Initial refactoring of baseline functionality to support revised Nodes

.gitignore

@@ -93,7 +93,7 @@ celerybeat-schedule
 .venv
 src/venv/
 env/
-# venv/
+venv/
 ENV/
 env.bak/
 venv.bak/

README.md

@@ -1,28 +1,28 @@
 # PyHarvest
-Extremely naive harvester.  The key element is the postgresql database that manages resources in such a way that unique URI are kept in a seperate tables and only a reference (id) refers to it.  
+Extremely naive harvester. The key element is the PostGresql database that manages resources in such a way that unique URI are kept in a seperate tables and only a reference (id) refers to it.  
 
 
 ## Data model
 
 ![ER model](store_er.png)
 
-Unique resources are stored in resources table and given a unique id.
+Unique resources are stored in the resources table and given a unique id.
 Statements which the object are stored in `t_resource` and is therefore just a collections of id (subject,predicate,object,context).
 Statements which the object is a literal are kept in `t_literal` and stores different aspect of the literal : it's value, its type and its language.
-The literal types are manages in `lit_type`, only the id of that type is stored in `t_literal`
+The literal types are managed in `lit_type`, only the id of that type is stored in `t_literal`
 
-Two views ; `resource_triples` and `literal_triples` merge back the resources ids and their values.
+Two views: `resource_triples` and `literal_triples` merge back the resources ids and their values.
 Those views are also used to insert triples. The views have INSTEAD OF triggers that does the house keeping of create a new resources if it does not already exists in `resources` table.  The trigger on `literal_triples`also takes care of this job for literal types - if any. NULL type is just a string.
- 
- ## Example code
- 
- `main.py` shows an simple example of inserting triples into the database
+
+## Example code
+
+ `main.py` shows a simple example of inserting triples into the database
 
 To run this example, you must set an environment `GSIP_HARV_CON_STR` variable with the connection string (eg: `host=localhost dbname=gsip user=gsip password=S3kret`)
 
 ## Running the app
 
-* activate your virtualenv.
+* activate your virtualenv: . venv/bin/activate
 * run: pip install -r requirements.txt
 * run: python app.py
-* navigate to: http://127.0.0.1:5000/
+* navigate to: http://127.0.0.1:8000/