From 354cfbbebc3fdf6ff7082e1cc7db0abc147ced78 Mon Sep 17 00:00:00 2001
From: Michael Hoennig <michael@hoennig.de>
Date: Sat, 25 May 2019 16:10:50 +0200
Subject: [PATCH] historicization of JHI_USER table

---
 README.md                                     |  2 +-
 .../historicization/historicization_User.xml  | 98 +++++++++++++++++++
 .../resources/config/liquibase/master.xml     |  9 +-
 3 files changed, 105 insertions(+), 4 deletions(-)
 create mode 100644 src/main/resources/config/liquibase/historicization/historicization_User.xml

diff --git a/README.md b/README.md
index 19a77f52..f7ab026e 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ Then start the application with the pgsql profile:
     gw bootRun -Ppgsql
     gw bootRun -Ppgsql -Psample-data     # populated with sample data
 
-To use a **remote Postgres database** on a hostsharing server,
+To use a **remote Postgres database** on a Hostsharing server,
 
     autossh -M 0 -o "ServerAliveInterval 60" -o "ServerAliveCountMax 3" \
         -f -N -L 55432:127.0.0.1:5432 "xyz00@xyz.hostsharing.net"
diff --git a/src/main/resources/config/liquibase/historicization/historicization_User.xml b/src/main/resources/config/liquibase/historicization/historicization_User.xml
new file mode 100644
index 00000000..7a8ffb63
--- /dev/null
+++ b/src/main/resources/config/liquibase/historicization/historicization_User.xml
@@ -0,0 +1,98 @@
+<?xml version="1.0" encoding="utf-8"?>
+<databaseChangeLog
+    xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
+    xmlns:ext="http://www.liquibase.org/xml/ns/dbchangelog-ext"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.5.xsd
+                        http://www.liquibase.org/xml/ns/dbchangelog-ext http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-ext.xsd">
+
+    <!-- Table for historical user data. -->
+    <changeSet id="20190526150000-1" author="mhierweck,mhoennig" dbms="postgresql">
+
+        <createTable tableName="jhi_user_history">
+
+            <!-- history-related columns -->
+
+            <column name="history_id" type="bigint" autoIncrement="true">
+                <constraints primaryKey="true" unique="true" nullable="false"/>
+            </column>
+
+            <column name="history_transaction" type="bigint">
+                <constraints nullable="false" />
+            </column>
+
+            <column name="history_tombstone" type="bool">
+                <constraints nullable="false" />
+            </column>
+
+            <!-- id-column like in base table, but no primary key nor unique -->
+
+            <column name="id" type="bigint" autoIncrement="${autoIncrement}">
+                <constraints primaryKey="true" nullable="false"/>
+            </column>
+
+            <!-- all following columns like in base table, dropping unique constraints -->
+
+            <column name="login" type="varchar(50)">
+                <constraints nullable="false"/>
+            </column>
+            <column name="password_hash" type="varchar(60)"/>
+            <column name="first_name" type="varchar(50)"/>
+            <column name="last_name" type="varchar(50)"/>
+            <column name="email" type="varchar(191)">
+                <constraints nullable="false"/>
+            </column>
+            <column name="image_url" type="varchar(256)"/>
+            <column name="activated" type="boolean" valueBoolean="false">
+                <constraints nullable="false" />
+            </column>
+            <column name="lang_key" type="varchar(6)"/>
+            <column name="activation_key" type="varchar(20)"/>
+            <column name="reset_key" type="varchar(20)"/>
+            <column name="created_by" type="varchar(50)">
+                <constraints nullable="false"/>
+            </column>
+            <column name="created_date" type="timestamp"/>
+            <column name="reset_date" type="timestamp">
+                <constraints nullable="true"/>
+            </column>
+            <column name="last_modified_by" type="varchar(50)"/>
+            <column name="last_modified_date" type="timestamp"/>
+        </createTable>
+
+    </changeSet>
+
+    <changeSet id="20190526150000-2" author="mhierweck,mhoennig" dbms="postgresql">
+
+        <addForeignKeyConstraint baseColumnNames="history_transaction"
+                                 baseTableName="jhi_user_history"
+                                 constraintName="fk_jhi_user_history_transaction"
+                                 referencedColumnNames="history_transaction"
+                                 referencedTableName="history"/>
+
+    </changeSet>
+
+    <changeSet id="20190526150000-3" author="mhierweck,mhoennig" dbms="postgresql">
+        <createProcedure>
+            CREATE TRIGGER jhi_user_historicize
+            AFTER INSERT OR DELETE OR UPDATE ON jhi_user
+            FOR EACH ROW EXECUTE PROCEDURE historicize();
+        </createProcedure>
+        <rollback>
+            DROP TRIGGER jhi_user_historicize
+        </rollback>
+    </changeSet>
+
+    <changeSet id="20190526150000-4" author="mhierweck,mhoennig" dbms="postgresql">
+        <createView viewName="jhi_user_history_view" replaceIfExists="true">
+            SELECT *
+              FROM jhi_user_history
+             WHERE history_id IN (
+                SELECT max(history_id) AS history_id
+                  FROM jhi_user_history
+                 WHERE history_transaction &lt;= current_setting('history.transaction')::bigint
+                 GROUP BY login) -- must have a unique constraint
+        </createView>
+    </changeSet>
+
+</databaseChangeLog>
diff --git a/src/main/resources/config/liquibase/master.xml b/src/main/resources/config/liquibase/master.xml
index 8f6076ce..9c0f7345 100644
--- a/src/main/resources/config/liquibase/master.xml
+++ b/src/main/resources/config/liquibase/master.xml
@@ -7,7 +7,11 @@
     <!-- initial JHipster tables (user etc.) -->
     <include file="config/liquibase/changelog/00000000000000_initial_schema.xml" relativeToChangelogFile="false"/>
 
-    <!-- sample data. comes after historicization triggers, historicization applies -->
+    <!-- historicization for initial JHipster tables -->
+    <include file="config/liquibase/historicization/historicization.xml" relativeToChangelogFile="false"/>
+    <include file="config/liquibase/historicization/historicization_User.xml" relativeToChangelogFile="false"/>
+
+    <!-- sample data. comes after historicization triggers, thus historicization applies -->
     <include file="config/liquibase/sample-data/users.xml" relativeToChangelogFile="false"/>
     <include file="config/liquibase/sample-data/users_authorities.xml" relativeToChangelogFile="false"/>
 
@@ -32,8 +36,7 @@
     <include file="config/liquibase/changelog/constraints_UserRoleAssignment.xml" relativeToChangelogFile="false"/>
     <include file="config/liquibase/changelog/constraints_Membership.xml" relativeToChangelogFile="false"/>
 
-    <!-- historicization -->
-    <include file="config/liquibase/historicization/historicization.xml" relativeToChangelogFile="false"/>
+    <!-- historicization for hsadmin specific tables -->
     <include file="config/liquibase/historicization/historicization_UserRoleAssignment.xml" relativeToChangelogFile="false"/>
     <include file="config/liquibase/historicization/historicization_Customer.xml" relativeToChangelogFile="false"/>
     <include file="config/liquibase/historicization/historicization_Membership.xml" relativeToChangelogFile="false"/>