feat: improve prefix handling in json ontos (DEV-572) (#164)

* implement first step of issue description

* implement second step of issue description

* adapt docs

* only set hashtag to true if onto ends with "#" or "/v2"

docs/dsp-tools-create-ontologies.md

@@ -905,5 +905,5 @@ it is necessary to reference entities that are defined elsewhere. The following
   [prefixes](dsp-tools-create.md#prefixes-object) and the prefix must be identical to the ontology's `name`.  
 - A different ontology defined in the same file: Within one data model file, multiple ontologies can be defined.
   These will be created in the exact order they appear in the `ontologies` array. Once an ontology has been created,
-  it can be referenced by the following ontologies, provided it is added in the
-  [prefixes](dsp-tools-create.md#prefixes-object).
+  it can be referenced by the following ontologies via its name: `first-onto:hasName`. It is not necessary to add 
+  `first-onto` to the prefixes.

docs/dsp-tools-create.md

@@ -66,8 +66,8 @@ full qualified IRI each time it is used. So, instead of writing a property calle
 }
 ```
 
-Note that prefixes can be defined for the ontologies defined in this file, but this is only necessary if the ontology
-needs to be referred to explicitly by another ontology within the same file.
+It is not necessary to define prefixes for the ontologies that are defined in this file. Ontologies in the same
+file can refer to each other via their name. See also [here](./dsp-tools-create-ontologies.md#referencing-ontologies).
 
 ### "$schema" object
 

knora/dsplib/models/helpers.py

@@ -162,7 +162,7 @@ def __init__(self, context: Optional[dict[str, str]] = None):
         # add ontologies from context, if any
         if context:
             for prefix, onto in context.items():
-                self._context[prefix] = OntoInfo(onto.removesuffix('#'), onto.endswith('#'))
+                self._context[prefix] = OntoInfo(onto.removesuffix('#'), onto.endswith('#') or onto.endswith('/v2'))
 
         # add standard ontologies (rdf, rdfs, owl, xsl)
         for k, v in self.base_ontologies.items():

knora/dsplib/utils/onto_create_ontology.py

@@ -398,6 +398,7 @@ def create_ontology(input_file: str,
                                     project=project,
                                     label=ontology["label"],
                                     name=ontology_name).create()
+            context.add_context(new_ontology.name, new_ontology.id + ('#' if not new_ontology.id.endswith('#') else ''))
             last_modification_date = new_ontology.lastModificationDate
             if verbose:
                 print(f"Created ontology '{ontology_name}'.")