/// <summary>
/// Builds the decision table definition
/// </summary>
/// <returns>Table decision definition built</returns>
/// <exception cref="DmnBuilderException">Throws <see cref="DmnBuilderException"/> when the definition has already been built</exception>
/// <exception cref="DmnBuilderException">Throws <see cref="DmnBuilderException"/> when there is no input, no output or no rule defined in builder</exception>
protected internal override IDmnDecision Build()
{
if (IsBuilt)
{
throw Logger.Error <DmnBuilderException>("Decision is already built");
}
if (InputsInternal.Count < 1)
{
throw Logger.Error <DmnBuilderException>($"At least one input must be defined for decision table {Name}");
}
if (OutputsInternal.Count < 1)
{
throw Logger.Error <DmnBuilderException>($"At least one output must be defined for decision table {Name}");
}
if (RulesInternal.Count < 1)
{
throw Logger.Error <DmnBuilderException>($"At least one rule must be defined for decision table {Name}");
}
//create
var tableDecision = new DmnDecisionTable(
Name,
HitPolicy,
Aggregation,
InputsInternal.Select(i => i.GetResultOrBuild()).ToArray(),
OutputsInternal.Select(o => o.GetResultOrBuild()).ToArray(),
RulesInternal.Select(r => r.GetResultOrBuild()).ToArray(),
RequiredInputs.Select(i => Variables[i].GetResultOrBuild()).ToArray(),
RequiredDecisions.Select(d => Decisions[d].GetResultOrBuild()).ToArray());
ResultInternal = tableDecision;
return(tableDecision);
}
/// <summary>
/// Adds the table rule.
/// </summary>
/// <param name="name">Name of the table rule</param>
/// <param name="description">Description of th rule</param>
/// <param name="builder">Builder used to create the rule definition (see <see cref="TableRule"/> for details)</param>
/// <exception cref="DmnBuilderException">Throws <see cref="DmnBuilderException"/> when the definition has already been built</exception>
/// <exception cref="ArgumentNullException"> when the <paramref name="name"/> is not provided</exception>
/// <exception cref="ArgumentException"> when the <paramref name="name"/> is empty or whitespace</exception>
/// <exception cref="ArgumentNullException"> when the <paramref name="builder"/> is not provided</exception>
/// <exception cref="DmnBuilderException">Throws <see cref="DmnBuilderException"/> when the rule with given <paramref name="name"/> already exists</exception>
public TableDecision WithRule(string name, string description, Func <TableRule.TableRuleInputBuilder, TableRule.TableRuleOutputBuilder> builder)
{
if (IsBuilt)
{
throw Logger.Error <DmnBuilderException>($"Decision is already built");
}
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
if (string.IsNullOrWhiteSpace(name))
{
throw new ArgumentException("Missing rule name", nameof(name));
}
if (builder == null)
{
throw new ArgumentNullException(nameof(builder));
}
if (Rules.Any(r => r.Name.Equals(name, StringComparison.InvariantCultureIgnoreCase)))
{
throw Logger.Error <DmnBuilderException>($"Rule {name} already exists");
}
var rule = new TableRule(Variables, Decisions, InputsByRef, OutputsByRef, RulesInternal.Count, name, description);
builder.Invoke(new TableRule.TableRuleInputBuilder(rule));
RulesInternal.Add(rule);
return(this);
}
