Package org.apache.log.output.db

Class DefaultJDBCTarget

java.lang.Object

org.apache.log.output.AbstractTarget

org.apache.log.output.db.AbstractJDBCTarget

org.apache.log.output.db.DefaultJDBCTarget

All Implemented Interfaces:

ErrorAware, LogTarget, Closeable

Direct Known Subclasses:

NormalizedJDBCTarget

public class DefaultJDBCTarget
extends AbstractJDBCTarget

The basic DB target for configurable output formats.

Author:

Avalon Development Team, Peter Donald

Field Summary

Fields

Modifier and Type	Field	Description
private ColumnInfo[]	m_columns
private java.sql.PreparedStatement	m_statement
private java.lang.String	m_table

Constructor Summary

Constructors

Constructor	Description
DefaultJDBCTarget(javax.sql.DataSource dataSource, java.lang.String table, ColumnInfo[] columns)	Creation of a new JDBC logging target.

Method Summary

Modifier and Type	Method	Description
protected void	closeConnection()	Close connection to underlying database.
protected ColumnInfo	getColumn(int index)	Return the column info for an supplied index.
private java.lang.String	getContextMap(ContextMap map, java.lang.String aux)
private java.lang.String	getStackTrace(java.lang.Throwable throwable)
protected java.lang.String	getStatementSQL()	Return the SQL insert statement.
protected java.lang.String	getTable()	Return the underlying table
protected boolean	isStale()	Test if the target is stale.
protected void	openConnection()	Open connection to underlying database.
protected void	output(LogEvent event)	Output a log event to DB.
protected void	specifyColumn(java.sql.PreparedStatement statement, int index, LogEvent event)	Adds a single object into statement.

Methods inherited from class org.apache.log.output.db.AbstractJDBCTarget

checkConnection, close, doProcessEvent, getConnection, open

Methods inherited from class org.apache.log.output.AbstractTarget

getErrorHandler, isOpen, processEvent, setErrorHandler

Methods inherited from class java.lang.Object

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

Field Detail

m_table

private final java.lang.String m_table

m_columns

private final ColumnInfo[] m_columns

m_statement

private java.sql.PreparedStatement m_statement

Constructor Detail

DefaultJDBCTarget

public DefaultJDBCTarget(javax.sql.DataSource dataSource,
                         java.lang.String table,
                         ColumnInfo[] columns)

Creation of a new JDBC logging target.

Parameters:

dataSource - the JDBC datasource

table - the table

columns - a ColumnInfo array

Method Detail

output

protected void output(LogEvent event)

Output a log event to DB. This must be implemented by subclasses.

Specified by:

output in class AbstractJDBCTarget

Parameters:

event - the log event.

openConnection

protected void openConnection()

Open connection to underlying database.

Overrides:

openConnection in class AbstractJDBCTarget

getStatementSQL

protected java.lang.String getStatementSQL()

Return the SQL insert statement.

Returns:

the statement

isStale

protected boolean isStale()

Test if the target is stale.

Overrides:

isStale in class AbstractJDBCTarget

Returns:

TRUE if the target is stale else FALSE

closeConnection

protected void closeConnection()

Close connection to underlying database.

Overrides:

closeConnection in class AbstractJDBCTarget

specifyColumn

protected void specifyColumn(java.sql.PreparedStatement statement,
                             int index,
                             LogEvent event)
                      throws java.sql.SQLException,
                             java.lang.IllegalStateException

Adds a single object into statement.

Parameters:

statement - the prepard statement

index - the index

event - the log event

Throws:

java.sql.SQLException - if an SQL related error occurs

java.lang.IllegalStateException - if the supplied index is out of bounds

getTable

protected final java.lang.String getTable()

Return the underlying table

Returns:

the table name

getColumn

protected final ColumnInfo getColumn(int index)

Return the column info for an supplied index.

Parameters:

index - the index

Returns:

the column info

getStackTrace

private java.lang.String getStackTrace(java.lang.Throwable throwable)

getContextMap

private java.lang.String getContextMap(ContextMap map,
                                       java.lang.String aux)