/// <summary>
/// Returns the value of the <see cref="Expression"/>.
/// </summary>
/// <param name="expression"><see cref="Expression"/> to visit.</param>
/// <returns>Returns the value of the <see cref="Expression"/>.</returns>
public object VisitResult(SerializableExpression expression)
{
if (expression == null)
{
return(null);
}
if (_convertedObjects.ContainsKey(expression.HashCode))
{
return(_convertedObjects[expression.HashCode]);
}
object foundObject;
SerializableConstantExpression serializableConstantExpression = expression as SerializableConstantExpression;
if (serializableConstantExpression != null)
{
foundObject = GetResultConstantExpression(serializableConstantExpression);
}
else
{
SerializableMethodCallExpression serializableMethodCallExpression = expression as SerializableMethodCallExpression;
if (serializableMethodCallExpression != null)
{
foundObject = GetResultMethodCallExpression(serializableMethodCallExpression);
}
else
{
throw new NotImplementedException();
}
}
_convertedObjects[expression.HashCode] = foundObject;
return(foundObject);
}
/// <summary>
/// Visits a <see cref="SerializableConstantExpression"/>.
/// </summary>
/// <param name="expression"><see cref="SerializableConstantExpression"/> to visit.</param>
/// <returns>Returns the converted <see cref="Expression"/>.</returns>
protected override Expression VisitSerializableConstantExpression(SerializableConstantExpression expression)
{
if (expression.Value != null)
{
var t = expression.Value.GetType();
#if !NETFX_CORE
if (t.IsGenericType && t.GetGenericTypeDefinition() == typeof(InterLinqQuery <>))
#else
if (t.GetTypeInfo().IsGenericType&& t.GetGenericTypeDefinition() == typeof(InterLinqQuery <>))
#endif
{
var qry = expression.Value as InterLinqQueryBase;
var newQry = this.QueryHandler.Get(qry.ElementType, qry.AdditionalObject, qry.QueryName, sessionObject, qry.Parameters);
return(Expression.Constant(newQry));
}
#if !NETFX_CORE
return(Expression.Constant(expression.Value, expression.Type.GetClrVersion() as Type));
#else
return(Expression.Constant(expression.Value, ((TypeInfo)expression.Type.GetClrVersion()).AsType()));
#endif
}
#if !NETFX_CORE
return(Expression.Constant(null, (Type)expression.Type.GetClrVersion()));
#else
return(Expression.Constant(null, ((TypeInfo)expression.Type.GetClrVersion()).AsType()));
#endif
}
/// <summary>
/// Visits a <see cref="SerializableConstantExpression"/>.
/// </summary>
/// <param name="expression"><see cref="SerializableConstantExpression"/> to visit.</param>
/// <returns>Returns the converted <see cref="Expression"/>.</returns>
protected override Expression VisitSerializableConstantExpression(SerializableConstantExpression expression)
{
if (expression.Value != null)
{
return(Expression.Constant(expression.Value, expression.Type.RepresentedType));
}
return(Expression.Constant(null, (Type)expression.Type.GetClrVersion()));
}
/// <summary>
/// Executes a <see cref="SerializableConstantExpression"/> and returns the result.
/// </summary>
/// <param name="expression"><see cref="SerializableConstantExpression"/> to convert.</param>
/// <returns>Returns the result of a <see cref="SerializableConstantExpression"/>.</returns>
protected override object GetResultConstantExpression(SerializableConstantExpression expression)
{
if (expression.Value == null)
{
return(null);
}
if (expression.Value is InterLinqQueryBase)
{
Type type = ((InterLinqQueryBase)expression.Value).ElementType;
return(QueryHandler.Get(type));
}
return(expression.Value);
}
/// <summary>
/// Executes a <see cref="SerializableConstantExpression"/> and returns the result.
/// </summary>
/// <param name="expression"><see cref="SerializableConstantExpression"/> to convert.</param>
/// <returns>Returns the result of a <see cref="SerializableConstantExpression"/>.</returns>
protected override object GetResultConstantExpression(SerializableConstantExpression expression, object sessionObject)
{
if (expression.Value == null)
{
return(null);
}
if (expression.Value is InterLinqQueryBase)
{
InterLinqQueryBase baseQuery = (InterLinqQueryBase)expression.Value;
Type type = ((InterLinqQueryBase)expression.Value).ElementType;
return(QueryHandler.Get(type, baseQuery.AdditionalObject, baseQuery.QueryName, sessionObject,
(!string.IsNullOrEmpty(baseQuery.QueryName) && baseQuery.QueryParameters != null &&
baseQuery.QueryParameters.Count != 0)
? baseQuery.QueryParameters.Select(s => VisitResult(s, sessionObject)).ToArray()
: baseQuery.Parameters));
//return QueryHandler.Get(type, baseQuery.AdditionalObject, baseQuery.QueryName, sessionObject, (!string.IsNullOrEmpty(baseQuery.QueryName) && baseQuery.QueryParameters != null && baseQuery.QueryParameters.Count != 0) ? baseQuery.QueryParameters.Select(s => VisitResult(s, sessionObject)).ToArray() : null);
}
return(expression.Value);
}
/// <summary> /// Executes a <see cref="SerializableConstantExpression"/> and returns the result. /// </summary> /// <param name="expression"><see cref="SerializableConstantExpression"/> to convert.</param> /// <returns>Returns the result of a <see cref="SerializableConstantExpression"/>.</returns> protected abstract object GetResultConstantExpression(SerializableConstantExpression expression);
/// <summary> /// Visits a <see cref="SerializableConstantExpression"/>. /// </summary> /// <param name="expression"><see cref="SerializableConstantExpression"/> to visit.</param> /// <returns>Returns the converted <see cref="Expression"/>.</returns> protected abstract Expression VisitSerializableConstantExpression(SerializableConstantExpression expression);
private Expression VisitConstant(SerializableConstantExpression c)
{
return(Expression.Constant(c.Value, c.Type));
}