|
public static CheckConstantExpression ( string methodName, |
||
| methodName | string | |
| argument | ||
| parameterName | string | |
| return | ||
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 Expression Transform(MethodCallExpression methodCallExpression)
{
ArgumentUtility.CheckNotNull("methodCallExpression", methodCallExpression);
MethodCallTransformerUtility.CheckArgumentCount(methodCallExpression, 2);
MethodCallTransformerUtility.CheckInstanceMethod(methodCallExpression);
MethodCallTransformerUtility.CheckConstantExpression("Insert", methodCallExpression.Arguments[0], "insertionIndex");
var insertionIndexExpression = Expression.Add(methodCallExpression.Arguments[0], new SqlLiteralExpression(1));
var testExpression = Expression.Equal(new SqlLengthExpression(methodCallExpression.Object), insertionIndexExpression);
var concatMethod = typeof(string).GetMethod("Concat", new[] { typeof(string), typeof(string) });
var thenExpression = Expression.Add(methodCallExpression.Object, methodCallExpression.Arguments[1], concatMethod);
var elseExpression = new SqlFunctionExpression(
methodCallExpression.Type,
"STUFF",
methodCallExpression.Object,
insertionIndexExpression,
new SqlLiteralExpression(0),
methodCallExpression.Arguments[1]);
return(Expression.Condition(testExpression, thenExpression, elseExpression));
}