public PropertyTreeNode(PropertyInfo propertyInfo, ExpressionTreeNode parent) : base(parent)
{
this.PropertyInfo = propertyInfo;
m_resultType = propertyInfo.PropertyType;
this.DbColumnMappings = new List <DBColumnMapping>((DBColumnMapping[])propertyInfo.GetCustomAttributes(typeof(DBColumnMapping), true));
foreach (var dbColumnMapping in DbColumnMappings)
{
dbColumnMapping.Host = this;
}
}
public NonLeafPropertyNode(PropertyInfo propertyInfo, ExpressionTreeNode parent)
: base(propertyInfo, parent)
{
this.m_exprIniter = new Lazy <Expression>(this.CreatePropertyAccessorExpression);
m_noNullCheck = propertyInfo.GetCustomAttributes(typeof(NoNullCheckAttribute), true).Any()
| propertyInfo.GetCustomAttributes(typeof(DBColumnPath), true).Cast <DBColumnPath>()
.Any(p => p.HasOption(DBColumnPathOptions.DoNotGenerateNullCheck));
if (m_noNullCheck && s_logger.IsTraceEnabled)
{
s_logger.TraceFormat("No null check is enabled on {0}", this);
}
}
public ExpressionTreeNode(ExpressionTreeNode parent)
{
this.Parent = parent;
if (parent == null)
{
Depth = 0;
}
else
{
Depth = parent.Depth + 1;
}
}
public LeafPropertyNode(PropertyInfo propertyInfo, ExpressionTreeNode parent, string destLabel)
: base(propertyInfo, parent)
{
var externalMappings =
TypeAccessorConfig.s_externalMappings.Where(pair => pair.Item2.DestLabel == destLabel)
.Where(pair => TypeAccessorConfig.ExpressionPathEquals(pair.Item1, this.RawExpression))
.Select(pair => pair.Item2)
.ToList();
foreach (var externalMapping in externalMappings)
{
externalMapping.Host = this;
}
DbColumnMappings = DbColumnMappings.Where(m => m.DestLabel == destLabel).Union(externalMappings).ToList();
//type safety check for db column mappings in order to fail early rather than insertion time
foreach (var dbColumnMapping in DbColumnMappings)
{
if (dbColumnMapping.DefaultValue != null)
{
if (this.ResultType.IsValueType)
{
Type innerType;
if (this.ResultType.IsNullableType(out innerType))
{
if (innerType.IsInstanceOfType(dbColumnMapping.DefaultValue))
{
//conversion here
//dbColumnMapping.DefaultValue = Convert.ChangeType(dbColumnMapping.DefaultValue,this.ResultType);
}
else
{
throw new InvalidDBColumnMappingException("The default value has wrong type", dbColumnMapping, this);
}
}
else
{
throw new InvalidDBColumnMappingException(
"A value type should not have non-null default value. If you want one consider declare the property type as Nullable<T>."
, dbColumnMapping, this);
}
}
else if (this.ResultType == typeof(string))
{
if (!(dbColumnMapping.DefaultValue is string))
{
throw new InvalidDBColumnMappingException("The default value has wrong type", dbColumnMapping, this);
}
}
else if (this.ResultType == typeof(byte[]))
{
if (!(dbColumnMapping.DefaultValue is byte[]))
{
throw new InvalidDBColumnMappingException("The default value has wrong type", dbColumnMapping, this);
}
}
else
{
Debug.Fail("Should not reach here. A leaf node should not have ResultType as class type");
}
}
}
}