Use same SQL as in the ChangeLog.xml and remove the no longer needed ChangeLog.xml

The ChangeLog.xml is not needed because we are using the JDBC Connection directly to do the query

Author: filiphr

modules/flowable-cmmn-engine/src/main/resources/org/flowable/cmmn/db/mapping/mappings.xml

@@ -27,7 +27,6 @@
     <mapper resource="org/flowable/common/db/mapping/entity/Property.xml" />
     <mapper resource="org/flowable/common/db/mapping/entity/ByteArray.xml" />
     <mapper resource="org/flowable/common/db/mapping/entity/TableData.xml" />
-    <mapper resource="org/flowable/common/db/mapping/ChangeLog.xml" />
     <mapper resource="org/flowable/common/db/mapping/common.xml" />
 
     <mapper resource="org/flowable/cmmn/db/mapping/ChangeTenantCmmn.xml" />

modules/flowable-dmn-engine/src/main/resources/org/flowable/dmn/db/mapping/mappings.xml

@@ -9,7 +9,6 @@
   <mappers>
     <!-- Common mappers -->
     <mapper resource="org/flowable/common/db/mapping/entity/Property.xml" />
-    <mapper resource="org/flowable/common/db/mapping/ChangeLog.xml" />
     <mapper resource="org/flowable/common/db/mapping/common.xml" />
 
     <mapper resource="org/flowable/dmn/db/mapping/ChangeTenantDmn.xml" />

modules/flowable-engine-common/src/main/java/org/flowable/common/engine/impl/db/EngineSqlScriptBasedDbSchemaManager.java

@@ -198,13 +198,16 @@ protected ChangeLogVersion getChangeLogVersion() {
                 changeLogTableName = prependDatabaseTablePrefix(changeLogTableName);
             }
             try (PreparedStatement statement = databaseConfiguration.getConnection()
-                    .prepareStatement("select ID from " + changeLogTableName + " order by DATEEXECUTED desc")) {
+                    .prepareStatement("select ID from " + changeLogTableName + " order by DATEEXECUTED")) {
+                String changeLogVersion = null;
                 try (ResultSet resultSet = statement.executeQuery()) {
-                    if (resultSet.next()) {
-                        String changeLogVersion = resultSet.getString(1);
-                        return new ChangeLogVersion(changeLogVersion, getDbVersionForChangelogVersion(changeLogVersion));
+                    while (resultSet.next()) {
+                        changeLogVersion = resultSet.getString(1);
                     }
                 }
+                if (changeLogVersion != null) {
+                    return new ChangeLogVersion(changeLogVersion, getDbVersionForChangelogVersion(changeLogVersion));
+                }
             } catch (SQLException e) {
                 throw new RuntimeException("Failed to get change log version from " + changeLogTableName, e);
             }

modules/flowable-engine-common/src/main/resources/org/flowable/common/db/mapping/ChangeLog.xml

@@ -18,7 +18,6 @@
     <!-- Common mappers -->
     <mapper resource="org/flowable/common/db/mapping/entity/Property.xml" />
     <mapper resource="org/flowable/common/db/mapping/entity/TableData.xml" />
-    <mapper resource="org/flowable/common/db/mapping/ChangeLog.xml" />
     <mapper resource="org/flowable/common/db/mapping/common.xml" />
 
     <!-- Engine mappers -->