Package com.inductiveautomation.ignition.common.xmlserialization.deserialization.handlers

Class NullHandler

java.lang.Object

com.inductiveautomation.ignition.common.xmlserialization.deserialization.handlers.NullHandler

All Implemented Interfaces:

DeserializationHandler

public class NullHandler
extends Object
implements DeserializationHandler

Constructor Summary

Constructors

Constructor	Description
NullHandler()

Method Summary

Modifier and Type	Method	Description
DeserializationHandler	clone()	Clones this handler.
void	endElement(DeserializationContext context)	Notifies the handler that their element has ended.
void	endObject(Object obj)	Notifies the handler that an object tag was found and deserialized within their scope
void	endSubElement(String name, DeserializationContext context)	Notifies the handler that a sub-element has ended
Decoder<?>	getBodyDecoder()	Called when body data is encountered in this tag or a sub-tag.
String	getElementName()	Returns the name of the element type that this handler ...
Object	getObject()	Returns the most recent object that this handler created.
int	getRefId()	Returns the reference id that was in the start of this element, or -1 if there was none
void	onBody(Object body)	Called when body data is encountered in this tag or a sub-tag.
void	setRefId(int id)	Sets the ref-id that was found at the start of this element, if any.
void	startElement(String name, AttributesMap attributes, DeserializationContext context)	Notifies the handler that their element has started.
void	startSubElement(String name, AttributesMap attributes, DeserializationContext context)	Notifies the handler that a sub-element has started.
boolean	supportsNestedElements()	Return true if the element type that you're parsing can have nested elements, or false if you're a singleton element.

Methods inherited from class java.lang.Object

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

Constructor Details

NullHandler

public NullHandler()

Method Details

onBody

public void onBody(Object body)

Description copied from interface: DeserializationHandler

Called when body data is encountered in this tag or a sub-tag. This data is first interpreted by the handler-provided decoder (see DeserializationHandler.getBodyDecoder()), and then this function will be called.

Specified by:

onBody in interface DeserializationHandler

getBodyDecoder

public Decoder<?> getBodyDecoder()

Description copied from interface: DeserializationHandler

Called when body data is encountered in this tag or a sub-tag. Used to decode the body into an object, which is then passed to DeserializationHandler.onBody(Object)

Specified by:

getBodyDecoder in interface DeserializationHandler

endElement

public void endElement(DeserializationContext context)
                throws Exception

Description copied from interface: DeserializationHandler

Notifies the handler that their element has ended.

Specified by:

endElement in interface DeserializationHandler

Throws:

Exception

endObject

public void endObject(Object obj)

Description copied from interface: DeserializationHandler

Notifies the handler that an object tag was found and deserialized within their scope

Specified by:

endObject in interface DeserializationHandler

endSubElement

public void endSubElement(String name,
 DeserializationContext context)
                   throws Exception

Description copied from interface: DeserializationHandler

Notifies the handler that a sub-element has ended

Specified by:

endSubElement in interface DeserializationHandler

Throws:

Exception

getElementName

public String getElementName()

Description copied from interface: DeserializationHandler

Returns the name of the element type that this handler ... handles.

Specified by:

getElementName in interface DeserializationHandler

startElement

public void startElement(String name,
 AttributesMap attributes,
 DeserializationContext context)
                  throws Exception

Description copied from interface: DeserializationHandler

Notifies the handler that their element has started.

Specified by:

startElement in interface DeserializationHandler

Throws:

Exception

startSubElement

public void startSubElement(String name,
 AttributesMap attributes,
 DeserializationContext context)
                     throws Exception

Description copied from interface: DeserializationHandler

Notifies the handler that a sub-element has started.

Specified by:

startSubElement in interface DeserializationHandler

Throws:

Exception

getObject

public Object getObject()

Description copied from interface: DeserializationHandler

Returns the most recent object that this handler created. Note that a handler needs to have this function return its object as early as possible, not just after endElement() has been called. This is used for populating the reference map.

Specified by:

getObject in interface DeserializationHandler

supportsNestedElements

public boolean supportsNestedElements()

Description copied from interface: DeserializationHandler

Return true if the element type that you're parsing can have nested elements, or false if you're a singleton element. If you return true, you need to implement clone().

Note As of Ignition 7.6.5 with support for multi-deserialization, you should also return true from this and implement clone() if your return object is mutable, otherwise instances may be shared amongst multi-deserialized objects.

Specified by:

supportsNestedElements in interface DeserializationHandler

clone

public DeserializationHandler clone()

Description copied from interface: DeserializationHandler

Clones this handler. Only handlers that support nested elements will be cloned, all others can throw an unsupported operation exception instead.

Specified by:

clone in interface DeserializationHandler

Overrides:

clone in class Object

getRefId

public int getRefId()

Description copied from interface: DeserializationHandler

Returns the reference id that was in the start of this element, or -1 if there was none

Specified by:

getRefId in interface DeserializationHandler

setRefId

public void setRefId(int id)

Description copied from interface: DeserializationHandler

Sets the ref-id that was found at the start of this element, if any.

Specified by:

setRefId in interface DeserializationHandler