/// <summary>
/// 转换表达式
/// </summary>
/// <param name="expression">表达式</param>
private void convertCall(MethodCallExpression expression)
{
MethodInfo method = expression.Method;
if (method.ReflectedType == typeof(ExpressionCall))
{
switch (method.Name)
{
case "In": convertCall(expression, true); break;
case "NotIn": convertCall(expression, false); break;
case "Like":
System.Collections.ObjectModel.ReadOnlyCollection <System.Linq.Expressions.Expression> arguments = expression.Arguments;
convertIsSimple(arguments[0]);
SqlStream.SimpleWriteNotNull(" like ");
convertIsSimple(expression.Object);
ConstantConverter.ConvertLike(SqlStream, arguments[1].GetConstant(), true, true);
break;
default:
SqlStream.SimpleWriteNotNull(method.Name);
SqlStream.Write('(');
if (expression.Arguments != null)
{
bool isNext = false;
foreach (Expression argumentExpression in expression.Arguments)
{
if (isNext)
{
SqlStream.Write(',');
}
Convert(argumentExpression);
isNext = true;
}
}
SqlStream.Write(')');
break;
}
}
else if (IsStringContains(method))
{
convertIsSimple(expression.Object);
SqlStream.SimpleWriteNotNull(" like ");
ConstantConverter.ConvertLike(SqlStream, expression.Arguments[0].GetConstant(), true, true);
}
else
{
convertConstant(expression.GetConstant());
}
}
/// <summary>
/// 转换表达式
/// </summary>
/// <param name="expression">表达式</param>
private void convertCall(MethodCallExpression expression)
{
MethodInfo method = expression.Method;
if (method.ReflectedType == typeof(ExpressionCall))
{
switch (method.Name)
{
case "In": convertCall(expression, true); break;
case "NotIn": convertCall(expression, false); break;
default:
SqlStream.SimpleWriteNotNull(method.Name);
SqlStream.Write('(');
if (expression.Arguments != null)
{
bool isNext = false;
foreach (Expression argumentExpression in expression.Arguments)
{
if (isNext)
{
SqlStream.Write(',');
}
Convert(argumentExpression);
isNext = true;
}
}
SqlStream.Write(')');
break;
}
}
else
{
convertConstant(expression.GetConstant());
}
}
