org.basex.query.gflwor
Class OrderBy.Key
java.lang.Object
org.basex.data.ExprInfo
org.basex.query.expr.Expr
org.basex.query.expr.ParseExpr
org.basex.query.expr.Single
org.basex.query.gflwor.OrderBy.Key
- Enclosing class:
- OrderBy
public static class OrderBy.Key
- extends Single
Sort key.
- Author:
- BaseX Team 2005-12, BSD License, Leo Woerteler
Nested classes/interfaces inherited from class org.basex.query.expr.Expr |
Expr.Flag |
Fields inherited from class org.basex.query.expr.Single |
expr |
Methods inherited from class org.basex.query.expr.ParseExpr |
checkAdmin, checkAllUp, checkBinary, checkBln, checkColl, checkCreate, checkCtx, checkDbl, checkDBNode, checkEStr, checkEStr, checkFunc, checkItem, checkItr, checkItr, checkMap, checkNode, checkNode, checkNode, checkNoEmpty, checkNoneUp, checkNoUp, checkQNm, checkStr, checkStr, checkStrBin, checkType, checkWrite, compBln, copyType, ebv, item, iter, optPre, preEval, size, test, type, value |
Methods inherited from class org.basex.query.expr.Expr |
addText, compEbv, copy, hasFreeVars, indexAccessible, indexEquivalent, inlineAll, isEmpty, isFunction, isItem, isVacuous, isValue, iterable, markTailCalls, optimize, sameAs, uses, visitAll |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
OrderBy.Key
public OrderBy.Key(InputInfo ii,
Expr k,
boolean dsc,
boolean lst,
Collation cl)
- Constructor.
- Parameters:
ii
- input infok
- sort key expressiondsc
- descending orderlst
- empty leastcl
- collation
copy
public OrderBy.Key copy(QueryContext ctx,
VarScope scp,
IntObjMap<Var> vs)
- Description copied from class:
Expr
- Copies an expression.
Will be useful for inlining functions, or for copying static queries.
- Specified by:
copy
in class Expr
- Parameters:
ctx
- query contextscp
- variable scope for creating new variablesvs
- mapping from old variable IDs to new variable copies
- Returns:
- copied expression
plan
public void plan(FElem plan)
- Description copied from class:
ExprInfo
- Creates an expression tree.
- Overrides:
plan
in class Single
- Parameters:
plan
- root element
toString
public java.lang.String toString()
- Specified by:
toString
in class ExprInfo
exprSize
public int exprSize()
- Description copied from class:
Expr
- Counts the number of expressions in this expression's sub-tree.
- Overrides:
exprSize
in class Single
- Returns:
- number of expressions