 | hxt-7.3: A collection of tools for processing XML with Haskell. | Contents | Index |
| Text.XML.HXT.XPath.XPathEval |
|
Version : $Id: XPathEval.hs,v 1.8 20061012 11:51:29 hxml Exp $
The core functions for evaluating the different types of XPath expressions. Each Expr-constructor is mapped to an evaluation function.
| getXPath :: String -> XmlFilter |
| getXPathWithNsEnv :: NsEnv -> String -> XmlFilter |
| getXPathSubTrees :: String -> XmlFilter |
| getXPathSubTreesWithNsEnv :: NsEnv -> String -> XmlFilter |
| getXPathNodeSet :: String -> XmlTree -> XmlNodeSet |
| getXPathNodeSetWithNsEnv :: NsEnv -> String -> XmlTree -> XmlNodeSet |
| evalExpr :: Env -> Context -> Expr -> XPathFilter |
Select parts of a document by an XPath expression.
The main filter for selecting parts of a document via XPath. The string argument must be a XPath expression with an absolute location path, the argument tree must be a complete document tree. Result is a possibly empty list of XmlTrees forming the set of selected XPath values. XPath values other than XmlTrees (numbers, attributes, tagnames, ...) are convertet to text nodes.
Select parts of a document by a namespace aware XPath expression.
Works like getXPath but the prefix:localpart names in the XPath expression are interpreted with respect to the given namespace environment
Select parts of an XML tree by a XPath expression.
The main filter for selecting parts of an arbitrary XML tree via XPath. The string argument must be a XPath expression with an absolute location path, There are no restrictions on the arument tree.
No canonicalization is performed before evaluating the query
Result is a possibly empty list of XmlTrees forming the set of selected XPath values. XPath values other than XmlTrees (numbers, attributes, tagnames, ...) are convertet to text nodes.