Gadbury wrote:
If I make a change to my CND file, is there a way to update the
registered node types without deleting and rebuilding the entire
repository? I have added a new property to a node type defined in my
CND file but I have useful data within the repository that I do not
wish to lose. Usually I drop my database schemas, remove my
repository and workspaces directories from my repository home
directory, and have jackrabbit rebuild and re-register everything
from my repository.xml and customNodeTypeDefinition.cnd files.
From http://markmail.org/message/d7iujo5nuxfcnrrr:
NodeTypeManagerImpl manager = (NodeTypeManagerImpl)
session.getWorkspace().getNodeTypeManager();
NodeType[] nodeTypes = manager.registerNodeTypes(
in, // input stream for new CND file
NodeTypeManagerImpl.TEXT_X_JCR_CND,
true // reregister existing node types
);
But unless you make very simple changes, like adding an optional
property type, you'll also need to write "migration" code. For example,
to add a mandatory property type, first add it as optional then create
properties in nodes having the relevant node type before replacing the
property type with its mandatory form. Similarly, to remove a mandatory
node/property type you have to first make it optional then delete data
then remove the node/property type.
You will also need to apply the patch below. Support for migrating node
types is currently limited in Jackrabbit to "trivial" changes. If you
apply this patch and reregister node types you risk losing data
integrity so take backups and write migrations carefully. Hopefully
there'll be support for Rails-like migrations in the future; this is
something I may attempt but haven't had the time yet.
Later
Charlie
Index:
jackrabbit-core/src/main/java/org/apache/jackrabbit/core/nodetype/NodeTypeRegistry.java
===================================================================
---
jackrabbit-core/src/main/java/org/apache/jackrabbit/core/nodetype/NodeTypeRegistry.java
(revision 783800)
+++
jackrabbit-core/src/main/java/org/apache/jackrabbit/core/nodetype/NodeTypeRegistry.java
(working copy)
@@ -402,7 +402,7 @@
// the definition has not been modified, there's nothing to
do here...
return getEffectiveNodeType(name);
}
- if (diff.isTrivial()) {
+ //if (diff.isTrivial()) {
/**
* the change is trivial and has no effect on current content
* (e.g. that would be the case when non-mandatory
properties had
@@ -429,15 +429,15 @@
// notify listeners
notifyReRegistered(name);
return entNew;
- }
+ //}
- String message =
- "The following nodetype change contains non-trivial changes."
- + "Up until now only trivial changes are supported."
- + " (see javadoc for "
- + NodeTypeDefDiff.class.getName()
- + "):\n" + diff.toString();
- throw new RepositoryException(message);
+ //String message =
+ // "The following nodetype change contains non-trivial changes."
+ // + "Up until now only trivial changes are supported."
+ // + " (see javadoc for "
+ // + NodeTypeDefDiff.class.getName()
+ // + "):\n" + diff.toString();
+ //throw new RepositoryException(message);
// TODO Implement checkForConflictingContent()
// make sure existing content would not conflict
