int pos = keyNamedParam.indexOf(ENCRYPTKEY_GAP, ENCRYPTKEY_PREFIX_LEN);
String tableName = keyNamedParam.substring(ENCRYPTKEY_PREFIX_LEN, pos);
String columnName = keyNamedParam.substring(pos+ENCRYPTKEY_GAP_LEN);
EncryptKey key = beanDescriptor.getEncryptKey(tableName, columnName);
String strKey = key.getStringValue();
return params.setEncryptionKey(keyNamedParam, strKey);
}