of the function that will initialize the parser. - Use the drop-down listbox next to
Get next token function
to select the name of the function that will return the next token. - Use the drop-down listbox next to
End function
to select the name of the function that is called when the parser is finished. - Use the drop-down listbox next to
Lextypes function
to select the name of the lextypes function for the parser. The lextypes function returns an array that contains the id, alias, and a description of the tokens used by the parser. - Use the drop-down listbox next to
Headline function
to select the name of the headline function for the parser. The headline function returns an excerpt from the document in which the terms of the query are highlighted.
Click the SQL
tab to continue.
Your entries in the FTS Parser
dialog generate a generate a SQL command. Use the SQL
tab for review; revisit or switch tabs to make any changes to the SQL command.
- Click the
Info
button (i) to access online help. View context-sensitive help in theTabbed browser
, where a new tab displays the PostgreSQL core documentation. - Click the
Save
button to save work. - Click the
Cancel
button to exit without saving work. - Click the
Reset
button to restore configuration parameters.