UriTemplateQueryValue.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / NetFx35 / System.ServiceModel.Web / System / UriTemplateQueryValue.cs / 2 / UriTemplateQueryValue.cs
                        

                        
                            //---------------------------------------------------------------- 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//---------------------------------------------------------------

namespace System 
{
    using System.Collections.Specialized; 
    using System.ServiceModel; 
    using System.ServiceModel.Web;
    using System.Text; 
    using System.Web;
    using System.ServiceModel.Channels;

    // This represents a Query value, which can either be Empty, a Literal or a Variable 
    abstract class UriTemplateQueryValue
    { 
 
        readonly UriTemplatePartType nature;
        static UriTemplateQueryValue empty = new EmptyUriTemplateQueryValue(); 

        protected UriTemplateQueryValue(UriTemplatePartType nature)
        {
            this.nature = nature; 
        }
 
        public static UriTemplateQueryValue Empty 
        {
            get 
            {
                return UriTemplateQueryValue.empty;
            }
        } 

        public UriTemplatePartType Nature 
        { 
            get
            { 
                return this.nature;
            }
        }
        public static UriTemplateQueryValue CreateFromUriTemplate(string value, UriTemplate template) 
        {
            // Checking for empty value 
            if (value == null) 
            {
                return UriTemplateQueryValue.Empty; 
            }
            // Identifying the type of value - Literal|Compound|Variable
            switch (UriTemplateHelpers.IdentifyPartType(value))
            { 
                case UriTemplatePartType.Literal:
                    return UriTemplateLiteralQueryValue.CreateFromUriTemplate(value); 
 
                case UriTemplatePartType.Compound:
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR2.GetString( 
                        SR2.UTQueryCannotHaveCompoundValue, template.originalTemplate)));

                case UriTemplatePartType.Variable:
                    return new UriTemplateVariableQueryValue(template.AddQueryVariable(value.Substring(1, value.Length - 2))); 

                default: 
                    Fx.Assert("Invalid value from IdentifyStringNature"); 
                    return null;
            } 
        }

        public static bool IsNullOrEmpty(UriTemplateQueryValue utqv)
        { 
            if (utqv == null)
            { 
                return true; 
            }
            if (utqv == UriTemplateQueryValue.Empty) 
            {
                return true;
            }
            return false; 
        }
        public abstract void Bind(string keyName, string[] values, ref int valueIndex, StringBuilder query); 
 
        public abstract bool IsEquivalentTo(UriTemplateQueryValue other);
        public abstract void Lookup(string value, NameValueCollection boundParameters); 

        class EmptyUriTemplateQueryValue : UriTemplateQueryValue
        {
            public EmptyUriTemplateQueryValue() 
                : base(UriTemplatePartType.Literal)
            { 
            } 
            public override void Bind(string keyName, string[] values, ref int valueIndex, StringBuilder query)
            { 
                query.AppendFormat("&{0}", UrlUtility.UrlEncode(keyName, Encoding.UTF8));
            }

            public override bool IsEquivalentTo(UriTemplateQueryValue other) 
            {
                return (other == UriTemplateQueryValue.Empty); 
            } 
            public override void Lookup(string value, NameValueCollection boundParameters)
            { 
                Fx.Assert(string.IsNullOrEmpty(value), "shouldn't have a value");
            }
        }
    } 

} 

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

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