/// <summary>
/// Persists all pending transactions in <see cref="Oms.PendingTransactions" /> to the backing store.
/// </summary>
/// <param name="oms">Oms.</param>
/// <param name="path">Path.</param>
public static void Save(this Oms oms, string path)
{
string filename = System.IO.Path.Combine(new string[] { path, String.Format("{0}.mcx", DateTime.Now.ToString("s").Replace(':', '-')) });
string parentDirectory = System.IO.Path.GetDirectoryName(filename);
if (!System.IO.Directory.Exists(parentDirectory))
{
System.IO.Directory.CreateDirectory(parentDirectory);
}
MochaSnapshotObjectModel mcx = new MochaSnapshotObjectModel();
foreach (Transaction transaction in oms.PendingTransactions)
{
string tenantName = oms.GetTenantName(transaction.Tenant);
MochaSnapshotTransaction snapshotTransaction = new MochaSnapshotTransaction();
snapshotTransaction.TenantName = tenantName;
foreach (TransactionOperation op in transaction.Operations)
{
if (op is AssignAttributeTransactionOperation aa)
{
MochaSnapshotAssignAttributeTransactionOperation ssaa = new MochaSnapshotAssignAttributeTransactionOperation();
ssaa.SourceInstanceID = oms.GetInstanceID(aa.SourceInstance);
ssaa.AttributeInstanceID = oms.GetInstanceID(aa.AttributeInstance);
ssaa.EffectiveDate = aa.EffectiveDate;
ssaa.Value = aa.Value;
snapshotTransaction.Operations.Add(ssaa);
}
else if (op is AssociateRelationshipTransactionOperation ar)
{
MochaSnapshotAssociateRelationshipTransactionOperation ssar = new MochaSnapshotAssociateRelationshipTransactionOperation();
ssar.SourceInstanceID = oms.GetInstanceID(ar.SourceInstance);
ssar.RelationshipInstanceID = oms.GetInstanceID(ar.RelationshipInstance);
ssar.EffectiveDate = ar.EffectiveDate;
for (int i = 0; i < ar.TargetInstances.Length; i++)
{
ssar.TargetInstanceIDs.Add(oms.GetInstanceID(ar.TargetInstances[i]));
}
snapshotTransaction.Operations.Add(ssar);
}
else if (op is CreateInstanceTransactionOperation ci)
{
MochaSnapshotCreateInstanceTransactionOperation ssci = new MochaSnapshotCreateInstanceTransactionOperation();
ssci.GlobalIdentifier = ci.GlobalIdentifier;
ssci.ClassGlobalIdentifier = ci.ClassGlobalIdentifier;
snapshotTransaction.Operations.Add(ssci);
}
}
mcx.Transactions.Add(snapshotTransaction);
}
Document.Save(mcx, mcldf, new FileAccessor(filename, true, true));
oms.PendingTransactions.Clear();
}
protected override void AfterLoadInternal(Stack <ObjectModel> objectModels)
{
base.AfterLoadInternal(objectModels);
if (objectModels.Count < 2)
{
throw new ObjectModelNotSupportedException("must have a FileSystemObjectModel and a MochaClassLibraryObjectModel in the stack");
}
FileSystemObjectModel fsom = (objectModels.Pop() as FileSystemObjectModel);
if (fsom == null)
{
throw new ObjectModelNotSupportedException();
}
ObjectModel om = objectModels.Pop();
MochaSnapshotObjectModel mcx = (om as MochaSnapshotObjectModel);
MochaClassLibraryObjectModel mcl = (om as MochaClassLibraryObjectModel);
if (mcl == null && mcx == null)
{
throw new ObjectModelNotSupportedException();
}
List <Guid> _instanceGuids = new List <Guid>();
List <string> _stringTable = new List <string>();
LIBRARY_INFO[] library_info = null;
// COMMON TABLES
#region Guid Table
{
File fGlobalIdentifiers = fsom.FindFile("GlobalIdentifiers");
using (MemoryAccessor ma = new MemoryAccessor(fGlobalIdentifiers.GetData()))
{
int instanceCount = ma.Reader.ReadInt32();
for (int i = 0; i < instanceCount; i++)
{
_instanceGuids.Add(ma.Reader.ReadGuid());
}
}
}
#endregion
#region String Table
{
File f = fsom.FindFile("StringTable");
using (MemoryAccessor ma = new MemoryAccessor(f.GetData()))
{
int stringTableCount = ma.Reader.ReadInt32();
for (int i = 0; i < stringTableCount; i++)
{
string value = ma.Reader.ReadNullTerminatedString();
_stringTable.Add(value);
}
}
}
#endregion
// MCL-SPECIFIC
#region Libraries
File fLibraries = fsom.FindFile("Libraries");
if (mcl != null && fLibraries != null)
{
using (MemoryAccessor ma = new MemoryAccessor(fLibraries.GetData()))
{
int libraryCount = ma.Reader.ReadInt32();
library_info = new LIBRARY_INFO[libraryCount];
for (int i = 0; i < libraryCount; i++)
{
MochaLibrary library = new MochaLibrary();
library.ID = ma.Reader.ReadGuid();
library_info[i].instanceCount = ma.Reader.ReadInt32();
// library_info[i].attributeValueCount = ma.Reader.ReadInt32();
library_info[i].relationshipCount = ma.Reader.ReadInt32();
mcl.Libraries.Add(library);
}
}
}
else
{
Console.Error.WriteLine("mocha: mcl: error: ignoring 'Libraries' section found in non-mcl file");
}
#endregion
INSTANCE_INFO[] instance_info = null;
#region Instances
File fInstances = fsom.FindFile("Instances");
if (mcl != null && fInstances != null)
{
using (MemoryAccessor ma = new MemoryAccessor(fInstances.GetData()))
{
for (int i = 0; i < mcl.Libraries.Count; i++)
{
int instanceCount = ma.Reader.ReadInt32();
instance_info = new INSTANCE_INFO[instanceCount];
for (int j = 0; j < instanceCount; j++)
{
instance_info[j].instanceIndex = ma.Reader.ReadInt32();
instance_info[j].attributeValueCount = ma.Reader.ReadInt32();
MochaInstanceFlags flags = (MochaInstanceFlags)ma.Reader.ReadInt32();
int?index = null;
if ((flags & MochaInstanceFlags.HasIndex) == MochaInstanceFlags.HasIndex)
{
index = ma.Reader.ReadInt32();
}
MochaInstance inst = new MochaInstance();
inst.ID = _instanceGuids[instance_info[j].instanceIndex];
inst.Index = index;
mcl.Libraries[i].Instances.Add(inst);
}
}
}
}
else
{
Console.Error.WriteLine("mocha: mcl: error: ignoring 'Instances' section found in non-mcl file");
}
#endregion
#region Attributes
File fAttributes = fsom.FindFile("Attributes");
if (mcl != null && fAttributes != null)
{
using (MemoryAccessor ma = new MemoryAccessor(fAttributes.GetData()))
{
for (int i = 0; i < mcl.Libraries.Count; i++)
{
for (int j = 0; j < mcl.Libraries[i].Instances.Count; j++)
{
for (int k = 0; k < instance_info[j].attributeValueCount; k++)
{
int attributeInstanceIndex = ma.Reader.ReadInt32();
MochaAttributeValue val = new MochaAttributeValue();
val.AttributeInstanceID = _instanceGuids[attributeInstanceIndex];
MochaAttributeType attributeType = (MochaAttributeType)ma.Reader.ReadInt32();
switch (attributeType)
{
case MochaAttributeType.None: break;
case MochaAttributeType.Text:
{
int stringTableIndex = ma.Reader.ReadInt32();
string value = _stringTable[stringTableIndex];
val.Value = value;
break;
}
case MochaAttributeType.Boolean:
{
bool value = ma.Reader.ReadBoolean();
val.Value = value;
break;
}
case MochaAttributeType.Date:
{
DateTime value = ma.Reader.ReadDateTime();
val.Value = value;
break;
}
case MochaAttributeType.Unknown:
{
break;
}
}
mcl.Libraries[i].Instances[j].AttributeValues.Add(val);
}
}
}
}
}
else
{
Console.Error.WriteLine("mocha: mcl: error: ignoring 'Attributes' section found in non-mcl file");
}
#endregion
#region Relationships
File fRelationships = fsom.FindFile("Relationships");
if (mcl != null && fRelationships != null)
{
using (MemoryAccessor ma = new MemoryAccessor(fRelationships.GetData()))
{
for (int i = 0; i < mcl.Libraries.Count; i++)
{
for (int j = 0; j < library_info[i].relationshipCount; j++)
{
int relationshipIndex = ma.Reader.ReadInt32();
int sourceInstanceIndex = ma.Reader.ReadInt32();
MochaRelationship rel = new MochaRelationship();
rel.RelationshipInstanceID = _instanceGuids[relationshipIndex];
rel.SourceInstanceID = _instanceGuids[sourceInstanceIndex];
int targetInstanceCount = ma.Reader.ReadInt32();
for (int k = 0; k < targetInstanceCount; k++)
{
int instanceIndex = ma.Reader.ReadInt32();
rel.DestinationInstanceIDs.Add(_instanceGuids[instanceIndex]);
}
mcl.Libraries[i].Relationships.Add(rel);
}
}
}
}
else
{
Console.Error.WriteLine("mocha: mcl: error: ignoring 'Relationships' section found in non-mcl file");
}
#endregion
#region Tenants
File fTenants = fsom.FindFile("Tenants");
if (mcl != null && fTenants != null)
{
using (MemoryAccessor ma = new MemoryAccessor(fTenants.GetData()))
{
int tenantCount = ma.Reader.ReadInt32();
for (int i = 0; i < tenantCount; i++)
{
int instanceIndex = ma.Reader.ReadInt32();
Guid instanceGuid = _instanceGuids[instanceIndex];
int tenantNameIndex = ma.Reader.ReadInt32();
string tenantName = _stringTable[tenantNameIndex];
MochaTenant tenant = new MochaTenant();
tenant.ID = instanceGuid;
tenant.Name = tenantName;
int libraryReferenceCount = ma.Reader.ReadInt32();
for (int j = 0; j < libraryReferenceCount; j++)
{
int libraryIndex = ma.Reader.ReadInt32();
Guid libraryID = _instanceGuids[libraryIndex];
tenant.LibraryReferences.Add(new MochaLibraryReference(libraryID));
}
int instanceCount = ma.Reader.ReadInt32();
for (int j = 0; j < instanceCount; j++)
{
int instanceIndex2 = ma.Reader.ReadInt32();
MochaInstance inst = new MochaInstance();
inst.ID = _instanceGuids[instanceIndex2];
tenant.Instances.Add(inst);
}
int relationshipCount = ma.Reader.ReadInt32();
for (int j = 0; j < relationshipCount; j++)
{
int sourceInex = ma.Reader.ReadInt32();
Guid ssource = _instanceGuids[sourceInex];
int relationshipInex = ma.Reader.ReadInt32();
Guid relati = _instanceGuids[relationshipInex];
MochaRelationship rel = new MochaRelationship();
rel.SourceInstanceID = ssource;
rel.RelationshipInstanceID = relati;
int count = ma.Reader.ReadInt32();
for (int k = 0; k < count; k++)
{
int targetIndex = ma.Reader.ReadInt32();
Guid targ = _instanceGuids[targetIndex];
rel.DestinationInstanceIDs.Add(targ);
}
tenant.Relationships.Add(rel);
}
mcl.Tenants.Add(tenant);
}
ma.Close();
fTenants.SetData(ma.ToArray());
}
}
else
{
Console.Error.WriteLine("mocha: mcl: error: ignoring 'Tenants' section found in non-mcl file");
}
#endregion
#region Journal
// journal is present in MCX / MCD (application, data files)
// is an opcode based format
// eg. 0x01 = create instance, 0x02 = delete instance
// 0x04 = set attribute value, 0x05 = delete attribute value
// 0x08 = create relationship, 0x09 = remove relationship
File fJournal = fsom.FindFile("Journal");
if (mcx != null && fJournal != null)
{
using (MemoryAccessor ma = new MemoryAccessor(fJournal.GetData()))
{
MochaSnapshotTransaction currentTransaction = null;
while (!ma.Reader.EndOfStream)
{
MochaOpcode opcode = (MochaOpcode)ma.Reader.ReadByte();
switch (opcode)
{
case MochaOpcode.BeginTransaction:
{
currentTransaction = new MochaSnapshotTransaction();
currentTransaction.TenantName = _stringTable[ma.Reader.ReadInt32()];
break;
}
case MochaOpcode.EndTransaction:
{
mcx.Transactions.Add(currentTransaction);
currentTransaction = null;
break;
}
case MochaOpcode.CreateInstance:
{
DateTime effectiveDate = ma.Reader.ReadDateTime();
int guidIndex = ma.Reader.ReadInt32();
int classGuidIndex = ma.Reader.ReadInt32();
MochaSnapshotCreateInstanceTransactionOperation op = new MochaSnapshotCreateInstanceTransactionOperation();
op.GlobalIdentifier = _instanceGuids[guidIndex];
op.ClassGlobalIdentifier = _instanceGuids[classGuidIndex];
op.EffectiveDate = effectiveDate;
currentTransaction.Operations.Add(op);
break;
}
case MochaOpcode.CreateRelationship:
case MochaOpcode.RemoveRelationship:
{
DateTime effectiveDate = ma.Reader.ReadDateTime();
int sourceInstanceIndex = ma.Reader.ReadInt32();
int relationshipIndex = ma.Reader.ReadInt32();
int targetInstanceCount = ma.Reader.ReadInt32();
MochaSnapshotAssociateRelationshipTransactionOperation rel = new MochaSnapshotAssociateRelationshipTransactionOperation();
rel.RelationshipInstanceID = _instanceGuids[relationshipIndex];
rel.SourceInstanceID = _instanceGuids[sourceInstanceIndex];
rel.EffectiveDate = effectiveDate;
for (int k = 0; k < targetInstanceCount; k++)
{
int instanceIndex = ma.Reader.ReadInt32();
rel.TargetInstanceIDs.Add(_instanceGuids[instanceIndex]);
}
if (opcode == MochaOpcode.RemoveRelationship)
{
rel.Remove = true;
}
currentTransaction.Operations.Add(rel);
break;
}
case MochaOpcode.AssignAttribute:
{
DateTime effectiveDate = ma.Reader.ReadDateTime();
int instanceIndex = ma.Reader.ReadInt32();
Guid instanceID = _instanceGuids[instanceIndex];
int attributeIndex = ma.Reader.ReadInt32();
Guid attributeInstanceID = _instanceGuids[attributeIndex];
object value = ReadMochaValue(ma.Reader, _stringTable);
MochaSnapshotAssignAttributeTransactionOperation mav = new MochaSnapshotAssignAttributeTransactionOperation();
mav.SourceInstanceID = instanceID;
mav.AttributeInstanceID = attributeInstanceID;
mav.EffectiveDate = effectiveDate;
mav.Value = value;
currentTransaction.Operations.Add(mav);
break;
}
}
}
}
}
else
{
Console.Error.WriteLine("mocha: mcl: error: ignoring 'Journal' section found in non-mcx file");
}
#endregion
}
