public override Expression Remap(int offset, Dictionary <Expression, Expression> processedExpressions)
{
if (!CanRemap)
{
return(this);
}
Expression result;
if (processedExpressions.TryGetValue(this, out result))
{
return(result);
}
var mapping = new Segment <int>(Mapping.Offset + offset, Mapping.Length);
result = new FieldExpression(ExtendedExpressionType.Field, Field, mapping, OuterParameter, DefaultIfEmpty);
if (owner == null)
{
return(result);
}
processedExpressions.Add(this, result);
Owner.Remap(offset, processedExpressions);
return(result);
}
public static EntityExpression Create(TypeInfo typeInfo, int offset, bool keyFieldsOnly)
{
if (!typeInfo.IsEntity && !typeInfo.IsInterface)
{
throw new ArgumentException(string.Format(Strings.ExPersistentTypeXIsNotEntityOrPersistentInterface, typeInfo.Name), "typeInfo");
}
var fields = new List <PersistentFieldExpression>();
var keyExpression = KeyExpression.Create(typeInfo, offset);
fields.Add(keyExpression);
var result = new EntityExpression(typeInfo, keyExpression, null, false);
if (keyFieldsOnly)
{
// Add key fields to field collection
var keyFieldClones = keyExpression
.KeyFields
.Select(kf => FieldExpression.CreateField(kf.Field, offset))
.Cast <PersistentFieldExpression>();
fields.AddRange(keyFieldClones);
}
else
{
foreach (var nestedField in typeInfo.Fields)
{
fields.Add(BuildNestedFieldExpression(nestedField, offset));
}
}
result.Fields = fields;
return(result);
}
public static KeyExpression Create(TypeInfo entityType, int offset)
{
var mapping = new Segment <int>(offset, entityType.Key.TupleDescriptor.Count);
var fields = entityType.Columns
.Where(c => c.IsPrimaryKey)
.OrderBy(c => c.Field.MappingInfo.Offset)
.Select(c => FieldExpression.CreateField(c.Field, offset))
.ToList()
.AsReadOnly();
return(new KeyExpression(entityType, fields, mapping, WellKnownMembers.IEntityKey, null, false));
}
// ReSharper disable RedundantNameQualifier
private static PersistentFieldExpression BuildNestedFieldExpression(FieldInfo nestedField, int offset)
{
if (nestedField.IsPrimitive)
{
return(FieldExpression.CreateField(nestedField, offset));
}
if (nestedField.IsStructure)
{
return(StructureFieldExpression.CreateStructure(nestedField, offset));
}
if (nestedField.IsEntity)
{
return(EntityFieldExpression.CreateEntityField(nestedField, offset));
}
throw new NotSupportedException(string.Format(Strings.ExNestedFieldXIsNotSupported, nestedField.Attributes));
}
public override Expression RemoveOuterParameter(Dictionary <Expression, Expression> processedExpressions)
{
Expression result;
if (processedExpressions.TryGetValue(this, out result))
{
return(result);
}
result = new FieldExpression(ExtendedExpressionType.Field, Field, Mapping, null, DefaultIfEmpty);
if (owner == null)
{
return(result);
}
processedExpressions.Add(this, result);
Owner.RemoveOuterParameter(processedExpressions);
return(result);
}
public override Expression Remap(int[] map, Dictionary <Expression, Expression> processedExpressions)
{
if (!CanRemap)
{
return(this);
}
Expression result;
if (processedExpressions.TryGetValue(this, out result))
{
return(result);
}
var offset = map.IndexOf(Mapping.Offset);
if (offset < 0)
{
if (owner == null && !SkipOwnerCheckScope.IsActive)
{
throw new InvalidOperationException(Strings.ExUnableToRemapFieldExpression);
}
processedExpressions.Add(this, null);
if (owner != null)
{
Owner.Remap(map, processedExpressions);
}
return(null);
}
var mapping = new Segment <int>(offset, Mapping.Length);
result = new FieldExpression(ExtendedExpressionType.Field, Field, mapping, OuterParameter, DefaultIfEmpty);
if (owner == null)
{
return(result);
}
processedExpressions.Add(this, result);
Owner.Remap(map, processedExpressions);
return(result);
}
public override Expression Remap(int[] map, Dictionary <Expression, Expression> processedExpressions)
{
if (!CanRemap)
{
return(this);
}
if (processedExpressions.TryGetValue(this, out var value))
{
return(value);
}
var segment = new Segment <int>(map.IndexOf(Mapping.Offset), Mapping.Length);
var fields = new FieldExpression[KeyFields.Count];
using (new SkipOwnerCheckScope()) {
for (var index = 0; index < fields.Length; index++)
{
var field = (FieldExpression)KeyFields[index].Remap(map, processedExpressions);
if (field == null)
{
if (SkipOwnerCheckScope.IsActive)
{
processedExpressions.Add(this, null);
return(null);
}
throw Exceptions.InternalError(Strings.ExUnableToRemapKeyExpression, OrmLog.Instance);
}
fields[index] = field;
}
}
var result = new KeyExpression(EntityType, fields, segment, UnderlyingProperty, OuterParameter, DefaultIfEmpty);
processedExpressions.Add(this, result);
return(result);
}
