/// <summary>
/// Bind a parameter alias which is inside another alias value.
/// </summary>
/// <param name="bindingState">The alias name which is inside another alias value.</param>
/// <param name="aliasToken">The cache of alias value nodes</param>
/// <returns>The semantics node tree for alias (the @p1 in "@p1=...", not alias value expression)</returns>
internal ParameterAliasNode BindParameterAlias(BindingState bindingState, FunctionParameterAliasToken aliasToken)
{
ExceptionUtils.CheckArgumentNotNull(bindingState, "bindingState");
ExceptionUtils.CheckArgumentNotNull(aliasToken, "aliasToken");
string alias = aliasToken.Alias;
ParameterAliasValueAccessor aliasValueAccessor = bindingState.Configuration.ParameterAliasValueAccessor;
if (aliasValueAccessor == null)
{
return(new ParameterAliasNode(alias, null));
}
// in cache?
SingleValueNode aliasValueNode = null;
if (!aliasValueAccessor.ParameterAliasValueNodesCached.TryGetValue(alias, out aliasValueNode))
{
// has value expression?
string aliasValueExpression = aliasValueAccessor.GetAliasValueExpression(alias);
if (aliasValueExpression == null)
{
aliasValueAccessor.ParameterAliasValueNodesCached[alias] = null;
}
else
{
aliasValueNode = this.ParseAndBindParameterAliasValueExpression(bindingState, aliasValueExpression, aliasToken.ExpectedParameterType);
aliasValueAccessor.ParameterAliasValueNodesCached[alias] = aliasValueNode;
}
}
return(new ParameterAliasNode(alias, aliasValueNode.GetEdmTypeReference()));
}
/// <summary>
/// Bind path segment's operation or operationImport's parameters.
/// </summary>
/// <param name="configuration">The ODataUriParserConfiguration.</param>
/// <param name="functionOrOpertion">The function or operation.</param>
/// <param name="segmentParameterTokens">The parameter tokens to be binded.</param>
/// <returns>The binded semantic nodes.</returns>
internal static List <OperationSegmentParameter> BindSegmentParameters(ODataUriParserConfiguration configuration, IEdmOperation functionOrOpertion, ICollection <FunctionParameterToken> segmentParameterTokens)
{
// TODO: HandleComplexOrCollectionParameterValueIfExists is temp work around for single copmlex or colleciton type, it can't handle nested complex or collection value.
ICollection <FunctionParameterToken> parametersParsed = FunctionCallBinder.HandleComplexOrCollectionParameterValueIfExists(configuration.Model, functionOrOpertion, segmentParameterTokens, configuration.Resolver.EnableCaseInsensitive, configuration.EnableUriTemplateParsing);
// Bind it to metadata
BindingState state = new BindingState(configuration);
state.ImplicitRangeVariable = null;
state.RangeVariables.Clear();
MetadataBinder binder = new MetadataBinder(state);
List <OperationSegmentParameter> boundParameters = new List <OperationSegmentParameter>();
IDictionary <string, SingleValueNode> input = new Dictionary <string, SingleValueNode>(StringComparer.Ordinal);
foreach (FunctionParameterToken paraToken in parametersParsed)
{
// TODO: considering another better exception
if (paraToken.ValueToken is EndPathToken)
{
throw new ODataException(Strings.MetadataBinder_ParameterNotInScope(
string.Format(CultureInfo.InvariantCulture, "{0}={1}", paraToken.ParameterName, (paraToken.ValueToken as EndPathToken).Identifier)));
}
SingleValueNode boundNode = (SingleValueNode)binder.Bind(paraToken.ValueToken);
if (!input.ContainsKey(paraToken.ParameterName))
{
input.Add(paraToken.ParameterName, boundNode);
}
}
IDictionary <IEdmOperationParameter, SingleValueNode> result = configuration.Resolver.ResolveOperationParameters(functionOrOpertion, input);
foreach (KeyValuePair <IEdmOperationParameter, SingleValueNode> item in result)
{
SingleValueNode boundNode = item.Value;
// ensure node type is compatible with parameter type.
IEdmTypeReference sourceTypeReference = boundNode.GetEdmTypeReference();
bool sourceIsNullOrOpenType = (sourceTypeReference == null);
if (!sourceIsNullOrOpenType)
{
// if the node has been rewritten, no further conversion is needed.
if (!TryRewriteIntegralConstantNode(ref boundNode, item.Key.Type))
{
boundNode = MetadataBindingUtils.ConvertToTypeIfNeeded(boundNode, item.Key.Type);
}
}
OperationSegmentParameter boundParamer = new OperationSegmentParameter(item.Key.Name, boundNode);
boundParameters.Add(boundParamer);
}
return(boundParameters);
}
/// <summary>
/// Bind the expression of the LambdaToken
/// </summary>
/// <param name="queryToken">the expression token</param>
/// <returns>the bound expression node</returns>
private SingleValueNode BindExpressionToken(QueryToken queryToken)
{
SingleValueNode expression = this.bindMethod(queryToken) as SingleValueNode;
if (expression == null)
{
throw new ODataException(ODataErrorStrings.MetadataBinder_AnyAllExpressionNotSingleValue);
}
// type reference is allowed to be null for open properties.
IEdmTypeReference expressionTypeReference = expression.GetEdmTypeReference();
if (expressionTypeReference != null && !expressionTypeReference.AsPrimitive().IsBoolean())
{
throw new ODataException(ODataErrorStrings.MetadataBinder_AnyAllExpressionNotSingleValue);
}
return(expression);
}