protected static Entity create(EntityClass parent, entitySpec entitySpec, Type type, Action <string> log, bool throwOnCircularReference)
{
log?.Invoke($"create: {type.Name} - {entitySpec.name}");
if (!string.IsNullOrEmpty(entitySpec.aggregation))
{
return(new EntityAggregation(entitySpec, log));
}
if (!string.IsNullOrEmpty(entitySpec.formula))
{
return(new EntityFormula(entitySpec, log));
}
var fieldInfo = new LinkedFieldInfo(type, entitySpec.name);
if (fieldInfo.IEnumerable != null)
{
return(new EntityClass(parent, entitySpec, fieldInfo.IEnumerable.GetGenericArguments()[0], fieldInfo, log, throwOnCircularReference));
}
if (!entitySpec.AnyNotStar())
{
return(new EntityPlainField(entitySpec, fieldInfo, log));
}
throw new Exception("Unknown error");
}
public EntityPlainField(entitySpec entitySpec, LinkedFieldInfo fieldInfo, Action <string> log)
: base(entitySpec)
{
log?.Invoke($"EntityPlainField ctor: {entitySpec.name}/{entitySpec.fields?.Count ?? 0} - {fieldInfo.FieldType} ");
FieldInfo = fieldInfo;
FieldType = FieldInfo.FieldType;
}
public entitySpec Add(entitySpec entitySpec)
{
if (fields == null)
{
fields = new List <entitySpec>();
}
fields.Add(entitySpec);
return(this);
}
public DataExtract(Type type, entitySpec entitySpec, ITableManager tableManager = null, Action <string> log = null)
{
if (type == null)
{
throw new NullReferenceException(nameof(type));
}
if (entitySpec == null)
{
throw new NullReferenceException(nameof(entitySpec));
}
Type = type;
TopEntity = Entity.Create(null, entitySpec, Type, log);
TableManager = tableManager ?? new InMemoryTableManager();
}
public static EntityClass Create(EntityClass parent, entitySpec entitySpec, Type type, Action <string> log, bool throwOnCircularReference = true)
{
return(new EntityClass(
parent,
new entitySpec
{
name = entitySpec.name ?? type.Name,
externalname = entitySpec.externalname,
fields = entitySpec.fields,
where = entitySpec.where
},
type,
null,
log,
throwOnCircularReference));
}
public EntityAggregation(entitySpec entitySpec, Action <string> log)
: base(entitySpec)
{
if (string.IsNullOrEmpty(entitySpec.aggregationtype))
{
AggregationType = AggregationType.Sum;
}
else
{
AggregationType = (AggregationType)Enum.Parse(typeof(AggregationType), entitySpec.aggregationtype, true);
}
if (string.IsNullOrEmpty(entitySpec.formula))
{
return;
}
_evaluator = new EvaluateRpn(new Rpn(entitySpec.formula), new List <NameAndType>
{
new NameAndType("@", typeof(double))
});
}
public EntityClass(
EntityClass parent,
entitySpec entitySpec,
Type type,
LinkedFieldInfo fieldInfo,
Action <string> log,
bool throwOnCircularReference)
: base(entitySpec)
{
log?.Invoke(
$"EntityClass ctor: {entitySpec.name}/{entitySpec.fields?.Count ?? 0} - {type?.Name} - {fieldInfo?.FieldType} - {fieldInfo?.IEnumerable?.Name}");
TableName = parent != null && Spec.externalname == null
? string.Join("_", parent.TableName, ExternalName)
: ExternalName;
FieldInfo = fieldInfo;
FieldType = fieldInfo?.FieldType;
if (!Spec.Any() || isStarExpansionAndNoRealSubProperties(type))
{
// not sure if this should be allowed...
Fields.Add(new EntitySolitaire(type));
}
breakDownSubEntities(type, log, throwOnCircularReference);
// move the nosave fields to always be at the end of the list
var noSaveFields = Fields.Where(_ => _.NoSave).ToList();
Fields.RemoveAll(_ => _.NoSave);
SaveableFieldCount = Fields.Count;
Fields.AddRange(noSaveFields);
// this is temporary - to be able to serialze a contract with "*" since it was digging up so much garbage...
// need to investigae each "garbage" occurrence and handle it more elegantly
Fields.RemoveAll(_ => _ is EntityPlainField && SqlHelpers.Field2Sql(_.NameAndType.Name, _.NameAndType.Type, false, 0, true) == null);
Lists.RemoveAll(_ => !_.Fields.Any() && !_.Lists.Any());
if (Fields.Count(_ => _.Spec.primarykey) > 1)
{
throw new Exception("There may be no more than one primary key field");
}
PrimaryKeyIndex = Fields.FindIndex(_ => _.Spec.primarykey);
EffectiveFieldCount = Fields.Count + 1;
for (var fi = 0; fi < Fields.Count; fi++)
{
Fields[fi].ParentInitialized(this, fi);
}
for (var li = 0; li < Lists.Count; li++)
{
Lists[li].ParentInitialized(this, li);
}
for (var i = 0; i < Fields.Count; i++)
{
Fields[i].ResultSetIndex = i;
}
var fieldsThenFormulas = Fields.Where(_ => !(_ is EntityAggregation)).ToList();
SortWithFormulasLast(fieldsThenFormulas);
_fieldsThenNonAggregatedFormulas = fieldsThenFormulas.Where(_ => !_.IsBasedOnAggregation).ToArray();
_aggregatedFormulas = fieldsThenFormulas.Where(_ => _.IsBasedOnAggregation).ToArray();
if (!string.IsNullOrEmpty(Spec.where))
{
_whereClause = new WhereClause(Spec.where, Fields, _fieldsThenNonAggregatedFormulas);
}
if (PrimaryKeyIndex >= 0 && Fields[PrimaryKeyIndex].IsBasedOnAggregation)
{
throw new Exception($"The primary key must not be based on an aggregation (table '{TableName}')");
}
}
private static IEnumerable <Entity> expansionOverStar(
Action <string> log,
EntityClass parent,
Type masterType,
entitySpec subEntitySpec,
HashSet <Type> detectCircularRef,
bool throwOnCircularReference,
string prefix = "",
Type subType = null)
{
if (subEntitySpec.name != "*")
{
yield return(create(parent, subEntitySpec, masterType, log, throwOnCircularReference));
yield break;
}
subType = subType ?? masterType;
if (detectCircularRef.Contains(subType))
{
if (throwOnCircularReference)
{
throw new Exception("Circular reference detected while processing inclusion of all fields ('*')");
}
else
{
yield return(new EntityClass(parent, entitySpec.Begin(prefix.TrimEnd(".".ToCharArray())), masterType, null, log, true));
yield break;
}
}
detectCircularRef.Add(subType);
foreach (var nameAndType in LinkedFieldInfo.GetAllFieldsAndProperties(subType))
{
if (nameAndType.Type == typeof(object))
{
continue;
}
var spec = entitySpec.Begin(prefix + nameAndType.Name);
var subProperties = LinkedFieldInfo.GetAllFieldsAndProperties(nameAndType.Type);
if (LinkedFieldInfo.CheckForIEnumerable(nameAndType.Type) != null)
{
spec.Add("*");
yield return(create(parent, spec, masterType, log, throwOnCircularReference));
}
else if (!subProperties.Any())
{
yield return(create(parent, spec, masterType, log, throwOnCircularReference));
}
foreach (var liftedSubProperty in subProperties)
{
if (liftedSubProperty.Type == typeof(object))
{
continue;
}
var propName = $"{prefix}{nameAndType.Name}.{liftedSubProperty.Name}";
if (LinkedFieldInfo.GetAllFieldsAndProperties(liftedSubProperty.Type).Any())
{
foreach (var q in expansionOverStar(log, parent, masterType, "*", detectCircularRef, throwOnCircularReference, propName + ".", liftedSubProperty.Type))
{
yield return(q);
}
}
else
{
yield return(create(parent, entitySpec.Begin(propName).Add("*"), masterType, log, throwOnCircularReference));
}
//yield return create(propName, masterType, log);
}
}
detectCircularRef.Remove(subType);
}
public EntityFormula(entitySpec entitySpec, Action <string> log)
: base(entitySpec)
{
log?.Invoke($"EntityFormula ctor: {entitySpec.name}/{entitySpec.fields?.Count ?? 0} - {entitySpec.formula} ");
}
protected Entity(entitySpec entitySpec)
{
Spec = entitySpec;
NoSave = entitySpec.nosave;
}
