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authorCoprDistGit <infra@openeuler.org>2023-05-05 15:29:38 +0000
committerCoprDistGit <infra@openeuler.org>2023-05-05 15:29:38 +0000
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+/django-pgviews-redux-0.9.2.tar.gz
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+%global _empty_manifest_terminate_build 0
+Name: python-django-pgviews-redux
+Version: 0.9.2
+Release: 1
+Summary: Create and manage Postgres SQL Views in Django
+License: Public Domain
+URL: https://github.com/xelixdev/django-pgviews-redux
+Source0: https://mirrors.nju.edu.cn/pypi/web/packages/84/49/f6b41117fec8916040e460075d61c6c6b5837992c5fc25dd1b701811eea9/django-pgviews-redux-0.9.2.tar.gz
+BuildArch: noarch
+
+
+%description
+# SQL Views for Postgres
+
+[![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
+
+Adds first-class support for [PostgreSQL Views][pg-views] in the Django ORM.
+Fork of the original [django-pgviews][django-pgviews] by [mypebble][mypebble] with support for Django 3.2+.
+
+[pg-views]: http://www.postgresql.org/docs/9.1/static/sql-createview.html
+[django-pgviews]: https://github.com/mypebble/django-pgviews
+[mypebble]: https://github.com/mypebble
+
+## Installation
+
+Install via pip:
+
+ pip install django-pgviews-redux
+
+Add to installed applications in settings.py:
+
+```python
+INSTALLED_APPS = (
+ # ...
+ 'django_pgviews',
+)
+```
+
+## Examples
+
+```python
+from django.db import models
+
+from django_pgviews import view as pg
+
+
+class Customer(models.Model):
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+ is_preferred = models.BooleanField(default=False)
+
+ class Meta:
+ app_label = 'myapp'
+
+class PreferredCustomer(pg.View):
+ projection = ['myapp.Customer.*',]
+ dependencies = ['myapp.OtherView',]
+ sql = """SELECT * FROM myapp_customer WHERE is_preferred = TRUE;"""
+
+ class Meta:
+ app_label = 'myapp'
+ db_table = 'myapp_preferredcustomer'
+ managed = False
+```
+
+**NOTE** It is important that we include the `managed = False` in the `Meta` so
+Django 1.7 migrations don't attempt to create DB tables for this view.
+
+The SQL produced by this might look like:
+
+```postgresql
+CREATE VIEW myapp_preferredcustomer AS
+SELECT * FROM myapp_customer WHERE is_preferred = TRUE;
+```
+
+To create all your views, run ``python manage.py sync_pgviews``
+
+You can also specify field names, which will map onto fields in your View:
+
+```python
+from django_pgviews import view as pg
+
+
+VIEW_SQL = """
+ SELECT name, post_code FROM myapp_customer WHERE is_preferred = TRUE
+"""
+
+
+class PreferredCustomer(pg.View):
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+
+ sql = VIEW_SQL
+```
+
+## Usage
+
+To map onto a View, simply extend `pg_views.view.View`, assign SQL to the
+`sql` argument and define a `db_table`. You must _always_ set `managed = False`
+on the `Meta` class.
+
+Views can be created in a number of ways:
+
+1. Define fields to map onto the VIEW output
+2. Define a projection that describes the VIEW fields
+
+### Define Fields
+
+Define the fields as you would with any Django Model:
+
+```python
+from django_pgviews import view as pg
+
+
+VIEW_SQL = """
+ SELECT name, post_code FROM myapp_customer WHERE is_preferred = TRUE
+"""
+
+
+class PreferredCustomer(pg.View):
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+
+ sql = VIEW_SQL
+
+ class Meta:
+ managed = False
+ db_table = 'my_sql_view'
+```
+
+### Define Projection
+
+`django-pgviews` can take a projection to figure out what fields it needs to
+map onto for a view. To use this, set the `projection` attribute:
+
+```python
+from django_pgviews import view as pg
+
+
+class PreferredCustomer(pg.View):
+ projection = ['myapp.Customer.*',]
+ sql = """SELECT * FROM myapp_customer WHERE is_preferred = TRUE;"""
+
+ class Meta:
+ db_table = 'my_sql_view'
+ managed = False
+```
+
+This will take all fields on `myapp.Customer` and apply them to
+`PreferredCustomer`
+
+## Features
+
+### Updating Views
+
+Sometimes your models change and you need your Database Views to reflect the new
+data. Updating the View logic is as simple as modifying the underlying SQL and
+running:
+
+```
+python manage.py sync_pgviews --force
+```
+
+This will forcibly update any views that conflict with your new SQL.
+
+### Dependencies
+
+You can specify other views you depend on. This ensures the other views are
+installed beforehand. Using dependencies also ensures that your views get
+refreshed correctly when using `sync_pgviews --force`.
+
+**Note:** Views are synced after the Django application has migrated and adding
+models to the dependency list will cause syncing to fail.
+
+Example:
+
+```python
+from django_pgviews import view as pg
+
+class PreferredCustomer(pg.View):
+ dependencies = ['myapp.OtherView',]
+ sql = """SELECT * FROM myapp_customer WHERE is_preferred = TRUE;"""
+
+ class Meta:
+ app_label = 'myapp'
+ db_table = 'myapp_preferredcustomer'
+ managed = False
+```
+
+### Materialized Views
+
+Postgres 9.3 and up supports [materialized views](http://www.postgresql.org/docs/current/static/sql-creatematerializedview.html)
+which allow you to cache the results of views, potentially allowing them
+to load faster.
+
+However, you do need to manually refresh the view. To do this automatically,
+you can attach [signals](https://docs.djangoproject.com/en/1.8/ref/signals/)
+and call the refresh function.
+
+Example:
+
+```python
+from django_pgviews import view as pg
+
+
+VIEW_SQL = """
+ SELECT name, post_code FROM myapp_customer WHERE is_preferred = TRUE
+"""
+
+class Customer(models.Model):
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+ is_preferred = models.BooleanField(default=True)
+
+
+class PreferredCustomer(pg.MaterializedView):
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+
+ sql = VIEW_SQL
+
+
+@receiver(post_save, sender=Customer)
+def customer_saved(sender, action=None, instance=None, **kwargs):
+ PreferredCustomer.refresh()
+```
+
+#### Concurrent refresh
+
+Postgres 9.4 and up allow materialized views to be refreshed concurrently, without blocking reads, as long as a
+unique index exists on the materialized view. To enable concurrent refresh, specify the name of a column that can be
+used as a unique index on the materialized view. Unique index can be defined on more than one column of a materialized
+view. Once enabled, passing `concurrently=True` to the model's refresh method will result in postgres performing the
+refresh concurrently. (Note that the refresh method itself blocks until the refresh is complete; concurrent refresh is
+most useful when materialized views are updated in another process or thread.)
+
+Example:
+
+```python
+from django_pgviews import view as pg
+
+
+VIEW_SQL = """
+ SELECT id, name, post_code FROM myapp_customer WHERE is_preferred = TRUE
+"""
+
+class PreferredCustomer(pg.MaterializedView):
+ concurrent_index = 'id, post_code'
+ sql = VIEW_SQL
+
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+
+
+@receiver(post_save, sender=Customer)
+def customer_saved(sender, action=None, instance=None, **kwargs):
+ PreferredCustomer.refresh(concurrently=True)
+```
+
+#### Indexes
+
+As the materialized view isn't defined through the usual Django model fields, any indexes defined there won't be
+created on the materialized view. Luckily Django provides a Meta option called `indexes` which can be used to add custom
+indexes to models. `pg_views` supports defining indexes on materialized views using this option.
+
+In the following example, one index will be created, on the `name` column. The `db_index=True` on the field definition
+for `post_code` will get ignored.
+
+```python
+from django_pgviews import view as pg
+
+
+VIEW_SQL = """
+ SELECT id, name, post_code FROM myapp_customer WHERE is_preferred = TRUE
+"""
+
+class PreferredCustomer(pg.MaterializedView):
+ sql = VIEW_SQL
+
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20, db_index=True)
+
+ class Meta:
+ managed = False # don't forget this, otherwise Django will think it's a regular model
+ indexes = [
+ models.Index(fields=["name"]),
+ ]
+```
+
+#### WITH NO DATA
+
+Materialized views can be created either with or without data. By default, they are created with data, however
+`pg_views` supports creating materialized views without data, by defining `with_data = False` for the
+`pg.MaterializedView` class. Such views then do not support querying until the first
+refresh (raising `django.db.utils.OperationalError`).
+
+Example:
+
+```python
+from django_pgviews import view as pg
+
+class PreferredCustomer(pg.MaterializedView):
+ concurrent_index = 'id, post_code'
+ sql = """
+ SELECT id, name, post_code FROM myapp_customer WHERE is_preferred = TRUE
+ """
+ with_data = False
+
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+```
+
+#### Conditional materialized views recreate
+
+Since all materialized views are recreated on running `migrate`, it can lead to obsolete recreations even if there
+were no changes to the definition of the view. To prevent this, version 0.7.0 and higher contain a feature which
+checks existing materialized view definition in the database (if the mat. view exists at all) and compares the
+definition with the one currently defined in your `pg.MaterializedView` subclass. If the definition matches
+exactly, the re-create of materialized view is skipped.
+
+This feature is enabled by setting the `MATERIALIZED_VIEWS_CHECK_SQL_CHANGED` in your Django settings to `True`,
+which enables the feature when running `migrate`. The command `sync_pgviews` uses this setting as well,
+however it also has switches `--enable-materialized-views-check-sql-changed` and
+`--disable-materialized-views-check-sql-changed` which override this setting for that command.
+
+This feature also takes into account indexes. When a view is deemed not needing recreating, the process will still
+check the indexes on the table and delete any extra indexes and create any missing indexes. This reconciliation
+is done through the index name, so if you use custom names for your indexes, it might happen that it won't get updated
+on change of the content but not the name.
+
+### Custom Schema
+
+You can define any table name you wish for your views. They can even live inside your own custom
+[PostgreSQL schema](http://www.postgresql.org/docs/current/static/ddl-schemas.html).
+
+```python
+from django_pgviews import view as pg
+
+
+class PreferredCustomer(pg.View):
+ sql = """SELECT * FROM myapp_customer WHERE is_preferred = TRUE;"""
+
+ class Meta:
+ db_table = 'my_custom_schema.preferredcustomer'
+ managed = False
+```
+
+### Dynamic View SQL
+
+If you need a dynamic view SQL (for example if it needs a value from settings in it), you can override the `run_sql`
+classmethod on the view to return the SQL. The method should return a namedtuple `ViewSQL`, which contains the query
+and potentially the params to `cursor.execute` call. Params should be either None or a list of parameters for the query.
+
+```python
+from django.conf import settings
+from django_pgviews import view as pg
+
+
+class PreferredCustomer(pg.View):
+ @classmethod
+ def get_sql(cls):
+ return pg.ViewSQL(
+ """SELECT * FROM myapp_customer WHERE is_preferred = TRUE and created_at >= %s;""",
+ [settings.MIN_PREFERRED_CUSTOMER_CREATED_AT]
+ )
+
+ class Meta:
+ db_table = 'preferredcustomer'
+ managed = False
+```
+
+### Sync Listeners
+
+django-pgviews 0.5.0 adds the ability to listen to when a `post_sync` event has
+occurred.
+
+#### `view_synced`
+
+Fired every time a VIEW is synchronised with the database.
+
+Provides args:
+* `sender` - View Class
+* `update` - Whether the view to be updated
+* `force` - Whether `force` was passed
+* `status` - The result of creating the view e.g. `EXISTS`, `FORCE_REQUIRED`
+* `has_changed` - Whether the view had to change
+
+#### `all_views_synced`
+
+Sent after all Postgres VIEWs are synchronised.
+
+Provides args:
+* `sender` - Always `None`
+
+
+### Multiple databases
+
+django-pgviews can use multiple databases. Similar to Django's `migrate`
+management command, our commands (`clear_pgviews`, `refresh_pgviews`,
+`sync_pgviews`) operate on one database at a time. You can specify which
+database to synchronize by providing the `--database` option. For example:
+
+```shell
+python manage.py sync_pgviews # uses default db
+python manage.py sync_pgviews --database=myotherdb
+```
+
+Unless using custom routers, django-pgviews will sync all views to the specified
+database. If you want to interact with multiple databases automatically, you'll
+need to take some additional steps. Please refer to Django's [Automatic database
+routing](https://docs.djangoproject.com/en/3.2/topics/db/multi-db/#automatic-database-routing)
+to pin views to specific databases.
+
+
+## Django Compatibility
+
+<table>
+ <thead>
+ <tr>
+ <th>Django Version</th>
+ <th>Django-PGView Version</th>
+ </tr>
+ </thead>
+ <tbody>
+ <tr>
+ <td>1.4 and down</td>
+ <td>Unsupported</td>
+ </tr>
+ <tr>
+ <td>1.5</td>
+ <td>0.0.1</td>
+ </tr>
+ <tr>
+ <td>1.6</td>
+ <td>0.0.3</td>
+ </tr>
+ <tr>
+ <td>1.7</td>
+ <td>0.0.4</td>
+ </tr>
+ <tr>
+ <td>1.9</td>
+ <td>0.1.0</td>
+ </tr>
+ <tr>
+ <td>1.10</td>
+ <td>0.2.0</td>
+ </tr>
+ <tr>
+ <td>2.2</td>
+ <td>0.6.0</td>
+ </tr>
+ <tr>
+ <td>3.0</td>
+ <td>0.6.0</td>
+ </tr>
+ <tr>
+ <td>3.1</td>
+ <td>0.6.1</td>
+ <tr>
+ <td>3.2</td>
+ <td>0.7.1</td>
+ </tr>
+ <tr>
+ <td>4.0</td>
+ <td>0.8.1</td>
+ </tr>
+ <tr>
+ <td>4.1</td>
+ <td>0.8.4</td>
+ </tr>
+ <tr>
+ <td>4.2</td>
+ <td>0.9.2</td>
+ </tr>
+ </tbody>
+</table>
+
+## Python 3 Support
+
+Django PGViews Redux only officially supports Python 3.7+, it might work on 3.6, but there's no guarantees.
+
+
+
+
+%package -n python3-django-pgviews-redux
+Summary: Create and manage Postgres SQL Views in Django
+Provides: python-django-pgviews-redux
+BuildRequires: python3-devel
+BuildRequires: python3-setuptools
+BuildRequires: python3-pip
+%description -n python3-django-pgviews-redux
+# SQL Views for Postgres
+
+[![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
+
+Adds first-class support for [PostgreSQL Views][pg-views] in the Django ORM.
+Fork of the original [django-pgviews][django-pgviews] by [mypebble][mypebble] with support for Django 3.2+.
+
+[pg-views]: http://www.postgresql.org/docs/9.1/static/sql-createview.html
+[django-pgviews]: https://github.com/mypebble/django-pgviews
+[mypebble]: https://github.com/mypebble
+
+## Installation
+
+Install via pip:
+
+ pip install django-pgviews-redux
+
+Add to installed applications in settings.py:
+
+```python
+INSTALLED_APPS = (
+ # ...
+ 'django_pgviews',
+)
+```
+
+## Examples
+
+```python
+from django.db import models
+
+from django_pgviews import view as pg
+
+
+class Customer(models.Model):
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+ is_preferred = models.BooleanField(default=False)
+
+ class Meta:
+ app_label = 'myapp'
+
+class PreferredCustomer(pg.View):
+ projection = ['myapp.Customer.*',]
+ dependencies = ['myapp.OtherView',]
+ sql = """SELECT * FROM myapp_customer WHERE is_preferred = TRUE;"""
+
+ class Meta:
+ app_label = 'myapp'
+ db_table = 'myapp_preferredcustomer'
+ managed = False
+```
+
+**NOTE** It is important that we include the `managed = False` in the `Meta` so
+Django 1.7 migrations don't attempt to create DB tables for this view.
+
+The SQL produced by this might look like:
+
+```postgresql
+CREATE VIEW myapp_preferredcustomer AS
+SELECT * FROM myapp_customer WHERE is_preferred = TRUE;
+```
+
+To create all your views, run ``python manage.py sync_pgviews``
+
+You can also specify field names, which will map onto fields in your View:
+
+```python
+from django_pgviews import view as pg
+
+
+VIEW_SQL = """
+ SELECT name, post_code FROM myapp_customer WHERE is_preferred = TRUE
+"""
+
+
+class PreferredCustomer(pg.View):
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+
+ sql = VIEW_SQL
+```
+
+## Usage
+
+To map onto a View, simply extend `pg_views.view.View`, assign SQL to the
+`sql` argument and define a `db_table`. You must _always_ set `managed = False`
+on the `Meta` class.
+
+Views can be created in a number of ways:
+
+1. Define fields to map onto the VIEW output
+2. Define a projection that describes the VIEW fields
+
+### Define Fields
+
+Define the fields as you would with any Django Model:
+
+```python
+from django_pgviews import view as pg
+
+
+VIEW_SQL = """
+ SELECT name, post_code FROM myapp_customer WHERE is_preferred = TRUE
+"""
+
+
+class PreferredCustomer(pg.View):
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+
+ sql = VIEW_SQL
+
+ class Meta:
+ managed = False
+ db_table = 'my_sql_view'
+```
+
+### Define Projection
+
+`django-pgviews` can take a projection to figure out what fields it needs to
+map onto for a view. To use this, set the `projection` attribute:
+
+```python
+from django_pgviews import view as pg
+
+
+class PreferredCustomer(pg.View):
+ projection = ['myapp.Customer.*',]
+ sql = """SELECT * FROM myapp_customer WHERE is_preferred = TRUE;"""
+
+ class Meta:
+ db_table = 'my_sql_view'
+ managed = False
+```
+
+This will take all fields on `myapp.Customer` and apply them to
+`PreferredCustomer`
+
+## Features
+
+### Updating Views
+
+Sometimes your models change and you need your Database Views to reflect the new
+data. Updating the View logic is as simple as modifying the underlying SQL and
+running:
+
+```
+python manage.py sync_pgviews --force
+```
+
+This will forcibly update any views that conflict with your new SQL.
+
+### Dependencies
+
+You can specify other views you depend on. This ensures the other views are
+installed beforehand. Using dependencies also ensures that your views get
+refreshed correctly when using `sync_pgviews --force`.
+
+**Note:** Views are synced after the Django application has migrated and adding
+models to the dependency list will cause syncing to fail.
+
+Example:
+
+```python
+from django_pgviews import view as pg
+
+class PreferredCustomer(pg.View):
+ dependencies = ['myapp.OtherView',]
+ sql = """SELECT * FROM myapp_customer WHERE is_preferred = TRUE;"""
+
+ class Meta:
+ app_label = 'myapp'
+ db_table = 'myapp_preferredcustomer'
+ managed = False
+```
+
+### Materialized Views
+
+Postgres 9.3 and up supports [materialized views](http://www.postgresql.org/docs/current/static/sql-creatematerializedview.html)
+which allow you to cache the results of views, potentially allowing them
+to load faster.
+
+However, you do need to manually refresh the view. To do this automatically,
+you can attach [signals](https://docs.djangoproject.com/en/1.8/ref/signals/)
+and call the refresh function.
+
+Example:
+
+```python
+from django_pgviews import view as pg
+
+
+VIEW_SQL = """
+ SELECT name, post_code FROM myapp_customer WHERE is_preferred = TRUE
+"""
+
+class Customer(models.Model):
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+ is_preferred = models.BooleanField(default=True)
+
+
+class PreferredCustomer(pg.MaterializedView):
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+
+ sql = VIEW_SQL
+
+
+@receiver(post_save, sender=Customer)
+def customer_saved(sender, action=None, instance=None, **kwargs):
+ PreferredCustomer.refresh()
+```
+
+#### Concurrent refresh
+
+Postgres 9.4 and up allow materialized views to be refreshed concurrently, without blocking reads, as long as a
+unique index exists on the materialized view. To enable concurrent refresh, specify the name of a column that can be
+used as a unique index on the materialized view. Unique index can be defined on more than one column of a materialized
+view. Once enabled, passing `concurrently=True` to the model's refresh method will result in postgres performing the
+refresh concurrently. (Note that the refresh method itself blocks until the refresh is complete; concurrent refresh is
+most useful when materialized views are updated in another process or thread.)
+
+Example:
+
+```python
+from django_pgviews import view as pg
+
+
+VIEW_SQL = """
+ SELECT id, name, post_code FROM myapp_customer WHERE is_preferred = TRUE
+"""
+
+class PreferredCustomer(pg.MaterializedView):
+ concurrent_index = 'id, post_code'
+ sql = VIEW_SQL
+
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+
+
+@receiver(post_save, sender=Customer)
+def customer_saved(sender, action=None, instance=None, **kwargs):
+ PreferredCustomer.refresh(concurrently=True)
+```
+
+#### Indexes
+
+As the materialized view isn't defined through the usual Django model fields, any indexes defined there won't be
+created on the materialized view. Luckily Django provides a Meta option called `indexes` which can be used to add custom
+indexes to models. `pg_views` supports defining indexes on materialized views using this option.
+
+In the following example, one index will be created, on the `name` column. The `db_index=True` on the field definition
+for `post_code` will get ignored.
+
+```python
+from django_pgviews import view as pg
+
+
+VIEW_SQL = """
+ SELECT id, name, post_code FROM myapp_customer WHERE is_preferred = TRUE
+"""
+
+class PreferredCustomer(pg.MaterializedView):
+ sql = VIEW_SQL
+
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20, db_index=True)
+
+ class Meta:
+ managed = False # don't forget this, otherwise Django will think it's a regular model
+ indexes = [
+ models.Index(fields=["name"]),
+ ]
+```
+
+#### WITH NO DATA
+
+Materialized views can be created either with or without data. By default, they are created with data, however
+`pg_views` supports creating materialized views without data, by defining `with_data = False` for the
+`pg.MaterializedView` class. Such views then do not support querying until the first
+refresh (raising `django.db.utils.OperationalError`).
+
+Example:
+
+```python
+from django_pgviews import view as pg
+
+class PreferredCustomer(pg.MaterializedView):
+ concurrent_index = 'id, post_code'
+ sql = """
+ SELECT id, name, post_code FROM myapp_customer WHERE is_preferred = TRUE
+ """
+ with_data = False
+
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+```
+
+#### Conditional materialized views recreate
+
+Since all materialized views are recreated on running `migrate`, it can lead to obsolete recreations even if there
+were no changes to the definition of the view. To prevent this, version 0.7.0 and higher contain a feature which
+checks existing materialized view definition in the database (if the mat. view exists at all) and compares the
+definition with the one currently defined in your `pg.MaterializedView` subclass. If the definition matches
+exactly, the re-create of materialized view is skipped.
+
+This feature is enabled by setting the `MATERIALIZED_VIEWS_CHECK_SQL_CHANGED` in your Django settings to `True`,
+which enables the feature when running `migrate`. The command `sync_pgviews` uses this setting as well,
+however it also has switches `--enable-materialized-views-check-sql-changed` and
+`--disable-materialized-views-check-sql-changed` which override this setting for that command.
+
+This feature also takes into account indexes. When a view is deemed not needing recreating, the process will still
+check the indexes on the table and delete any extra indexes and create any missing indexes. This reconciliation
+is done through the index name, so if you use custom names for your indexes, it might happen that it won't get updated
+on change of the content but not the name.
+
+### Custom Schema
+
+You can define any table name you wish for your views. They can even live inside your own custom
+[PostgreSQL schema](http://www.postgresql.org/docs/current/static/ddl-schemas.html).
+
+```python
+from django_pgviews import view as pg
+
+
+class PreferredCustomer(pg.View):
+ sql = """SELECT * FROM myapp_customer WHERE is_preferred = TRUE;"""
+
+ class Meta:
+ db_table = 'my_custom_schema.preferredcustomer'
+ managed = False
+```
+
+### Dynamic View SQL
+
+If you need a dynamic view SQL (for example if it needs a value from settings in it), you can override the `run_sql`
+classmethod on the view to return the SQL. The method should return a namedtuple `ViewSQL`, which contains the query
+and potentially the params to `cursor.execute` call. Params should be either None or a list of parameters for the query.
+
+```python
+from django.conf import settings
+from django_pgviews import view as pg
+
+
+class PreferredCustomer(pg.View):
+ @classmethod
+ def get_sql(cls):
+ return pg.ViewSQL(
+ """SELECT * FROM myapp_customer WHERE is_preferred = TRUE and created_at >= %s;""",
+ [settings.MIN_PREFERRED_CUSTOMER_CREATED_AT]
+ )
+
+ class Meta:
+ db_table = 'preferredcustomer'
+ managed = False
+```
+
+### Sync Listeners
+
+django-pgviews 0.5.0 adds the ability to listen to when a `post_sync` event has
+occurred.
+
+#### `view_synced`
+
+Fired every time a VIEW is synchronised with the database.
+
+Provides args:
+* `sender` - View Class
+* `update` - Whether the view to be updated
+* `force` - Whether `force` was passed
+* `status` - The result of creating the view e.g. `EXISTS`, `FORCE_REQUIRED`
+* `has_changed` - Whether the view had to change
+
+#### `all_views_synced`
+
+Sent after all Postgres VIEWs are synchronised.
+
+Provides args:
+* `sender` - Always `None`
+
+
+### Multiple databases
+
+django-pgviews can use multiple databases. Similar to Django's `migrate`
+management command, our commands (`clear_pgviews`, `refresh_pgviews`,
+`sync_pgviews`) operate on one database at a time. You can specify which
+database to synchronize by providing the `--database` option. For example:
+
+```shell
+python manage.py sync_pgviews # uses default db
+python manage.py sync_pgviews --database=myotherdb
+```
+
+Unless using custom routers, django-pgviews will sync all views to the specified
+database. If you want to interact with multiple databases automatically, you'll
+need to take some additional steps. Please refer to Django's [Automatic database
+routing](https://docs.djangoproject.com/en/3.2/topics/db/multi-db/#automatic-database-routing)
+to pin views to specific databases.
+
+
+## Django Compatibility
+
+<table>
+ <thead>
+ <tr>
+ <th>Django Version</th>
+ <th>Django-PGView Version</th>
+ </tr>
+ </thead>
+ <tbody>
+ <tr>
+ <td>1.4 and down</td>
+ <td>Unsupported</td>
+ </tr>
+ <tr>
+ <td>1.5</td>
+ <td>0.0.1</td>
+ </tr>
+ <tr>
+ <td>1.6</td>
+ <td>0.0.3</td>
+ </tr>
+ <tr>
+ <td>1.7</td>
+ <td>0.0.4</td>
+ </tr>
+ <tr>
+ <td>1.9</td>
+ <td>0.1.0</td>
+ </tr>
+ <tr>
+ <td>1.10</td>
+ <td>0.2.0</td>
+ </tr>
+ <tr>
+ <td>2.2</td>
+ <td>0.6.0</td>
+ </tr>
+ <tr>
+ <td>3.0</td>
+ <td>0.6.0</td>
+ </tr>
+ <tr>
+ <td>3.1</td>
+ <td>0.6.1</td>
+ <tr>
+ <td>3.2</td>
+ <td>0.7.1</td>
+ </tr>
+ <tr>
+ <td>4.0</td>
+ <td>0.8.1</td>
+ </tr>
+ <tr>
+ <td>4.1</td>
+ <td>0.8.4</td>
+ </tr>
+ <tr>
+ <td>4.2</td>
+ <td>0.9.2</td>
+ </tr>
+ </tbody>
+</table>
+
+## Python 3 Support
+
+Django PGViews Redux only officially supports Python 3.7+, it might work on 3.6, but there's no guarantees.
+
+
+
+
+%package help
+Summary: Development documents and examples for django-pgviews-redux
+Provides: python3-django-pgviews-redux-doc
+%description help
+# SQL Views for Postgres
+
+[![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
+
+Adds first-class support for [PostgreSQL Views][pg-views] in the Django ORM.
+Fork of the original [django-pgviews][django-pgviews] by [mypebble][mypebble] with support for Django 3.2+.
+
+[pg-views]: http://www.postgresql.org/docs/9.1/static/sql-createview.html
+[django-pgviews]: https://github.com/mypebble/django-pgviews
+[mypebble]: https://github.com/mypebble
+
+## Installation
+
+Install via pip:
+
+ pip install django-pgviews-redux
+
+Add to installed applications in settings.py:
+
+```python
+INSTALLED_APPS = (
+ # ...
+ 'django_pgviews',
+)
+```
+
+## Examples
+
+```python
+from django.db import models
+
+from django_pgviews import view as pg
+
+
+class Customer(models.Model):
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+ is_preferred = models.BooleanField(default=False)
+
+ class Meta:
+ app_label = 'myapp'
+
+class PreferredCustomer(pg.View):
+ projection = ['myapp.Customer.*',]
+ dependencies = ['myapp.OtherView',]
+ sql = """SELECT * FROM myapp_customer WHERE is_preferred = TRUE;"""
+
+ class Meta:
+ app_label = 'myapp'
+ db_table = 'myapp_preferredcustomer'
+ managed = False
+```
+
+**NOTE** It is important that we include the `managed = False` in the `Meta` so
+Django 1.7 migrations don't attempt to create DB tables for this view.
+
+The SQL produced by this might look like:
+
+```postgresql
+CREATE VIEW myapp_preferredcustomer AS
+SELECT * FROM myapp_customer WHERE is_preferred = TRUE;
+```
+
+To create all your views, run ``python manage.py sync_pgviews``
+
+You can also specify field names, which will map onto fields in your View:
+
+```python
+from django_pgviews import view as pg
+
+
+VIEW_SQL = """
+ SELECT name, post_code FROM myapp_customer WHERE is_preferred = TRUE
+"""
+
+
+class PreferredCustomer(pg.View):
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+
+ sql = VIEW_SQL
+```
+
+## Usage
+
+To map onto a View, simply extend `pg_views.view.View`, assign SQL to the
+`sql` argument and define a `db_table`. You must _always_ set `managed = False`
+on the `Meta` class.
+
+Views can be created in a number of ways:
+
+1. Define fields to map onto the VIEW output
+2. Define a projection that describes the VIEW fields
+
+### Define Fields
+
+Define the fields as you would with any Django Model:
+
+```python
+from django_pgviews import view as pg
+
+
+VIEW_SQL = """
+ SELECT name, post_code FROM myapp_customer WHERE is_preferred = TRUE
+"""
+
+
+class PreferredCustomer(pg.View):
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+
+ sql = VIEW_SQL
+
+ class Meta:
+ managed = False
+ db_table = 'my_sql_view'
+```
+
+### Define Projection
+
+`django-pgviews` can take a projection to figure out what fields it needs to
+map onto for a view. To use this, set the `projection` attribute:
+
+```python
+from django_pgviews import view as pg
+
+
+class PreferredCustomer(pg.View):
+ projection = ['myapp.Customer.*',]
+ sql = """SELECT * FROM myapp_customer WHERE is_preferred = TRUE;"""
+
+ class Meta:
+ db_table = 'my_sql_view'
+ managed = False
+```
+
+This will take all fields on `myapp.Customer` and apply them to
+`PreferredCustomer`
+
+## Features
+
+### Updating Views
+
+Sometimes your models change and you need your Database Views to reflect the new
+data. Updating the View logic is as simple as modifying the underlying SQL and
+running:
+
+```
+python manage.py sync_pgviews --force
+```
+
+This will forcibly update any views that conflict with your new SQL.
+
+### Dependencies
+
+You can specify other views you depend on. This ensures the other views are
+installed beforehand. Using dependencies also ensures that your views get
+refreshed correctly when using `sync_pgviews --force`.
+
+**Note:** Views are synced after the Django application has migrated and adding
+models to the dependency list will cause syncing to fail.
+
+Example:
+
+```python
+from django_pgviews import view as pg
+
+class PreferredCustomer(pg.View):
+ dependencies = ['myapp.OtherView',]
+ sql = """SELECT * FROM myapp_customer WHERE is_preferred = TRUE;"""
+
+ class Meta:
+ app_label = 'myapp'
+ db_table = 'myapp_preferredcustomer'
+ managed = False
+```
+
+### Materialized Views
+
+Postgres 9.3 and up supports [materialized views](http://www.postgresql.org/docs/current/static/sql-creatematerializedview.html)
+which allow you to cache the results of views, potentially allowing them
+to load faster.
+
+However, you do need to manually refresh the view. To do this automatically,
+you can attach [signals](https://docs.djangoproject.com/en/1.8/ref/signals/)
+and call the refresh function.
+
+Example:
+
+```python
+from django_pgviews import view as pg
+
+
+VIEW_SQL = """
+ SELECT name, post_code FROM myapp_customer WHERE is_preferred = TRUE
+"""
+
+class Customer(models.Model):
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+ is_preferred = models.BooleanField(default=True)
+
+
+class PreferredCustomer(pg.MaterializedView):
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+
+ sql = VIEW_SQL
+
+
+@receiver(post_save, sender=Customer)
+def customer_saved(sender, action=None, instance=None, **kwargs):
+ PreferredCustomer.refresh()
+```
+
+#### Concurrent refresh
+
+Postgres 9.4 and up allow materialized views to be refreshed concurrently, without blocking reads, as long as a
+unique index exists on the materialized view. To enable concurrent refresh, specify the name of a column that can be
+used as a unique index on the materialized view. Unique index can be defined on more than one column of a materialized
+view. Once enabled, passing `concurrently=True` to the model's refresh method will result in postgres performing the
+refresh concurrently. (Note that the refresh method itself blocks until the refresh is complete; concurrent refresh is
+most useful when materialized views are updated in another process or thread.)
+
+Example:
+
+```python
+from django_pgviews import view as pg
+
+
+VIEW_SQL = """
+ SELECT id, name, post_code FROM myapp_customer WHERE is_preferred = TRUE
+"""
+
+class PreferredCustomer(pg.MaterializedView):
+ concurrent_index = 'id, post_code'
+ sql = VIEW_SQL
+
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+
+
+@receiver(post_save, sender=Customer)
+def customer_saved(sender, action=None, instance=None, **kwargs):
+ PreferredCustomer.refresh(concurrently=True)
+```
+
+#### Indexes
+
+As the materialized view isn't defined through the usual Django model fields, any indexes defined there won't be
+created on the materialized view. Luckily Django provides a Meta option called `indexes` which can be used to add custom
+indexes to models. `pg_views` supports defining indexes on materialized views using this option.
+
+In the following example, one index will be created, on the `name` column. The `db_index=True` on the field definition
+for `post_code` will get ignored.
+
+```python
+from django_pgviews import view as pg
+
+
+VIEW_SQL = """
+ SELECT id, name, post_code FROM myapp_customer WHERE is_preferred = TRUE
+"""
+
+class PreferredCustomer(pg.MaterializedView):
+ sql = VIEW_SQL
+
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20, db_index=True)
+
+ class Meta:
+ managed = False # don't forget this, otherwise Django will think it's a regular model
+ indexes = [
+ models.Index(fields=["name"]),
+ ]
+```
+
+#### WITH NO DATA
+
+Materialized views can be created either with or without data. By default, they are created with data, however
+`pg_views` supports creating materialized views without data, by defining `with_data = False` for the
+`pg.MaterializedView` class. Such views then do not support querying until the first
+refresh (raising `django.db.utils.OperationalError`).
+
+Example:
+
+```python
+from django_pgviews import view as pg
+
+class PreferredCustomer(pg.MaterializedView):
+ concurrent_index = 'id, post_code'
+ sql = """
+ SELECT id, name, post_code FROM myapp_customer WHERE is_preferred = TRUE
+ """
+ with_data = False
+
+ name = models.CharField(max_length=100)
+ post_code = models.CharField(max_length=20)
+```
+
+#### Conditional materialized views recreate
+
+Since all materialized views are recreated on running `migrate`, it can lead to obsolete recreations even if there
+were no changes to the definition of the view. To prevent this, version 0.7.0 and higher contain a feature which
+checks existing materialized view definition in the database (if the mat. view exists at all) and compares the
+definition with the one currently defined in your `pg.MaterializedView` subclass. If the definition matches
+exactly, the re-create of materialized view is skipped.
+
+This feature is enabled by setting the `MATERIALIZED_VIEWS_CHECK_SQL_CHANGED` in your Django settings to `True`,
+which enables the feature when running `migrate`. The command `sync_pgviews` uses this setting as well,
+however it also has switches `--enable-materialized-views-check-sql-changed` and
+`--disable-materialized-views-check-sql-changed` which override this setting for that command.
+
+This feature also takes into account indexes. When a view is deemed not needing recreating, the process will still
+check the indexes on the table and delete any extra indexes and create any missing indexes. This reconciliation
+is done through the index name, so if you use custom names for your indexes, it might happen that it won't get updated
+on change of the content but not the name.
+
+### Custom Schema
+
+You can define any table name you wish for your views. They can even live inside your own custom
+[PostgreSQL schema](http://www.postgresql.org/docs/current/static/ddl-schemas.html).
+
+```python
+from django_pgviews import view as pg
+
+
+class PreferredCustomer(pg.View):
+ sql = """SELECT * FROM myapp_customer WHERE is_preferred = TRUE;"""
+
+ class Meta:
+ db_table = 'my_custom_schema.preferredcustomer'
+ managed = False
+```
+
+### Dynamic View SQL
+
+If you need a dynamic view SQL (for example if it needs a value from settings in it), you can override the `run_sql`
+classmethod on the view to return the SQL. The method should return a namedtuple `ViewSQL`, which contains the query
+and potentially the params to `cursor.execute` call. Params should be either None or a list of parameters for the query.
+
+```python
+from django.conf import settings
+from django_pgviews import view as pg
+
+
+class PreferredCustomer(pg.View):
+ @classmethod
+ def get_sql(cls):
+ return pg.ViewSQL(
+ """SELECT * FROM myapp_customer WHERE is_preferred = TRUE and created_at >= %s;""",
+ [settings.MIN_PREFERRED_CUSTOMER_CREATED_AT]
+ )
+
+ class Meta:
+ db_table = 'preferredcustomer'
+ managed = False
+```
+
+### Sync Listeners
+
+django-pgviews 0.5.0 adds the ability to listen to when a `post_sync` event has
+occurred.
+
+#### `view_synced`
+
+Fired every time a VIEW is synchronised with the database.
+
+Provides args:
+* `sender` - View Class
+* `update` - Whether the view to be updated
+* `force` - Whether `force` was passed
+* `status` - The result of creating the view e.g. `EXISTS`, `FORCE_REQUIRED`
+* `has_changed` - Whether the view had to change
+
+#### `all_views_synced`
+
+Sent after all Postgres VIEWs are synchronised.
+
+Provides args:
+* `sender` - Always `None`
+
+
+### Multiple databases
+
+django-pgviews can use multiple databases. Similar to Django's `migrate`
+management command, our commands (`clear_pgviews`, `refresh_pgviews`,
+`sync_pgviews`) operate on one database at a time. You can specify which
+database to synchronize by providing the `--database` option. For example:
+
+```shell
+python manage.py sync_pgviews # uses default db
+python manage.py sync_pgviews --database=myotherdb
+```
+
+Unless using custom routers, django-pgviews will sync all views to the specified
+database. If you want to interact with multiple databases automatically, you'll
+need to take some additional steps. Please refer to Django's [Automatic database
+routing](https://docs.djangoproject.com/en/3.2/topics/db/multi-db/#automatic-database-routing)
+to pin views to specific databases.
+
+
+## Django Compatibility
+
+<table>
+ <thead>
+ <tr>
+ <th>Django Version</th>
+ <th>Django-PGView Version</th>
+ </tr>
+ </thead>
+ <tbody>
+ <tr>
+ <td>1.4 and down</td>
+ <td>Unsupported</td>
+ </tr>
+ <tr>
+ <td>1.5</td>
+ <td>0.0.1</td>
+ </tr>
+ <tr>
+ <td>1.6</td>
+ <td>0.0.3</td>
+ </tr>
+ <tr>
+ <td>1.7</td>
+ <td>0.0.4</td>
+ </tr>
+ <tr>
+ <td>1.9</td>
+ <td>0.1.0</td>
+ </tr>
+ <tr>
+ <td>1.10</td>
+ <td>0.2.0</td>
+ </tr>
+ <tr>
+ <td>2.2</td>
+ <td>0.6.0</td>
+ </tr>
+ <tr>
+ <td>3.0</td>
+ <td>0.6.0</td>
+ </tr>
+ <tr>
+ <td>3.1</td>
+ <td>0.6.1</td>
+ <tr>
+ <td>3.2</td>
+ <td>0.7.1</td>
+ </tr>
+ <tr>
+ <td>4.0</td>
+ <td>0.8.1</td>
+ </tr>
+ <tr>
+ <td>4.1</td>
+ <td>0.8.4</td>
+ </tr>
+ <tr>
+ <td>4.2</td>
+ <td>0.9.2</td>
+ </tr>
+ </tbody>
+</table>
+
+## Python 3 Support
+
+Django PGViews Redux only officially supports Python 3.7+, it might work on 3.6, but there's no guarantees.
+
+
+
+
+%prep
+%autosetup -n django-pgviews-redux-0.9.2
+
+%build
+%py3_build
+
+%install
+%py3_install
+install -d -m755 %{buildroot}/%{_pkgdocdir}
+if [ -d doc ]; then cp -arf doc %{buildroot}/%{_pkgdocdir}; fi
+if [ -d docs ]; then cp -arf docs %{buildroot}/%{_pkgdocdir}; fi
+if [ -d example ]; then cp -arf example %{buildroot}/%{_pkgdocdir}; fi
+if [ -d examples ]; then cp -arf examples %{buildroot}/%{_pkgdocdir}; fi
+pushd %{buildroot}
+if [ -d usr/lib ]; then
+ find usr/lib -type f -printf "/%h/%f\n" >> filelist.lst
+fi
+if [ -d usr/lib64 ]; then
+ find usr/lib64 -type f -printf "/%h/%f\n" >> filelist.lst
+fi
+if [ -d usr/bin ]; then
+ find usr/bin -type f -printf "/%h/%f\n" >> filelist.lst
+fi
+if [ -d usr/sbin ]; then
+ find usr/sbin -type f -printf "/%h/%f\n" >> filelist.lst
+fi
+touch doclist.lst
+if [ -d usr/share/man ]; then
+ find usr/share/man -type f -printf "/%h/%f.gz\n" >> doclist.lst
+fi
+popd
+mv %{buildroot}/filelist.lst .
+mv %{buildroot}/doclist.lst .
+
+%files -n python3-django-pgviews-redux -f filelist.lst
+%dir %{python3_sitelib}/*
+
+%files help -f doclist.lst
+%{_docdir}/*
+
+%changelog
+* Fri May 05 2023 Python_Bot <Python_Bot@openeuler.org> - 0.9.2-1
+- Package Spec generated
diff --git a/sources b/sources
new file mode 100644
index 0000000..00b43e7
--- /dev/null
+++ b/sources
@@ -0,0 +1 @@
+01599a4c174b5bbef559d4e202c6671d django-pgviews-redux-0.9.2.tar.gz