public ConstantNode(ConstantExpression expression, SqlNode parent) : base(parent)
{
Value = expression.Value;
var parameter = Parent.GetParameterFor(expression.Value);
ParameterName = parameter.ParameterName;
}
public SqlParameterNode(MemberExpression expression, SqlNode parent) : base(parent)
{
Value = ExpressionValueRetreiver.GetValueFrom(expression);
var parameter = GetParameterFor(Value);
ParameterName = parameter.ParameterName;
}
public MethodNode(MethodCallExpression expression, SqlNode parent, IMethodTranslator translator) : base(parent)
{
MethodName = expression.Method.Name;
Object = For(expression.Object);
Arguments = expression.Arguments.Select(For).ToList();
_translator = translator;
}
public NewSimpleValueNode(NewExpression expression, SqlNode parent) : base(parent)
{
var arguments = GetArgumentValues(expression).ToArray();
Value = expression.Constructor.Invoke(arguments);
var parameter = Parent.GetParameterFor(Value);
ParameterName = parameter.ParameterName;
}
public ColumnNode(MemberExpression expression, SqlNode parent) : base(parent)
{
var parameter = expression.Expression as ParameterExpression;
if (parameter == null)
{
throw new InvalidOperationException(string.Format("Cannot select column for a parameterless MemberExpression."));
}
Name = expression.Member.Name;
Alias = GetAliasFor(parameter.Name);
}
public ColumnSelectorNode(MemberInitExpression expression, SqlNode parent) : base(parent)
{
var members = expression.Bindings.Select(b => b.Member).ToArray();
var otherProperties =
expression.Type.GetProperties()
.Where(p => p.PropertyType.IsValueOrString() && !members.Contains(p));
var otherFields =
expression.Type.GetFields()
.Where(f => f.FieldType.IsValueOrString() && !members.Contains(f));
Selectors = expression.Bindings
.Select(b => ColumnSelectorFor((dynamic)b))
.Concat(otherProperties.Select(m => new ColumnSelector(m, Expression.Constant(m.PropertyType.GetDefaultValue().ToDbValue()), this)))
.Concat(otherFields.Select(m => new ColumnSelector(m, Expression.Constant(m.FieldType.GetDefaultValue().ToDbValue()), this)))
.Cast <ColumnSelector>()
.ToList();
}
public ColumnSelectorNode(NewExpression expression, SqlNode parent) : base(parent)
{
// if (expression.Arguments.Count != expression.Members.Count)
// {
// throw new InvalidOperationException(string.Format("Sorry, I can't figure out how to solve arguments ({0}) into ({1})",
// string.Join(", ", expression.Arguments.Select(a => a.Type)),
// string.Join(", ", expression.Members.Select(m => m.Name))));
// }
var otherProperties =
expression.Type.GetProperties()
.Where(p => p.PropertyType.IsValueOrString() && !expression.Members.Contains(p));
var otherFields =
expression.Type.GetFields()
.Where(f => f.FieldType.IsValueOrString() && !expression.Members.Contains(f));
Selectors = expression.Members
.Select((m, ii) => new ColumnSelector(m, expression.Arguments[ii], this))
.Concat(otherProperties.Select(m => new ColumnSelector(m, Expression.Constant(m.PropertyType.GetDefaultValue().ToDbValue()), this)))
.Concat(otherFields.Select(m => new ColumnSelector(m, Expression.Constant(m.FieldType.GetDefaultValue().ToDbValue()), this)))
.ToList();
}
public ColumnSelector(MemberInfo member, Expression argument, SqlNode parent) : base(parent)
{
Alias = member.Name;
Argument = For(argument);
}
public AliasNode(ParameterExpression expression, SqlNode parent) : base(parent)
{
Name = expression.Name;
Alias = GetAliasFor(expression.Name);
}
public LambdaNode(LambdaExpression expression, SqlNode parent) : base(parent)
{
Parameters = expression.Parameters.Select(For).ToList();
Body = For(expression.Body);
}
protected SqlNode(SqlNode parent)
{
Parent = parent;
}
public BinaryNode(BinaryExpression expression, SqlNode parent) : base(parent)
{
Left = For(expression.Left);
Operator = SqlOperator.For(expression.NodeType);
Right = For(expression.Right);
}
