public virtual void TestCaptureState()
{
// init a first instance
AttributeSource src = new AttributeSource();
ICharTermAttribute termAtt = src.AddAttribute <ICharTermAttribute>();
ITypeAttribute typeAtt = src.AddAttribute <ITypeAttribute>();
termAtt.Append("TestTerm");
typeAtt.Type = "TestType";
int hashCode = src.GetHashCode();
AttributeSource.State state = src.CaptureState();
// modify the attributes
termAtt.SetEmpty().Append("AnotherTestTerm");
typeAtt.Type = "AnotherTestType";
Assert.IsTrue(hashCode != src.GetHashCode(), "Hash code should be different");
src.RestoreState(state);
Assert.AreEqual(termAtt.ToString(), "TestTerm");
Assert.AreEqual(typeAtt.Type, "TestType");
Assert.AreEqual(hashCode, src.GetHashCode(), "Hash code should be equal after restore");
// restore into an exact configured copy
AttributeSource copy = new AttributeSource();
copy.AddAttribute <ICharTermAttribute>();
copy.AddAttribute <ITypeAttribute>();
copy.RestoreState(state);
Assert.AreEqual(src.GetHashCode(), copy.GetHashCode(), "Both AttributeSources should have same hashCode after restore");
Assert.AreEqual(src, copy, "Both AttributeSources should be equal after restore");
// init a second instance (with attributes in different order and one additional attribute)
AttributeSource src2 = new AttributeSource();
typeAtt = src2.AddAttribute <ITypeAttribute>();
IFlagsAttribute flagsAtt = src2.AddAttribute <IFlagsAttribute>();
termAtt = src2.AddAttribute <ICharTermAttribute>();
flagsAtt.Flags = 12345;
src2.RestoreState(state);
Assert.AreEqual(termAtt.ToString(), "TestTerm");
Assert.AreEqual(typeAtt.Type, "TestType");
Assert.AreEqual(12345, flagsAtt.Flags, "FlagsAttribute should not be touched");
// init a third instance missing one Attribute
AttributeSource src3 = new AttributeSource();
termAtt = src3.AddAttribute <ICharTermAttribute>();
try
{
src3.RestoreState(state);
Assert.Fail("The third instance is missing the TypeAttribute, so restoreState() should throw IllegalArgumentException");
}
catch (Exception iae) when(iae.IsIllegalArgumentException())
{
// pass
}
}
public override Boolean IncrementToken()
{
if (synonymStack.Count > 0)
{
string syn = synonymStack.Pop();
RestoreState(current);
termAtt.SetTermBuffer(syn);
// This ensures the new word is treated as a synonym
posIncrAtt.SetPositionIncrement(0);
return true;
}
if (!input.IncrementToken())
return false;
// Push synonyms to stack
if (AddAliasesToStack())
{
// Save current token
current = CaptureState();
}
return true;
}
public virtual void TestCaptureState()
{
// init a first instance
AttributeSource src = new AttributeSource();
TermAttribute termAtt = (TermAttribute)src.AddAttribute(typeof(TermAttribute));
TypeAttribute typeAtt = (TypeAttribute)src.AddAttribute(typeof(TypeAttribute));
termAtt.SetTermBuffer("TestTerm");
typeAtt.SetType("TestType");
int hashCode = src.GetHashCode();
AttributeSource.State state = src.CaptureState();
// modify the attributes
termAtt.SetTermBuffer("AnotherTestTerm");
typeAtt.SetType("AnotherTestType");
Assert.IsTrue(hashCode != src.GetHashCode(), "Hash code should be different");
src.RestoreState(state);
Assert.AreEqual("TestTerm", termAtt.Term());
Assert.AreEqual("TestType", typeAtt.Type());
Assert.AreEqual(hashCode, src.GetHashCode(), "Hash code should be equal after restore");
// restore into an exact configured copy
AttributeSource copy = new AttributeSource();
copy.AddAttribute(typeof(TermAttribute));
copy.AddAttribute(typeof(TypeAttribute));
copy.RestoreState(state);
Assert.AreEqual(src.GetHashCode(), copy.GetHashCode(), "Both AttributeSources should have same hashCode after restore");
Assert.AreEqual(src, copy, "Both AttributeSources should be equal after restore");
// init a second instance (with attributes in different order and one additional attribute)
AttributeSource src2 = new AttributeSource();
typeAtt = (TypeAttribute)src2.AddAttribute(typeof(TypeAttribute));
Lucene.Net.Analysis.Tokenattributes.FlagsAttribute flagsAtt = (Lucene.Net.Analysis.Tokenattributes.FlagsAttribute)src2.AddAttribute(typeof(Lucene.Net.Analysis.Tokenattributes.FlagsAttribute));
termAtt = (TermAttribute)src2.AddAttribute(typeof(TermAttribute));
flagsAtt.SetFlags(12345);
src2.RestoreState(state);
Assert.AreEqual("TestTerm", termAtt.Term());
Assert.AreEqual("TestType", typeAtt.Type());
Assert.AreEqual(12345, flagsAtt.GetFlags(), "FlagsAttribute should not be touched");
// init a third instance missing one Attribute
AttributeSource src3 = new AttributeSource();
termAtt = (TermAttribute)src3.AddAttribute(typeof(TermAttribute));
try
{
src3.RestoreState(state);
Assert.Fail("The third instance is missing the TypeAttribute, so restoreState() should throw IllegalArgumentException");
}
catch (System.ArgumentException iae)
{
// pass
}
}
public override bool IncrementToken()
{
if (synonymStack.Count > 0)
{
var syn = synonymStack.Pop();
RestoreState(current);
termAtt.SetTermBuffer(syn);
posIncrAtt.PositionIncrement = 0;
return true;
}
if (!input.IncrementToken())
return false;
if (addAliasesToStack())
current = CaptureState();
return true;
}
public override void Reset()
{
base.Reset();
nextToken = null;
shingleBufferPosition = 0;
shingleBuf.Clear();
numFillerTokensToInsert = 0;
currentToken = null;
hasCurrentToken = false;
}
/*
* Get the next token from the input stream and push it on the token buffer.
* If we encounter a token with position increment > 1, we put filler tokens
* on the token buffer.
* <p/>
* Returns null when the end of the input stream is reached.
* @return the next token, or null if at end of input stream
* @throws IOException if the input stream has a problem
*/
private bool GetNextToken()
{
while (true)
{
if (numFillerTokensToInsert > 0)
{
if (currentToken == null)
{
currentToken = CaptureState();
}
else
{
RestoreState(currentToken);
}
numFillerTokensToInsert--;
// A filler token occupies no space
offsetAtt.SetOffset(offsetAtt.StartOffset, offsetAtt.StartOffset);
termAtt.SetTermBuffer(FILLER_TOKEN, 0, FILLER_TOKEN.Length);
return true;
}
if (hasCurrentToken)
{
if (currentToken != null)
{
RestoreState(currentToken);
currentToken = null;
}
hasCurrentToken = false;
return true;
}
if (!input.IncrementToken()) return false;
hasCurrentToken = true;
if (posIncrAtt.PositionIncrement > 1)
{
numFillerTokensToInsert = posIncrAtt.PositionIncrement - 1;
}
}
}
/* (non-Javadoc)
* @see org.apache.lucene.analysis.TokenStream#next()
*/
public sealed override bool IncrementToken()
{
while (true)
{
if (nextToken == null)
{
if (!FillShingleBuffer())
{
return false;
}
}
nextToken = shingleBuf.First.Value;
if (outputUnigrams)
{
if (shingleBufferPosition == 0)
{
RestoreState(nextToken);
posIncrAtt.PositionIncrement = 1;
shingleBufferPosition++;
return true;
}
}
else if (shingleBufferPosition % this.maxShingleSize == 0)
{
shingleBufferPosition++;
}
if (shingleBufferPosition < shingleBuf.Count)
{
RestoreState(nextToken);
typeAtt.Type = tokenType;
offsetAtt.SetOffset(offsetAtt.StartOffset, endOffsets[shingleBufferPosition]);
StringBuilder buf = shingles[shingleBufferPosition];
int termLength = buf.Length;
char[] TermBuffer = termAtt.TermBuffer();
if (TermBuffer.Length < termLength)
TermBuffer = termAtt.ResizeTermBuffer(termLength);
buf.CopyTo(0, TermBuffer, 0, termLength);
termAtt.SetTermLength(termLength);
if ((!outputUnigrams) && shingleBufferPosition % this.maxShingleSize == 1)
{
posIncrAtt.PositionIncrement = 1;
}
else
{
posIncrAtt.PositionIncrement = 0;
}
shingleBufferPosition++;
if (shingleBufferPosition == shingleBuf.Count)
{
nextToken = null;
shingleBufferPosition = 0;
}
return true;
}
else
{
nextToken = null;
shingleBufferPosition = 0;
}
}
}
internal /*private*/ void SetFinalState(AttributeSource.State finalState)
{
this.finalState = finalState;
}
public IteratorAnonymousInnerClassHelper(AttributeSource.State initState)
{
state = initState;
}
public override void Reset()
{
base.Reset();
tokens.Clear();
current = null;
}
public override bool IncrementToken()
{
if (tokens.Count > 0)
{
Debug.Assert(current != null);
CompoundToken token = tokens.First.Value; tokens.RemoveFirst();
RestoreState(current); // keep all other attributes untouched
termAtt.SetEmpty().Append(token.txt);
offsetAtt.SetOffset(token.startOffset, token.endOffset);
posIncAtt.PositionIncrement = 0;
return true;
}
current = null; // not really needed, but for safety
if (input.IncrementToken())
{
// Only words longer than minWordSize get processed
if (termAtt.Length >= this.minWordSize)
{
Decompose();
// only capture the state if we really need it for producing new tokens
if (tokens.Count > 0)
{
current = CaptureState();
}
}
// return original token:
return true;
}
else
{
return false;
}
}
public IteratorAnonymousInnerClassHelper(AttributeSource outerInstance, AttributeSource.State initState)
{
this.outerInstance = outerInstance;
this.initState = initState;
state = initState;
}
public void Reset()
{
state = null;
consumed = true;
keepOrig = false;
matched = false;
}
public IteratorAnonymousClass(AttributeSource.State initState)
{
state = initState;
}