/// <summary>
/// Initializes a new instance of the <see cref="VowpalWabbit{TExample}"/> class.
/// </summary>
/// <param name="vw">The native instance to wrap.</param>
/// <remarks>This instance takes ownership of <paramref name="vw"/> instance and disposes it.</remarks>
public VowpalWabbit(VowpalWabbit vw)
{
if (vw == null)
{
throw new ArgumentNullException("vw");
}
Contract.Ensures(this.serializer != null);
Contract.EndContractBlock();
this.vw = vw;
this.compiledSerializer = VowpalWabbitSerializerFactory.CreateSerializer <TExample>(vw.Settings);
if (this.compiledSerializer == null)
{
throw new ArgumentException("No features found for " + typeof(TExample));
}
this.serializer = this.compiledSerializer.Create(vw);
// have a 2nd member to throw NullReferenceException in release instead of silently producing wrong results.
this.learnSerializer = this.serializer.CachesExamples ? null : this.serializer;
// have a 3rd member to avoid cast everytime...
this.singleLineSerializer = this.serializer as VowpalWabbitSingleExampleSerializer <TExample>;
}
/// <summary>
/// Constructor using a memory stream.
/// </summary>
/// <param name="vwModelStream">The VW model memory stream.</param>
public VWExplorer(Stream vwModelStream = null, ITypeInspector typeInspector = null, bool developmentMode = false)
: base(vwModelStream, typeInspector, developmentMode)
{
this.serializer = VowpalWabbitSerializerFactory.CreateSerializer <TContext>(new VowpalWabbitSettings
{
TypeInspector = this.typeInspector,
EnableStringExampleGeneration = this.developmentMode,
EnableStringFloatCompact = this.developmentMode
});
this.multiSerializer = this.serializer as IVowpalWabbitMultiExampleSerializerCompiler <TContext>;
}
/// <summary>
/// Initializes a new instance of the <see cref="VowpalWabbit{TExample}"/> class.
/// </summary>
/// <param name="vw">The native instance to wrap.</param>
/// <param name="compiledSerializer">The per-compiled serializer.</param>
/// <remarks>This instance takes ownership of <paramref name="vw"/> instance and disposes it.</remarks>
public VowpalWabbit(VowpalWabbit vw, IVowpalWabbitSerializerCompiler <TExample> compiledSerializer)
{
if (vw == null)
{
throw new ArgumentNullException(nameof(vw));
}
if (compiledSerializer == null)
{
throw new ArgumentNullException(nameof(compiledSerializer));
}
Contract.Ensures(this.serializer != null);
Contract.EndContractBlock();
this.vw = vw;
this.compiledSerializer = compiledSerializer;
this.serializer = this.compiledSerializer.Create(vw);
// have a 2nd member to throw NullReferenceException in release instead of silently producing wrong results.
this.learnSerializer = this.serializer.CachesExamples ? null : this.serializer;
// have a 3rd member to avoid cast everytime...
this.singleLineSerializer = this.serializer as VowpalWabbitSingleExampleSerializer <TExample>;
}
