docs: protected void buildSQLStatements() {
          insertFileSQL = "insert into "
                  + schemaObjectPrefix + "FSENTRY "
                  + "(FSENTRY_PATH, FSENTRY_NAME, FSENTRY_DATA, "
                  + "FSENTRY_LASTMOD, FSENTRY_LENGTH) "
                  + "values (?, ?, ?, ?, ?)";
  
          insertFolderSQL = "insert into "
                  + schemaObjectPrefix + "FSENTRY "
                  + "(FSENTRY_PATH, FSENTRY_NAME, FSENTRY_LASTMOD, FSENTRY_LENGTH) "
                  + "values (?, nvl(?, ' '), ?, null)";
  
          updateDataSQL = "update "
                  + schemaObjectPrefix + "FSENTRY "
                  + "set FSENTRY_DATA = ?, FSENTRY_LASTMOD = ?, FSENTRY_LENGTH = ? "
                  + "where FSENTRY_PATH = ? and FSENTRY_NAME = ? "
                  + "and FSENTRY_LENGTH is not null";
  
          updateLastModifiedSQL = "update "
                  + schemaObjectPrefix + "FSENTRY set FSENTRY_LASTMOD = ? "
                  + "where FSENTRY_PATH = ? and FSENTRY_NAME = ? "
                  + "and FSENTRY_LENGTH is not null";
  
          selectExistSQL = "select 1 from "
                  + schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
                  + "and FSENTRY_NAME = nvl(?, ' ')";
  
          selectFileExistSQL = "select 1 from "
                  + schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
                  + "and FSENTRY_NAME = ? and FSENTRY_LENGTH is not null";
  
          selectFolderExistSQL = "select 1 from "
                  + schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
                  + "and FSENTRY_NAME = nvl(?, ' ') and FSENTRY_LENGTH is null";
  
          selectFileNamesSQL = "select FSENTRY_NAME from "
                  + schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
                  + "and FSENTRY_LENGTH is not null";
  
          selectFolderNamesSQL = "select FSENTRY_NAME from "
                  + schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
                  + "and FSENTRY_NAME != ' ' "
                  + "and FSENTRY_LENGTH is null";
  
          selectFileAndFolderNamesSQL = "select FSENTRY_NAME from "
                  + schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
                  + "and FSENTRY_NAME != ' '";
  
          selectChildCountSQL = "select count(FSENTRY_NAME) from "
                  + schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ?  "
                  + "and FSENTRY_NAME != ' '";
  
          selectDataSQL = "select nvl(FSENTRY_DATA, empty_blob()) from "
                  + schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
                  + "and FSENTRY_NAME = ? and FSENTRY_LENGTH is not null";
  
          selectLastModifiedSQL = "select FSENTRY_LASTMOD from "
                  + schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
                  + "and FSENTRY_NAME = nvl(?, ' ')";
  
          selectLengthSQL = "select nvl(FSENTRY_LENGTH, 0) from "
                  + schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
                  + "and FSENTRY_NAME = ? and FSENTRY_LENGTH is not null";
  
          deleteFileSQL = "delete from "
                  + schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
                  + "and FSENTRY_NAME = ? and FSENTRY_LENGTH is not null";
  
          deleteFolderSQL = "delete from "
                  + schemaObjectPrefix + "FSENTRY where "
                  + "(FSENTRY_PATH = ? and FSENTRY_NAME = nvl(?, ' ') and FSENTRY_LENGTH is null) "
                  + "or (FSENTRY_PATH = ?) "
                  + "or (FSENTRY_PATH like ?) ";
  
          copyFileSQL = "insert into "
                  + schemaObjectPrefix + "FSENTRY "
                  + "(FSENTRY_PATH, FSENTRY_NAME, FSENTRY_DATA, "
                  + "FSENTRY_LASTMOD, FSENTRY_LENGTH) "
                  + "select ?, ?, FSENTRY_DATA, "
                  + "FSENTRY_LASTMOD, FSENTRY_LENGTH from "
                  + schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
                  + "and FSENTRY_NAME = ? and FSENTRY_LENGTH is not null";
  
          copyFilesSQL = "insert into "
                  + schemaObjectPrefix + "FSENTRY "
                  + "(FSENTRY_PATH, FSENTRY_NAME, FSENTRY_DATA, "
                  + "FSENTRY_LASTMOD, FSENTRY_LENGTH) "
                  + "select ?, FSENTRY_NAME, FSENTRY_DATA, "
                  + "FSENTRY_LASTMOD, FSENTRY_LENGTH from "
                  + schemaObjectPrefix + "FSENTRY where FSENTRY_PATH = ? "
                  + "and FSENTRY_LENGTH is not null";
      }