public void setCatalogPattern(@Nullable String catalogPattern) {
        this.catalogPattern = catalogPattern;
    }
a catalog name; must match the catalog name as it
     is stored in the database; "" retrieves those without a catalog;
     <code>null</code> means that the catalog name should not be used to narrow
     the search
querydsl-sql-codegen/src/main/java/com/querydsl/sql/codegen/MetaDataExporter.java