Package com.sun.identity.log.handlers

Class LogReadDBHandler

java.lang.Object

com.sun.identity.log.handlers.LogReadDBHandler

All Implemented Interfaces:

ReadDBHandler

public class LogReadDBHandler
extends Object
implements ReadDBHandler

LogReadDBHandler class implements ReadDBHandler interface. This class name will be stored as a configuration parameter. LogReader will instantiate it at run time (when messages are logged into file). This class reads the DB table, applies query if any, sorts records on field name when required, collects most recent records (default option) or all records. It returns result 2D String to the caller (LogReader).

Constructor Summary

Constructors

Constructor	Description
LogReadDBHandler()	constructor does nothing

Method Summary

Modifier and Type	Method	Description
long	getNumberOfRows(LogManager logMgr, String fileName)	Return number of records in each table
String[][]	getTableNames(LogManager logMgr)	Return table names for each logger
String[][]	logRecRead(String tableName, LogQuery logQuery, LogManager logMgr, boolean sourceData)	LogReader calls this method.
String[][]	logRecRead(Set tableNames, LogQuery logQuery, LogManager logMgr, boolean sourceData)	LogReader calls this method.

Methods inherited from class java.lang.Object

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

Constructor Detail

LogReadDBHandler

public LogReadDBHandler()

constructor does nothing

Method Detail

logRecRead

public String[][] logRecRead(String tableName,
                             LogQuery logQuery,
                             LogManager logMgr,
                             boolean sourceData)
                      throws IOException,
                             NoSuchFieldException,
                             IllegalArgumentException,
                             RuntimeException,
                             SQLException,
                             Exception

LogReader calls this method. It collects header, records, applies query (if any), sorts (if asked) the records on field, checks the max records to return, collects all the recods and returns.

Specified by:

logRecRead in interface ReadDBHandler

Parameters:

tableName - db table name

logQuery - is user specified qury chriteria with sorting requirement

logMgr - the log manager associated with this handler

sourceData - it specifies whether return data should be original data received by logger (source) or formatted data as in file.

Returns:

all the matched records with query

Throws:

IOException - if it fails to read log records.

NoSuchFieldException - if it fails to retrieve the name of field.

IllegalArgumentException - if query has wrong value.

RuntimeException - if it fails to retrieve log record.

SQLException - if it fails to process sql query.

Exception - if it fails any of operation.

logRecRead

public String[][] logRecRead(Set tableNames,
                             LogQuery logQuery,
                             LogManager logMgr,
                             boolean sourceData)
                      throws IOException,
                             NoSuchFieldException,
                             IllegalArgumentException,
                             RuntimeException,
                             SQLException,
                             Exception

LogReader calls this method. It collects header, records, applies query (if any), sorts (if asked) the records on field, checks the max records to return, collects all the recods and returns.

Specified by:

logRecRead in interface ReadDBHandler

Parameters:

tableNames - db table names

logQuery - is user specified qury chriteria with sorting requirement

logMgr - the log manager associated with this handler

sourceData - it specifies whether return data should be original data received by logger (source) or formatted data as in file.

Returns:

all the matched records with query

Throws:

IOException - if it fails to read log records.

NoSuchFieldException - if it fails to retrieve the name of field.

IllegalArgumentException - if query has wrong value.

RuntimeException - if it fails to retrieve log record.

SQLException - if it fails to process sql query.

Exception - if it fails any of operation.

getTableNames

public String[][] getTableNames(LogManager logMgr)

Return table names for each logger

Parameters:

logMgr - Log Manager that is maintaing table names

Returns:

table names for each logger

getNumberOfRows

public long getNumberOfRows(LogManager logMgr,
                            String fileName)

Return number of records in each table

Parameters:

logMgr - Log Manager that is maintaing table names

Returns:

number of records in each table