Package uk.ac.starlink.datanode.nodes
Class EmptyDataNode
java.lang.Object
uk.ac.starlink.datanode.nodes.DefaultDataNode
uk.ac.starlink.datanode.nodes.EmptyDataNode
- All Implemented Interfaces:
DataNode
Blank node.
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionbooleanThe DefaultDataNode implementation of this method returns false.The DefaultDataNode implementation of this method throws UnsupportedOperationException (DefaultDataNode.allowsChildren()is false).getName()Gets the name of this object.toString()Methods inherited from class uk.ac.starlink.datanode.nodes.DefaultDataNode
beep, configureDetail, getChildMaker, getCreator, getDataObject, getDescription, getIcon, getLabel, getNodeTLA, getNodeType, getParentObject, getPathElement, getPathSeparator, hasDataObject, makeChild, makeErrorChild, registerDataObject, setChildMaker, setCreator, setDescription, setIconID, setLabel, setName, setParentObject
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Constructor Details
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EmptyDataNode
public EmptyDataNode()
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Method Details
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allowsChildren
public boolean allowsChildren()Description copied from class:DefaultDataNodeThe DefaultDataNode implementation of this method returns false.- Specified by:
allowsChildrenin interfaceDataNode- Overrides:
allowsChildrenin classDefaultDataNode- Returns:
trueif the node is of a type which can have child nodes,falseotherwise
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getChildIterator
Description copied from class:DefaultDataNodeThe DefaultDataNode implementation of this method throws UnsupportedOperationException (DefaultDataNode.allowsChildren()is false).- Specified by:
getChildIteratorin interfaceDataNode- Overrides:
getChildIteratorin classDefaultDataNode- Returns:
- an
Iteratorover the children. Each object iterated over should be aDataNode. Behaviour is undefined if this method is called on an object for whichallowsChildrenreturnsfalse.
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getName
Description copied from interface:DataNodeGets the name of this object. This is an intrinsic property of the object.- Specified by:
getNamein interfaceDataNode- Overrides:
getNamein classDefaultDataNode- Returns:
- the name of the object
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toString
- Overrides:
toStringin classDefaultDataNode
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