ProjectStatus enum is mapped in db as a String

persist/src/db/12.1.0~alpha.0/fix_db_20180411.sql

+-- drop data mining structures
 drop table datamining_references ;
 drop table datamining_connections;
 drop table datamining_table;
 drop table data_mining_set_table ;
 drop sequence datamining_table_iddb_seq;
 drop sequence data_mining_set_iddb_seq;
+
+-- change project status from int to string
+
+alter table project_table add column status_string varchar(255) default 'UNKNOWN';
+update project_table set status_string = 'PARSING_DATA' where status = 1;
+update project_table set status_string = 'ANNOTATING' where status = 2;
+update project_table set status_string = 'UPLOADING_TO_DB' where status = 3;
+update project_table set status_string = 'EXTENDING_MODEL' where status = 4;
+update project_table set status_string = 'GENERATING_IMAGES' where status = 5;
+update project_table set status_string = 'CACHING' where status = 6;
+update project_table set status_string = 'DONE' where status = 7;
+update project_table set status_string = 'FAIL' where status = 8;
+update project_table set status_string = 'CACHING_MIRIAM' where status = 9;
+update project_table set status_string = 'VALIDATING_MIRIAM' where status = 10;
+update project_table set status_string = 'REMOVING' where status = 11;
+update project_table set status_string = 'CACHING_CHEMICAL' where status = 12;
+update project_table set status_string = 'CACHING_DRUG' where status = 13;
+update project_table set status_string = 'CACHING_MI_RNA' where status = 14;
+alter table project_table drop column status ;
+alter table project_table rename COLUMN status_string to status;