org.oddjob.arooa.handlers
Class ValueHandler

java.lang.Object
  org.oddjob.arooa.ArooaHandler
      org.oddjob.arooa.handlers.TypicalElementHandler
          org.oddjob.arooa.handlers.ValueHandler

public class ValueHandler

extends TypicalElementHandler

This handler handles nested values. The values are created either with the class attribute or from the tag name using the Constants.VALUE_FACTORY.

The value create is added to the object being configured with a fake element tag which can be specified in the constructor. Even though the element being processed is <xyz> the addConfigured'ElementTag' method of the object currently being configured will be called with the new value.

Note that a value handler will not attempt to call the add'ElementTag' method on value creation, so the value objects created with this handler are only available to the object being configured at runtime, not parse time.

Author:

Rob Gordon.

Field Summary

static java.lang.String

DEFAULT_ELEMENT_TAG The default tag name

Constructor Summary

ValueHandler()
The default consructor.

ValueHandler(java.lang.String elementTag)
Constructor for a hanler which

Method Summary

void	onStartElement(java.lang.String uri, java.lang.String tag, java.lang.String qname, org.xml.sax.Attributes attrs, ArooaContext context) Handles the start of an element.
void	setValueFactory(ObjectFactory valueFactory) Set a value factory.

Methods inherited from class org.oddjob.arooa.handlers.TypicalElementHandler

characters, onStartChild

Methods inherited from class org.oddjob.arooa.ArooaHandler

checkNamespace, onEndChild, onEndElement

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_ELEMENT_TAG

public static final java.lang.String DEFAULT_ELEMENT_TAG

The default tag name

See Also:

Constant Field Values

Constructor Detail

ValueHandler

public ValueHandler()

The default consructor.

ValueHandler

public ValueHandler(java.lang.String elementTag)

Constructor for a hanler which

Parameters:

elementTag -

Method Detail

setValueFactory

public void setValueFactory(ObjectFactory valueFactory)

Set a value factory. This allows the value factory to be temporarily overriden for the processing of just this tag.

Parameters:

valueFactory - The ObjectFactory for creating the values.

onStartElement

public void onStartElement(java.lang.String uri,
                           java.lang.String tag,
                           java.lang.String qname,
                           org.xml.sax.Attributes attrs,
                           ArooaContext context)
                    throws org.xml.sax.SAXParseException

Description copied from class: ArooaHandler

Handles the start of an element. This base implementation does nothing.

Specified by:

onStartElement in class TypicalElementHandler

Throws:

org.xml.sax.SAXParseException