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From g..@apache.org
Subject svn commit: r1242755 - in /incubator/bloodhound/trunk/bloodhound_multiproduct: ./ LICENSE NOTICE multiproduct/ multiproduct/__init__.py multiproduct/model.py setup.py tests/ tests/__init__.py tests/model.py
Date Fri, 10 Feb 2012 13:18:17 GMT
Author: gjm
Date: Fri Feb 10 13:18:16 2012
New Revision: 1242755

URL: http://svn.apache.org/viewvc?rev=1242755&view=rev
Log:
multiproduct: db tables for product and product resource mapping tables and some limited unittesting

Added:
    incubator/bloodhound/trunk/bloodhound_multiproduct/
    incubator/bloodhound/trunk/bloodhound_multiproduct/LICENSE   (with props)
    incubator/bloodhound/trunk/bloodhound_multiproduct/NOTICE   (with props)
    incubator/bloodhound/trunk/bloodhound_multiproduct/multiproduct/
    incubator/bloodhound/trunk/bloodhound_multiproduct/multiproduct/__init__.py   (with props)
    incubator/bloodhound/trunk/bloodhound_multiproduct/multiproduct/model.py   (with props)
    incubator/bloodhound/trunk/bloodhound_multiproduct/setup.py   (with props)
    incubator/bloodhound/trunk/bloodhound_multiproduct/tests/
    incubator/bloodhound/trunk/bloodhound_multiproduct/tests/__init__.py   (with props)
    incubator/bloodhound/trunk/bloodhound_multiproduct/tests/model.py   (with props)

Added: incubator/bloodhound/trunk/bloodhound_multiproduct/LICENSE
URL: http://svn.apache.org/viewvc/incubator/bloodhound/trunk/bloodhound_multiproduct/LICENSE?rev=1242755&view=auto
==============================================================================
--- incubator/bloodhound/trunk/bloodhound_multiproduct/LICENSE (added)
+++ incubator/bloodhound/trunk/bloodhound_multiproduct/LICENSE Fri Feb 10 13:18:16 2012
@@ -0,0 +1,202 @@
+
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+      any Contribution intentionally submitted for inclusion in the Work
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+   6. Trademarks. This License does not grant permission to use the trade
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Propchange: incubator/bloodhound/trunk/bloodhound_multiproduct/LICENSE
------------------------------------------------------------------------------
    svn:eol-style = native

Added: incubator/bloodhound/trunk/bloodhound_multiproduct/NOTICE
URL: http://svn.apache.org/viewvc/incubator/bloodhound/trunk/bloodhound_multiproduct/NOTICE?rev=1242755&view=auto
==============================================================================
--- incubator/bloodhound/trunk/bloodhound_multiproduct/NOTICE (added)
+++ incubator/bloodhound/trunk/bloodhound_multiproduct/NOTICE Fri Feb 10 13:18:16 2012
@@ -0,0 +1,6 @@
+Apache Bloodhound
+Copyright 2012 The Apache Software Foundation
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/)
+

Propchange: incubator/bloodhound/trunk/bloodhound_multiproduct/NOTICE
------------------------------------------------------------------------------
    svn:eol-style = native

Added: incubator/bloodhound/trunk/bloodhound_multiproduct/multiproduct/__init__.py
URL: http://svn.apache.org/viewvc/incubator/bloodhound/trunk/bloodhound_multiproduct/multiproduct/__init__.py?rev=1242755&view=auto
==============================================================================
--- incubator/bloodhound/trunk/bloodhound_multiproduct/multiproduct/__init__.py (added)
+++ incubator/bloodhound/trunk/bloodhound_multiproduct/multiproduct/__init__.py Fri Feb 10
13:18:16 2012
@@ -0,0 +1,21 @@
+
+#  Licensed to the Apache Software Foundation (ASF) under one
+#  or more contributor license agreements.  See the NOTICE file
+#  distributed with this work for additional information
+#  regarding copyright ownership.  The ASF licenses this file
+#  to you under the Apache License, Version 2.0 (the
+#  "License"); you may not use this file except in compliance
+#  with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing,
+#  software distributed under the License is distributed on an
+#  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+#  KIND, either express or implied.  See the License for the
+#  specific language governing permissions and limitations
+#  under the License.
+
+"""multiproduct module"""
+from model import MultiProductEnvironmentProvider
+

Propchange: incubator/bloodhound/trunk/bloodhound_multiproduct/multiproduct/__init__.py
------------------------------------------------------------------------------
    svn:eol-style = native

Added: incubator/bloodhound/trunk/bloodhound_multiproduct/multiproduct/model.py
URL: http://svn.apache.org/viewvc/incubator/bloodhound/trunk/bloodhound_multiproduct/multiproduct/model.py?rev=1242755&view=auto
==============================================================================
--- incubator/bloodhound/trunk/bloodhound_multiproduct/multiproduct/model.py (added)
+++ incubator/bloodhound/trunk/bloodhound_multiproduct/multiproduct/model.py Fri Feb 10 13:18:16
2012
@@ -0,0 +1,298 @@
+
+#  Licensed to the Apache Software Foundation (ASF) under one
+#  or more contributor license agreements.  See the NOTICE file
+#  distributed with this work for additional information
+#  regarding copyright ownership.  The ASF licenses this file
+#  to you under the Apache License, Version 2.0 (the
+#  "License"); you may not use this file except in compliance
+#  with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing,
+#  software distributed under the License is distributed on an
+#  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+#  KIND, either express or implied.  See the License for the
+#  specific language governing permissions and limitations
+#  under the License.
+
+"""Models to support multi-product"""
+from trac.core import Component, TracError, implements
+from trac.resource import ResourceNotFound
+from trac.db import Table, Column, DatabaseManager
+from trac.env import IEnvironmentSetupParticipant
+
+DB_VERSION = 1
+DB_SYSTEM_KEY = 'bloodhound_multi_product_version'
+PLUGIN_NAME = 'Bloodhound multi product'
+class ModelBase(object):
+    """Base class for the models to factor out common features
+    Derived classes should provide a meta dictionary to describe the table like:
+    
+    _meta = {'table_name':'mytable',
+             'object_name':'WhatIWillCallMyselfInMessages',
+             'key_fields':['id','id2'],
+             'non_key_fields':['thing','anotherthing'],
+             }
+    """
+    
+    def __init__(self, env, keys=None):
+        """Initialisation requires an environment to be specified.
+        If keys are provided, the Model will initialise from the database
+        """
+        # make this impossible to instantiate without telling the class details
+        # about itself in the self.meta dictionary
+        self._old_data = {}
+        self._data = {}
+        self._exists = False
+        self._env = env
+        self._all_fields = self._meta['key_fields'] + self._meta['non_key_fields']
+        if keys is not None:
+            self._get_row(keys)
+        else:
+            self._update_from_row(None)
+    
+    def __getattr__(self, name):
+        """Overridden to allow table.field style field access."""
+        try:
+            if name in self._all_fields:
+                return self._data[name]
+        except KeyError:
+            raise AttributeError(name)
+        raise AttributeError(name)
+    
+    def __setattr__(self, name, value):
+        """Overridden to allow table.field = value style field setting."""
+        data = self.__dict__.get('data')
+        fields = self.__dict__.get('fields')
+        
+        if data and fields and name in fields:
+            self._data[name] = value
+        else:
+            dict.__setattr__(self, name, value)
+            
+    
+    def _update_from_row(self, row = None):
+        """uses a provided database row to update the model"""
+        fields = self._meta['key_fields']+self._meta['non_key_fields']
+        self._exists = row is not None
+        if row is None:
+            row = [None]*len(fields)
+        self._data = dict([(fields[i], row[i]) for i in range(len(row))])
+        self._old_data = {}
+        self._old_data.update(self._data)
+    
+    def _get_row(self, keys):
+        """queries the database and stores the result in the model"""
+        row = None
+        key_fields = self._meta['key_fields']
+        where = ','.join(['%s="%s"' % (k, keys[k]) for k in key_fields])
+        fields = ','.join(self._meta['key_fields']+self._meta['non_key_fields'])
+        sdata = {'fields':fields,
+                 'where':where}
+        sdata.update(self._meta)
+        
+        sql = """SELECT %(fields)s FROM %(table_name)s
+                 WHERE %(where)s""" % sdata
+        with self._env.db_query as db:
+            for row in db(sql):
+                self._update_from_row(row)
+                break
+            else:
+                raise ResourceNotFound('No %(object_name)s with %(where)s' %
+                                sdata)
+    
+    def delete(self):
+        """Deletes the matching record from the database"""
+        if not self._exists:
+            raise TracError('%(object_name)s does not exist' % self._meta)
+        sdata = {'where':','.join(['%s="%s"' % (k, self._data[k])
+                                   for k in self._meta['key_fields']])}
+        sdata.update(self._meta)
+        sql = """DELETE FROM %(table_name)s
+                 WHERE %(where)s""" % sdata
+        with self._env.db_transaction as db:
+            db(sql)
+            self._exists = False
+            self._data = dict([(k, None) for k in self._data.keys()])
+            self._old_data.update(self._data)
+    
+    def insert(self):
+        """Create new record in the database"""
+        if self._exists or len(self.select(self._env, 
+                                dict([(k,self._data[k])
+                                      for k in self._meta['key_fields']]))):
+            sdata = {'keys':','.join(['%s="%s"' % (k, self._data[k])
+                                     for k in self._meta['key_fields']])}
+            sdata.update(self._meta)
+            raise TracError('%(object_name)s %(keys)s already exists' %
+                            sdata)
+            
+        for key in self._meta['key_fields']:
+            if not self._data[key]:
+                sdata = {'key':key}
+                sdata.update(self._meta)
+                raise TracError('%(key)s required for %(object_name)s' %
+                                sdata)
+        fields = self._meta['key_fields']+self._meta['non_key_fields']
+        sdata = {'fields':','.join(fields),
+                 'values':','.join(['"%s"' % self._data[f] for f in fields])}
+        sdata.update(self._meta)
+        
+        sql = """INSERT INTO %(table_name)s (%(fields)s)
+                 VALUES (%(values)s)""" % sdata
+        with self._env.db_transaction as db:
+            db(sql)
+            self._exists = True
+            self._old_data.update(self._data)
+
+    def update(self):
+        """Update the matching record in the database"""
+        if not self._exists:
+            raise TracError('%(object_name)s does not exist' % self._meta)
+        for key in self._meta['key_fields']:
+            if self._data[key] != self._old_data[key]:
+                raise TracError('%s cannot be changed' % key)
+        
+        sdata = {'where':','.join(['%s="%s"' % (k, self._data[k])
+                                   for k in self._meta['key_fields']]),
+                 'values':','.join(['%s="%s"' % (k, self._data[k]) 
+                                    for k in self._meta['non_key_fields']])}
+        sdata.update(self._meta)
+        sql = """UPDATE %(table_name)s SET %(values)s
+                 WHERE %(where)s""" % sdata
+        with self._env.db_transaction as db:
+            db(sql)
+            self._old_data.update(self._data)
+    
+    @classmethod
+    def select(cls, env, where=None):
+        """Query the database to get a set of records back"""
+        rows = []
+        fields = cls._meta['key_fields']+cls._meta['non_key_fields']
+        
+        sdata = {'fields':','.join(fields),}
+        sdata.update(cls._meta)
+        sql = 'SELECT %(fields)s FROM %(table_name)s' % sdata
+        wherestr = ''
+        if where is not None:
+            wherestr = ' WHERE ' + ','.join(['%s="%s"' % (k, v) 
+                                             for k, v in where.iteritems()])
+        for row in env.db_query(sql+wherestr):
+            # we won't know which class we need until called
+            model = cls.__new__(cls)
+            data = dict([(fields[i], row[i]) for i in range(len(fields))])
+            model.__init__(env, data)
+            rows.append(model)
+        return rows
+
+class Product(ModelBase):
+    """The Product table"""
+    _meta = {'table_name':'bloodhound_product',
+            'object_name':'Product',
+            'key_fields':['prefix',],
+            'non_key_fields':['name', 'description', 'owner'],
+            }
+    
+    def delete(self, resources_to=None):
+        """ override the delete method so that we can move references to this
+        object to a new product """
+        if resources_to is not None:
+            new_product = Product(self._env, resources_to)
+            if not new_product._exists:
+                sdata = {'new_table':resources_to}
+                sdata.update(self._meta)
+                raise TracError('%(object_name)s %(new_table)s does not exist' %
+                                sdata)
+        super(Product, self).delete()
+        #find and update all resources that should move
+        where = {'product_id':self._data['prefix']}
+        for prm in ProductResourceMap.select(self._env, where=where):
+            prm._data['product_id'] = resources_to
+            prm.update()
+
+
+class ProductResourceMap(ModelBase):
+    """Table representing the mapping of resources to their product"""
+    _meta = {'table_name':'bloodhound_productresourcemap',
+            'object_name':'ProductResourceMapping',
+            'key_fields':['id',],
+            'non_key_fields':['product_id','resource_type','resource_id',],
+            }
+    
+    def reparent_resource(self, product=None):
+        """a specific function to update a record when it is to move product"""
+        if product is not None:
+            new_product = Product(self._env, product)
+            if not new_product._exists:
+                sdata = {'new_table':product}
+                sdata.update(self.meta)
+                raise TracError('%(object_name)s %(new_table)s does not exist' %
+                                sdata)
+        self._data['product_id'] = product
+        self.update()
+
+class MultiProductEnvironmentProvider(Component):
+    """Provides the means to create the db tables"""
+    
+    implements(IEnvironmentSetupParticipant)
+    
+    SCHEMA = [
+        Table('bloodhound_product', key = 'prefix') [
+            Column('prefix'),
+            Column('name'),
+            Column('description'),
+            Column('owner'),
+            ],
+        Table('bloodhound_productresourcemap', key = 'id') [
+            Column('id', auto_increment=True),
+            Column('product_id'),
+            Column('resource_type'),
+            Column('resource_id'),
+            ]
+        ]
+    
+    def get_version(self):
+        """Finds the current version of the bloodhound database schema"""
+        rows = self.env.db_query("""
+            SELECT value FROM system WHERE name = '%s'
+            """ % DB_SYSTEM_KEY)
+        return int(rows[0][0]) if rows else -1
+    
+    # IEnvironmentSetupParticipant methods
+    def environment_created(self):
+        """Insertion of any default data into the database."""
+        self.log.debug("creating environment for %s plugin." % PLUGIN_NAME)
+    
+    def environment_needs_upgrade(self, db_dummy=None):
+        """Detects if the installed db version matches the running system"""
+        db_installed_version = self.get_version()
+        
+        if db_installed_version > DB_VERSION:
+            raise TracError('''Current db version (%d) newer than supported by
+            this version of the %s (%d).''' % (db_installed_version,
+                                               PLUGIN_NAME,
+                                               DB_VERSION))
+        return db_installed_version < DB_VERSION
+    
+    def upgrade_environment(self, db_dummy=None):
+        """Installs or updates tables to current version"""
+        self.log.debug("upgrading existing environment for %s plugin." % 
+                       PLUGIN_NAME)
+        db_installed_version = self.get_version()
+        #cursor = db.cursor()
+        with self.env.db_transaction as db:
+            if db_installed_version < 0:
+                # Initial installation
+                db("""
+                    INSERT INTO system (name, value) VALUES ('%s','%s')
+                    """  % (DB_SYSTEM_KEY, DB_VERSION))
+                self.log.debug("creating initial db tables for %s plugin." % 
+                               PLUGIN_NAME)
+                
+                db_connector, _ = DatabaseManager(self.env)._get_connector()
+                for table in self.SCHEMA:
+                    for statement in db_connector.to_sql(table):
+                        db(statement)
+                db_installed_version = self.get_version()
+

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Added: incubator/bloodhound/trunk/bloodhound_multiproduct/setup.py
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--- incubator/bloodhound/trunk/bloodhound_multiproduct/setup.py (added)
+++ incubator/bloodhound/trunk/bloodhound_multiproduct/setup.py Fri Feb 10 13:18:16 2012
@@ -0,0 +1,29 @@
+
+#  Licensed to the Apache Software Foundation (ASF) under one
+#  or more contributor license agreements.  See the NOTICE file
+#  distributed with this work for additional information
+#  regarding copyright ownership.  The ASF licenses this file
+#  to you under the Apache License, Version 2.0 (the
+#  "License"); you may not use this file except in compliance
+#  with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing,
+#  software distributed under the License is distributed on an
+#  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+#  KIND, either express or implied.  See the License for the
+#  specific language governing permissions and limitations
+#  under the License.
+
+"""setup for multi product plugin"""
+from setuptools import setup
+
+setup(
+    name = 'BloodhoundMultiProduct',
+    version = '0.0.1',
+    packages = ['multiproduct', 'tests',],
+    entry_points = {'trac.plugins':['multiproduct = multiproduct',],},
+    test_suite = "tests",
+)
+

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Added: incubator/bloodhound/trunk/bloodhound_multiproduct/tests/__init__.py
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    (empty)

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Added: incubator/bloodhound/trunk/bloodhound_multiproduct/tests/model.py
URL: http://svn.apache.org/viewvc/incubator/bloodhound/trunk/bloodhound_multiproduct/tests/model.py?rev=1242755&view=auto
==============================================================================
--- incubator/bloodhound/trunk/bloodhound_multiproduct/tests/model.py (added)
+++ incubator/bloodhound/trunk/bloodhound_multiproduct/tests/model.py Fri Feb 10 13:18:16
2012
@@ -0,0 +1,161 @@
+
+#  Licensed to the Apache Software Foundation (ASF) under one
+#  or more contributor license agreements.  See the NOTICE file
+#  distributed with this work for additional information
+#  regarding copyright ownership.  The ASF licenses this file
+#  to you under the Apache License, Version 2.0 (the
+#  "License"); you may not use this file except in compliance
+#  with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing,
+#  software distributed under the License is distributed on an
+#  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+#  KIND, either express or implied.  See the License for the
+#  specific language governing permissions and limitations
+#  under the License.
+
+"""Tests for multiproduct/model.py"""
+import unittest
+import os
+import tempfile
+import shutil
+
+from sqlite3 import OperationalError
+
+from trac.test import EnvironmentStub
+from trac.core import TracError
+from multiproduct.model import Product
+from multiproduct.model import MultiProductEnvironmentProvider
+
+class ProductTestCase(unittest.TestCase):
+    """Unit tests covering the Product model"""
+    def setUp(self):
+        self.env = EnvironmentStub(enable=['trac.*', 'multiproduct.*'])
+        self.env.path = tempfile.mkdtemp('bh-product-tempenv')
+        
+        self.envprovider = MultiProductEnvironmentProvider(self.env)
+        try:
+            self.envprovider.upgrade_environment(self.env.db_transaction)
+        except OperationalError:
+            # table remains but database version is deleted
+            pass
+        
+        self.default_data = {'prefix':'tp',
+                             'name':'test project',
+                             'description':'a test project'}
+        
+        product = Product(self.env)
+        product._data.update(self.default_data)
+        product.insert()
+    
+    def tearDown(self):
+        shutil.rmtree(self.env.path)
+        self.env.reset_db()
+    
+    def test_select(self):
+        """tests that select can search Products by fields"""
+        
+        p2_data = {'prefix':'tp2',
+                   'name':'test project',
+                   'description':'a different test project'}
+        p3_data = {'prefix':'tp3',
+                   'name':'test project',
+                   'description':'test project'}
+        
+        product2 = Product(self.env)
+        product2._data.update(p2_data)
+        product3 = Product(self.env)
+        product3._data.update(p3_data)
+        
+        product2.insert()
+        product3.insert()
+        
+        products = list(Product.select(self.env, {'prefix':'tp'}))
+        self.assertEqual(1, len(products))
+        products = list(Product.select(self.env, {'name':'test project'}))
+        self.assertEqual(3, len(products))
+    
+    def test_update(self):
+        """tests that we can use update to push data to the database"""
+        product = list(Product.select(self.env, {'prefix':'tp'}))[0]
+        self.assertEqual('test project', product._data['name'])
+        
+        new_data = {'prefix':'tp', 
+                    'name':'updated', 
+                    'description':'nothing'}
+        product._data.update(new_data)
+        product.update()
+        
+        comp_product = list(Product.select(self.env, {'prefix':'tp'}))[0]
+        self.assertEqual('updated', comp_product._data['name'])
+    
+    def test_update_key_change(self):
+        """tests that we raise an error for attempting to update key fields"""
+        bad_data = {'prefix':'tp0', 
+                    'name':'update', 
+                    'description':'nothing'}
+        product = list(Product.select(self.env, {'prefix':'tp'}))[0]
+        product._data.update(bad_data)
+        self.assertRaises(TracError, product.update)
+    
+    def test_insert(self):
+        """test saving new Product"""
+        data = {'prefix':'new', 'name':'new', 'description':'new'}
+        product = Product(self.env)
+        product._data.update(data)
+        product.insert()
+        
+        check_products = list(Product.select(self.env, {'prefix':'new'}))
+        
+        self.assertEqual(product._data['prefix'],
+                         check_products[0]._data['prefix'])
+        self.assertEqual(1, len(check_products))
+    
+    def test_insert_duplicate_key(self):
+        """test attempted saving of Product with existing key fails"""
+        dupe_key_data = {'prefix':'tp',
+                         'name':'dupe',
+                         'description':'dupe primary key'}
+        product2 = Product(self.env)
+        product2._data.update(dupe_key_data)
+        self.assertRaises(TracError, product2.insert)
+    
+    def test_delete(self):
+        """test that we are able to delete Products"""
+        product = list(Product.select(self.env, {'prefix':'tp'}))[0]
+        product.delete()
+        
+        post = list(Product.select(self.env, {'prefix':'tp'}))
+        self.assertEqual(0, len(post))
+        
+    def test_delete_twice(self):
+        """test that we error when deleting twice on the same key"""
+        product = list(Product.select(self.env, {'prefix':'tp'}))[0]
+        product.delete()
+        
+        self.assertRaises(TracError, product.delete)
+    
+    def test_field_data_get(self):
+        """tests that we can use table.field syntax to get to the field data"""
+        prefix = self.default_data['prefix']
+        name = self.default_data['name']
+        description = self.default_data['description']
+        product = list(Product.select(self.env, {'prefix':prefix}))[0]
+        self.assertEqual(prefix, product.prefix)
+        self.assertEqual(name, product.name)
+        self.assertEqual(description, product.description)
+    
+    def test_field_set(self):
+        """tests that we can use table.field = something to set field data"""
+        prefix = self.default_data['prefix']
+        product = list(Product.select(self.env, {'prefix':prefix}))[0]
+        
+        new_description = 'test change of description'
+        product.description = new_description
+        self.assertEqual(new_description, product.description)
+
+if __name__ == '__main_':
+    unittest.main()
+

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