Changed db trigger table to support trigger instances

db/install.xml

 <?xml version="1.0" encoding="UTF-8" ?>
-<XMLDB PATH="admin/tool/cleanupcourses/db" VERSION="2018021301" COMMENT="XMLDB file for Moodle tool/cleanupcourses"
+<XMLDB PATH="admin/tool/cleanupcourses/db" VERSION="2018021302" COMMENT="XMLDB file for Moodle tool/cleanupcourses"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:noNamespaceSchemaLocation="../../../lib/xmldb/xmldb.xsd">
   <TABLES>
@@ -32,13 +32,13 @@
     <TABLE NAME="tool_cleanupcourses_trigger" COMMENT="Trigger subplugins for the cleanup courses">
       <FIELDS>
         <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="true"/>
+        <FIELD NAME="instancename" TYPE="char" LENGTH="50" NOTNULL="true" SEQUENCE="false" COMMENT="instancename of the trigger"/>
         <FIELD NAME="subpluginname" TYPE="char" LENGTH="50" NOTNULL="true" SEQUENCE="false" COMMENT="name of the subplugin"/>
-        <FIELD NAME="enabled" TYPE="int" LENGTH="1" NOTNULL="true" DEFAULT="0" SEQUENCE="false" COMMENT="tells if the subplugin is enabled"/>
-        <FIELD NAME="followedby" TYPE="int" LENGTH="10" NOTNULL="false" SEQUENCE="false" COMMENT="tells which step follows this one in the cleanup process"/>
-        <FIELD NAME="sortindex" TYPE="int" LENGTH="3" NOTNULL="false" SEQUENCE="false" COMMENT="Sortindex of the subplugins"/>
+        <FIELD NAME="workflowid" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false" COMMENT="id of the workflow"/>
       </FIELDS>
       <KEYS>
         <KEY NAME="primary" TYPE="primary" FIELDS="id"/>
+        <KEY NAME="workflowid_fk" TYPE="foreign" FIELDS="workflowid" REFTABLE="tool_cleanupcourses_workflow" REFFIELDS="id"/>
       </KEYS>
     </TABLE>
     <TABLE NAME="tool_cleanupcourses_step" COMMENT="Step subplugins for the cleanup courses">

db/upgrade.php

@@ -150,6 +150,63 @@ function xmldb_tool_cleanupcourses_upgrade($oldversion) {
         upgrade_plugin_savepoint(true, 2018021301, 'tool', 'cleanupcourses');
     }
 
+    if ($oldversion < 2018021302) {
+
+        // Define field workflowid to be added to tool_cleanupcourses_trigger.
+        $table = new xmldb_table('tool_cleanupcourses_trigger');
+        $field = new xmldb_field('workflowid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'subpluginname');
+
+        // Conditionally launch add field workflowid.
+        if (!$dbman->field_exists($table, $field)) {
+            $dbman->add_field($table, $field);
+        }
+
+        // Define field instancename to be added to tool_cleanupcourses_trigger.
+        $table = new xmldb_table('tool_cleanupcourses_trigger');
+        $field = new xmldb_field('instancename', XMLDB_TYPE_CHAR, '50', null, XMLDB_NOTNULL, null, null, 'workflowid');
+
+        // Conditionally launch add field instancename.
+        if (!$dbman->field_exists($table, $field)) {
+            $dbman->add_field($table, $field);
+        }
+
+        // Define field enabled to be dropped from tool_cleanupcourses_trigger.
+        $table = new xmldb_table('tool_cleanupcourses_trigger');
+        $field = new xmldb_field('enabled');
+
+        // Conditionally launch drop field enabled.
+        if ($dbman->field_exists($table, $field)) {
+            $dbman->drop_field($table, $field);
+        }
+
+        // Define field sortindex to be dropped from tool_cleanupcourses_trigger.
+        $table = new xmldb_table('tool_cleanupcourses_trigger');
+        $field = new xmldb_field('sortindex');
+
+        // Conditionally launch drop field sortindex.
+        if ($dbman->field_exists($table, $field)) {
+            $dbman->drop_field($table, $field);
+        }
+
+        // Define field sortindex to be dropped from tool_cleanupcourses_trigger.
+        $table = new xmldb_table('tool_cleanupcourses_trigger');
+        $field = new xmldb_field('sortindex');
+
+        // Conditionally launch drop field sortindex.
+        if ($dbman->field_exists($table, $field)) {
+            $dbman->drop_field($table, $field);
+        }
+
+        // Define key workflowid_fk (foreign) to be added to tool_cleanupcourses_trigger.
+        $table = new xmldb_table('tool_cleanupcourses_trigger');
+        $key = new xmldb_key('workflowid_fk', XMLDB_KEY_FOREIGN, array('workflowid'), 'tool_cleanupcourses_workflow', array('id'));
+
+        // Launch add key workflowid_fk.
+        $dbman->add_key($table, $key);
+
+        // Cleanupcourses savepoint reached.
+        upgrade_plugin_savepoint(true, 2018021302, 'tool', 'cleanupcourses');
+    }
 
     return true;
 }
\ No newline at end of file