XPathExpr.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Xml / System / Xml / XPath / XPathExpr.cs / 1 / XPathExpr.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
//-----------------------------------------------------------------------------
 
namespace System.Xml.XPath { 

    using System; 
    using System.Xml;
    using System.Collections;
    using MS.Internal.Xml.XPath;
 
    public enum XmlSortOrder {
        Ascending       = 1, 
        Descending      = 2, 
    }
 
    public enum XmlCaseOrder {
        None            = 0,
        UpperFirst      = 1,
        LowerFirst      = 2, 
    }
 
    public enum XmlDataType { 
        Text            = 1,
        Number          = 2, 
    }

    public enum XPathResultType {
        Number         = 0 , 
        String          = 1,
        Boolean         = 2, 
        NodeSet        = 3, 
        Navigator       = XPathResultType.String,
        Any            = 5, 
        Error
    };

    public abstract class XPathExpression { 
        internal XPathExpression(){}
 
        public  abstract string Expression { get; } 

        public abstract void AddSort(object expr, IComparer comparer); 

        public abstract void AddSort(object expr, XmlSortOrder order, XmlCaseOrder caseOrder, string lang, XmlDataType dataType);

        public abstract XPathExpression Clone(); 

        public abstract void SetContext(XmlNamespaceManager nsManager); 
 
        public abstract void SetContext(IXmlNamespaceResolver nsResolver);
 
        public abstract XPathResultType ReturnType { get; }

        public static XPathExpression Compile(string xpath) {
            return Compile(xpath, /*nsResolver:*/null); 
        }
 
        public static XPathExpression Compile(string xpath, IXmlNamespaceResolver nsResolver) { 
            bool hasPrefix;
            Query query = new QueryBuilder().Build(xpath, out hasPrefix); 
            CompiledXpathExpr expr = new CompiledXpathExpr(query, xpath, hasPrefix);
            if (null != nsResolver) {
                XmlNamespaceManager mngr = XPathNavigator.GetNamespaces(nsResolver);
                expr.SetContext(mngr); 
            }
            return expr; 
        } 

        private void PrintQuery(XmlWriter w) { 
            ((CompiledXpathExpr)this).QueryTree.PrintQuery(w);
        }
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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