com.ibm.di.fc
Class Function

java.lang.Object
  com.ibm.di.fc.Function

All Implemented Interfaces:

FunctionInterface, VersionInfoInterface

Direct Known Subclasses:

AssemblyLineFC, Axis2WSClientFC, AxisEasyInvokeSoapWS, AxisJavaToSoap, AxisSoapToJava, CastorJavaToXML, CastorXMLToJava, CBEGeneratorFC, ComplexTypesGenerator, EmfSdoToXml, EmfXmlToSdo, InvokeSoapWS, JavaClassFC, MemBufferQFC, ParserFC, RemoteCmdLineFC, SapR3RfcFC, ScriptedFC, SendEMailFC, WrapSoap, zOSTSOCommandLine

public abstract class Function
extends java.lang.Object
implements FunctionInterface, VersionInfoInterface

This abstract class contains a default implementation of all methods in the FunctionInterface except the the perform(obj) method. Every Function Component implementation class should inherit from this class.

Field Summary

protected Log

logger Log

Constructor Summary

Function()

Method Summary

void	debug(java.lang.String aMsg) Writes a message to the log if debug/detailed logging is turned on
BaseConfiguration	getConfiguration() This method returns the function's current configuration
java.lang.Object	getContext() Retrieves used defined context.
boolean	getDebug()
Log	getLog() Returns the logger object in use by this FC
java.lang.Object	getParam(java.lang.String param) Gets a named parameter in the configuration.
RSInterface	getRSInterface() Returns the current RSInterface object in use by this Function.
java.awt.Component	getUI() This method returns null.
void	initialize() Calls initialize(null)
void	initialize(java.lang.Object object) This method is/should be called once after the object has been given its configuration
void	logmsg(java.lang.String msg) Logs a message to the currently used log
java.lang.Object	querySchema(java.lang.Object source) This method translates to whatever means a function component has to discover schema for a connection.
void	setConfiguration(BaseConfiguration configuration) This method is/should be called once after the object has been given its configuration
void	setContext(java.lang.Object aContext) Sets the user defined context.
void	setDebug(boolean debug) Modify the debug mode setting of this component.
void	setLog(Log logger) Sets the logger object to use in this FC
void	setParam(java.lang.String param, java.lang.Object value) Sets a named parameter in the configuration.
void	setRSInterface(RSInterface rsi) Sets the RSInterface object for this Function.
void	terminate() This method is/should be called once before the object is released
boolean	updateSchema(FunctionConfig config) This method modifies the schema.
void	verifyInitialized() Verifies that initialize() has been called at least once after the FC has been loaded or the terminate() method has been called.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.ibm.di.fc.FunctionInterface

perform

Methods inherited from interface com.ibm.di.server.VersionInfoInterface

getVersion

Field Detail

logger

protected Log logger

Log

Constructor Detail

Function

public Function()

Method Detail

initialize

public void initialize(java.lang.Object object)
                throws java.lang.Exception

This method is/should be called once after the object has been given its configuration

Specified by:

initialize in interface FunctionInterface

Parameters:

object -

Throws:

java.lang.Exception

terminate

public void terminate()
               throws java.lang.Exception

This method is/should be called once before the object is released

Specified by:

terminate in interface FunctionInterface

Throws:

java.lang.Exception

setConfiguration

public void setConfiguration(BaseConfiguration configuration)

This method is/should be called once after the object has been given its configuration

Specified by:

setConfiguration in interface FunctionInterface

Parameters:

configuration - BaseConfiguration

getConfiguration

public BaseConfiguration getConfiguration()

This method returns the function's current configuration

Specified by:

getConfiguration in interface FunctionInterface

Returns:

BaseConfiguration

getUI

public java.awt.Component getUI()

This method returns null.

Specified by:

getUI in interface FunctionInterface

Returns:

null

updateSchema

public boolean updateSchema(FunctionConfig config)
                     throws java.lang.Exception

This method modifies the schema. The intent is to allow the FC to provide a dynamic schema definition based on a given configuration. The default implementation simply ignores the call.

Specified by:

updateSchema in interface FunctionInterface

Parameters:

config - FunctionConfig

Returns:

boolean

Throws:

java.lang.Exception

getParam

public java.lang.Object getParam(java.lang.String param)

Gets a named parameter in the configuration.

Specified by:

getParam in interface FunctionInterface

Parameters:

param - the name of the parameter whose value this method returns

Returns:

the value of the parameter

setParam

public void setParam(java.lang.String param,
                     java.lang.Object value)

Sets a named parameter in the configuration.

Specified by:

setParam in interface FunctionInterface

Parameters:

param - The new parameter's name

value - The new parameter value

logmsg

public void logmsg(java.lang.String msg)

Logs a message to the currently used log

Specified by:

logmsg in interface FunctionInterface

Parameters:

msg - The message appearing in the log

setLog

public void setLog(Log logger)

Sets the logger object to use in this FC

Specified by:

setLog in interface FunctionInterface

Parameters:

logger - The log object

getLog

public Log getLog()

Returns the logger object in use by this FC

Specified by:

getLog in interface FunctionInterface

Returns:

The log object

initialize

public void initialize()
                throws java.lang.Exception

Calls initialize(null)

Throws:

java.lang.Exception

debug

public void debug(java.lang.String aMsg)

Writes a message to the log if debug/detailed logging is turned on

Specified by:

debug in interface FunctionInterface

Parameters:

aMsg - The message

verifyInitialized

public void verifyInitialized()
                       throws java.lang.Exception

Verifies that initialize() has been called at least once after the FC has been loaded or the terminate() method has been called.

Throws:

java.lang.Exception - thrown if initialize() hasn't been called

getContext

public java.lang.Object getContext()

Retrieves used defined context.

Specified by:

getContext in interface FunctionInterface

Returns:

the user defined context.

setContext

public void setContext(java.lang.Object aContext)

Sets the user defined context.

Specified by:

setContext in interface FunctionInterface

Parameters:

aContext - String

querySchema

public java.lang.Object querySchema(java.lang.Object source)
                             throws java.lang.Exception

This method translates to whatever means a function component has to discover schema for a connection. The specific FC may implement this, in which case a Vector of Entry objects is returned for each column/attribute it discovered.

Each Entry in the Vector returned should contain the following attributes:

Name	Value
name	The name of the column/attribute/field ....
syntax	The syntax or expected value type
size	If specified this will give the user a hint as to how long the field may be

Specified by:

querySchema in interface FunctionInterface

Parameters:

source - The object on which to discover schema. This may be an Entry or a string value. Boolean value will tell which schema to discover: true - InputMapSchema, false - OutputMapSchema. If not specified the default will be true. Might be a FunctionConfig object which will be set as the configuration of this object. Could be an array of objects (i.e. Object[]). Only the first object of a specific type will be considered, the rest (if any) will be ignored.

Returns:

A Vector of com.ibm.di.entry.Entry objects describing each entity

Throws:

java.lang.Exception

See Also:

Entry, Vector

getDebug

public boolean getDebug()

Returns:

Whether this component is in debug mode. May be called by different threads.

Since:

7.0

setDebug

public void setDebug(boolean debug)

Modify the debug mode setting of this component. May be called by different threads.

This method is for internal use only. Do not call it from user code.

Parameters:

debug - the debug mode setting

Since:

7.0

setRSInterface

public void setRSInterface(RSInterface rsi)

Sets the RSInterface object for this Function.

Specified by:

setRSInterface in interface FunctionInterface

getRSInterface

public RSInterface getRSInterface()

Returns the current RSInterface object in use by this Function. If not set, return com.ibm.di.server.RS.getServer()

Specified by:

getRSInterface in interface FunctionInterface

Returns:

Function's RSInterface object