FnCollection (BaseX Core 10.6 API)

java.lang.Object
- org.basex.query.expr.ExprInfo
- - org.basex.query.expr.Expr
  - - org.basex.query.expr.ParseExpr
    - - org.basex.query.expr.Arr
      - org.basex.query.func.StandardFunc
        
        org.basex.query.func.fn.DynamicFn
        
        org.basex.query.func.fn.Docs
        
        org.basex.query.func.fn.FnCollection

Direct Known Subclasses:

FnUriCollection
```
public class FnCollection
extends Docs
```
Function implementation.

Author:

BaseX Team 2005-23, BSD License, Christian Gruen

Field Summary
- Fields inherited from class org.basex.query.func.StandardFunc
  definition, sc
- Fields inherited from class org.basex.query.expr.Arr
  exprs
- Fields inherited from class org.basex.query.expr.ParseExpr
  exprType, info

Constructor Summary

Constructors
Constructor Description

FnCollection()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`ddo()`	Indicates if this expression returns items in document order without duplicates.
`Value`	`value(QueryContext qc)`	Evaluates the expression and returns the resulting value.

Methods inherited from class org.basex.query.func.fn.Docs
accept, opt

Methods inherited from class org.basex.query.func.StandardFunc
checkPerm, coerceFunc, compileData, copy, dataLock, defined, description, embed, equals, has, optFirst, optFirst, optimize, serialize, simplifyArgs, toBaseUri, toBindings, toCollation, toCollationOrDefault, toContent, toContent, toData, toDate, toDBNode, toEncodingOrNull, toFunction, toFunction, toIO, toIO, toMs, toName, toNodeOrAtomItem, toOptions, toOptions, toPath, toPath, toStr, toString, toXml, toZeroStr, updating, vacuous

Methods inherited from class org.basex.query.expr.Arr
allAreValues, arg, args, checkUp, compile, copyAll, count, exprSize, flatten, inline, inlineable, mayBePositional, removeEmpty, simplifyAll

Methods inherited from class org.basex.query.expr.ParseExpr
adoptType, atomValue, checkAllUp, checkNoEmpty, checkNoEmpty, checkNoneUp, checkNoUp, checkType, checkType, checkUp, copyType, ctxValue, data, ebv, info, item, iter, refineType, seqType, size, test, toArray, toArray, toAtomItem, toB64, toB64, toB64OrNull, toBin, toBin, toBoolean, toBoolean, toBooleanOrFalse, toBytes, toBytes, toDouble, toDouble, toElem, toElem, toFloat, toFunction, toItem, toItem, toLong, toLong, toMap, toMap, toNode, toNode, toNodeOrNull, toNumber, toNumberOrNull, toQNm, toQNmOrNull, toString, toString, toStringOrNull, toToken, toToken, toTokenOrNull, toZeroToken

Methods inherited from class org.basex.query.expr.Expr
arg, atomItem, atomIter, funcType, hasFreeVars, indexAccessible, isSimple, markTailCalls, mergeEbv, optimizePos, simplify, simplifyFor, typeCheck, uses, visitAll

Methods inherited from class org.basex.query.expr.ExprInfo
toErrorString, toString

Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - FnCollection
```
public FnCollection()
```
- Method Detail
  - value
```
public Value value(QueryContext qc)
            throws QueryException
```
    Description copied from class: Expr
    
    Evaluates the expression and returns the resulting value. If this method is not implemented, Expr.item(QueryContext, InputInfo) must be implemented instead.
    
    Overrides:
    
    value in class ParseExpr
    
    Parameters:
    
    qc - query context
    
    Returns:
    
    value
    
    Throws:
    
    QueryException - query exception
  - ddo
```
public boolean ddo()
```
    Description copied from class: Expr
    
    Indicates if this expression returns items in document order without duplicates.
    
    Overrides:
    
    ddo in class Expr
    
    Returns:
    
    result of check