1 files changed, 0 insertions, 103 deletions
diff --git a/bsie/base/extractor.py b/bsie/base/extractor.py
deleted file mode 100644
index c44021b..0000000
--- a/bsie/base/extractor.py
+++ /dev/null
@@ -1,103 +0,0 @@
-"""The Extractor classes transform content into triples.
-
-Part of the bsie module.
-A copy of the license is provided with the project.
-Author: Matthias Baumgartner, 2022
-"""
-# imports
-import abc
-import typing
-
-# bsie imports
-from bsie.utils import bsfs, node, ns
-
-# exports
-__all__: typing.Sequence[str] = (
-    'Extractor',
-    )
-
-# constants
-
-# essential definitions typically used in extractor schemas.
-# NOTE: This preamble is only for convenience; Each Extractor must implement its use, if so desired.
-SCHEMA_PREAMBLE = '''
-    # common external prefixes
-    prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
-    prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
-    prefix xsd: <http://www.w3.org/2001/XMLSchema#>
-    prefix schema: <http://schema.org/>
-
-    # common bsfs prefixes
-    prefix bsfs: <http://bsfs.ai/schema/>
-    prefix bse: <http://bsfs.ai/schema/Entity#>
-
-    # essential nodes
-    bsfs:Entity rdfs:subClassOf bsfs:Node .
-    bsfs:File rdfs:subClassOf bsfs:Entity .
-
-    # common definitions
-    xsd:string rdfs:subClassOf bsfs:Literal .
-    xsd:integer rdfs:subClassOf bsfs:Literal .
-
-    '''
-
-
-## code ##
-
-class Extractor(abc.ABC):
-    """Produce (subject, predicate, value)-triples from some content.
-    The Extractor produces princpal predicates that provide information
-    about the content itself (i.e., triples that include the subject),
-    and may also generate triples with auxiliary predicates if the
-    extracted value is a node itself.
-    """
-
-    # what type of content is expected (i.e. reader subclass).
-    CONTENT_READER: typing.Optional[str] = None
-
-    # extractor schema.
-    _schema: bsfs.schema.Schema
-
-    def __init__(self, schema: bsfs.schema.Schema):
-        self._schema = schema
-
-    def __str__(self) -> str:
-        return bsfs.typename(self)
-
-    def __repr__(self) -> str:
-        return f'{bsfs.typename(self)}()'
-
-    def __eq__(self, other: typing.Any) -> bool:
-        return isinstance(other, type(self)) \
-          and self.CONTENT_READER == other.CONTENT_READER \
-          and self.schema == other.schema
-
-    def __hash__(self) -> int:
-        return hash((type(self), self.CONTENT_READER, self.schema))
-
-    @property
-    def schema(self) -> bsfs.schema.Schema:
-        """Return the extractor's schema."""
-        return self._schema
-
-    @property
-    def principals(self) -> typing.Iterator[bsfs.schema.Predicate]:
-        """Return the principal predicates, i.e., relations from/to the extraction subject."""
-        ent = self.schema.node(ns.bsfs.Entity)
-        return (
-            pred
-            for pred
-            in self.schema.predicates()
-            if pred.domain <= ent or (pred.range is not None and pred.range <= ent)
-            )
-
-    @abc.abstractmethod
-    def extract(
-            self,
-            subject: node.Node,
-            content: typing.Any,
-            principals: typing.Iterable[bsfs.schema.Predicate],
-            ) -> typing.Iterator[typing.Tuple[node.Node, bsfs.schema.Predicate, typing.Any]]:
-        """Return (node, predicate, value) triples."""
-
-## EOF ##