/// <summary>
/// Tries to create a Rule.
/// </summary>
/// <param name="t">Triple.</param>
private void TryCreateRule(Triple t)
{
String[] rule = new String[2];
Dictionary <INode, INode> variableMap = new Dictionary <INode, INode>();
int nextVarID = 1;
VariableContext vars = null;
if (t.Context != null && t.Context is VariableContext)
{
vars = (VariableContext)t.Context;
}
StringBuilder output = new StringBuilder();
// Generate the INSERT part of the Command
output.AppendLine("INSERT");
output.AppendLine("{");
foreach (Triple x in ((IGraphLiteralNode)t.Object).SubGraph.Triples)
{
if (vars == null)
{
output.AppendLine(_formatter.Format(x));
}
else
{
if (vars.IsVariable(x.Subject))
{
if (!variableMap.ContainsKey(x.Subject))
{
variableMap.Add(x.Subject, new VariableNode(null, "autoRuleVar" + nextVarID));
nextVarID++;
}
output.Append(_formatter.Format(variableMap[x.Subject]));
}
else
{
output.Append(_formatter.Format(x.Subject));
}
output.Append(' ');
if (vars.IsVariable(x.Predicate))
{
if (!variableMap.ContainsKey(x.Predicate))
{
variableMap.Add(x.Predicate, new VariableNode(null, "autoRuleVar" + nextVarID));
nextVarID++;
}
output.Append(_formatter.Format(variableMap[x.Predicate]));
}
else
{
output.Append(_formatter.Format(x.Predicate));
}
output.Append(' ');
if (vars.IsVariable(x.Object))
{
if (!variableMap.ContainsKey(x.Object))
{
variableMap.Add(x.Object, new VariableNode(null, "autoRuleVar" + nextVarID));
nextVarID++;
}
output.Append(_formatter.Format(variableMap[x.Object]));
}
else
{
output.Append(_formatter.Format(x.Object));
}
output.AppendLine(" .");
}
}
output.AppendLine("}");
rule[0] = output.ToString();
// Generate the WHERE part of the Command
output = new StringBuilder();
output.AppendLine("WHERE");
output.AppendLine("{");
foreach (Triple x in ((IGraphLiteralNode)t.Subject).SubGraph.Triples)
{
if (vars == null)
{
output.AppendLine(_formatter.Format(x));
}
else
{
if (vars.IsVariable(x.Subject))
{
if (!variableMap.ContainsKey(x.Subject))
{
variableMap.Add(x.Subject, new VariableNode(null, "autoRuleVar" + nextVarID));
nextVarID++;
}
output.Append(_formatter.Format(variableMap[x.Subject]));
}
else
{
output.Append(_formatter.Format(x.Subject));
}
output.Append(' ');
if (vars.IsVariable(x.Predicate))
{
if (!variableMap.ContainsKey(x.Predicate))
{
variableMap.Add(x.Predicate, new VariableNode(null, "autoRuleVar" + nextVarID));
nextVarID++;
}
output.Append(_formatter.Format(variableMap[x.Predicate]));
}
else
{
output.Append(_formatter.Format(x.Predicate));
}
output.Append(' ');
if (vars.IsVariable(x.Object))
{
if (!variableMap.ContainsKey(x.Object))
{
variableMap.Add(x.Object, new VariableNode(null, "autoRuleVar" + nextVarID));
nextVarID++;
}
output.Append(_formatter.Format(variableMap[x.Object]));
}
else
{
output.Append(_formatter.Format(x.Object));
}
output.AppendLine(" .");
}
}
output.AppendLine("}");
rule[1] = output.ToString();
ISyntaxValidationResults results = _validator.Validate(rule[0] + rule[1]);
if (results.IsValid)
{
_rules.Add(rule);
}
}