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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using org.uscxml;
namespace embedding
{
class CustomDataModel : DataModel
{
public override DataModel create(Interpreter interpreter)
{
return new CustomDataModel();
}
public override void eval(string scriptElem, string expr)
{
// evaluate expr on the datamodel
}
public override bool evalAsBool(string elem, string content)
{
return evalAsBool(content);
}
public override bool evalAsBool(string expr)
{
// evaluate expr as bool
return false;
}
public override void assign(string assignElem, string location, string content)
{
// set variable at location to content
}
public override string evalAsString(string expr)
{
// evaluate given expr as a string (e.g. for <log>)
return "";
}
public override uint getLength(string expr)
{
// return the length of an expression for foreach
return 0;
}
public override StringList getNames()
{
// name of this datamodel to be used in scxml element
StringList names = new StringList();
names.add("simple");
return names;
}
public override Data getStringAsData(string content)
{
Data data = new Data();
return data;
}
public override void init(string dataElem, string location, string content)
{
// initialize variable at location to evaluated content - used for scxml data elements
}
public override void setEvent(Event arg0)
{
// represent given event as _event in datamodel
}
public override bool isDeclared(string expr)
{
// using an undeclared variable is an error.execution with some scxml constructs -
// determine whether the given expression is defined
return true;
}
public override void setForeach(string item, string array, string index, uint iteration)
{
// called per foreach iteration, set datamodel variables accordingly
}
public override bool validate(string location, string schema)
{
// primarily intended for xpath datamodel
return true;
}
}
}
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