com.antelmann.util.logging
Class JDBCLogWriter

java.lang.Object
  com.antelmann.util.logging.AbstractLogWriter<RowItem>
      com.antelmann.util.logging.JDBCLogWriter

All Implemented Interfaces:

Filter<LogEntry>, LogWriter, Closeable

public class JDBCLogWriter
extends AbstractLogWriter<RowItem>
implements Closeable

JDBCLogWriter provides a LogWriter that writes to a java.sql.Connection. It requires a LogEntryFormatter that converts the LogEntry object to a RowItem object. This implementation is only suitable for those implementations where it is sufficient to store the LogEntry data into a single row of a single table.

Author:

Holger Antelmann

See Also:

ConnectionHelper.insertRow(String, Object[])

Field Summary

protected ConnectionHelper

helper

Fields inherited from class com.antelmann.util.logging.AbstractLogWriter

filter

Fields inherited from interface com.antelmann.util.Filter

EXCLUDE_ALL_FILTER, INCLUDE_ALL_FILTER

Constructor Summary

JDBCLogWriter(Connection con, LogEntryFormatter<RowItem> formatter)
requires a formatter that will split log entries in an object array which corresponds to the fields in the given table.

Method Summary

void	close() closes the underlying connection
ConnectionHelper	getConnectionHelper() returns the helper instance in use on writing the log pattern
void	writeLogPattern(RowItem row) the entry is split into an object array by the formatter which is then inserted into the table.

Methods inherited from class com.antelmann.util.logging.AbstractLogWriter

accept, getLogFilter, getLogFormatter, setLogFilter, setLogFormatter, write

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

helper

protected ConnectionHelper helper

Constructor Detail

JDBCLogWriter

public JDBCLogWriter(Connection con,
                     LogEntryFormatter<RowItem> formatter)

requires a formatter that will split log entries in an object array which corresponds to the fields in the given table.

See Also:

ConnectionHelper.insertRow(String, Object[])

Method Detail

writeLogPattern

public void writeLogPattern(RowItem row)
                     throws LogException

the entry is split into an object array by the formatter which is then inserted into the table. For more sophisticated storage that requires more than one table (if e.g. a variable number of parameters are to be stored in a separate table) a different implementation would be required.

Specified by:

writeLogPattern in class AbstractLogWriter<RowItem>

Throws:

LogException

See Also:

ConnectionHelper.insertRow(String, Object[])

getConnectionHelper

public ConnectionHelper getConnectionHelper()

returns the helper instance in use on writing the log pattern

close

public void close()
           throws IOException

closes the underlying connection

Specified by:

close in interface Closeable

Throws:

IOException