public SectionTokenStream(TokenStream tokenStream, int sectionId)
: base(tokenStream)
{
// NOTE: Calling the AddAttribute<T> method failed, so
// switched to using AddAttributeImpl.
_payloadAtt = new PayloadAttribute();
AddAttributeImpl(_payloadAtt);
_payload = EncodeIntPayload(sectionId);
}
public override object Clone()
{
PayloadAttribute clone = (PayloadAttribute)base.Clone();
if (payload != null)
{
clone.payload = (BytesRef)payload.Clone();
}
return(clone);
}
public IntMetaDataTokenStream(string tokenText)
{
_tokenText = tokenText;
// NOTE: Calling the AddAttribute<T> method failed, so
// switched to using AddAttributeImpl.
_termAttribute = new TermAttribute();
_offsetAttribute = new OffsetAttribute();
_payloadAtt = new PayloadAttribute();
base.AddAttributeImpl(_termAttribute);
base.AddAttributeImpl(_offsetAttribute);
base.AddAttributeImpl(_payloadAtt);
}
public override bool Equals(System.Object other)
{
if (other == this)
{
return(true);
}
if (other is IPayloadAttribute)
{
PayloadAttribute o = (PayloadAttribute)other;
if (o.payload == null || payload == null)
{
return(o.payload == null && payload == null);
}
return(o.payload.Equals(payload));
}
return(false);
}
public virtual void TestPayloadAttribute()
{
PayloadAttribute att = new PayloadAttribute();
Assert.IsNull(att.Payload);
Payload pl = new Payload(new byte[] { 1, 2, 3, 4 });
att.Payload = pl;
PayloadAttribute att2 = (PayloadAttribute)AssertCloneIsEqual(att);
Assert.AreEqual(pl, att2.Payload);
Assert.AreNotSame(pl, att2.Payload);
att2 = (PayloadAttribute)AssertCopyIsEqual(att);
Assert.AreEqual(pl, att2.Payload);
Assert.AreNotSame(pl, att2.Payload);
att.Clear();
Assert.IsNull(att.Payload);
}
public PrefixAwareTokenFilter(TokenStream prefix, TokenStream suffix) : base(suffix)
{
Suffix = suffix;
Prefix = prefix;
_prefixExhausted = false;
// ReSharper disable DoNotCallOverridableMethodsInConstructor
_termAtt = (TermAttribute) AddAttribute(typeof (TermAttribute));
_posIncrAtt = (PositionIncrementAttribute) AddAttribute(typeof (PositionIncrementAttribute));
_payloadAtt = (PayloadAttribute) AddAttribute(typeof (PayloadAttribute));
_offsetAtt = (OffsetAttribute) AddAttribute(typeof (OffsetAttribute));
_typeAtt = (TypeAttribute) AddAttribute(typeof (TypeAttribute));
_flagsAtt = (FlagsAttribute) AddAttribute(typeof (FlagsAttribute));
// ReSharper restore DoNotCallOverridableMethodsInConstructor
_pTermAtt = (TermAttribute) prefix.AddAttribute(typeof (TermAttribute));
_pPosIncrAtt = (PositionIncrementAttribute) prefix.AddAttribute(typeof (PositionIncrementAttribute));
_pPayloadAtt = (PayloadAttribute) prefix.AddAttribute(typeof (PayloadAttribute));
_pOffsetAtt = (OffsetAttribute) prefix.AddAttribute(typeof (OffsetAttribute));
_pTypeAtt = (TypeAttribute) prefix.AddAttribute(typeof (TypeAttribute));
_pFlagsAtt = (FlagsAttribute) prefix.AddAttribute(typeof (FlagsAttribute));
}
/// <summary>
/// Creates a shingle filter with ad hoc parameter settings.
/// </summary>
/// <param name="input">stream from which to construct the matrix</param>
/// <param name="minimumShingleSize">minimum number of tokens in any shingle.</param>
/// <param name="maximumShingleSize">maximum number of tokens in any shingle.</param>
/// <param name="spacerCharacter">character to use between texts of the token parts in a shingle. null for none.</param>
/// <param name="ignoringSinglePrefixOrSuffixShingle">if true, shingles that only contains permutation of the first of the last column will not be produced as shingles. Useful when adding boundary marker tokens such as '^' and '$'.</param>
/// <param name="settingsCodec">codec used to read input token weight and matrix positioning.</param>
public ShingleMatrixFilter(TokenStream input, int minimumShingleSize, int maximumShingleSize, Char? spacerCharacter, bool ignoringSinglePrefixOrSuffixShingle, TokenSettingsCodec settingsCodec)
{
_input = input;
MinimumShingleSize = minimumShingleSize;
MaximumShingleSize = maximumShingleSize;
SpacerCharacter = spacerCharacter;
IsIgnoringSinglePrefixOrSuffixShingle = ignoringSinglePrefixOrSuffixShingle;
_settingsCodec = settingsCodec;
// ReSharper disable DoNotCallOverridableMethodsInConstructor
_termAtt = (TermAttribute) AddAttribute(typeof (TermAttribute));
_posIncrAtt = (PositionIncrementAttribute) AddAttribute(typeof (PositionIncrementAttribute));
_payloadAtt = (PayloadAttribute) AddAttribute(typeof (PayloadAttribute));
_offsetAtt = (OffsetAttribute) AddAttribute(typeof (OffsetAttribute));
_typeAtt = (TypeAttribute) AddAttribute(typeof (TypeAttribute));
_flagsAtt = (FlagsAttribute) AddAttribute(typeof (FlagsAttribute));
// ReSharper restore DoNotCallOverridableMethodsInConstructor
_inTermAtt = (TermAttribute) input.AddAttribute(typeof (TermAttribute));
_inPosIncrAtt = (PositionIncrementAttribute) input.AddAttribute(typeof (PositionIncrementAttribute));
_inPayloadAtt = (PayloadAttribute) input.AddAttribute(typeof (PayloadAttribute));
_inOffsetAtt = (OffsetAttribute) input.AddAttribute(typeof (OffsetAttribute));
_inTypeAtt = (TypeAttribute) input.AddAttribute(typeof (TypeAttribute));
_inFlagsAtt = (FlagsAttribute) input.AddAttribute(typeof (FlagsAttribute));
}
/// <summary>
/// Creates a shingle filter based on a user defined matrix.
///
/// The filter /will/ delete columns from the input matrix! You will not be able to reset the filter if you used this constructor.
/// todo: don't touch the matrix! use a bool, set the input stream to null or something, and keep track of where in the matrix we are at.
///
/// </summary>
/// <param name="matrix">the input based for creating shingles. Does not need to contain any information until ShingleMatrixFilter.Next(Token) is called the first time.</param>
/// <param name="minimumShingleSize">minimum number of tokens in any shingle.</param>
/// <param name="maximumShingleSize">maximum number of tokens in any shingle.</param>
/// <param name="spacerCharacter">character to use between texts of the token parts in a shingle. null for none.</param>
/// <param name="ignoringSinglePrefixOrSuffixShingle">if true, shingles that only contains permutation of the first of the last column will not be produced as shingles. Useful when adding boundary marker tokens such as '^' and '$'.</param>
/// <param name="settingsCodec">codec used to read input token weight and matrix positioning.</param>
public ShingleMatrixFilter(Matrix.Matrix matrix, int minimumShingleSize, int maximumShingleSize, Char spacerCharacter, bool ignoringSinglePrefixOrSuffixShingle, TokenSettingsCodec settingsCodec)
{
Matrix = matrix;
MinimumShingleSize = minimumShingleSize;
MaximumShingleSize = maximumShingleSize;
SpacerCharacter = spacerCharacter;
IsIgnoringSinglePrefixOrSuffixShingle = ignoringSinglePrefixOrSuffixShingle;
_settingsCodec = settingsCodec;
// ReSharper disable DoNotCallOverridableMethodsInConstructor
_termAtt = (TermAttribute) AddAttribute(typeof (TermAttribute));
_posIncrAtt = (PositionIncrementAttribute) AddAttribute(typeof (PositionIncrementAttribute));
_payloadAtt = (PayloadAttribute) AddAttribute(typeof (PayloadAttribute));
_offsetAtt = (OffsetAttribute) AddAttribute(typeof (OffsetAttribute));
_typeAtt = (TypeAttribute) AddAttribute(typeof (TypeAttribute));
_flagsAtt = (FlagsAttribute) AddAttribute(typeof (FlagsAttribute));
// ReSharper restore DoNotCallOverridableMethodsInConstructor
// set the input to be an empty token stream, we already have the data.
_input = new EmptyTokenStream();
_inTermAtt = (TermAttribute) _input.AddAttribute(typeof (TermAttribute));
_inPosIncrAtt = (PositionIncrementAttribute) _input.AddAttribute(typeof (PositionIncrementAttribute));
_inPayloadAtt = (PayloadAttribute) _input.AddAttribute(typeof (PayloadAttribute));
_inOffsetAtt = (OffsetAttribute) _input.AddAttribute(typeof (OffsetAttribute));
_inTypeAtt = (TypeAttribute) _input.AddAttribute(typeof (TypeAttribute));
_inFlagsAtt = (FlagsAttribute) _input.AddAttribute(typeof (FlagsAttribute));
}
public virtual void TestPayloadAttribute()
{
PayloadAttribute att = new PayloadAttribute();
Assert.IsNull(att.Payload);
Payload pl = new Payload(new byte[]{1, 2, 3, 4});
att.Payload = pl;
PayloadAttribute att2 = (PayloadAttribute) AssertCloneIsEqual(att);
Assert.AreEqual(pl, att2.Payload);
Assert.AreNotSame(pl, att2.Payload);
att2 = (PayloadAttribute) AssertCopyIsEqual(att);
Assert.AreEqual(pl, att2.Payload);
Assert.AreNotSame(pl, att2.Payload);
att.Clear();
Assert.IsNull(att.Payload);
}
public override void CopyTo(AttributeImpl target)
{
PayloadAttribute t = (PayloadAttribute)target;
t.SetPayload((payload == null)?null:(Payload)payload.Clone());
}
public TokenListStream(ICollection<Token> tokens)
{
_tokens = tokens;
_termAtt = (TermAttribute) AddAttribute(typeof (TermAttribute));
_posIncrAtt = (PositionIncrementAttribute) AddAttribute(typeof (PositionIncrementAttribute));
_payloadAtt = (PayloadAttribute) AddAttribute(typeof (PayloadAttribute));
_offsetAtt = (OffsetAttribute) AddAttribute(typeof (OffsetAttribute));
_typeAtt = (TypeAttribute) AddAttribute(typeof (TypeAttribute));
_flagsAtt = (FlagsAttribute) AddAttribute(typeof (FlagsAttribute));
}
public override void CopyTo(Attribute target)
{
PayloadAttribute t = (PayloadAttribute)target;
t.Payload = (payload == null) ? null : (BytesRef)payload.Clone();
}
