/// <summary>
/// This will compile the rules and store them to dictionary
/// </summary>
/// <typeparam name="T">type of entity</typeparam>
/// <param name="workflowName">workflow name</param>
/// <returns>bool result</returns>
private bool RegisterRule(string workflowName, params RuleParameter[] ruleParams)
{
string compileRulesKey = GetCompileRulesKey(workflowName, ruleParams);
if (_rulesCache.ContainsCompiledRules(compileRulesKey))
{
return(true);
}
var workflowRules = _rulesCache.GetWorkFlowRules(workflowName);
if (workflowRules != null)
{
var lstFunc = new List <Delegate>();
foreach (var rule in _rulesCache.GetRules(workflowName))
{
RuleCompiler ruleCompiler = new RuleCompiler(new RuleExpressionBuilderFactory(_reSettings), _logger);
lstFunc.Add(ruleCompiler.CompileRule(rule, ruleParams));
}
_rulesCache.AddOrUpdateCompiledRule(compileRulesKey, new CompiledRule()
{
CompiledRules = lstFunc
});
_logger.LogTrace($"Rules has been compiled for the {workflowName} workflow and added to dictionary");
return(true);
}
else
{
return(false);
}
}
public RulesEngine(ILogger logger = null, ReSettings reSettings = null)
{
_logger = logger ?? new NullLogger <RulesEngine>();
_reSettings = reSettings ?? new ReSettings();
_ruleExpressionParser = new RuleExpressionParser(_reSettings);
_ruleCompiler = new RuleCompiler(new RuleExpressionBuilderFactory(_reSettings, _ruleExpressionParser), _reSettings, _logger);
_actionFactory = new ActionFactory(GetActionRegistry(_reSettings));
}
/// <summary>
/// This will compile the rules and store them to dictionary
/// </summary>
/// <param name="workflowName">workflow name</param>
/// <param name="ruleParams">The rule parameters.</param>
/// <returns>
/// bool result
/// </returns>
private bool RegisterRule(string workflowName, params RuleParameter[] ruleParams)
{
string compileRulesKey = _rulesCache.GetRulesCacheKey(workflowName);
if (_rulesCache.ContainsCompiledRules(compileRulesKey))
{
return(true);
}
var workflowRules = _rulesCache.GetWorkFlowRules(workflowName);
if (workflowRules != null)
{
var lstFunc = new List <RuleFunc <RuleResultTree> >();
var ruleCompiler = new RuleCompiler(new RuleExpressionBuilderFactory(_reSettings), _logger);
foreach (var rule in _rulesCache.GetRules(workflowName))
{
var compiledParamsKey = GetCompiledParamsCacheKey(workflowName, rule);
CompiledRuleParam compiledRuleParam = _compiledParamsCache.GetOrCreate(compiledParamsKey, (entry) => ruleParamCompiler.CompileParamsExpression(rule, ruleParams));
var updatedRuleParams = compiledRuleParam != null?ruleParams?.Concat(compiledRuleParam?.RuleParameters) : ruleParams;
var compiledRule = ruleCompiler.CompileRule(rule, updatedRuleParams?.ToArray());
RuleFunc <RuleResultTree> updatedRule = (object[] paramList) => {
var inputs = paramList.AsEnumerable();
IEnumerable <CompiledParam> localParams = compiledRuleParam?.CompiledParameters ?? new List <CompiledParam>();
foreach (var localParam in localParams)
{
var evaluatedLocalParam = ruleParamCompiler.EvaluateCompiledParam(localParam.Name, localParam.Value, inputs);
inputs = inputs.Append(evaluatedLocalParam.Value);
}
var result = compiledRule(inputs.ToArray());
result.RuleEvaluatedParams = compiledRuleParam?.RuleParameters;
return(result);
};
lstFunc.Add(updatedRule);
}
_rulesCache.AddOrUpdateCompiledRule(compileRulesKey, lstFunc);
_logger.LogTrace($"Rules has been compiled for the {workflowName} workflow and added to dictionary");
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// This will compile the rules and store them to dictionary
/// </summary>
/// <param name="workflowName">workflow name</param>
/// <param name="ruleParams">The rule parameters.</param>
/// <returns>
/// bool result
/// </returns>
private bool RegisterCompiledRule(string workflowName, params RuleParameter[] ruleParams)
{
string compileRulesKey = _rulesCache.GetRulesCacheKey(workflowName);
if (_rulesCache.ContainsCompiledRules(compileRulesKey))
{
return(true);
}
var workflowRules = _rulesCache.GetWorkFlowRules(workflowName);
if (workflowRules != null)
{
var lstFunc = new List <CompiledRule>();
var ruleCompiler = new RuleCompiler(new RuleExpressionBuilderFactory(_reSettings), _logger);
foreach (var rule in _rulesCache.GetRules(workflowName))
{
var compiledParamsKey = _compiledParamsCache.GetCompiledParamsCacheKey(workflowName, rule);
CompiledRuleParam compiledRuleParam;
if (_compiledParamsCache.ContainsParams(compiledParamsKey))
{
compiledRuleParam = _compiledParamsCache.GetParams(compiledParamsKey);
}
else
{
compiledRuleParam = ruleParamCompiler.CompileParamsExpression(rule, ruleParams);
_compiledParamsCache.AddOrUpdateParams(compiledParamsKey, compiledRuleParam);
}
var updatedRuleParams = compiledRuleParam != null?ruleParams?.Concat(compiledRuleParam?.RuleParameters) : ruleParams;
var compiledRule = ruleCompiler.CompileRule(rule, updatedRuleParams?.ToArray());
lstFunc.Add(new CompiledRule {
Rule = compiledRule, CompiledParameters = compiledRuleParam
});
}
_rulesCache.AddOrUpdateCompiledRule(compileRulesKey, lstFunc);
_logger.LogTrace($"Rules has been compiled for the {workflowName} workflow and added to dictionary");
return(true);
}
else
{
return(false);
}
}
