/// <summary>Initializes a new <see cref="ProjectionPathSegment"/> instance.</summary>
/// <param name="startPath">Path on which this segment is located.</param>
/// <param name="member">Name of member to access when traversing a property; possibly null.</param>
/// <param name="projectionType">
/// Type that we expect to project out; typically the same as <paramref name="member"/>, but may be adjusted.
/// </param>
internal ProjectionPathSegment(ProjectionPath startPath, string member, Type projectionType)
{
Debug.Assert(startPath != null, "startPath != null");
this.Member = member;
this.StartPath = startPath;
this.ProjectionType = projectionType;
}
/// <summary>Initializes a new <see cref="ProjectionPathSegment"/> instance.</summary>
/// <param name="startPath">Path on which this segment is located.</param>
/// <param name="memberExpression">Member expression for the projection path; possibly null.</param>
internal ProjectionPathSegment(ProjectionPath startPath, MemberExpression memberExpression)
{
Debug.Assert(startPath != null, "startPath != null");
Debug.Assert(memberExpression != null, "memberExpression != null");
this.StartPath = startPath;
Expression source = ResourceBinder.StripTo <Expression>(memberExpression.Expression);
this.Member = ClientTypeUtil.GetServerDefinedName(memberExpression.Member);
this.ProjectionType = memberExpression.Type;
this.SourceTypeAs = source.NodeType == ExpressionType.TypeAs ? source.Type : null;
}