当前页面:
在线文档首页 >
NetBeans API Javadoc 5.5.1
EntityCatalog (NetBeans Utilities API) - NetBeans API Javadoc 5.5.1
org.openide.xml
Class EntityCatalog
java.lang.Object
org.openide.xml.EntityCatalog
- All Implemented Interfaces:
- EntityResolver
public abstract class EntityCatalog
- extends Object
- implements EntityResolver
Entity resolver resolving all entities registered by modules.
Use getDefault()
to get the master instance in system. Any parser working with
unknown XML documents should use it to avoid unnecessary Internet
connections.
You can register your own instances via lookup to add to the resolver pool,
for example using an XML file in the format defined by PUBLIC_ID
,
but for reasons of performance and predictability during startup it is best to provide
the entity (e.g. some DTD you define) as the contents of a file in
the system filesystem, in the /xml/entities/ folder, where the file path
beneath this folder is based on the public ID as follows:
- US-ASCII alphanumeric characters and '_' are left as is.
- Spaces and various punctuation are converted to '_' (one per character).
- Initial '-//' is dropped.
- Final '//EN' is dropped.
- Exactly two forward slashes in a row are converted to one.
Thus for example the public ID
-//NetBeans//Entity Mapping Registration 1.0//EN
would be looked for in the file
/xml/entities/NetBeans/Entity_Mapping_Registration_1_0.
Naturally this only works if you are defining a fixed number of entities.
It is recommended that the entity file in /xml/entities/ also be given a file
attribute named hint.originalPublicID
with a string value giving the public ID.
- Since:
- release 3.2
Field Summary |
static String |
PUBLIC_ID
DOCTYPE public ID defining grammar used for entity registrations. |
Method Summary |
static EntityCatalog |
getDefault()
Get a master entity catalog which can delegate to any others that have
been registered via lookup. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
PUBLIC_ID
public static final String PUBLIC_ID
- DOCTYPE public ID defining grammar used for entity registrations.
- See Also:
- Constant Field Values
EntityCatalog
public EntityCatalog()
getDefault
public static EntityCatalog getDefault()
- Get a master entity catalog which can delegate to any others that have
been registered via lookup.