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import abc |
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import sys |
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from typing import Sequence, Type |
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from mandos.chembl_api import ChemblApi |
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from mandos.model.targets import DagTargetLinkType, Target, TargetRelationshipType, TargetType |
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class TargetTraversalStrategy(metaclass=abc.ABCMeta): |
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"""""" |
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@classmethod |
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def api(cls) -> ChemblApi: |
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raise NotImplementedError() |
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def traverse(self, target: Target) -> Sequence[Target]: |
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return self.__call__(target) |
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def __call__(self, target: Target) -> Sequence[Target]: |
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""" |
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Returns: |
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""" |
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raise NotImplementedError() |
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class TargetTraversalStrategy0(TargetTraversalStrategy, metaclass=abc.ABCMeta): |
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"""""" |
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def __call__(self, target: Target) -> Sequence[Target]: |
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""" |
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Returns: |
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""" |
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return [target] |
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class TargetTraversalStrategy1(TargetTraversalStrategy, metaclass=abc.ABCMeta): |
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"""""" |
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def __call__(self, target: Target) -> Sequence[Target]: |
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""" |
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Returns: |
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""" |
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edges = { |
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DagTargetLinkType( |
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TargetType.selectivity_group, |
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TargetRelationshipType.superset_of, |
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TargetType.protein_complex_group, |
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), |
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DagTargetLinkType( |
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TargetType.protein_complex_group, |
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TargetRelationshipType.subset_of, |
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TargetType.protein_complex_group, |
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), |
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DagTargetLinkType( |
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TargetType.selectivity_group, |
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TargetRelationshipType.superset_of, |
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TargetType.protein_family, |
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), |
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DagTargetLinkType( |
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TargetType.protein_family, |
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TargetRelationshipType.subset_of, |
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TargetType.protein_family, |
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), |
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} |
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found = target.traverse(edges) |
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return [f.target for f in found if f.is_end] |
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class TargetTraversalStrategy2(TargetTraversalStrategy, metaclass=abc.ABCMeta): |
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"""""" |
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def __call__(self, target: Target) -> Sequence[Target]: |
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""" |
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Returns: |
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""" |
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# traverse the DAG up and down, following only desired links |
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# some links from complex to complex group are "overlaps with" |
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# ex: CHEMBL4296059 |
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# it's also rare to need going from a selectivity group "down" to complex group / family / etc. |
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# usually they have a link upwards |
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# so... |
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# If it's a single protein, it's too risk to traverse up into complexes |
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# That's because lots of proteins *occasionally* make complexes, and there are some weird ones |
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# BUT We want to catch some obvious cases like GABA A subunits |
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# ChEMBL calls many of these "something subunit something" |
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# This is the only time we'll allow going directly from protein to complex |
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# In this case, we'll also disallow links form protein to family, |
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# just because we're pretty sure it's a subunit |
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# But we can go from single protein to complex to complex group to family |
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if ( |
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target.type |
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in [ |
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TargetType.single_protein, |
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TargetType.protein_family, |
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TargetType.protein_complex, |
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TargetType.protein_complex_group, |
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] |
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and ("subunit" in target.name.split(" ") or "chain" in target.name.split(" ")) |
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): |
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edges = { |
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DagTargetLinkType( |
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TargetType.single_protein, |
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TargetRelationshipType.subset_of, |
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TargetType.protein_complex, |
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), |
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DagTargetLinkType( |
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TargetType.protein_complex, |
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TargetRelationshipType.subset_of, |
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TargetType.protein_complex_group, |
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), |
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DagTargetLinkType( |
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TargetType.protein_complex, |
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TargetRelationshipType.overlaps_with, |
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TargetType.protein_complex_group, |
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), |
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DagTargetLinkType( |
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TargetType.protein_complex_group, |
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TargetRelationshipType.subset_of, |
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TargetType.protein_complex_group, |
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), |
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DagTargetLinkType( |
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TargetType.protein_complex_group, |
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TargetRelationshipType.subset_of, |
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TargetType.protein_family, |
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), |
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DagTargetLinkType( |
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TargetType.protein_family, |
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TargetRelationshipType.subset_of, |
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TargetType.protein_family, |
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), |
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} |
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elif target.type in [TargetType.single_protein, TargetType.protein_family]: |
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edges = { |
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DagTargetLinkType( |
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TargetType.single_protein, |
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TargetRelationshipType.subset_of, |
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TargetType.protein_family, |
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), |
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DagTargetLinkType( |
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TargetType.protein_family, |
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TargetRelationshipType.subset_of, |
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TargetType.protein_family, |
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), |
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} |
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elif target.type in [TargetType.protein_complex, TargetType.protein_complex_group]: |
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edges = { |
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DagTargetLinkType( |
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TargetType.protein_complex, |
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TargetRelationshipType.subset_of, |
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TargetType.protein_complex_group, |
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), |
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DagTargetLinkType( |
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TargetType.protein_complex, |
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TargetRelationshipType.overlaps_with, |
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TargetType.protein_complex_group, |
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), |
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DagTargetLinkType( |
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TargetType.protein_complex_group, |
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TargetRelationshipType.subset_of, |
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TargetType.protein_complex_group, |
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), |
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DagTargetLinkType( |
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TargetType.protein_complex_group, |
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TargetRelationshipType.subset_of, |
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TargetType.protein_family, |
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), |
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DagTargetLinkType( |
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TargetType.protein_family, |
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TargetRelationshipType.subset_of, |
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TargetType.protein_family, |
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), |
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} |
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elif target.type == TargetType.selectivity_group: |
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edges = { |
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DagTargetLinkType( |
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TargetType.selectivity_group, |
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TargetRelationshipType.superset_of, |
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TargetType.protein_complex_group, |
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), |
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DagTargetLinkType( |
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TargetType.protein_complex_group, |
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TargetRelationshipType.subset_of, |
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TargetType.protein_complex_group, |
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), |
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DagTargetLinkType( |
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TargetType.selectivity_group, |
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TargetRelationshipType.superset_of, |
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TargetType.protein_family, |
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), |
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DagTargetLinkType( |
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TargetType.protein_family, |
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TargetRelationshipType.subset_of, |
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TargetType.protein_family, |
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), |
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} |
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else: |
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return [target] |
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for edge in set(edges): |
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edges.add( |
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DagTargetLinkType( |
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edge.source_type, TargetRelationshipType.equivalent_to, edge.dest_type |
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) |
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) |
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found = target.traverse(edges) |
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return [f.target for f in found if f.is_end] |
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class TargetTraversalStrategies: |
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""" |
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Factory. |
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""" |
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@classmethod |
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def by_name(cls, fully_qualified: str, api: ChemblApi) -> TargetTraversalStrategy: |
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""" |
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For dependency injection. |
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Args: |
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fully_qualified: |
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api: |
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Returns: |
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""" |
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s = fully_qualified |
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mod = s[: s.rfind(".")] |
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clz = s[s.rfind(".") :] |
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x = getattr(sys.modules[mod], clz) |
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return cls.create(x, api) |
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@classmethod |
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def strategy0(cls, api: ChemblApi) -> TargetTraversalStrategy: |
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return cls.create(TargetTraversalStrategy0, api) |
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@classmethod |
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def strategy1(cls, api: ChemblApi) -> TargetTraversalStrategy: |
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return cls.create(TargetTraversalStrategy1, api) |
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@classmethod |
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def strategy2(cls, api: ChemblApi) -> TargetTraversalStrategy: |
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return cls.create(TargetTraversalStrategy2, api) |
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@classmethod |
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def create(cls, clz: Type[TargetTraversalStrategy], api: ChemblApi) -> TargetTraversalStrategy: |
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""" |
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Factory method. |
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Args: |
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clz: |
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api: |
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Returns: |
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""" |
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class X(clz): |
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@classmethod |
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def api(cls) -> ChemblApi: |
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return api |
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X.__name__ = clz.__name__ |
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return X() |
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__all__ = ["TargetTraversalStrategy", "TargetTraversalStrategies"] |
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