Package org.openide.loaders

DataSystems are the logical layer between a filesystem and the regular functions of the IDE.

See:
Description

Interface Summary

DataFilter	Allows certain data objects to be excluded from being displayed.
DataLoader.RecognizedFiles	Buffer holding a list of primary and secondary files marked as already recognized, to prevent further scanning.
DataObject.Container	Interface for objects that can contain other data objects.
Environment.Provider	Cookie for objects that plan to provide environment.
OperationListener	Listener to operations on data objects.
TemplateWizard.Iterator	The interface for custom iterator.
XMLDataObject.Processor	Deprecated. use lookup

Class Summary

CompilerSupport	Support for compilation of data objects.
CompilerSupport.Build	Build cookie support.
CompilerSupport.Clean	Clean cookie support.
CompilerSupport.Compile	Compile cookie support.
ConnectionSupport	Support implementing ConnectionCookie, that stores listeners in extended attributes of associated entry.
DataFolder	A folder containing data objects.
DataFolder.Index	Support for index cookie for folder nodes.
DataFolder.SortMode	Type-safe enumeration of sort modes for data folders.
DataLoader	A data loader recognizes FileObjects and creates appropriate DataObjects to represent them.
DataLoaderPool	Pool of data loaders.
DataNode	Standard node representing a data object.
DataObject	Object that represents one JavaBean in the tree of beans representing data systems.
DataObject.Registry	Registry of modified data objects.
DataObjectFilter	Supports working with a set of filters defined by data objects.
DataShadow	Default implementation of a shortcut to another data object.
DataShadow.ShadowNode	Node for a shadow object.
Environment	Utilities that define the "settings hierarchy".
ExecSupport	Support for execution of a class file.
ExtensionList	Property class that collects a modifiable list of file extensions and permits checking of whether a name or a file object has a given extension.
ExtensionListEditor	Deprecated. Should not be used directly (property editor search path will find it).
FileEntry	Entry that works with plain files.
FileEntry.Folder	Simple entry for handling folders, on copy, move and createFromTemplate it creates new empty folder and copies attributes of source folder.
FileEntry.Format	Specialized entry that simplifies substitution when a file entry is created from template.
FileEntry.Numb	Simple file entry variant.
FolderInstance	Support class for creation of an object from the content of a DataObject.Container.
FolderLookup	Implements a lookup, that scans a content of a folder for its data objects and asks them for instance cookie, the created objects are then used to for the content of the lookup.
InstanceDataObject	A data object whose only purpose is to supply InstanceCookie.
InstanceSupport	An instance cookie implementation that works with files or entries.
InstanceSupport.Instance	Trivial supporting instance cookie for already-existing objects.
InstanceSupport.Origin	Enhanced instance cookie support that also knows the file it has been created from and can be serialized back to.
LoaderTransfer	Class that contains specific datatransfer flavors and methods to work with transfered DataObjects.
MultiDataObject	Provides support for handling of data objects with multiple files.
MultiFileLoader	Loader for any kind of MultiDataObject.
OpenSupport	Simple support for an openable file.
OpenSupport.Env	Environment that connects the support together with DataObject.
OperationAdapter	Adapter for methods of OperationListener.
OperationEvent	Event that describes operations taken on a data object.
OperationEvent.Copy	Notification of a copy action of a data object, creation of a shadow, or creation from a template.
OperationEvent.Move	Notification of a move of a data object.
OperationEvent.Rename	Notification of a rename of a data object.
TemplateWizard	Wizard for creation of new objects from a template.
UniFileLoader	Support class for loader handling one file at a time.
XMLDataObject	Object that provides main functionality for xml documents.
XMLDataObject.Info	Deprecated. use Lookup Representation of xmlinfo file holding container of Processors.

Exception Summary

DataObjectExistsException	Exception signalling that the data object for this file cannot be created because there already is an object for the primary file.
DataObjectNotFoundException	Exception signalling that the data object for a given file object could not be found in DataObject.find(org.openide.filesystems.FileObject).

Package org.openide.loaders Description

DataSystems are the logical layer between a filesystem and the regular functions of the IDE.

The DataSystems API provides a higher-level view of files in terms of useful data - data which has specific types, actions that can be performed on these types, and relationships to other files. For example, the IDE might find these files in a newly-opened directory:

• myform.form
• myform.java
• myform.class
• myform$1.class
• myform$2.class

Logically, all of these files are interlinked, and it is the job of a data loader to associate them. In this case, a loader installed by the Form Editor into the system's loader pool would recognize the common basename of the files, and produce a special data object which encapsulates that there is a Java source with an accompanying form and compiled class files. This data object would then provide operations appropriate to a form on disk, and assist in creating an Explorer node subtree for it.