js.lang

Class ConfigBuilder.Loader

java.lang.Object

org.xml.sax.helpers.DefaultHandler

js.lang.ConfigBuilder.Loader

All Implemented Interfaces:

ContentHandler, DTDHandler, EntityResolver, ErrorHandler

Enclosing class:

ConfigBuilder

private static class ConfigBuilder.Loader
extends DefaultHandler

SAX handler for configuration object loading from XML source.

Version:

final

Author:

Iulian Rotaru

Field Summary

Fields

Modifier and Type	Field and Description
private Stack<Config>	stack Keep track of nested configuration objects.
private StringBuilder	textBuilder String builder for text content.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	Loader()

Method Summary

Modifier and Type	Method and Description
void	characters(char[] ch, int start, int length) Load characters into text builder.
void	endElement(String uri, String localName, String qName) If text builder is not empty set text content to last configuration object from stack.
Config	getConfig() Get configuration object loaded from XML source.
void	startElement(String uri, String localName, String qName, Attributes attributes) Create configuration object with tag name and initialize its attributes.
private static String	value(Attributes attributes, String attributeName) Get named attribute value throwing exception if not attribute found.

Methods inherited from class org.xml.sax.helpers.DefaultHandler

endDocument, endPrefixMapping, error, fatalError, ignorableWhitespace, notationDecl, processingInstruction, resolveEntity, setDocumentLocator, skippedEntity, startDocument, startPrefixMapping, unparsedEntityDecl, warning

Methods inherited from class java.lang.Object

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

Field Detail

stack

private Stack<Config> stack

Keep track of nested configuration objects.

textBuilder

private StringBuilder textBuilder

String builder for text content.

Constructor Detail

Loader

private Loader()

Method Detail

getConfig

public Config getConfig()

Get configuration object loaded from XML source.

Returns:

configuration object.

startElement

public void startElement(String uri,
                         String localName,
                         String qName,
                         Attributes attributes)
                  throws SAXException

Create configuration object with tag name and initialize its attributes. If tag name is property add new property to last configuration object from stack. In any case reset text builder.

Specified by:

startElement in interface ContentHandler

Overrides:

startElement in class DefaultHandler

Throws:

SAXException

endElement

public void endElement(String uri,
                       String localName,
                       String qName)
                throws SAXException

If text builder is not empty set text content to last configuration object from stack. If element tag is not property pop most recent configuration object from stack.

Specified by:

endElement in interface ContentHandler

Overrides:

endElement in class DefaultHandler

Throws:

SAXException

characters

public void characters(char[] ch,
                       int start,
                       int length)
                throws SAXException

Load characters into text builder.

Specified by:

characters in interface ContentHandler

Overrides:

characters in class DefaultHandler

Throws:

SAXException

value

private static String value(Attributes attributes,
                            String attributeName)
                     throws SAXException

Get named attribute value throwing exception if not attribute found.

Parameters:

attributes - attributes list,

attributeName - name of attribute to retrieve.

Returns:

attribute value.

Throws:

SAXException - if there is no attribute with requested name.