public Func <TEntity, bool> ParserRule(RuleEngineContext.RuleEngineContext contex, string propertyName, string ruleExpression)
{
IPlaceHolderParser <TEntity> placeHolderParser = RuleExpressionParserFactory.CreatePalceHolderParser <TEntity>();
placeHolderParser.AddPlaceHolders(_placeholders);
string strexpr = placeHolderParser.ParsePlaceHolder(contex, ruleExpression);
string strexpression = "SetPropertyValue(" + "\"" + propertyName + "\","
+ strexpr + ")";
try
{
var expression = DynamicExpressionParser.ParseLambda <TEntity, bool>
(contex.EntityContextMetadata.GetRuleParserConfig(), true, strexpression);
return(expression.Compile());
}
catch (Exception ex)
{
throw new ExpressionParserException("PropertyRuleExpressionParser", ruleExpression, strexpression, contex.RuleEngineId, ex);
}
}
public Func <TEntity, TType> ParserRule(RuleEngineContext.RuleEngineContext contex, string ruleExpression)
{
IPlaceHolderParser <TEntity> placeHolderParser = RuleExpressionParserFactory.CreatePalceHolderParser <TEntity>();
placeHolderParser.AddPlaceHolders(_placeholders);
var strexpression = placeHolderParser.ParsePlaceHolder(contex, ruleExpression);
try
{
var exprep = DynamicExpressionParser
.ParseLambda <TEntity, TType>(contex.EntityContextMetadata.GetRuleParserConfig(),
true, strexpression);
return(exprep.Compile());
}
catch (Exception ex)
{
throw new ExpressionParserException("AggregateFunctionParser", ruleExpression, strexpression, contex.RuleEngineId, ex);
}
}
public Delegate ParseGroupString(RuleEngineContext.RuleEngineContext contex, string placeHolderExpression)
{
IPlaceHolderParser <TEntity> placeHolderParser = RuleExpressionParserFactory.CreatePalceHolderParser <TEntity>();
placeHolderParser.AddPlaceHolders(_placeholders);
string[] expressions = placeHolderExpression.Split(',');
int propertyCounter = 1;
PlaceHolderTextParser place = new PlaceHolderTextParser(placeHolderExpression);
List <string> lstExpressions = new List <string>();
foreach (var expr in expressions)
{
try
{
string parsedExpression = placeHolderParser.ParsePlaceHolder(contex, string.Format("({0}) as Prop{1}", expr,
propertyCounter));
lstExpressions.Add(parsedExpression);
propertyCounter = propertyCounter + 1;
}
catch (System.Exception ex)
{
throw new ExpressionParserException("GroupKeyExpressionParser", placeHolderExpression, contex.RuleEngineId, ex);
}
}
var inputExpression = string.Format("new ({0})", string.Join(",", lstExpressions));
try
{
var lamdaexpr = DynamicExpressionParser
.ParseLambda(contex.EntityContextMetadata.GetRuleParserConfig(), true, typeof(TEntity), null, inputExpression);
return(lamdaexpr.Compile());
}
catch (Exception ex)
{
throw new ExpressionParserException("GroupKeyExpressionParser", placeHolderExpression, inputExpression, contex.RuleEngineId, ex);
}
}