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## org.basex.query.up
Class Replace

    java.lang.Object
      org.basex.query.ExprInfo
          org.basex.query.expr.Expr
              org.basex.query.expr.Arr
                  org.basex.query.up.Update
                      org.basex.query.up.Replace

    public final class Replace

extends Update

Replace expression.

Author:
  Workgroup DBIS, University of Konstanz 2005-10, ISC License, Lukas Kircher

Nested Class Summary

Nested classes/interfaces inherited from class org.basex.query.expr.Expr
`Expr.Use`

Field Summary

Fields inherited from class org.basex.query.expr.Arr
`expr`

Constructor Summary
`Replace(Expr t, Expr r, boolean v)` Constructor.

Method Summary
`Seq` | `atomic(QueryContext ctx)` Evaluates the expression and returns the resulting item or a `null` reference.
`String` | `toString()`

Methods inherited from class org.basex.query.up.Update
`uses`

Methods inherited from class org.basex.query.expr.Arr
`comp, duplicates, indexEquivalent, plan, removable, remove`

Methods inherited from class org.basex.query.expr.Expr
`addText, checkCtx, checkDbl, checkItr, e, ebv, i, indexAccessible, iter, returned, sameAs, size, test, v`

Methods inherited from class org.basex.query.ExprInfo
`color, info, name`

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

### Replace

    public Replace(Expr t,
                   Expr r,
                   boolean v)

  Constructor.

  Parameters:
    `t` - target expression
    `r` - source expression
    `v` - replace value of

Method Detail

### atomic

    public Seq atomic(QueryContext ctx)
               throws QueryException

  Description copied from class: `Expr`
  Evaluates the expression and returns the resulting item or a `null` reference. If this method is not overwritten, `Expr.iter(org.basex.query.QueryContext)` must be implemented.

  Overrides:
    `atomic` in class `Expr`
  Parameters:
    `ctx` - query context
  Returns:
    iterator
  Throws:
    `QueryException` - query exception

### toString

    public String toString()

  Specified by:
    `toString` in class `ExprInfo`

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