Merge pull request #3521 from lonvia/make-requests-optional

[nominatim.git] / docs / develop / Tokenizers.md

diff --git a/docs/develop/Tokenizers.md b/docs/develop/Tokenizers.md
index 5fe4e38d436b2978ce334a258fdaa80c3a9a9e58..03988ce0689ad219017d0d746a3b8ec1dc742b4b 100644 (file)
--- a/docs/develop/Tokenizers.md
+++ b/docs/develop/Tokenizers.md
@@ -105,7 +105,7 @@ functions. By convention, these should be placed in `lib-sql/tokenizer`.
 If the tokenizer has a default configuration file, this should be saved in
 the `settings/<NAME>_tokenizer.<SUFFIX>`.
 
-### Configuration and Persistance
+### Configuration and Persistence
 
 Tokenizers may define custom settings for their configuration. All settings
 must be prefixed with `NOMINATIM_TOKENIZER_`. Settings may be transient or
@@ -130,18 +130,18 @@ class as defined below.
 
 ### Python Tokenizer Class
 
-All tokenizers must inherit from `nominatim.tokenizer.base.AbstractTokenizer`
+All tokenizers must inherit from `nominatim_db.tokenizer.base.AbstractTokenizer`
 and implement the abstract functions defined there.
 
-::: nominatim.tokenizer.base.AbstractTokenizer
-    rendering:
-        heading_level: 4
+::: nominatim_db.tokenizer.base.AbstractTokenizer
+    options:
+        heading_level: 6
 
 ### Python Analyzer Class
 
-::: nominatim.tokenizer.base.AbstractAnalyzer
-    rendering:
-        heading_level: 4
+::: nominatim_db.tokenizer.base.AbstractAnalyzer
+    options:
+        heading_level: 6
 
 ### PL/pgSQL Functions
 
@@ -189,6 +189,28 @@ a house number token text. If a place has multiple house numbers they must
 be listed with a semicolon as delimiter. Must be NULL when the place has no
 house numbers.
 
+```sql
+FUNCTION token_is_street_address(info JSONB) RETURNS BOOLEAN
+```
+
+Return true if this is an object that should be parented against a street.
+Only relevant for objects with address rank 30.
+
+```sql
+FUNCTION token_has_addr_street(info JSONB) RETURNS BOOLEAN
+```
+
+Return true if there are street names to match against for finding the
+parent of the object.
+
+
+```sql
+FUNCTION token_has_addr_place(info JSONB) RETURNS BOOLEAN
+```
+
+Return true if there are place names to match against for finding the
+parent of the object.
+
 ```sql
 FUNCTION token_matches_street(info JSONB, street_tokens INTEGER[]) RETURNS BOOLEAN
 ```