org.basex.query.up
Class Update
java.lang.Object
org.basex.query.ExprInfo
org.basex.query.expr.Expr
org.basex.query.expr.Arr
org.basex.query.up.Update
- Direct Known Subclasses:
- Delete, Insert, Rename, Replace
public abstract class Update
- extends Arr
Abstract update expression.
- Author:
- Workgroup DBIS, University of Konstanz 2005-10, ISC License, Christian Gruen
Nested classes/interfaces inherited from class org.basex.query.expr.Expr |
Expr.Use |
Fields inherited from class org.basex.query.expr.Arr |
expr |
Methods inherited from class org.basex.query.expr.Expr |
addText, atomic, checkCtx, checkDbl, checkItr, e, ebv, i, indexAccessible, iter, returned, sameAs, size, test, v |
uses
public boolean uses(Expr.Use u,
QueryContext ctx)
- Description copied from class:
Expr
- Indicates if an expression uses the specified type.
Called by the compiler to perform certain optimizations.
true
is returned by default and thus assumed as "worst-case".
- Overrides:
uses
in class Arr
- Parameters:
u
- use type to be checkedctx
- query context
- Returns:
- result of check