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XMLFileSystem (NetBeans File Systems API) - NetBeans API Javadoc 5.5.0

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org.openide.filesystems
Class XMLFileSystem

java.lang.Object
  org.openide.filesystems.FileSystem
      org.openide.filesystems.AbstractFileSystem
          org.openide.filesystems.XMLFileSystem

All Implemented Interfaces:

Serializable

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public final class XMLFileSystem
extends AbstractFileSystem

XML-based filesystem.

  Description of format of XML file (which can be parsed by XMLFileSystem)
 ==================================================================
 Allowed Elements:        filesystem,file,folder,attr

 Mandatory attributes:
         -for filesystem    version=... (e.g. "1.0")
         -for file,folder,attr name=....  (e.g.: <folder name="Config">)
         -for attr is mandatory one of bytevalue,shortvalue,intvalue,longvalue,floatvalue,doublevalue,boolvalue,charvalue,stringvalue,methodvalue,serialvalue,urlvalue

 Allowed atributes:
         -for file:        url=.... (e.g.: <file name="sample.xml" url="file:/c:/sample.xml">)
         -for folder,filesystem        nothing allowed



 Note: file can contain         content e.g.:
  < file name="sample.java">
 < ![CDATA[
 package org.sample;
 import java.io;
 ]]>
 < /file>
 But using url="..." is preferred.


 This class implements virtual FileSystem. It is special case of FileSystem in XML format.

 Description of this format best ilustrate DTD file that is showed in next lines:
 < !ELEMENT filesystem (file | folder)*>
 < !ATTLIST filesystem version CDATA #REQUIRED> //version not checkked yet
 < !ELEMENT folder (file |folder | attr)*>
 < !ATTLIST folder name CDATA #REQUIRED> //name of folder
 < !ELEMENT file (#PCDATA | attr)*>
 < !ATTLIST file name CDATA #REQUIRED> //name of file
 < !ATTLIST file url CDATA #IMPLIED> //content of the file can be find at url
 < !ELEMENT attr EMPTY>
 < !ATTLIST attr name CDATA #REQUIRED> //name of attribute
 < !ATTLIST attr bytevalue CDATA #IMPLIED>//the rest - types of attributes
 < !ATTLIST attr shortvalue CDATA #IMPLIED>
 < !ATTLIST attr intvalue CDATA #IMPLIED>
 < !ATTLIST attribute longvalue CDATA #IMPLIED>
 < !ATTLIST attr floatvalue CDATA #IMPLIED>
 < !ATTLIST attr doublevalue CDATA #IMPLIED>
 < !ATTLIST attr boolvalue CDATA #IMPLIED>
 < !ATTLIST attr charvalue CDATA #IMPLIED>
 < !ATTLIST attr stringvalue CDATA #IMPLIED>
 < !ATTLIST attr methodvalue CDATA #IMPLIED>
 < !ATTLIST attr serialvalue CDATA #IMPLIED>
 < !ATTLIST attr urlvalue CDATA #IMPLIED>
 

See Also:

Serialized Form

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Nested Class Summary
static class	XMLFileSystem.Impl           Implementation of all interfaces List, Change, Info and Attr that delegates to XMLFileSystem

 

Nested classes/interfaces inherited from class org.openide.filesystems.AbstractFileSystem
AbstractFileSystem.Attr, AbstractFileSystem.Change, AbstractFileSystem.Info, AbstractFileSystem.List, AbstractFileSystem.Transfer

 

Nested classes/interfaces inherited from class org.openide.filesystems.FileSystem
FileSystem.AtomicAction, FileSystem.Environment, FileSystem.HtmlStatus, FileSystem.Status

 

Field Summary

 

Fields inherited from class org.openide.filesystems.AbstractFileSystem
attr, change, info, list, transfer

 

Fields inherited from class org.openide.filesystems.FileSystem
PROP_DISPLAY_NAME, PROP_HIDDEN, PROP_READ_ONLY, PROP_ROOT, PROP_SYSTEM_NAME, PROP_VALID

 

Constructor Summary
XMLFileSystem()           Constructor.
XMLFileSystem(FileSystemCapability cap)           Deprecated. Useless.
XMLFileSystem(String uri)           Constructor.
XMLFileSystem(URL url)           Constructor.

 

Method Summary
void	addNotify()           Notifies this filesystem that it has been added to the repository.
protected  Reference	createReference(FileObject fo)           Creates Reference.
String	getDisplayName()           Provides a name for the system that can be presented to the user.
URL	getXmlUrl()           Getter of url field.
URL[]	getXmlUrls()           Deprecated. experimental method. Nobody should rely on this method yet.
boolean	isReadOnly()           Test if the filesystem is read-only or not.
void	removeNotify()           Notifies this filesystem that it has been removed from the repository.
void	setXmlUrl(URL url)           Setter of url field.
void	setXmlUrl(URL url, boolean validate)           Setter of url field.
void	setXmlUrls(URL[] urls)           Setter of url fields.

 

Methods inherited from class org.openide.filesystems.AbstractFileSystem
canRead, canWrite, checkVirtual, existingFileObjects, find, findReference, findResource, getActions, getRefreshTime, getRoot, markImportant, refresh, refreshResource, refreshRoot, setRefreshTime

 

Methods inherited from class org.openide.filesystems.FileSystem

addFileChangeListener, addFileStatusListener, addPropertyChangeListener, addVetoableChangeListener, fireFileStatusChanged, firePropertyChange, fireVetoableChange, getActions, getCapability, getStatus, getSystemName, isDefault, isHidden, isPersistent, isValid, prepareEnvironment, removeFileChangeListener, removeFileStatusListener, removePropertyChangeListener, removeVetoableChangeListener, runAtomicAction, setCapability, setHidden, setSystemName, toString

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

 

Constructor Detail

XMLFileSystem

public XMLFileSystem()

Constructor. Creates new XMLFileSystem

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XMLFileSystem

public XMLFileSystem(String uri)
              throws SAXException

Constructor. Creates new XMLFileSystem.

Parameters:

uri - to file with definition of XMLFileSystem

Throws:

SAXException - if parsing is not succesful

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XMLFileSystem

public XMLFileSystem(URL url)
              throws SAXException

Constructor. Creates new XMLFileSystem.

Parameters:

url - to definition of XMLFileSystem

Throws:

SAXException - if parsing not succesful

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XMLFileSystem

public XMLFileSystem(FileSystemCapability cap)

Deprecated. Useless.

Constructor. Allows user to provide own capabilities for this filesystem.

Parameters:

cap - capabilities for this filesystem

Method Detail

getXmlUrl

public URL getXmlUrl()

Getter of url field.

Returns:

URL associated with XMLFileSystem or null if no URL was set. In case that definition of XMLFileSystem is merged from more URLs than the first is returned.

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setXmlUrl

public void setXmlUrl(URL url)
               throws IOException,
                      PropertyVetoException

Setter of url field. Set name of the XML file.

Parameters:

url - with definition of XMLFileSystem

Throws:

PropertyVetoException - if the change is not allowed by a listener

IOException - if the file is not valid

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setXmlUrl

public void setXmlUrl(URL url,
                      boolean validate)
               throws IOException,
                      PropertyVetoException

Setter of url field. Set name of the XML file.

Parameters:

url - with definition of XMLFileSystem

validate - sets validating of SAXParser

Throws:

PropertyVetoException - if the change is not allowed by a listener

IOException - if the file is not valid

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getXmlUrls

public URL[] getXmlUrls()

Deprecated. experimental method. Nobody should rely on this method yet.

Getter of url fields.

Returns:

URLs associated with XMLFileSystem.

Since:

1.14

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setXmlUrls

public void setXmlUrls(URL[] urls)
                throws IOException,
                       PropertyVetoException

Setter of url fields. First URL in array sets name of XMLFileSystem. If more then one url in array of URLs defines the same FileObject, then url with lower index in array overrides (means content and attributes) the other.

Parameters:

urls - array of definitions (in xml form) of XMLFileSystem

Throws:

IOException - if the file is not valid

PropertyVetoException - if the change is not allowed by a listener

Since:

1.14

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getDisplayName

public String getDisplayName()

Provides a name for the system that can be presented to the user.

Specified by:

getDisplayName in class AbstractFileSystem

Returns:

user presentable name of the filesystem

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isReadOnly

public boolean isReadOnly()

Test if the filesystem is read-only or not.

Specified by:

isReadOnly in class FileSystem

Returns:

true if the system is read-only

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addNotify

public void addNotify()

Notifies this filesystem that it has been added to the repository. Various initialization tasks should go here. Default implementation is noop.

Overrides:

addNotify in class FileSystem

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removeNotify

public void removeNotify()

Notifies this filesystem that it has been removed from the repository. Concrete filesystem implementations should perform clean-up here. Default implementation is noop.

Overrides:

removeNotify in class FileSystem

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createReference

protected Reference createReference(FileObject fo)

Description copied from class: AbstractFileSystem

Creates Reference. In FileSystem, which subclasses AbstractFileSystem, you can overload method createReference(FileObject fo) to achieve another type of Reference (weak, strong etc.)

Overrides:

createReference in class AbstractFileSystem

Parameters:

fo - is FileObject. It`s reference yourequire to get.

Returns:

Reference to FileObject

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