public string ToJson()
{
ControllerConfiguration config = this.Virtualize(this.ControllerName);
Complete();
XPathNodeIterator ruleIterator = config.Select("/c:dataController/c:businessRules/c:rule");
bool newOnServer = false;
bool calculateOnServer = false;
while (ruleIterator.MoveNext())
{
string type = ruleIterator.Current.GetAttribute("type", String.Empty);
string commandName = ruleIterator.Current.GetAttribute("commandName", String.Empty);
if (type != "JavaScript")
{
if ((commandName == "New") && !(newOnServer))
{
newOnServer = true;
config.SelectSingleNode("/c:dataController").CreateAttribute(String.Empty, "newOnServer", null, "true");
}
else
if ((commandName == "Calculate") && !(calculateOnServer))
{
calculateOnServer = true;
config.SelectSingleNode("/c:dataController").CreateAttribute(String.Empty, "calculateOnServer", null, "true");
}
}
}
string expressions = JArray.FromObject(this.Expressions).ToString();
string[] exceptions = new string[] {
"//comment()",
"c:dataController/c:commands",
"c:dataController/@handler",
"//c:field/c:formula",
"//c:businessRules/c:rule[@type=\"Code\" or @type=\"Sql\" or @type=\"Email\"]",
"//c:businessRules/c:rule/text()",
"//c:validate",
"//c:styles",
"//c:visibility",
"//c:readOnly",
"//c:expression"
};
foreach (string ex in exceptions)
{
List <XPathNavigator> toDelete = new List <XPathNavigator>();
XPathNodeIterator iterator = config.Select(ex);
while (iterator.MoveNext())
{
toDelete.Add(iterator.Current.Clone());
}
foreach (XPathNavigator node in toDelete)
{
node.DeleteSelf();
}
}
// special case of items/item serialization
XPathNodeIterator itemsIterator = config.Select("//c:items[c:item]");
while (itemsIterator.MoveNext())
{
StringBuilder lovBuilder = new StringBuilder("<list>");
XPathNodeIterator itemIterator = itemsIterator.Current.SelectChildren(XPathNodeType.Element);
while (itemIterator.MoveNext())
{
lovBuilder.Append(itemIterator.Current.OuterXml);
}
lovBuilder.Append("</list>");
itemsIterator.Current.InnerXml = lovBuilder.ToString();
}
// load custom view layouts
XPathNodeIterator viewIterator = config.Select("//c:views/c:view");
while (viewIterator.MoveNext())
{
string layout = LoadLayout(viewIterator.Current.GetAttribute("id", String.Empty));
if (!(String.IsNullOrEmpty(layout)))
{
viewIterator.Current.AppendChild(String.Format("<layout><![CDATA[{0}]]></layout>", layout));
}
}
// extend JSON with "expressions"
string json = XmlConverter.ToJson(config.Navigator, "dataController", true, "commands", "output", "fields", "views", "categories", "dataFields", "actions", "actionGroup", "businessRules", "list");
Match eof = Regex.Match(json, "\\}\\s*\\}\\s*$");
json = (json.Substring(0, eof.Index)
+ (",\"expressions\":"
+ (expressions + eof.Value)));
return(json);
}
protected virtual void ProcessArguments(ControllerConfiguration config, ActionArgs args)
{
if (args.Values == null)
{
return;
}
FieldValueDictionary values = new FieldValueDictionary(args);
_pk = null;
// detect negative primary keys
XPathNavigator pkNav = config.SelectSingleNode("/c:dataController/c:fields/c:field[@isPrimaryKey=\'true\']");
if (pkNav != null)
{
FieldValue fv = null;
if (values.TryGetValue(pkNav.GetAttribute("name", String.Empty), out fv))
{
int value = 0;
if ((fv.NewValue != null) && int.TryParse(Convert.ToString(fv.NewValue), out value))
{
if (value < 0)
{
if (args.CommandName == "Insert")
{
// request a new row from business rules
PageRequest newRowRequest = new PageRequest();
newRowRequest.Controller = args.Controller;
newRowRequest.View = args.View;
newRowRequest.Inserting = true;
newRowRequest.RequiresMetaData = true;
newRowRequest.MetadataFilter = new string[] {
"fields"
};
ViewPage page = ControllerFactory.CreateDataController().GetPage(newRowRequest.Controller, newRowRequest.View, newRowRequest);
if (page.NewRow != null)
{
for (int i = 0; (i < page.NewRow.Length); i++)
{
object newValue = page.NewRow[i];
if (newValue != null)
{
DataField field = page.Fields[i];
if (field.IsPrimaryKey)
{
// resolve the value of the primary key
ResolvePrimaryKey(args.Controller, fv.Name, value, newValue);
value = 0;
fv.NewValue = newValue;
}
else
{
// inject a missing default value in the arguments
FieldValue newFieldValue = null;
if (values.TryGetValue(field.Name, out newFieldValue))
{
if (!(newFieldValue.Modified))
{
newFieldValue.NewValue = newValue;
newFieldValue.Modified = true;
}
}
else
{
List <FieldValue> newValues = new List <FieldValue>(args.Values);
newFieldValue = new FieldValue(field.Name, newValue);
newValues.Add(newFieldValue);
args.Values = newValues.ToArray();
values[field.Name] = newFieldValue;
}
}
}
}
}
}
// resolve the primary key after the command execution
if (value < 0)
{
_pk = new FieldValue(fv.Name, value);
fv.NewValue = null;
fv.Modified = false;
}
}
}
}
}
// resolve negative foreign keys
if (_resolvedKeys.Count > 0)
{
XPathNodeIterator fkIterator = config.Select("/c:dataController/c:fields/c:field[c:items/@dataController]");
while (fkIterator.MoveNext())
{
FieldValue fv = null;
if (values.TryGetValue(fkIterator.Current.GetAttribute("name", String.Empty), out fv))
{
XPathNavigator itemsDataControllerNav = fkIterator.Current.SelectSingleNode("c:items/@dataController", config.Resolver);
object resolvedKey = null;
if (_resolvedKeys.TryGetValue(String.Format("{0}${1}", itemsDataControllerNav.Value, fv.NewValue), out resolvedKey))
{
fv.NewValue = resolvedKey;
}
}
}
}
}
public virtual ControllerConfiguration EnsureVitalElements()
{
// verify that the data controller has views and actions
XPathNavigator root = SelectSingleNode("/c:dataController[c:views/c:view and c:actions/c:actionGroup]");
if (root != null)
{
return(this);
}
// add missing configuration elements
XmlDocument doc = new XmlDocument();
doc.LoadXml(_navigator.OuterXml);
ControllerConfiguration config = new ControllerConfiguration(doc.CreateNavigator());
XPathNavigator fieldsNode = config.SelectSingleNode("/c:dataController/c:fields[not(c:field[@isPrimaryKey=\'true\'])]");
if (fieldsNode != null)
{
fieldsNode.AppendChild("<field name=\"PrimaryKey\" type=\"Int32\" isPrimaryKey=\"true\" readOnly=\"true\"/>");
}
root = config.SelectSingleNode("/c:dataController");
EnsureChildNode(root, "views");
XPathNavigator viewsNode = config.SelectSingleNode("/c:dataController/c:views[not(c:view)]");
if (viewsNode != null)
{
StringBuilder sb = new StringBuilder("<view id=\"view1\" type=\"Form\" label=\"Form\"><categories><category id=\"c1\" flow=\"New" +
"Column\"><dataFields>");
XPathNodeIterator fieldIterator = config.Select("/c:dataController/c:fields/c:field");
while (fieldIterator.MoveNext())
{
string fieldName = fieldIterator.Current.GetAttribute("name", String.Empty);
bool hidden = (fieldName == "PrimaryKey");
string length = fieldIterator.Current.GetAttribute("length", String.Empty);
if (String.IsNullOrEmpty(length) && (((bool)(fieldIterator.Current.Evaluate("not(c:items/@style!=\'\')", _resolver))) == true))
{
if (fieldIterator.Current.GetAttribute("type", String.Empty) == "String")
{
length = "50";
}
else
{
length = "20";
}
}
sb.AppendFormat("<dataField fieldName=\"{0}\" hidden=\"{1}\"", fieldName, hidden.ToString().ToLower());
if (!(String.IsNullOrEmpty(length)))
{
sb.AppendFormat(" columns=\"{0}\"", length);
}
sb.Append(" />");
}
sb.Append("</dataFields></category></categories></view>");
viewsNode.AppendChild(sb.ToString());
}
EnsureChildNode(root, "actions");
XPathNavigator actionsNode = config.SelectSingleNode("/c:dataController/c:actions[not(c:actionGroup)]");
if (actionsNode != null)
{
actionsNode.AppendChild(@"<actionGroup id=""ag1"" scope=""Form"">
<action id=""a1"" commandName=""Confirm"" causesValidation=""true"" whenLastCommandName=""New"" />
<action id=""a2"" commandName=""Cancel"" whenLastCommandName=""New"" />
<action id=""a3"" commandName=""Confirm"" causesValidation=""true"" whenLastCommandName=""Edit"" />
<action id=""a4"" commandName=""Cancel"" whenLastCommandName=""Edit"" />
<action id=""a5"" commandName=""Edit"" causesValidation=""true"" />
</actionGroup>");
}
XPathNavigator plugIn = config.SelectSingleNode("/c:dataController/@plugIn");
if (plugIn != null)
{
plugIn.DeleteSelf();
config._plugIn = null;
}
return(config);
}