public void Transform_TwoArguments()
{
var method = typeof(StringExtensions).GetMethod(
"SqlContainsFulltext",
BindingFlags.Public | BindingFlags.Static,
null,
CallingConventions.Any,
new[] { typeof(string), typeof(string), typeof(string) },
null);
var objectExpression = Expression.Constant("Test");
var argument1 = Expression.Constant("es");
var language = Expression.Constant("language");
var expression = Expression.Call(method, objectExpression, argument1, language);
var transformer = new ContainsFulltextMethodCallTransformer();
var result = transformer.Transform(expression);
var argumentExpression = Expression.Constant(string.Format("{0}", argument1.Value));
var compositeExpression = new SqlCompositeCustomTextGeneratorExpression(
typeof(string), new SqlCustomTextExpression("LANGUAGE ", typeof(string)), language);
var expectedResult =
new SqlFunctionExpression(typeof(bool), "CONTAINS", objectExpression, argumentExpression, compositeExpression);
SqlExpressionTreeComparer.CheckAreEqualTrees(expectedResult, result);
}
public Expression Transform(MethodCallExpression methodCallExpression)
{
ArgumentUtility.CheckNotNull("methodCallExpression", methodCallExpression);
if (methodCallExpression.Arguments.Count == 2)
{
return(new SqlFunctionExpression(typeof(bool), "FREETEXT", methodCallExpression.Arguments[0], methodCallExpression.Arguments[1]));
}
else if (methodCallExpression.Arguments.Count == 3)
{
MethodCallTransformerUtility.CheckConstantExpression(
methodCallExpression.Method.Name, methodCallExpression.Arguments[2], "language parameter");
var compositeExpression = new SqlCompositeCustomTextGeneratorExpression(
typeof(string), new SqlCustomTextExpression("LANGUAGE ", typeof(string)), methodCallExpression.Arguments[2]);
return(new SqlFunctionExpression(
typeof(bool), "FREETEXT", methodCallExpression.Arguments[0], methodCallExpression.Arguments[1], compositeExpression));
}
else
{
var message = string.Format(
"IndexOf function with {0} arguments is not supported. Expression: '{1}'",
methodCallExpression.Arguments.Count,
methodCallExpression);
throw new NotSupportedException(message);
}
}
public Expression Transform(MethodCallExpression methodCallExpression)
{
MethodCallTransformerUtility.CheckArgumentCount(methodCallExpression, 2, 3);
MethodCallTransformerUtility.CheckStaticMethod(methodCallExpression);
if (methodCallExpression.Arguments.Count == 2) // overload without language
{
return(new SqlFunctionExpression(typeof(bool), "CONTAINS", methodCallExpression.Arguments[0], methodCallExpression.Arguments[1]));
}
else
{
MethodCallTransformerUtility.CheckConstantExpression(methodCallExpression.Method.Name, methodCallExpression.Arguments[2], "language parameter");
var compositeExpression = new SqlCompositeCustomTextGeneratorExpression(
typeof(string), new SqlCustomTextExpression("LANGUAGE ", typeof(string)), methodCallExpression.Arguments[2]);
return(new SqlFunctionExpression(
typeof(bool), "CONTAINS", methodCallExpression.Arguments[0], methodCallExpression.Arguments[1], compositeExpression));
}
}
public void SetUp()
{
_expression1 = Expression.Constant("5");
_expression2 = Expression.Constant("1");
_sqlCompositeCustomTextGeneratorExpression = new SqlCompositeCustomTextGeneratorExpression(typeof(Cook), _expression1, _expression2);
}
