]> Logging. 3 REDLAND Library Logging. Message and error logging. int (*librdf_log_level_func) (void *user_data, const char *message, va_list arguments); int (*librdf_log_func) (void *user_data, librdf_log_message *message); enum librdf_log_level; enum librdf_log_facility; int librdf_log_message_code (librdf_log_message *message); librdf_log_level librdf_log_message_level (librdf_log_message *message); librdf_log_facility librdf_log_message_facility (librdf_log_message *message); const char* librdf_log_message_message (librdf_log_message *message); raptor_locator* librdf_log_message_locator (librdf_log_message *message); Provides structured access to debug, information, warning and error messages from the libraries. Structured information is most often used from errors such as parsing where file or URI and line numbers can be returned via a raptor_locator object pointer found by librdf_log_message_locator() on the librdf_log_message. librdf_log_level_funcint (*librdf_log_level_func) (void *user_data, const char *message, va_list arguments); Handler for one log level, for the warning and error levels ONLY. Used by librdf_world_set_warning and librdf_world_set_error. user_data : User data pointer message : Log message. arguments : Message arguments. Returns : non-zero to indicate log message has been handled librdf_log_funcint (*librdf_log_func) (void *user_data, librdf_log_message *message); Handler for all log levels. user_data : User data pointer message : Log message structure pointer. Returns : non-zero to indicate log message has been handled librdf_log_leveltypedef enum { LIBRDF_LOG_NONE = 0, LIBRDF_LOG_DEBUG, LIBRDF_LOG_INFO, LIBRDF_LOG_WARN, LIBRDF_LOG_ERROR, LIBRDF_LOG_FATAL, LIBRDF_LOG_LAST=LIBRDF_LOG_FATAL } librdf_log_level; Indicates the level of the log message. LIBRDF_LOG_NONE No level LIBRDF_LOG_DEBUG Debug. LIBRDF_LOG_INFO Information. LIBRDF_LOG_WARN Warning. LIBRDF_LOG_ERROR Recoverable error. Program can continue. LIBRDF_LOG_FATAL Fatal error. Program will abort if this is not caught. LIBRDF_LOG_LAST Internal, never returned. librdf_log_facilitytypedef enum { LIBRDF_FROM_NONE = 0, LIBRDF_FROM_CONCEPTS, LIBRDF_FROM_DIGEST, LIBRDF_FROM_FILES, LIBRDF_FROM_HASH, LIBRDF_FROM_INIT, LIBRDF_FROM_ITERATOR, LIBRDF_FROM_LIST, LIBRDF_FROM_MODEL, LIBRDF_FROM_NODE, LIBRDF_FROM_PARSER, LIBRDF_FROM_QUERY, LIBRDF_FROM_SERIALIZER, LIBRDF_FROM_STATEMENT, LIBRDF_FROM_STORAGE, LIBRDF_FROM_STREAM, LIBRDF_FROM_URI, LIBRDF_FROM_UTF8, LIBRDF_FROM_MEMORY, LIBRDF_FROM_LAST=LIBRDF_FROM_MEMORY } librdf_log_facility; Indicates the part of the system that generated the log message. LIBRDF_FROM_NONE Associated with no part. LIBRDF_FROM_CONCEPTS Concepts LIBRDF_FROM_DIGEST Digest LIBRDF_FROM_FILES Files LIBRDF_FROM_HASH Hash LIBRDF_FROM_INIT Init LIBRDF_FROM_ITERATOR Iterator LIBRDF_FROM_LIST List LIBRDF_FROM_MODEL Model LIBRDF_FROM_NODE Node LIBRDF_FROM_PARSER Parser LIBRDF_FROM_QUERY Query LIBRDF_FROM_SERIALIZER Serializer LIBRDF_FROM_STATEMENT Statement LIBRDF_FROM_STORAGE Storage LIBRDF_FROM_STREAM Stream LIBRDF_FROM_URI URI LIBRDF_FROM_UTF8 UTF8 LIBRDF_FROM_MEMORY Memory LIBRDF_FROM_LAST Internal, never returned. librdf_log_message_codeint librdf_log_message_code (librdf_log_message *message); Retrieve error code from log message. message : log message Returns : int error code librdf_log_message_levellibrdf_log_level librdf_log_message_level (librdf_log_message *message); Retrieve severity of log message. The log message severity level is defined in rdf_log.h as values of enum librdf_log_level message : log message Returns : severity level librdf_log_message_facilitylibrdf_log_facility librdf_log_message_facility (librdf_log_message *message); Retrieve facility that generated the message. The log message facility is defined in rdf_log.h as values of enum librdf_log_facility message : log message Returns : ID of Redland facility that generated the log message. librdf_log_message_messageconst char* librdf_log_message_message (librdf_log_message *message); Retrieve text message from log entry. The string returned is shared and must be copied by the caller if required to be retained. message : log message Returns : shared pointer to the log message string librdf_log_message_locatorraptor_locator* librdf_log_message_locator (librdf_log_message *message); Retrieve locator of log entry. message : log message Returns : pointer to an appropriate raptor_locator* or NULL if not available