Package org.simpleframework.xml.stream
Interface EventNode
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- All Superinterfaces:
java.lang.Iterable<Attribute>
- All Known Implementing Classes:
DocumentReader.End
,DocumentReader.Start
,DocumentReader.Text
,EventElement
,EventToken
,PullReader.End
,PullReader.Start
,PullReader.Text
,StreamReader.End
,StreamReader.Start
,StreamReader.Text
interface EventNode extends java.lang.Iterable<Attribute>
TheEventNode
object is used to represent an event that has been extracted from the XML document. Events provide a framework neutral way to represent a token from the source XML. It provides the name and value of the event, if applicable, and also provides namespace information. Some nodes will have associatedAttribute
objects, typically these will be the XML element events. Also, if available, the event will provide the line number the event was encountered in the XML.- See Also:
EventReader
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description int
getLine()
This is used to provide the line number the XML event was encountered at within the XML document.java.lang.String
getName()
This provides the name of the event.java.lang.String
getPrefix()
This is used to acquire the namespace prefix associated with this node.java.lang.String
getReference()
This is used to acquire the namespace reference that this node is in.java.lang.Object
getSource()
This is used to return the source of the event.java.lang.String
getValue()
This returns the value of the event.boolean
isEnd()
This is true when the node represents an element close.boolean
isStart()
This is true when the node represents a new element.boolean
isText()
This is true when the node represents a text token.
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Method Detail
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getLine
int getLine()
This is used to provide the line number the XML event was encountered at within the XML document. If there is no line number available for the node then this will return a -1.- Returns:
- this returns the line number if it is available
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getName
java.lang.String getName()
This provides the name of the event. Typically this will be the name of an XML element if the event represents an element. If however the event represents a text token or an element close token then this method may return null for the name.- Returns:
- this returns the name of this event or null
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getValue
java.lang.String getValue()
This returns the value of the event. Typically this will be the text value that the token contains. If the event does not contain a value then this returns null. Only text events are required to produce a value via this methods.- Returns:
- this returns the value represented by this event
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getReference
java.lang.String getReference()
This is used to acquire the namespace reference that this node is in. A namespace is normally associated with an XML element or attribute, so text events and element close events are not required to contain any namespace references.- Returns:
- this will provide the associated namespace reference
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getPrefix
java.lang.String getPrefix()
This is used to acquire the namespace prefix associated with this node. A prefix is used to qualify an XML element or attribute within a namespace. So, if this represents a text event then a namespace prefix is not required.- Returns:
- this returns the namespace prefix for this event
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getSource
java.lang.Object getSource()
This is used to return the source of the event. Depending on which provider was selected to parse the XML document an object for the internal parsers representation of the event will be returned. This is useful for debugging purposes.- Returns:
- this will return the source object for this event
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isEnd
boolean isEnd()
This is true when the node represents an element close. Such events are required by the core reader to determine if a node is still in context. This helps to determine if there are any more children to be read from a specific node.- Returns:
- this returns true if the event is an element close
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isStart
boolean isStart()
This is true when the node represents a new element. This is the core event type as it contains the element name and any associated attributes. The core reader uses this to compose the input nodes that are produced.- Returns:
- this returns true if the event represents an element
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isText
boolean isText()
This is true when the node represents a text token. Text tokens are required to provide a value only. So namespace details and the node name will typically return null.- Returns:
- this returns true if this represents text
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