/// <summary>
/// 获取条件的比较类型
/// </summary>
/// <param name="compareType"></param>
/// <returns></returns>
internal static IfConditionCompareType GetIfConditionCompareType(string compareType)
{
IfConditionCompareType icct = IfConditionCompareType.Equal;
if (!string.IsNullOrEmpty(compareType))
{
switch (compareType.Trim())
{
case ">":
icct = IfConditionCompareType.GT;
break;
case ">=":
icct = IfConditionCompareType.GTAndEqual;
break;
case "<":
icct = IfConditionCompareType.LT;
break;
case "<=":
icct = IfConditionCompareType.LTAndEqual;
break;
case "<>":
case "!=":
icct = IfConditionCompareType.UnEqual;
break;
case "^=":
icct = IfConditionCompareType.StartWith;
break;
case "$=":
icct = IfConditionCompareType.EndWith;
break;
case "*=":
icct = IfConditionCompareType.Contains;
break;
default:
icct = IfConditionCompareType.Equal;
break;
}
}
return(icct);
}
/// <summary>
/// 判断测试条件是否成功
/// </summary>
/// <returns></returns>
internal virtual bool IsTestSuccess()
{
//本元素没有条件.所以匹配成功
if (this.Values == null || this.VarExpression == null)
{
return(true);
}
//取得条件变量的值
object testValue = this.VarExpression.GetValue();
IfConditionCompareType compare = this.Compare == null ? IfConditionCompareType.Equal : Utility.GetIfConditionCompareType(this.Compare.GetTextValue());
if (Utility.IsNothing(testValue))
{
//条件变量的值为null或DBNull.Value.
switch (compare)
{
case IfConditionCompareType.Equal:
case IfConditionCompareType.Contains:
//如果相等或者包含比较.则比较值列表中是否有空值比较,如果有则认为成立.否则不成立
foreach (IExpression exp in this.Values)
{
object obj = exp.GetValue();
string value = Utility.IsNothing(obj) ? string.Empty : obj.ToString();
if (value == string.Empty)
{
return(true);
}
}
return(false);
case IfConditionCompareType.UnEqual:
//如果不相等比较.则比较值列表中是否有和非空值比较,如果有则认为成立.否则不成立
foreach (IExpression exp in this.Values)
{
object obj = exp.GetValue();
string value = Utility.IsNothing(obj) ? string.Empty : obj.ToString();
if (value != string.Empty)
{
return(true);
}
}
return(false);
case IfConditionCompareType.LT:
case IfConditionCompareType.LTAndEqual:
//小于比较,因为null都认为比所有值小.所以等式成立
return(true);
default:
//其它比较方式.都认为条件不成立
return(false);
}
}
else
{
//处理表达式
string expression = this.Expression == null ? string.Empty : this.Expression.GetTextValue();
if (!string.IsNullOrEmpty(expression))
{
object v = testValue;
try
{
testValue = Evaluator.ExpressionEvaluator.Eval(string.Format(expression, testValue));
}
catch
{
testValue = v;
}
}
bool success;
switch (compare)
{
case IfConditionCompareType.GT:
foreach (IExpression exp in this.Values)
{
object obj = exp.GetValue();
if (!Utility.IsNothing(obj))
{
if (Utility.CompareTo(testValue, obj, out success) > 0 && success)
{
return(true);
}
}
}
return(false);
case IfConditionCompareType.GTAndEqual:
foreach (IExpression exp in this.Values)
{
object obj = exp.GetValue();
if (!Utility.IsNothing(obj))
{
if (Utility.CompareTo(testValue, obj, out success) >= 0 && success)
{
return(true);
}
}
}
return(false);
case IfConditionCompareType.LT:
foreach (IExpression exp in this.Values)
{
object obj = exp.GetValue();
if (!Utility.IsNothing(obj))
{
if (Utility.CompareTo(testValue, obj, out success) < 0 && success)
{
return(true);
}
}
}
return(false);
case IfConditionCompareType.LTAndEqual:
foreach (IExpression exp in this.Values)
{
object obj = exp.GetValue();
if (!Utility.IsNothing(obj))
{
if (Utility.CompareTo(testValue, obj, out success) <= 0 && success)
{
return(true);
}
}
}
return(false);
case IfConditionCompareType.StartWith:
string testValueString1 = testValue.ToString();
foreach (IExpression exp in this.Values)
{
object obj = exp.GetValue();
if (!Utility.IsNothing(obj))
{
string s = obj.ToString();
if (!string.IsNullOrEmpty(s))
{
if (testValueString1.StartsWith(s, StringComparison.OrdinalIgnoreCase))
{
return(true);
}
}
}
}
return(false);
case IfConditionCompareType.EndWith:
string testValueString2 = testValue.ToString();
foreach (IExpression exp in this.Values)
{
object obj = exp.GetValue();
if (!Utility.IsNothing(obj))
{
string s = obj.ToString();
if (!string.IsNullOrEmpty(s))
{
if (testValueString2.EndsWith(s, StringComparison.OrdinalIgnoreCase))
{
return(true);
}
}
}
}
return(false);
case IfConditionCompareType.Contains:
string testValueString3 = testValue.ToString();
foreach (IExpression exp in this.Values)
{
object obj = exp.GetValue();
if (!Utility.IsNothing(obj))
{
string s = obj.ToString();
if (!string.IsNullOrEmpty(s))
{
if (testValueString3.IndexOf(s, StringComparison.OrdinalIgnoreCase) != -1)
{
return(true);
}
}
}
}
return(false);
case IfConditionCompareType.UnEqual:
//不等于比较
foreach (IExpression exp in this.Values)
{
object obj = exp.GetValue();
if (!Utility.IsNothing(obj))
{
if (testValue is string || (obj is string && !(testValue is IConvertible)))
{
//字符串比较.则不区分大小写
if (!string.Equals(obj.ToString(), testValue.ToString(), StringComparison.InvariantCultureIgnoreCase))
{
return(true);
}
}
else if (!(testValue is IComparable))
{
//优先进行类型比较
if (obj is Type)
{
if (testValue.GetType() != (Type)obj)
{
return(true);
}
}
else if (testValue.GetType() == obj.GetType())
{
if (testValue != obj)
{
return(true);
}
}
else
{
if (Utility.CompareTo(testValue, obj, out success) != 0 && success)
{
return(true);
}
}
}
else
{
if (Utility.CompareTo(testValue, obj, out success) != 0 && success)
{
return(true);
}
}
}
else
{
return(true);
}
}
return(false);
default:
//相等比较
foreach (IExpression exp in this.Values)
{
object obj = exp.GetValue();
if (!Utility.IsNothing(obj))
{
if (testValue is string || (obj is string && !(testValue is IConvertible)))
{
//字符串比较.则不区分大小写
if (string.Equals(obj.ToString(), testValue.ToString(), StringComparison.InvariantCultureIgnoreCase))
{
return(true);
}
}
else if (!(testValue is IComparable))
{
//优先进行类型比较
if (obj is Type)
{
if (testValue.GetType() == (Type)obj)
{
return(true);
}
}
else if (testValue.GetType() == obj.GetType())
{
if (testValue == obj)
{
return(true);
}
}
else
{
if (Utility.CompareTo(testValue, obj, out success) == 0 && success)
{
return(true);
}
}
}
else
{
if (Utility.CompareTo(testValue, obj, out success) == 0 && success)
{
return(true);
}
}
}
}
return(false);
}
}
}
