Source code for tvb.adapters.datatypes.db.tracts

# -*- coding: utf-8 -*-
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from sqlalchemy import Column, Integer, ForeignKey, String
from sqlalchemy.orm import relationship
from tvb.datatypes.tracts import Tracts
from tvb.adapters.datatypes.db.region_mapping import RegionVolumeMappingIndex
from tvb.core.entities.model.model_datatype import DataType


class TractsIndex(DataType):
    id = Column(Integer, ForeignKey(DataType.id), primary_key=True)

    fk_region_volume_map_gid = Column(String(32), ForeignKey(RegionVolumeMappingIndex.gid),
                                      nullable=not Tracts.region_volume_map.required)
    region_volume_map = relationship(RegionVolumeMappingIndex, foreign_keys=fk_region_volume_map_gid,
                                     primaryjoin=RegionVolumeMappingIndex.gid == fk_region_volume_map_gid)

    def fill_from_has_traits(self, datatype):
        # type: (Tracts)  -> None
        super(TractsIndex, self).fill_from_has_traits(datatype)
        if datatype.region_volume_map is not None:
            self.fk_region_volume_map_gid = datatype.region_volume_map.gid.hex