MarkLogic 12 EA 1 Product Documentationfn functions (Sequence)
26 functions
| Function name | Description |
|---|---|
| fn.avg | Returns the average of the values in the input sequence $arg, that is, the sum of the values divided by the number of values. |
| fn.boolean | Computes the effective boolean value of the sequence $arg. |
| fn.collection | Returns all of the documents that belong to the specified collection(s). |
| fn.count | Returns the number of items in the value of $arg. |
| fn.deepEqual | This function assesses whether two sequences are deep-equal to each other. |
| fn.distinctValues | Returns the sequence that results from removing from $arg all but one of a set of values that are eq to one other. |
| fn.doc | Returns the document(s) stored in the database at the specified URI(s). |
| fn.docAvailable | If fn:doc($uri) returns a document node, this function returns true. |
| fn.empty | If the value of $arg is the empty sequence, the function returns true; otherwise, the function returns false. |
| fn.exactlyOne | Returns $arg if it contains exactly one item. |
| fn.exists | If the value of $arg is not the empty sequence, the function returns true; otherwise, the function returns false. |
| fn.head | Returns the first item in a sequence. |
| fn.id | Returns the sequence of element nodes that have an ID value matching the value of one or more of the IDREF values supplied in $arg. |
| fn.idref | Returns the sequence of element or attribute nodes that have an IDREF value matching the value of one or more of the ID values supplied in $arg. |
| fn.indexOf | Returns a sequence of positive integers giving the positions within the sequence $seqParam of items that are equal to $srchParam. |
| fn.insertBefore | Returns a new sequence constructed from the value of $target with the value of $inserts inserted at the position specified by the value of $position. |
| fn.max | Selects an item from the input sequence $arg whose value is greater than or equal to the value of every other item in the input sequence. |
| fn.min | Selects an item from the input sequence $arg whose value is less than or equal to the value of every other item in the input sequence. |
| fn.oneOrMore | Returns $arg if it contains one or more items. |
| fn.remove | Returns a new sequence constructed from the value of $target with the item at the position specified by the value of $position removed. |
| fn.reverse | Reverses the order of items in a sequence. |
| fn.subsequence | Returns the contiguous sequence of items in the value of $sourceSeq beginning at the position indicated by the value of $startingLoc and continuing for the number of items indicated by the value of $length. |
| fn.sum | Returns a value obtained by adding together the values in $arg. |
| fn.tail | Returns all but the first item in a sequence. |
| fn.unordered | Returns the items of $sourceSeq in an implementation dependent order. |
| fn.zeroOrOne | Returns $arg if it contains zero or one items. |