/// <summary>
/// Creates a new <see cref="DataSet"/> from the binary reader provided.
/// </summary>
/// <param name="dataSet">The data set to be loaded with data from the reader</param>
/// <param name="reader">
/// Reader connected to the source data structure and positioned to start reading
/// </param>
/// <param name="init">
/// True to indicate that the data set should be fulling initialised
/// </param>
/// <para>
/// A <see cref="DataSet"/> is constructed using the reader to retrieve
/// the header information. This is then passed to the Read methods to create the
/// lists before reading the data into memory. Finally it initialise is required
/// references between entities are worked out and stored.
/// </para>
internal static void Load(DataSet dataSet, Reader reader, bool init)
{
CommonFactory.LoadHeader(dataSet, reader);
var strings = new MemoryVariableList<AsciiString<DataSet>, DataSet>(dataSet, reader, new MemoryAsciiStringFactory());
MemoryFixedList<Component, DataSet> components = null;
switch(dataSet.VersionEnum)
{
case BinaryConstants.FormatVersions.PatternV31:
components = new MemoryFixedList<Component, DataSet>(dataSet, reader, new ComponentFactoryV31());
break;
case BinaryConstants.FormatVersions.PatternV32:
components = new MemoryFixedList<Component, DataSet>(dataSet, reader, new ComponentFactoryV32());
break;
}
var maps = new MemoryFixedList<Map, DataSet>(dataSet, reader, new MapFactory());
var properties = new PropertiesList(dataSet, reader, new PropertyFactory());
var values = new MemoryFixedList<Value, DataSet>(dataSet, reader, new ValueFactory<DataSet>());
var profiles = new MemoryVariableList<Entities.Profile, DataSet>(dataSet, reader, new ProfileMemoryFactory());
MemoryFixedList<Signature, DataSet> signatures = null;
MemoryIntegerList signatureNodeOffsets = null;
MemoryIntegerList nodeRankedSignatureIndexes = null;
switch(dataSet.VersionEnum)
{
case BinaryConstants.FormatVersions.PatternV31:
signatures = new MemoryFixedList<Signature, DataSet>(dataSet, reader, new SignatureFactoryV31<DataSet>(dataSet));
break;
case BinaryConstants.FormatVersions.PatternV32:
signatures = new MemoryFixedList<Signature, DataSet>(dataSet, reader, new SignatureFactoryV32<DataSet>(dataSet));
signatureNodeOffsets = new MemoryIntegerList(reader);
nodeRankedSignatureIndexes = new MemoryIntegerList(reader);
break;
}
var rankedSignatureIndexes = new MemoryIntegerList(reader);
MemoryVariableList<Entities.Node, DataSet> nodes = null;
switch (dataSet.VersionEnum)
{
case BinaryConstants.FormatVersions.PatternV31:
nodes = new MemoryVariableList<Entities.Node, DataSet>(dataSet, reader, new NodeMemoryFactoryV31());
break;
case BinaryConstants.FormatVersions.PatternV32:
nodes = new MemoryVariableList<Entities.Node, DataSet>(dataSet, reader, new NodeMemoryFactoryV32());
break;
}
var rootNodes = new MemoryFixedList<Entities.Node, DataSet>(dataSet, reader, new RootNodeFactory());
var profileOffsets = new MemoryFixedList<ProfileOffset, DataSet>(dataSet, reader, new ProfileOffsetFactory());
dataSet.Strings = strings;
dataSet._components = components;
dataSet._maps = maps;
dataSet._properties = properties;
dataSet._values = values;
dataSet.Profiles = profiles;
dataSet._signatures = signatures;
dataSet._rankedSignatureIndexes = rankedSignatureIndexes;
switch (dataSet.VersionEnum)
{
case BinaryConstants.FormatVersions.PatternV32:
dataSet._signatureNodeOffsets = signatureNodeOffsets;
dataSet._nodeRankedSignatureIndexes = nodeRankedSignatureIndexes;
break;
}
dataSet.Nodes = nodes;
dataSet.RootNodes = rootNodes;
dataSet._profileOffsets = profileOffsets;
strings.Read(reader);
components.Read(reader);
maps.Read(reader);
properties.Read(reader);
values.Read(reader);
profiles.Read(reader);
signatures.Read(reader);
switch (dataSet.VersionEnum)
{
case BinaryConstants.FormatVersions.PatternV32:
signatureNodeOffsets.Read(reader);
nodeRankedSignatureIndexes.Read(reader);
break;
}
rankedSignatureIndexes.Read(reader);
nodes.Read(reader);
rootNodes.Read(reader);
profileOffsets.Read(reader);
if (init)
{
// Set references between objects.
dataSet.Init();
// The following lists will not be needed anymore
// so they can be freed.
dataSet._signatureNodeOffsets = null;
dataSet._nodeRankedSignatureIndexes = null;
// Force garbage collection as a lot of memory has been freed.
GC.Collect();
}
}
