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java.lang.Objectuk.ac.starlink.datanode.nodes.DefaultDataNode
uk.ac.starlink.datanode.nodes.TarStreamDataNode
public class TarStreamDataNode
DataNode representing a Tar archive.
Constructor Summary | |
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TarStreamDataNode(DataSource datsrc)
Constructs a TarStreamDataNode from a DataSource. |
Method Summary | |
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boolean |
allowsChildren()
The DefaultDataNode implementation of this method returns false. |
Iterator |
getChildIterator()
The DefaultDataNode implementation of this method throws UnsupportedOperationException ( DefaultDataNode.allowsChildren() is false). |
protected List |
getEntriesAtLevel(String level)
Returns a list of all the entries in this archive whose name starts with a given string. |
String |
getName()
Gets the name of this object. |
String |
getNodeTLA()
The DefaultDataNode implementation returns the string "...". |
String |
getNodeType()
Returns a short sentence indicating what kind of node this is. |
String |
getPathSeparator()
Returns a default separator string. |
static boolean |
isMagic(byte[] magic)
Indicates whether the given bytes look like the start of a tar archive. |
Methods inherited from class uk.ac.starlink.datanode.nodes.DefaultDataNode |
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beep, configureDetail, getChildMaker, getCreator, getDataObject, getDescription, getIcon, getLabel, getParentObject, getPathElement, hasDataObject, makeChild, makeErrorChild, registerDataObject, setChildMaker, setCreator, setDescription, setIconID, setLabel, setName, setParentObject, toString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public TarStreamDataNode(DataSource datsrc) throws NoSuchDataException
datsrc
- the source
NoSuchDataException
Method Detail |
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public String getName()
DataNode
getName
in interface DataNode
getName
in class DefaultDataNode
public String getPathSeparator()
DefaultDataNode
getPathSeparator
in interface DataNode
getPathSeparator
in class DefaultDataNode
public String getNodeTLA()
DefaultDataNode
getNodeTLA
in interface DataNode
getNodeTLA
in class DefaultDataNode
public String getNodeType()
DataNode
getNodeType
in interface DataNode
getNodeType
in class DefaultDataNode
DataNode
public boolean allowsChildren()
DefaultDataNode
allowsChildren
in interface DataNode
allowsChildren
in class DefaultDataNode
true
if the node is of a type which can have
child nodes, false
otherwisepublic Iterator getChildIterator()
DefaultDataNode
DefaultDataNode.allowsChildren()
is false).
getChildIterator
in interface DataNode
getChildIterator
in class DefaultDataNode
Iterator
over the children. Each object
iterated over should be a DataNode
.
Behaviour is undefined if this method is called on an
object for which allowsChildren
returns
false
.protected List getEntriesAtLevel(String level) throws IOException
level
- the required prefix
IOException
public static boolean isMagic(byte[] magic)
magic
- a buffer of bytes containing at least the first
264 bytes of a potential tar stream
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