op functions (Node Constructor Functions)
The following are constructor functions to construct nodes that can be used as column values in a row or passed to builtin functions.
15 functions
| Function name | Description |
|---|---|
| op:json-array | This function constructs a JSON array during row processing. |
| op:json-boolean | This function constructs a JSON boolean node with the specified value. |
| op:json-document | This function constructs a JSON document with the root content, which must be exactly one JSON object or array node. |
| op:json-null | This function constructs a JSON null node. |
| op:json-number | This function constructs a JSON number node with the specified value. |
| op:json-object | This function constructs a JSON object with the specified properties. |
| op:json-string | This function constructs a JSON text node with the specified value. |
| op:prop | This function specifies the key expression and value content for a JSON property of a JSON object constructed by the op:json-object function. |
| op:xml-attribute | This function constructs an XML attribute with the name (which can be a string or QName) and atomic value. |
| op:xml-comment | This function constructs an XML comment with the atomic value. |
| op:xml-document | This function constructs an XML document with the root content, which must be exactly one node. |
| op:xml-element | This function constructs an XML element with the name (which can be a string or QName), zero or more attributes, and child content. |
| op:xml-pi | This function constructs an XML processing instruction with the atomic value. |
| op:xml-text | This function constructs an XML text node with the specified value. |
| op:xpath | This function extracts a sequence of child nodes from a column with node values -- especially, the document nodes from a document join. |