var jsonApplyMetadata = function()

in JSLib/src/odata-json.js [69:127]
47 lines of code
20 McCabe index (conditional complexity)

    var jsonApplyMetadata = function (value, metadata, dateParser, recognizeDates) {
        /// <summary>Applies metadata coming from both the payload and the metadata object to the value.</summary>
        /// <param name="value" type="Object">Data on which the metada is going to be applied.</param>
        /// <param name="metadata">Metadata store; one of edmx, schema, or an array of any of them.</param>
        /// <param name="dateParser" type="function">Function used for parsing datetime values.</param>
        /// <param name="recognizeDates" type="Boolean">
        ///     True if strings formatted as datetime values should be treated as datetime values. False otherwise.
        /// </param>
        /// <returns type="Object">Transformed data.</returns>

        if (value && typeof value === "object") {
            var dataTypeName;
            var valueMetadata = value.__metadata;

            if (valueMetadata) {
                if (valueMetadata.actions) {
                    valueMetadata.actions = jsonReadAdvertisedActionsOrFunctions(valueMetadata.actions);
                }
                if (valueMetadata.functions) {
                    valueMetadata.functions = jsonReadAdvertisedActionsOrFunctions(valueMetadata.functions);
                }
                dataTypeName = valueMetadata && valueMetadata.type;
            }

            var dataType = lookupEntityType(dataTypeName, metadata) || lookupComplexType(dataTypeName, metadata);
            var propertyValue;
            if (dataType) {
                var properties = dataType.property;
                if (properties) {
                    var i, len;
                    for (i = 0, len = properties.length; i < len; i++) {
                        var property = properties[i];
                        var propertyName = property.name;
                        propertyValue = value[propertyName];

                        if (property.type === "Edm.DateTime" || property.type === "Edm.DateTimeOffset") {
                            if (propertyValue) {
                                propertyValue = dateParser(propertyValue);
                                if (!propertyValue) {
                                    throw { message: "Invalid date/time value" };
                                }
                                value[propertyName] = propertyValue;
                            }
                        } else if (property.type === "Edm.Time") {
                            value[propertyName] = parseDuration(propertyValue);
                        }
                    }
                }
            } else if (recognizeDates) {
                for (var name in value) {
                    propertyValue = value[name];
                    if (typeof propertyValue === "string") {
                        value[name] = dateParser(propertyValue) || propertyValue;
                    }
                }
            }
        }
        return value;
    };