/// <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));
}
/// <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>
/// 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;
}
