fr.gael.drb.impl.zip
Class ZipNode

java.lang.Object
  fr.gael.drb.DrbDefaultNodesChangeProducer
      fr.gael.drb.DrbAbstractNode
          fr.gael.drb.impl.DrbNodeImpl
              fr.gael.drb.impl.zip.ZipNode

All Implemented Interfaces:

DrbMutableNode, DrbNode, DrbNodesChangeListener, DrbNodesChangeProducer, EventListener

public class ZipNode
extends DrbNodeImpl

This class is used to Zip Node implementation.

Field Summary

Fields inherited from interface fr.gael.drb.DrbItem

ATTRIBUTE_ITEM, NODE_ITEM, UNDEFINED_ITEM, VALUE_ITEM

Constructor Summary

protected

ZipNode(ZipFileNode zipfilen, ZipEntry zipentry, DrbNode parent, ZipEntry[] children) Builds a new zipFile from a ZipFileNode and a zipEntry.

Method Summary

boolean	allowsMultiOccurrence() Check if this node may have multiple occurrence
boolean	equals(Object obj) Indicates whether this node is "equal to" to another node.
DrbAttributeList	getAttributes() The attributes of the node The file nodes node have no specific attribute and this operation returns therefore a nullvalue at each call.
DrbNodeList	getChildren() The children of the current node.
Object	getImpl(Class api) Provide other implementation.
String	getName() Name of the node.
DrbNode	getParent() The parent of the current node.
protected ZipEntry	getZipEntry() Get the zip entry of the zip file
protected ZipFileNode	getZipFileNode() Get the zip file node
boolean	hasChild() Checks if any child exists.
boolean	hasImpl(Class api) Checks any implementation.

Methods inherited from class fr.gael.drb.impl.DrbNodeImpl

close, createAttribute, createNode, flush, getProvider

Methods inherited from class fr.gael.drb.DrbAbstractNode

appendChild, appendReference, getAttribute, getChildAt, getChildrenCount, getContent, getFirstChild, getIndex, getItemType, getLastChild, getNamedChild, getNamespaceBindings, getNamespaceURI, getNextSibling, getOccurrence, getPath, getPreviousSibling, getRoot, getValue, getValueType, getXPathName, getXPathName, insertChild, removeChild, rename, replaceChild, setAttributes, setNamespaceBindings, setNamespaceURI, setValue, toString

Methods inherited from class fr.gael.drb.DrbDefaultNodesChangeProducer

addNodesChangeListener, getListenerList, nodesChanged, nodesInserted, nodesRemoved, removeNodesChangeListener, setListenerList, structureChanged

Methods inherited from class java.lang.Object

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

Constructor Detail

ZipNode

protected ZipNode(ZipFileNode zipfilen,
                  ZipEntry zipentry,
                  DrbNode parent,
                  ZipEntry[] children)

Builds a new zipFile from a ZipFileNode and a zipEntry.

Parameters:

zipfilen - the zip file node

parent - The parent of this node

zipentry - the zip entry

children - the list of children

Method Detail

equals

public boolean equals(Object obj)

Indicates whether this node is "equal to" to another node. See Object.equals() for the general contract of this method.

Overrides:

equals in class DrbAbstractNode

Parameters:

obj - another value.

Returns:

true if this object is the same as the obj argument

getName

public String getName()

Name of the node. Returns the name of the node. This name is the canonical name of the node. It does not contains any prefix, path and location part. This name clearly identifies the node in its parent depending only from its occurence number and its index. All nodes provided by an implementation is named. Therefore this operation never returns null value. An empty string is however allowed if the node is unique (e.g. non named root node).

Overrides:

getName in class DrbAbstractNode

Returns:

The name of the node.

allowsMultiOccurrence

public boolean allowsMultiOccurrence()

Check if this node may have multiple occurrence

Overrides:

allowsMultiOccurrence in class DrbAbstractNode

Returns:

true if the children may have a multiple occurrence and false otherwise.

hasChild

public boolean hasChild()

Checks if any child exists. Returns wheter the current node has at least a child.

Overrides:

hasChild in class DrbAbstractNode

Returns:

true if this node has any children, false otherwise.

getChildren

public DrbNodeList getChildren()

The children of the current node. This operation returns all entries in the ZIP archive.

Specified by:

getChildren in class DrbAbstractNode

Returns:

The list of children if any or null otherwise.

hasImpl

public boolean hasImpl(Class api)

Checks any implementation.

Overrides:

hasImpl in class DrbNodeImpl

Parameters:

api - the class

Returns:

false.

getImpl

public Object getImpl(Class api)

Provide other implementation.

Overrides:

getImpl in class DrbNodeImpl

Parameters:

api - the class

Returns:

null.

getZipEntry

protected ZipEntry getZipEntry()

Get the zip entry of the zip file

Returns:

the zip entry

getZipFileNode

protected ZipFileNode getZipFileNode()

Get the zip file node

Returns:

the zip file node

getParent

public DrbNode getParent()

The parent of the current node. The base node (the one of the underlying implementation) is always returned.

Specified by:

getParent in class DrbAbstractNode

Returns:

A reference to the parent node if any or null otherwise.

getAttributes

public final DrbAttributeList getAttributes()

The attributes of the node The file nodes node have no specific attribute and this operation returns therefore a nullvalue at each call. The attributes are:

The following table specifies the attributes that are available for a file. No atribute is provided optionally. The type of the attribute are expressed using the type identifer of the fr.gael.drb.value.Value class.

Name	Description	Value Type
size	the length of the file in bytes. If the file is a directory, the size is equal to 0.	UNSIGNED_LONG_ID
ratio	the percentage of compression. If the file is a directory, the percentage of compression is equal to 0. It corresponds to the size divided by compressed size	STRING_ID
size compressed	the length of the file compressed in bytes. If the file is a directory, the size is equal to 0.	UNSIGNED_LONG_ID

Overrides:

getAttributes in class DrbAbstractNode

Returns:

The list of all the attributs if any or null otherwise.