/// <summary>
/// Make the Consignments enumerable according to the CREATE section of the doc.
/// Then index the Consignments for each of the relevant sections.
/// Assumption: The CREATE section exists, or we have no Consignments.
/// </summary>
private bool Initialize(IndexBy indexBy)
{
IdPropertyXPath = XPathExpression.Compile("./" + indexBy.ToString() + "/text()");
//determine available sections
hasCreate = doc.NodeExists("/document/CREATE");
hasBook = doc.NodeExists("/document/BOOK");
hasShip = doc.NodeExists("/document/SHIP");
hasPrint = doc.NodeExists("/document/PRINT");
hasError = doc.NodeExists("//ERROR");
hasRuntimeError = doc.NodeExists("/runtime_error");
//prepare iterator and indexes
if (doc.NodeExists("/document"))
{
if (hasCreate)
{
createEnum = doc.GetChildEnumerable(XPathExpression.Compile("/document"), "CREATE");
createIndex = doc.GetChildIndex(XPathExpression.Compile("/document"), "CREATE", IdPropertyXPath);
}
if (hasBook)
{
bookIndex = doc.GetChildIndex(XPathExpression.Compile("/document/BOOK"), "CONSIGNMENT", IdPropertyXPath);
}
if (hasShip)
{
shipIndex = doc.GetChildIndex(XPathExpression.Compile("/document/SHIP"), "CONSIGNMENT", IdPropertyXPath);
}
//...etc
return(true);
}
else
{
return(false); //after all, not worthy of further investigation.
}
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="doc">MyXMLDocument that has a navigator focussed on the node whose children we want to index</param>
/// <param name="multiChildName">Name of a node that may occur multiple times under the given node</param>
public MyXMLChildIndex(MyXMLDocument doc, string multiChildName, XPathExpression propertyXPath)
{
this.index = new Dictionary <string, MyXMLDocument>();
var iter = new MyXMLChildEnumerable(doc, multiChildName);
foreach (MyXMLDocument node in iter)
{
string key = node.nav.SelectSingleNode(propertyXPath).Value;
index.Add(key, node);
}
}
