/// <summary>
/// Visitor pattern method for <see cref="T:System.Data.Entity.Core.Common.CommandTrees.DbPropertyExpression" />.
/// </summary>
/// <param name="expression"> The DbPropertyExpression that is being visited. </param>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="expression" />
/// is null
/// </exception>
public override void Visit(DbPropertyExpression expression)
{
Check.NotNull <DbPropertyExpression>(expression, nameof(expression));
if (expression.Instance == null)
{
return;
}
this.VisitExpression(expression.Instance);
}
/// <summary>
/// Visitor pattern method for <see cref="DbPropertyExpression" />.
/// </summary>
/// <param name="expression"> The DbPropertyExpression that is being visited. </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="expression" />
/// is null
/// </exception>
public override void Visit(DbPropertyExpression expression)
{
Check.NotNull(expression, "expression");
if (expression.Instance != null)
{
VisitExpression(expression.Instance);
}
}
public override DbExpression Visit(DbPropertyExpression expression)
{
Check.NotNull(expression, "expression");
DbExpression result = expression;
var newInstance = VisitExpression(expression.Instance);
if (!ReferenceEquals(expression.Instance, newInstance))
{
result = CqtBuilder.Property(newInstance, expression.Property.Name);
}
NotifyIfChanged(expression, result);
return(result);
}
/// <summary>Implements the visitor pattern for retrieving an instance property.</summary>
/// <returns>The implemented visitor.</returns>
/// <param name="expression">The expression.</param>
public override DbExpression Visit(DbPropertyExpression expression)
{
Check.NotNull(expression, "expression");
DbExpression result = expression;
var newInstance = VisitExpression(expression.Instance);
if (!ReferenceEquals(expression.Instance, newInstance))
{
if (Helper.IsRelationshipEndMember(expression.Property))
{
RelationshipEndMember endMember;
if (!TryGetMember(newInstance, expression.Property.Name, out endMember))
{
var type = newInstance.ResultType.EdmType;
throw new ArgumentException(
Strings.Cqt_Copier_EndNotFound(
expression.Property.Name, TypeHelpers.GetFullName(type.NamespaceName, type.Name)));
}
result = newInstance.Property(endMember);
}
else if (Helper.IsNavigationProperty(expression.Property))
{
NavigationProperty navProp;
if (!TryGetMember(newInstance, expression.Property.Name, out navProp))
{
var type = newInstance.ResultType.EdmType;
throw new ArgumentException(
Strings.Cqt_Copier_NavPropertyNotFound(
expression.Property.Name, TypeHelpers.GetFullName(type.NamespaceName, type.Name)));
}
result = newInstance.Property(navProp);
}
else
{
EdmProperty prop;
if (!TryGetMember(newInstance, expression.Property.Name, out prop))
{
var type = newInstance.ResultType.EdmType;
throw new ArgumentException(
Strings.Cqt_Copier_PropertyNotFound(
expression.Property.Name, TypeHelpers.GetFullName(type.NamespaceName, type.Name)));
}
result = newInstance.Property(prop);
}
}
return(result);
}
/// <summary>Implements the visitor pattern for retrieving an instance property.</summary>
/// <returns>The implemented visitor.</returns>
/// <param name="expression">The expression.</param>
public override DbExpression Visit(DbPropertyExpression expression)
{
Check.NotNull <DbPropertyExpression>(expression, nameof(expression));
DbExpression dbExpression = (DbExpression)expression;
DbExpression instance = this.VisitExpression(expression.Instance);
if (!object.ReferenceEquals((object)expression.Instance, (object)instance))
{
if (Helper.IsRelationshipEndMember(expression.Property))
{
RelationshipEndMember member;
if (!DbExpressionRebinder.TryGetMember <RelationshipEndMember>(instance, expression.Property.Name, out member))
{
EdmType edmType = instance.ResultType.EdmType;
throw new ArgumentException(Strings.Cqt_Copier_EndNotFound((object)expression.Property.Name, (object)TypeHelpers.GetFullName(edmType.NamespaceName, edmType.Name)));
}
dbExpression = (DbExpression)instance.Property(member);
}
else if (Helper.IsNavigationProperty(expression.Property))
{
NavigationProperty member;
if (!DbExpressionRebinder.TryGetMember <NavigationProperty>(instance, expression.Property.Name, out member))
{
EdmType edmType = instance.ResultType.EdmType;
throw new ArgumentException(Strings.Cqt_Copier_NavPropertyNotFound((object)expression.Property.Name, (object)TypeHelpers.GetFullName(edmType.NamespaceName, edmType.Name)));
}
dbExpression = (DbExpression)instance.Property(member);
}
else
{
EdmProperty member;
if (!DbExpressionRebinder.TryGetMember <EdmProperty>(instance, expression.Property.Name, out member))
{
EdmType edmType = instance.ResultType.EdmType;
throw new ArgumentException(Strings.Cqt_Copier_PropertyNotFound((object)expression.Property.Name, (object)TypeHelpers.GetFullName(edmType.NamespaceName, edmType.Name)));
}
dbExpression = (DbExpression)instance.Property(member);
}
}
return(dbExpression);
}
/// <summary> /// When overridden in a derived class, implements the visitor pattern for /// <see /// cref="T:System.Data.Entity.Core.Common.CommandTrees.DbPropertyExpression" /> /// . /// </summary> /// <returns>A result value of a specific type.</returns> /// <param name="expression"> /// The <see cref="T:System.Data.Entity.Core.Common.CommandTrees.DbPropertyExpression" /> that is being visited. /// </param> public abstract TResultType Visit(DbPropertyExpression expression);
/// <summary> /// When overridden in a derived class, implements the visitor pattern for /// <see cref="T:System.Data.Entity.Core.Common.CommandTrees.DbPropertyExpression" /> /// . /// </summary> /// <param name="expression"> /// The <see cref="T:System.Data.Entity.Core.Common.CommandTrees.DbPropertyExpression" /> that is visited. /// </param> public abstract void Visit(DbPropertyExpression expression);
public override void Visit(DbPropertyExpression expression)
{
}