Framework for BioCompute model

Changes to be committed:
	new file:   biocompute/__init__.py
	new file:   biocompute/admin.py
	new file:   biocompute/apis.py
	new file:   biocompute/migrations/__init__.py
	new file:   biocompute/models.py
	new file:   biocompute/selectors.py
	new file:   biocompute/services.py
	new file:   biocompute/urls.py

biocompute/admin.py

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+"""BioCompute Object Admin Pannel
+"""
+
+from django.contrib import admin
+from biocompute.models import Bco
+
+# class BioComputeAdmin(admin.ModelAdmin):
+#     list_display = ["", ""]
+
+admin.site.register(Bco)

biocompute/apis.py

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+#biocompute/apis.py

biocompute/models.py

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+#!/usr/bin/env python3
+# biocompute/models.py
+
+import sys
+from django.db import models
+from django.conf import settings
+from django.contrib.auth.models import Group, User
+from django.db.models.signals import post_save
+from django.dispatch import receiver
+from django.utils import timezone
+from rest_framework.authtoken.models import Token
+from prefix.models import Prefix
+
+STATE_CHOICES = [
+    ("REFERENCED", "referenced"),
+    ("PUBLISHED", "published"),
+    ("DRAFT", "draft"),
+    ("DELETE", "delete")
+]
+
+class Bco(models.Model):
+    """BioComput Object Model.
+
+    Attributes:
+    -----------
+    object_id: str
+        BCO Object Identifier, and primary key
+    contents: JSONField
+        BCO JSON contents
+    authorized_group: ManyToManyField(Group)
+        String representing the django.contrib.auth.models.Group that 'owns' the object
+    owner_user = ForeignKey(User)
+        String representing the django.contrib.auth.models.User that 'owns' the object
+    prefix: str
+        Prefix for the BCO
+    state:str
+        State of object. REFERENCED, PUBLISHED, DRAFT, and DELETE are currently accepted values.
+    last_update: DateTime
+        Date Time object for the last database change to this object
+
+    """
+
+    object_id = models.TextField(primary_key=True)
+    contents = models.JSONField()
+    prefix = models.ForeignKey(Prefix, on_delete=models.CASCADE, to_field="prefix")
+    owner = models.ForeignKey(
+        User,
+        on_delete=models.CASCADE, 
+        related_name="owned_bcos"
+    )
+    authorized_users = models.ManyToManyField(
+        User, 
+        related_name="authorized_bcos",
+        blank=True
+    )
+    authorized_groups = models.ManyToManyField(Group,blank=True)
+    state = models.CharField(max_length=20, choices=STATE_CHOICES, default="DRAFT")
+    last_update = models.DateTimeField()
+    access_count = models.IntegerField(default=0)
+
+    def __str__(self):
+        """String for representing the BCO model (in Admin site etc.)."""
+        return str(self.object_id)

biocompute/urls.py

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+# biocompute/urls.py
+
+from django.urls import path
+
+urlpatterns = [
+
+]