XML Schema API: Make it easier for application to persist instances of ItemPSVI
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Key: XERCESJ-1494
URL: https://issues.apache.org/jira/browse/XERCESJ-1494
Project: Xerces2-J
Issue Type: Improvement
Components: XML Schema API
Affects Versions: 2.11.0
Reporter: Michael Glavassevich
Priority: Minor
When an application receives instances of ItemPSVI (i.e. ElementPSVI /
AttributePSVI) the scope in which they can call methods on these objects is
often limited (see PSVIProvider) to start and end element callbacks. If an
application wishes to persist the data held by an ItemPSVI beyond this scope it
needs to make a copy. To make it easier for users to copy these objects and
determine when they need to make a copy I plan on adding the following methods
to ItemPSVI:
/**
* Returns a reference to an immutable instance with the same data
* that this instance of <code>ItemPSVI</code> currently has.
*/
public ItemPSVI constant();
/**
* Returns <code>true</code> if this specific instance of
* <code>ItemPSVI</code> is immutable, otherwise <code>false</code>.
*/
public boolean isConstant();
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