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## Package com.saxonica.update

This package contains classes used to support XQuery Update.

See:
Description

Class Summary
BasicUpdatingExpression | A basic updating expression: insert, replace, delete, rename (but not copy)
CopyModifyExpression | A copy-modify expression (called a "transform" expression in the XQuery Update specification)
DeleteAction | A pending update action representing the effect of a delete expression
DeleteExpression | A delete expression in XQuery Update
InsertAction | A pending update action representing the effect of an insert expression
InsertAttributeAction | A pending update action representing the insert attribute action.
InsertExpression | An insert expression in XQuery Update
PendingUpdateAction | A pending update action, such as is found on a pending update list
PendingUpdateListImpl | Concrete implementation of the Pending Update List
PutAction | A saved put() call on the pending update list.
RenameAction | A pending update action representing the effect of a rename expression
RenameExpression | A rename expression in XQuery Update
ReplaceAttributeAction | A pending update action representing a replace node expression applied to an attribute.
ReplaceNodeAction | A pending update action representing the effect of a "replace node" expression
ReplaceNodeExpression | A "replace node" expression in XQuery Update
ReplaceValueAction | A pending update action representing the effect of a "replace value" expression.
ReplaceValueExpression | A "replace value of" expression in XQuery Update
UpdateParser | Parser for the XQuery Update extensions

## Package com.saxonica.update Description

This package contains classes used to support XQuery Update. This includes both compile-time classes and run-time support.

None of these classes will be used directly by typical user applications.

The `UpdateParser` is a subclass of `QueryParser`, and contains the additional code needed to parse the Update extensions to the XQuery grammar.

Classes such as `InsertExpression`, `DeleteExpression` , `RenameExpression` represent updating expressions on the expression tree.

The class `PendingUpdateListImpl` represents the run-time pending update list, and the classes `InsertAction`, `DeleteAction`, `RenameAction` and so on are entries on this list.

Michael H. Kay
Saxonica Limited
30 July 2010

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Copyright (c) 2004-2010 Saxonica Limited. All rights reserved.