From 8e1be0906085fbb721547428438ac1f139ae9ed6 Mon Sep 17 00:00:00 2001
From: Helmut Merz <helmutm@cy55.de>
Date: Mon, 28 Dec 2020 10:19:52 +0100
Subject: [PATCH] add geostore project

---
 pgsql/geostore/tables.sql | 93 +++++++++++++++++++++++++++++++++++++++
 pgsql/geostore/views.sql  | 20 +++++++++
 2 files changed, 113 insertions(+)
 create mode 100644 pgsql/geostore/tables.sql
 create mode 100644 pgsql/geostore/views.sql

diff --git a/pgsql/geostore/tables.sql b/pgsql/geostore/tables.sql
new file mode 100644
index 0000000..1c4f2fc
--- /dev/null
+++ b/pgsql/geostore/tables.sql
@@ -0,0 +1,93 @@
+-- steg/sql/tgeo.sql
+
+set search_path to generic, public;
+
+-- *** common tables ***
+
+-- datatypes
+
+create table datatypes (
+    id smallint not null primary key,
+    name text not null unique
+);
+
+insert into datatypes (id, name) values (10, 'text');
+insert into datatypes (id, name) values (16, 'date');
+insert into datatypes (id, name) values (20, 'int');
+insert into datatypes (id, name) values (21, 'bool');
+insert into datatypes (id, name) values (25, 'valuelist');
+insert into datatypes (id, name) values (30, 'decimal');
+insert into datatypes (id, name) values (35, 'timestamp');
+
+create index idx_datatype_name on datatypes using btree (name);
+
+-- properties
+
+create table properties (
+    id serial not null primary key,
+    name text,
+    label text,
+    description text,
+    datatype smallint not null references datatypes,
+    domain text,
+    pattern text
+);
+
+-- for data see properties.sql
+
+create index idx_prop_label on properties using btree (label);
+
+-- valuelists
+
+create table valuelists (
+    id bigserial not null primary key,
+    property int not null references properties,
+    value text,
+    pattern text
+);
+
+-- *** GIS-specific tables ***
+
+-- geotypes
+
+create table geotypes (
+    id smallint not null primary key,
+    name text not null unique
+);
+
+insert into geotypes (id, name) values
+    (0, 'area'),
+    (1, 'realestate'),
+    (2, 'building'),
+    (10, 'line'),
+    (20, 'point');
+
+-- geoitems
+
+create table geoitems (
+    id bigserial not null primary key,
+    geom geometry(geometry, 25832) not null,    -- unique?
+    type smallint not null references geotypes,
+    name text,
+    description text,
+    community int not null
+);
+
+create index fki_item_type on geoitems using btree (type);
+create index idx_item_geom on geoitems using brin (geom);
+create index idx_item_community on geoitems using btree (community);
+
+-- geoattrs
+
+create table geoattrs (
+    id bigserial not null primary key,
+    item bigint not null references geoitems,
+    property int not null references properties,
+    txtvalue text,
+    intvalue bigint
+);
+
+create index fki_attr_item on geoattrs using btree (item);
+create index fki_attr_prop on geoattrs using btree (property);
+create index idx_attr_txtv on geoattrs using btree (property, txtvalue);
+create index idx_attr_intv on geoattrs using btree (property, intvalue);
diff --git a/pgsql/geostore/views.sql b/pgsql/geostore/views.sql
new file mode 100644
index 0000000..63551b4
--- /dev/null
+++ b/pgsql/geostore/views.sql
@@ -0,0 +1,20 @@
+-- steg/sql/vgeo.sql
+
+set search_path to generic, public;
+
+create or replace view vgeoattrs as
+  select i.id as item_id, i.geom, i.type, i.name as item_name, 
+         i.description as item_description, i.community,
+         a.id as attr_id, p.id as prop_id,
+         p.name as prop_name, p.label as prop_label, 
+         p.description as prop_description, p.datatype,
+         p.domain as prop_domain,
+         case when p.datatype = 25 then vl.value 
+              else a.txtvalue 
+         end as txtvalue, 
+         a.intvalue
+    from geoitems i
+      left join geoattrs a on a.item = i.id
+      left join properties p on p.id = a.property
+      left join valuelists vl on 
+        p.datatype = 25 and vl.property = p.id and vl.id = a.intvalue;