/// <summary>
/// Called when the user accesses a property dynamically (e.g. "xn.Countries")
/// </summary>
/// <returns>Depending on the data, this may return a collection of nodes
/// or a single node or a string value.</returns>
public override bool TryGetMember(GetMemberBinder binder, out object result)
{
result = null;
// First search for nested elements
var elems = container.Elements(nameResolver(binder.Name));
if (elems.Count() == 1)
// Single element - wrap it inside DynamicXml
result = new DynamicXml(elems.First(), ns, camelCase);
else if (elems.Count() != 0)
{
// Multiple elements - wrapp all inside DynamicXml & return sequecne
result = elems.Select(e => new DynamicXml(e, ns, camelCase));
}
else
{
// No sub-element found. If the current node is Element, try attributes
var element = container as XElement;
if (element != null)
result = element.Attributes(nameResolver(binder.Name)).FirstOrDefault();
// Special name 'Value' can be used to get the inner text.
if (binder.Name == "Value") result = element.Value;
}
return result != null;
}
/// <summary>
/// Called when the user accesses a property dynamically (e.g. "xn.Countries")
/// </summary>
/// <returns>Depending on the data, this may return a collection of nodes
/// or a single node or a string value.</returns>
public override bool TryGetMember(GetMemberBinder binder, out object result)
{
result = null;
// First search for nested elements
var elems = container.Elements(nameResolver(binder.Name));
if (elems.Count() == 1)
{
// Single element - wrap it inside DynamicXml
result = new DynamicXml(elems.First(), ns, camelCase);
}
else if (elems.Count() != 0)
{
// Multiple elements - wrapp all inside DynamicXml & return sequecne
result = elems.Select(e => new DynamicXml(e, ns, camelCase));
}
else
{
// No sub-element found. If the current node is Element, try attributes
var element = container as XElement;
if (element != null)
{
result = element.Attributes(nameResolver(binder.Name)).FirstOrDefault();
}
// Special name 'Value' can be used to get the inner text.
if (binder.Name == "Value")
{
result = element.Value;
}
}
return(result != null);
}
/// <summary>
/// Called when the C# code using 'dynamic' uses "wb.Foo(...)". The method
/// treats this as a call to the "foo" service provided by WorldBank. The
/// method takes an anonymous type as an argument, so it is possible to
/// specify any additional parameters dynamically.
/// </summary>
/// <example><code>
/// dynamic wb = new DynamicWorldBank();
/// dynamic regions = wb.Region(new { PerPage = 100 });
/// </code></example>
/// <returns>
/// Returns an instance of 'DynamicXml' type that can be used for easy
/// access to XML documents using C# 4 'dynamic' keyword.
/// </returns>
public override bool TryInvokeMember(InvokeMemberBinder binder, object[] args, out object result)
{
// Create URL for the request
string url = "http://api.worldbank.org/" + new String(NormalizeName(binder.Name).ToArray());
if (args.Length == 1)
{
// If there is some anonymous type as argument, get its properties
// and append them as arguments to the URL
var separator = "?";
foreach (var prop in args[0].GetType().GetProperties())
{
url = url + separator +
new String(NormalizeName(prop.Name).ToArray()) + "=" +
prop.GetValue(args[0], new object[] { }).ToString();
separator = "&";
}
}
// Perform HTTP request & return result as DynamicXml
result = new DynamicXml(url, CamelCase: true, Namespace: "http://www.worldbank.org");
return true;
}
/// <summary>
/// Called when the C# code using 'dynamic' uses "wb.Foo(...)". The method
/// treats this as a call to the "foo" service provided by WorldBank. The
/// method takes an anonymous type as an argument, so it is possible to
/// specify any additional parameters dynamically.
/// </summary>
/// <example><code>
/// dynamic wb = new DynamicWorldBank();
/// dynamic regions = wb.Region(new { PerPage = 100 });
/// </code></example>
/// <returns>
/// Returns an instance of 'DynamicXml' type that can be used for easy
/// access to XML documents using C# 4 'dynamic' keyword.
/// </returns>
public override bool TryInvokeMember(InvokeMemberBinder binder, object[] args, out object result)
{
// Create URL for the request
string url = "http://api.worldbank.org/" + new String(NormalizeName(binder.Name).ToArray());
if (args.Length == 1)
{
// If there is some anonymous type as argument, get its properties
// and append them as arguments to the URL
var separator = "?";
foreach (var prop in args[0].GetType().GetProperties())
{
url = url + separator +
new String(NormalizeName(prop.Name).ToArray()) + "=" +
prop.GetValue(args[0], new object[] { }).ToString();
separator = "&";
}
}
// Perform HTTP request & return result as DynamicXml
result = new DynamicXml(url, CamelCase: true, Namespace: "http://www.worldbank.org");
return(true);
}
