internal async Task <bool> SaveFieldValueAsync(int oid, string field, SqoTypeInfo ti, object value, RawdataSerializer rawSerializer)
{
long position = MetaHelper.GetSeekPosition(ti, oid);
int recordLength = ti.Header.lengthOfRecord;
FieldSqoInfo ai = FindField(ti.Fields, field);
if (ai == null)
{
throw new SiaqodbException("Field:" + field + " not exists in the Type Definition, if you use a Property you have to use UseVariable Attribute");
}
else if (value != null && ai.AttributeType != value.GetType())
{
try
{
object valConvert = Convertor.ChangeType(value, ai.AttributeType);
value = valConvert;
}
catch
{
string msg = "Type of value should be:" + ai.AttributeType.ToString();
SiaqodbConfigurator.LogMessage(msg, VerboseLevel.Error);
throw new SiaqodbException(msg);
}
}
byte[] by = null;
IByteTransformer byteTransformer = ByteTransformerFactory.GetByteTransformer(this, rawSerializer, ai, ti, oid);
by = await byteTransformer.GetBytesAsync(value).ConfigureAwait(false);
await file.WriteAsync((long)(position + (long)ai.Header.PositionInRecord), by).ConfigureAwait(false);
return(true);
}
internal async Task <byte[]> GetObjectBytesAsync(ObjectInfo oi, RawdataSerializer rawSerializer)
{
byte[] oidBuff = ByteConverter.IntToByteArray(oi.Oid);
byte[] buffer = new byte[oi.SqoTypeInfo.Header.lengthOfRecord];
int curentIndex = 0;
Array.Copy(oidBuff, 0, buffer, curentIndex, oidBuff.Length);
curentIndex += oidBuff.Length;
bool oidToParentSet = false;
foreach (FieldSqoInfo ai in oi.AtInfo.Keys)
{
byte[] by = null;
if (ai.AttributeTypeId == MetaExtractor.complexID || ai.AttributeTypeId == (MetaExtractor.ArrayTypeIDExtra + MetaExtractor.complexID) || ai.AttributeTypeId == MetaExtractor.documentID)
{
//to be able to cache for circular reference, we need to asign OID to it
if (!oidToParentSet)
{
//just set OID to parentObject, do not save anything
ComplexObjectEventArgs args = new ComplexObjectEventArgs(true, oi);
await this.OnNeedSaveComplexObjectAsync(args).ConfigureAwait(false);
oidToParentSet = true;
}
}
int parentOID = -1;
if (!oi.Inserted)
{
parentOID = oi.Oid;
}
IByteTransformer byteTransformer = ByteTransformerFactory.GetByteTransformer(this, rawSerializer, ai, oi.SqoTypeInfo, parentOID);
by = await byteTransformer.GetBytesAsync(oi.AtInfo[ai]).ConfigureAwait(false);
Array.Copy(by, 0, buffer, curentIndex, by.Length);
curentIndex += by.Length;
}
return(buffer);
}
public async Task <object> ReadFieldValueAsync(SqoTypeInfo ti, int oid, FieldSqoInfo fi, RawdataSerializer rawSerializer)
{
long position = MetaHelper.GetSeekPosition(ti, oid);
int recordLength = ti.Header.lengthOfRecord;
if (fi == null)
{
throw new SiaqodbException("Field not exists in the Type Definition, if you use a Property you have to use UseVariable Attribute");
}
byte[] b = new byte[fi.Header.Length];
if (oidEnd == 0 && oidStart == 0)
{
await file.ReadAsync((long)(position + (long)fi.Header.PositionInRecord), b).ConfigureAwait(false);
}
else
{
int fieldPosition = (oid - oidStart) * recordLength + fi.Header.PositionInRecord;
Array.Copy(preloadedBytes, fieldPosition, b, 0, b.Length);
}
IByteTransformer byteTransformer = ByteTransformerFactory.GetByteTransformer(this, rawSerializer, fi, ti);
try
{
return(await byteTransformer.GetObjectAsync(b).ConfigureAwait(false));
}
catch (Exception ex)
{
if (ti.Type != null && ti.Type.IsGenericType() && ti.Type.GetGenericTypeDefinition() == typeof(Indexes.BTreeNode <>))
{
throw new IndexCorruptedException();
}
//SiaqodbConfigurator.LogMessage("Field's" + fi.Name + " value of Type " + ti.TypeName + "cannot be loaded,will be set to default.", VerboseLevel.Info);
// return MetaHelper.GetDefault(fi.AttributeType);
throw ex;
}
}
internal async Task SaveObjectTableAsync(SqoTypeInfo actualTypeinfo, SqoTypeInfo oldSqoTypeInfo, ObjectTable table, RawdataSerializer rawSerializer)
{
Dictionary <FieldSqoInfo, FieldSqoInfo> joinedFields = JoinFieldsSqoInfo(actualTypeinfo, oldSqoTypeInfo);
foreach (ObjectRow row in table.Rows)
{
int oid = (int)row["OID"];
if (oid < 0)//deleted
{
await this.MarkObjectAsDeleteAsync(-oid, actualTypeinfo).ConfigureAwait(false);
continue;
}
byte[] oidBuff = ByteConverter.IntToByteArray(oid);
byte[] buffer = new byte[actualTypeinfo.Header.lengthOfRecord];
int curentIndex = 0;
Array.Copy(oidBuff, 0, buffer, curentIndex, oidBuff.Length);
curentIndex += oidBuff.Length;
foreach (FieldSqoInfo ai in actualTypeinfo.Fields)
{
byte[] by = null;
object fieldVal = null;
bool existed = false;
if (table.Columns.ContainsKey(ai.Name))
{
fieldVal = row[ai.Name];
existed = true;
}
else
{
if (ai.AttributeTypeId == MetaExtractor.complexID || ai.AttributeTypeId == MetaExtractor.documentID)
{
fieldVal = null;
}
else if (typeof(string) == ai.AttributeType)
{
fieldVal = string.Empty;
}
else if (ai.AttributeType.IsArray)
{
fieldVal = Array.CreateInstance(ai.AttributeType.GetElementType(), 0);
}
else
{
fieldVal = Activator.CreateInstance(ai.AttributeType);
}
}
if (joinedFields[ai] != null) //existed in old Type
{
if (ai.AttributeTypeId != joinedFields[ai].AttributeTypeId)
{
if (typeof(IList).IsAssignableFrom(ai.AttributeType) || ai.AttributeTypeId == MetaExtractor.dictionaryID || joinedFields[ai].AttributeTypeId == MetaExtractor.dictionaryID)
{
throw new TypeChangedException("Change array or dictionary type it is not supported");
}
else
{
fieldVal = Convertor.ChangeType(fieldVal, ai.AttributeType);
}
}
}
if (ai.AttributeTypeId == MetaExtractor.complexID || ai.AttributeTypeId == MetaExtractor.documentID)
{
if (existed)
{
by = (byte[])fieldVal;
}
else
{
by = await this.GetComplexObjectBytesAsync(fieldVal).ConfigureAwait(false);
}
}
else if (typeof(IList).IsAssignableFrom(ai.AttributeType))//array
{
if (existed)
{
by = (byte[])fieldVal;
}
else
{
by = await rawSerializer.SerializeArrayAsync(fieldVal, ai.AttributeType, ai.Header.Length, ai.Header.RealLength, actualTypeinfo.Header.version, null, this, ai.IsText).ConfigureAwait(false);
}
}
else if (ai.IsText)
{
if (existed)
{
FieldSqoInfo oldAi = joinedFields[ai];
if (oldAi != null && oldAi.IsText)
{
by = (byte[])fieldVal;
}
else
{
by = await rawSerializer.SerializeArrayAsync(fieldVal, ai.AttributeType, ai.Header.Length, ai.Header.RealLength, actualTypeinfo.Header.version, null, this, ai.IsText).ConfigureAwait(false);
}
}
else
{
by = await rawSerializer.SerializeArrayAsync(fieldVal, ai.AttributeType, ai.Header.Length, ai.Header.RealLength, actualTypeinfo.Header.version, null, this, ai.IsText).ConfigureAwait(false);
}
}
else if (ai.AttributeTypeId == MetaExtractor.dictionaryID)
{
if (existed)
{
by = (byte[])fieldVal;
}
else
{
IByteTransformer byteTransformer = ByteTransformerFactory.GetByteTransformer(this, rawSerializer, ai, actualTypeinfo, 0);
by = await byteTransformer.GetBytesAsync(fieldVal).ConfigureAwait(false);
}
}
else
{
by = ByteConverter.SerializeValueType(fieldVal, ai.AttributeType, ai.Header.Length, ai.Header.RealLength, actualTypeinfo.Header.version);
}
Array.Copy(by, 0, buffer, ai.Header.PositionInRecord, ai.Header.Length);
//curentIndex += by.Length;
}
long position = MetaHelper.GetSeekPosition(actualTypeinfo, oid);
await file.WriteAsync(position, buffer).ConfigureAwait(false);
}
}
public void ReadObject(object obj, SqoTypeInfo ti, int oid, RawdataSerializer rawSerializer)
{
//long position = (long)ti.Header.headerSize + (long)((long)(oid - 1) * (long)ti.Header.lengthOfRecord);
long position = MetaHelper.GetSeekPosition(ti, oid);
int recordLength = ti.Header.lengthOfRecord;
byte[] b = new byte[recordLength];
if (oidEnd == 0 && oidStart == 0)
{
file.Read(position, b);
}
else
{
int recordPosition = (oid - oidStart) * recordLength;
Array.Copy(preloadedBytes, recordPosition, b, 0, b.Length);
}
int fieldPosition = 0;
byte[] oidBuff = GetFieldBytes(b, fieldPosition, 4);
int oidFromFile = ByteConverter.ByteArrayToInt(oidBuff);
//eventual make comparison
foreach (FieldSqoInfo ai in ti.Fields)
{
byte[] field = GetFieldBytes(b, ai.Header.PositionInRecord, ai.Header.Length);
IByteTransformer byteTransformer = ByteTransformerFactory.GetByteTransformer(this, rawSerializer, ai, ti);
object fieldVal = null;
try
{
fieldVal = byteTransformer.GetObject(field);
}
catch (Exception ex)
{
if (ti.Type != null && ti.Type.IsGenericType() && ti.Type.GetGenericTypeDefinition() == typeof(Indexes.BTreeNode <>))
{
throw new IndexCorruptedException();
}
// SiaqodbConfigurator.LogMessage("Field's" + ai.Name + " value of Type " + ti.TypeName + "cannot be loaded, will be set to default.", VerboseLevel.Info);
//fieldVal = MetaHelper.GetDefault(ai.AttributeType);
throw ex;
}
if (ai.AttributeTypeId == MetaExtractor.documentID)
{
DocumentInfo dinfo = fieldVal as DocumentInfo;
if (dinfo != null)
{
if (SiaqodbConfigurator.DocumentSerializer == null)
{
throw new SiaqodbException("Document serializer is not set, use SiaqodbConfigurator.SetDocumentSerializer method to set it");
}
fieldVal = SiaqodbConfigurator.DocumentSerializer.Deserialize(ai.AttributeType, dinfo.Document);
//put in weak cache to be able to update the document
DocumentEventArgs args = new DocumentEventArgs();
args.ParentObject = obj;
args.DocumentInfoOID = dinfo.OID;
args.FieldName = ai.Name;
args.TypeInfo = ti;
this.OnNeedCacheDocument(args);
}
}
#if SILVERLIGHT
try
{
//dobj.SetValue(ai.FInfo, ByteConverter.DeserializeValueType(ai.FInfo.FieldType, field));
MetaHelper.CallSetValue(ai.FInfo, fieldVal, obj, ti.Type);
}
catch (Exception ex)
{
throw new SiaqodbException("Override GetValue and SetValue methods of SqoDataObject-Silverlight limitation to private fields");
}
#else
ai.FInfo.SetValue(obj, fieldVal);
#endif
}
}