Esempio n. 1
0
        /// <summary>
        /// Translates resource bound expression tree to a URI.
        /// </summary>
        /// <param name='context'>Data context used to generate type names for types.</param>
        /// <param name="addTrailingParens">flag to indicate whether generated URI should include () if leaf is ResourceSet</param>
        /// <param name="e">The expression to translate</param>
        /// <param name="uri">uri</param>
        /// <param name="version">version for query</param>
        internal static void Translate(DataServiceContext context, bool addTrailingParens, Expression e, out Uri uri, out Version version)
        {
            var writer = new UriWriter(context);

            writer.Visit(e);
            string fullUri = writer.uriBuilder.ToString();

            if (writer.alias.Any())
            {
                if (fullUri.IndexOf(UriHelper.QUESTIONMARK) > -1)
                {
                    fullUri += UriHelper.AMPERSAND;
                }
                else
                {
                    fullUri += UriHelper.QUESTIONMARK;
                }

                foreach (var kv in writer.alias)
                {
                    fullUri += kv.Key;
                    fullUri += UriHelper.EQUALSSIGN;
                    fullUri += kv.Value;
                    fullUri += UriHelper.AMPERSAND;
                }

                fullUri = fullUri.Substring(0, fullUri.Length - 1);
            }


            uri     = UriUtil.CreateUri(fullUri, UriKind.Absolute);
            version = writer.uriVersion;
        }
        /// <summary>Builds the Uri for the expression passed in.</summary>
        /// <param name="e">The expression to translate into a Uri</param>
        /// <returns>Query components</returns>
        internal QueryComponents Translate(Expression e)
        {
            Uri     uri;
            Version version;
            bool    addTrailingParens = false;
            Dictionary <Expression, Expression> normalizerRewrites = null;

            // short cut analysis if just a resource set or singleton resource.
            // note - to be backwards compatible with V1, will only append trailing () for queries
            // that include more then just a resource set.
            if (!(e is QueryableResourceExpression))
            {
                normalizerRewrites = new Dictionary <Expression, Expression>(ReferenceEqualityComparer <Expression> .Instance);
                e = Evaluator.PartialEval(e);
                e = ExpressionNormalizer.Normalize(e, normalizerRewrites);
                e = ResourceBinder.Bind(e, this.Context);
                addTrailingParens = true;
            }

            UriWriter.Translate(this.Context, addTrailingParens, e, out uri, out version);
            ResourceExpression re            = e as ResourceExpression;
            Type             lastSegmentType = re.Projection == null ? re.ResourceType : re.Projection.Selector.Parameters[0].Type;
            LambdaExpression selector        = re.Projection == null ? null : re.Projection.Selector;

            return(new QueryComponents(uri, version, lastSegmentType, selector, normalizerRewrites));
        }
Esempio n. 3
0
        /// <summary>
        /// Translates resource bound expression tree to a URI.
        /// </summary>
        /// <param name='context'>Data context used to generate type names for types.</param>
        /// <param name="addTrailingParens">flag to indicate whether generated URI should include () if leaf is ResourceSet</param>
        /// <param name="e">The expression to translate</param>
        /// <param name="uri">uri</param>
        /// <param name="version">version for query</param>    
        internal static void Translate(DataServiceContext context, bool addTrailingParens, Expression e, out Uri uri, out Version version)
        {
            var writer = new UriWriter(context);
            writer.Visit(e);
            string fullUri = writer.uriBuilder.ToString();

            if (writer.alias.Any())
            {
                if (fullUri.IndexOf(UriHelper.QUESTIONMARK) > -1)
                {
                    fullUri += UriHelper.AMPERSAND;
                }
                else
                {
                    fullUri += UriHelper.QUESTIONMARK;
                }

                foreach (var kv in writer.alias)
                {
                    fullUri += kv.Key;
                    fullUri += UriHelper.EQUALSSIGN;
                    fullUri += kv.Value;
                    fullUri += UriHelper.AMPERSAND;
                }

                fullUri = fullUri.Substring(0, fullUri.Length - 1);
            }
            

            uri = UriUtil.CreateUri(fullUri, UriKind.Absolute);
            version = writer.uriVersion;
        }
Esempio n. 4
0
 /// <summary>
 /// Translates resource bound expression tree to a URI.
 /// </summary>
 /// <param name='context'>Data context used to generate type names for types.</param>
 /// <param name="addTrailingParens">flag to indicate whether generated URI should include () if leaf is ResourceSet</param>
 /// <param name="e">The expression to translate</param>
 /// <param name="uri">uri</param>
 /// <param name="version">version for query</param>    
 internal static void Translate(DataServiceContext context, bool addTrailingParens, Expression e, out Uri uri, out Version version)
 {
     var writer = new UriWriter(context);
     writer.leafResource = addTrailingParens ? (e as QueryableResourceExpression) : null;
     writer.Visit(e);
     uri = UriUtil.CreateUri(writer.uriBuilder.ToString(), UriKind.Absolute);
     version = writer.uriVersion;
 }