olg.csv.bean.loader
Class AbstractFormatterLoader

java.lang.Object
  olg.csv.bean.loader.AbstractFormatterLoader

Direct Known Subclasses:

AbstractFormatterLoader.CustomFormatterLoader, AbstractFormatterLoader.DateFormatterLoader

public abstract class AbstractFormatterLoader
extends Object

Class dedicated to load a formatter Formatter from an XML element conformed to XML schema FormatterType specification. Each concret class shall have the responsibility to load a concrete Formatter class.

Class based on Chain of responsability pattern and used to chain concret Formatter Loaders.

Nested Class Summary

private static class	AbstractFormatterLoader.CustomFormatterLoader Class responsible of CustomFormatter loading.
private static class	AbstractFormatterLoader.DateFormatterLoader Class responsible of DateFormatter loading.

Field Summary

private static AbstractFormatterLoader	instance Singleton instance to use to load Formatter.
protected AbstractFormatterLoader	successor FormatterLoader successor as describe in Chain of responsability pattern.
protected String	xPathExpression This Xpath expression allows to identify xml node which describe the corresponding concret formatter under formatterType node.

Constructor Summary

protected

AbstractFormatterLoader(String xPathExpression, AbstractFormatterLoader successor)

Method Summary

protected abstract Formatter<?>	getConcreteFormatter(Element node) Returns a concret formatter.
Formatter<?>	getFormatter(Element element) Returns a concret formatter identified from the given XML element.
static AbstractFormatterLoader	getInstance() Returns singleton responsible of formatters loading.

Methods inherited from class java.lang.Object

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

Field Detail

instance

private static AbstractFormatterLoader instance

Singleton instance to use to load Formatter.

successor

protected AbstractFormatterLoader successor

FormatterLoader successor as describe in Chain of responsability pattern.

xPathExpression

protected String xPathExpression

This Xpath expression allows to identify xml node which describe the corresponding concret formatter under formatterType node.

Constructor Detail

AbstractFormatterLoader

protected AbstractFormatterLoader(String xPathExpression,
                                  AbstractFormatterLoader successor)

Parameters:

xPathExpression - XPath expression that allows to identify the concret formatter under the XML FormatterType node

successor - following concret loader in the chain of responsability

Method Detail

getInstance

public static AbstractFormatterLoader getInstance()

Returns singleton responsible of formatters loading. This is this instance you have to be used to load every type of formatters from XML element conformed to XML Schema FormatterType specification.

Returns:

the AbstractFormatter loader

getFormatter

public final Formatter<?> getFormatter(Element element)
                                throws XPathExpressionException,
                                       LoadException

Returns a concret formatter identified from the given XML element.

Parameters:

element - XML node corresponding to correspondant to XML FormatterType as described in our XML schema.

Returns:

a concret formatter or null if the given element doesn't match the concret formatter type this loader has responsability and doesn't match any successor

Throws:

XPathExpressionException - on invalid XPathExpression

LoadException - on Error occurs during loading

getConcreteFormatter

protected abstract Formatter<?> getConcreteFormatter(Element node)
                                              throws XPathExpressionException,
                                                     LoadException

Returns a concret formatter.

Parameters:

node - XML Element corresponding to the XPath expression. From this element a concret formatter this loader should return will be extracted

Returns:

a concret formatter this loader has responsability or null if the given node doesn't match the type this loader should return

Throws:

XPathExpressionException - on invalid XPathExpression

LoadException - on Error occurs during loading

See Also:

xPathExpression