/// <summary>
/// Initializes a new instance of <see cref="VowpalWabbitJsonBuilder"/>.
/// </summary>
public VowpalWabbitJsonBuilder(VowpalWabbitJsonSerializer serializer, IVowpalWabbitExamplePool vwPool, VowpalWabbitDefaultMarshaller defaultMarshaller, JsonSerializer jsonSerializer, int multiIndex = -1)
{
Contract.Requires(serializer != null);
Contract.Requires(vw != null);
Contract.Requires(defaultMarshaller != null);
Contract.Requires(jsonSerializer != null);
this.extensionState = new VowpalWabbitJsonParseState
{
JsonBuilder = this,
VW = vwPool.Native,
MultiIndex = multiIndex
};
this.namespaceStrings = new List <string>();
this.foundMulti = false;
if (serializer != null)
{
this.referenceResolver = serializer.ReferenceResolver;
}
this.serializer = serializer;
this.vw = vwPool.Native;
this.defaultMarshaller = defaultMarshaller;
this.jsonSerializer = jsonSerializer;
this.DefaultNamespaceContext = new VowpalWabbitMarshalContext(this.vw);
}
private bool HandleMultiProperty(VowpalWabbitJsonParseState state, string property)
{
var multiPropertyName = this.vwPool.Native.Settings.PropertyConfiguration.MultiProperty;
if (!property.Equals(multiPropertyName, StringComparison.OrdinalIgnoreCase))
{
return(false);
}
var reader = state.Reader;
if (!reader.Read() || reader.TokenType != JsonToken.StartArray)
{
throw new VowpalWabbitJsonException(reader, "Expected start array for '" + multiPropertyName + "'");
}
if (this.ExampleBuilders == null)
{
this.ExampleBuilders = new List <VowpalWabbitJsonBuilder>();
}
state.MultiIndex = 0;
while (reader.Read())
{
switch (reader.TokenType)
{
case JsonToken.StartObject:
VowpalWabbitJsonBuilder builder = null;
try
{
builder = new VowpalWabbitJsonBuilder(this, this.vwPool, VowpalWabbitDefaultMarshaller.Instance, this.jsonSerializer, state.MultiIndex);
this.ExampleBuilders.Add(builder);
}
catch (Exception)
{
builder.Dispose();
throw;
}
// pass the label to the selected example
builder.Parse(reader, index != null && index == this.ExampleBuilders.Count - 1 ? label : null, this.extensions);
state.MultiIndex++;
break;
case JsonToken.EndArray:
return(true);
default:
throw new VowpalWabbitJsonException(reader, "Unexpected token: " + reader.TokenType);
}
}
throw new VowpalWabbitJsonException(reader, "Unexpected end");
}
private bool HandleMultiProperty(VowpalWabbitJsonParseState state, string property)
{
var multiPropertyName = this.vwPool.Native.Settings.PropertyConfiguration.MultiProperty;
if (!property.Equals(multiPropertyName, StringComparison.OrdinalIgnoreCase))
return false;
var reader = state.Reader;
if (!reader.Read() || reader.TokenType != JsonToken.StartArray)
throw new VowpalWabbitJsonException(reader, "Expected start array for '" + multiPropertyName + "'");
if (this.ExampleBuilders == null)
this.ExampleBuilders = new List<VowpalWabbitJsonBuilder>();
while (reader.Read())
{
switch (reader.TokenType)
{
case JsonToken.StartObject:
VowpalWabbitJsonBuilder builder = null;
try
{
builder = new VowpalWabbitJsonBuilder(this, this.vwPool, VowpalWabbitDefaultMarshaller.Instance, this.jsonSerializer);
this.ExampleBuilders.Add(builder);
}
catch (Exception)
{
builder.Dispose();
throw;
}
// pass the label to the selected example
builder.Parse(reader, index != null && index == this.ExampleBuilders.Count - 1 ? label : null, this.extensions);
break;
case JsonToken.EndArray:
return true;
default:
throw new VowpalWabbitJsonException(reader, "Unexpected token: " + reader.TokenType);
}
}
throw new VowpalWabbitJsonException(reader, "Unexpected end");
}
/// <summary>
/// Initializes a new instance of <see cref="VowpalWabbitJsonBuilder"/>.
/// </summary>
public VowpalWabbitJsonBuilder(VowpalWabbitJsonSerializer serializer, IVowpalWabbitExamplePool vwPool, VowpalWabbitDefaultMarshaller defaultMarshaller, JsonSerializer jsonSerializer)
{
Contract.Requires(serializer != null);
Contract.Requires(vw != null);
Contract.Requires(defaultMarshaller != null);
Contract.Requires(jsonSerializer != null);
this.extensionState = new VowpalWabbitJsonParseState
{
JsonBuilder = this,
VW = vwPool.Native
};
this.namespaceStrings = new List<string>();
this.foundMulti = false;
this.referenceResolver = serializer.ReferenceResolver;
this.serializer = serializer;
this.vw = vwPool.Native;
this.defaultMarshaller = defaultMarshaller;
this.jsonSerializer = jsonSerializer;
this.DefaultNamespaceContext = new VowpalWabbitMarshalContext(this.vw);
}
