logger.info("collection path "+collection.getCollectionPath());
    public String getSchemaPath(XmldbURI collection, String namespace){                logger.debug("Find schema with namespace '"+namespace+"' in '"+collection+"'.");        String path=null;                // Fill parameters for query        String xquery = FINDSCHEMA.replaceAll("COLLECTION",collection.getCollectionPath()).replaceAll("TARGET",namespace);                return executeQuerySingleResult(xquery);    }