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## org.basex.query.func
Class FNSeq

    java.lang.Object
      org.basex.query.ExprInfo
          org.basex.query.expr.Expr
              org.basex.query.expr.Arr
                  org.basex.query.func.Fun
                      org.basex.query.func.FNSeq

    public final class FNSeq

extends Fun

Sequence functions.

Author:
  Workgroup DBIS, University of Konstanz 2005-09, ISC License, Christian Gruen

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.func.Fun
`func`

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

Constructor Summary
`FNSeq()`

Method Summary
`Item` | `atomic(QueryContext ctx)` Evaluates the expression and returns the resulting item or a `null` reference.
`static boolean` | `deep(Iter iter1, Iter iter2)` Checks items for deep equality.
`Iter` | `iter(QueryContext ctx)` Evaluates the expression and returns an iterator on the resulting items.

Methods inherited from class org.basex.query.func.Fun
`c, comp, info, plan, returned, toString`

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

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

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

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

Constructor Detail

### FNSeq

    public FNSeq()

Method Detail

### iter

    public Iter iter(QueryContext ctx)
              throws QueryException

  Description copied from class: `Expr`
  Evaluates the expression and returns an iterator on the resulting items. If this method is not overwritten, `Expr.atomic(org.basex.query.QueryContext)` must be implemented.

  Overrides:
    `iter` in class `Expr`
  Parameters:
    `ctx` - query context
  Returns:
    resulting item
  Throws:
    `QueryException` - query exception

### atomic

    public Item 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

### deep

    public static boolean deep(Iter iter1,
                               Iter iter2)
                        throws QueryException

  Checks items for deep equality.

  Parameters:
    `iter1` - first iterator
    `iter2` - second iterator
  Returns:
    result of check
  Throws:
    `QueryException` - query exception

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