//public IDictionary<Rule,string>
private List <SpecificationInfo <T> > GetSpecificationList(string property)
{
// Get These Rules from a database table
var ta = new ProcessingRulesTableAdapter();
var dataTable = ta.GetDataByRuleProperty(property);
var specificationsList = new List <SpecificationInfo <T> >();
foreach (DataRow dataRow in dataTable.Rows)
{
var processingRuleId = Int32.Parse(dataRow["ProcessingRuleId"].ToString());
var operationName = dataRow["Operator"].ToString();
var evalPropertyName = dataRow["EvalProperty"].ToString();
var value = dataRow["Value"];
var mainJoin = dataRow["MainJoin"].ToString();
var mainGroup = int.Parse(dataRow["MainGroup"].ToString());
var subJoin = dataRow["SubJoin"]?.ToString() ?? "";
var subGroupValue = dataRow["SubGroup"]?.ToString() ?? "-1";
var subGroup = int.Parse(string.IsNullOrEmpty(subGroupValue) ? "-1" : subGroupValue);
var ruleValue = dataRow["RuleValue"].ToString();
var defaultValue = dataRow["DefaultValue"].ToString();
Operator operation;
if (Enum.TryParse(operationName, true, out operation))
{
var rule = new FakeRule(evalPropertyName, operation, value, processingRuleId);
var compiledRule = CompileRule <T>(rule);
var cplSpec = new FakeRule.ExpressionSpecification <T>(compiledRule);
var specificationInfo = new SpecificationInfo <T>();
specificationInfo.MainJoin = mainJoin;
specificationInfo.MainGroup = mainGroup;
specificationInfo.SubJoin = subJoin;
specificationInfo.SubGroup = subGroup;
specificationInfo.Specification = cplSpec;
specificationInfo.EvalProperty = evalPropertyName;
specificationInfo.RuleProperty = property;
specificationInfo.RuleValue = ruleValue;
specificationInfo.DefaultValue = defaultValue;
specificationInfo.ProcessingRuleId = processingRuleId;
specificationsList.Add(specificationInfo);
}
}
return(specificationsList);
return(specificationsList);
}
public Func <T, bool> CompileRule <T>(FakeRule rule)
{
if (string.IsNullOrEmpty(rule.PropertyName))
{
ExpressionBuilder expressionBuilder = new ExpressionBuilder();
var param = Expression.Parameter(typeof(T));
Expression expression = expressionBuilder.BuildExpression <T>(rule.Operator_, rule.Value, param);
Func <T, bool> func = Expression.Lambda <Func <T, bool> >(expression, param).Compile();
return(func);
}
else
{
ExpressionBuilder expressionBuilder = new ExpressionBuilder();
var param = Expression.Parameter(typeof(T));
Expression expression = expressionBuilder.BuildExpression <T>(rule.PropertyName, rule.Operator_, rule.Value, param);
Func <T, bool> func = Expression.Lambda <Func <T, bool> >(expression, param).Compile();
return(func);
}
}
