private static string GetStringForExpression(ITranslator translator, Expression expression, Parameters parameters)
{
var memberExpression = expression as MemberExpression;
if (memberExpression != null)
{
var constantExpression = memberExpression.Expression as ConstantExpression;
if (constantExpression != null)
{
var container = constantExpression.Value;
var member = memberExpression.Member;
var fieldInfo = member as FieldInfo;
if (fieldInfo != null)
{
var value = fieldInfo.GetValue(container);
return(GetStringForExpression(translator, Expression.Constant(value), parameters));
}
var propertyInfo = member as PropertyInfo;
if (propertyInfo != null)
{
var value = propertyInfo.GetValue(container, null);
return(GetStringForExpression(translator, Expression.Constant(value), parameters));
}
}
var tableDefinition = new TableDefinition(memberExpression.Member.DeclaringType);
return(string.Concat(tableDefinition.Name, ".", memberExpression.Member.Name));
}
var constExpr = expression as ConstantExpression;
if (constExpr != null)
{
var value = GetValueFrom(translator, constExpr.Type, constExpr.Value);
var key = parameters.Add(translator, value);
return(key);
}
var methodExpression = expression as MethodCallExpression;
if (methodExpression != null)
{
string concat;
if (GetSqlExtensionMethodCallConstant(translator, methodExpression, parameters, out concat))
{
return(concat);
}
}
var newArrayExpression = expression as NewArrayExpression;
if (newArrayExpression != null)
{
return(string.Join(",", newArrayExpression.Expressions.Select(ex => GetStringForExpression(translator, ex, parameters))));
}
return(string.Empty);
}
public static string ConstantExpressionString(ITranslator translator, ConstantExpression constantExpression, Parameters parameters)
{
var value = GetValueFrom(translator, constantExpression.Type, constantExpression.Value);
return(parameters.Add(translator, value));
}