| public Add ( string input, string output ) : bool | ||
| input | string | the input char sequence |
| output | string | the stemmer override output char sequence |
| return | bool | |
public virtual void TestIgnoreCase()
{
// lets make booked stem to books
// the override filter will convert "booked" to "books",
// but also mark it with KeywordAttribute so Porter will not change it.
StemmerOverrideFilter.Builder builder = new StemmerOverrideFilter.Builder(true);
builder.Add("boOkEd", "books");
Tokenizer tokenizer = new KeywordTokenizer(new StringReader("BooKeD"));
TokenStream stream = new PorterStemFilter(new StemmerOverrideFilter(tokenizer, builder.Build()));
AssertTokenStreamContents(stream, new string[] { "books" });
}
public virtual void TestIgnoreCase()
{
// lets make booked stem to books
// the override filter will convert "booked" to "books",
// but also mark it with KeywordAttribute so Porter will not change it.
StemmerOverrideFilter.Builder builder = new StemmerOverrideFilter.Builder(true);
builder.Add("boOkEd", "books");
Tokenizer tokenizer = new KeywordTokenizer(new StringReader("BooKeD"));
TokenStream stream = new PorterStemFilter(new StemmerOverrideFilter(tokenizer, builder.Build()));
AssertTokenStreamContents(stream, new string[] { "books" });
}
public virtual void TestRandomRealisticWhiteSpace()
{
IDictionary <string, string> map = new Dictionary <string, string>();
int numTerms = AtLeast(50);
for (int i = 0; i < numTerms; i++)
{
string randomRealisticUnicodeString = TestUtil.RandomRealisticUnicodeString(Random);
char[] charArray = randomRealisticUnicodeString.ToCharArray();
StringBuilder sb = new StringBuilder();
for (int j = 0; j < charArray.Length;)
{
int cp = Character.CodePointAt(charArray, j, charArray.Length);
if (!char.IsWhiteSpace((char)cp))
{
sb.AppendCodePoint(cp);
}
j += Character.CharCount(cp);
}
if (sb.Length > 0)
{
string value = TestUtil.RandomSimpleString(Random);
map[sb.ToString()] = value.Length == 0 ? "a" : value;
}
}
if (map.Count == 0)
{
map["booked"] = "books";
}
StemmerOverrideFilter.Builder builder = new StemmerOverrideFilter.Builder(Random.nextBoolean());
IDictionary <string, string> entrySet = map;
StringBuilder input = new StringBuilder();
IList <string> output = new List <string>();
foreach (KeyValuePair <string, string> entry in entrySet)
{
builder.Add(entry.Key, entry.Value);
if (Random.nextBoolean() || output.Count == 0)
{
input.Append(entry.Key).Append(" ");
output.Add(entry.Value);
}
}
Tokenizer tokenizer = new WhitespaceTokenizer(TEST_VERSION_CURRENT, new StringReader(input.ToString()));
TokenStream stream = new PorterStemFilter(new StemmerOverrideFilter(tokenizer, builder.Build()));
AssertTokenStreamContents(stream, output.ToArray());
}
public virtual void Inform(IResourceLoader loader)
{
if (dictionaryFiles != null)
{
AssureMatchVersion();
IList <string> files = SplitFileNames(dictionaryFiles);
if (files.Count() > 0)
{
StemmerOverrideFilter.Builder builder = new StemmerOverrideFilter.Builder(ignoreCase);
foreach (string file in files)
{
IList <string> list = GetLines(loader, file.Trim());
foreach (string line in list)
{
string[] mapping = new Regex("\t").Split(line, 2);
builder.Add(mapping[0], mapping[1]);
}
}
dictionary = builder.Build();
}
}
}
public virtual void Inform(IResourceLoader loader)
{
if (dictionaryFiles != null)
{
AssureMatchVersion();
IEnumerable<string> files = SplitFileNames(dictionaryFiles);
if (files.Count() > 0)
{
StemmerOverrideFilter.Builder builder = new StemmerOverrideFilter.Builder(ignoreCase);
foreach (string file in files)
{
IEnumerable<string> list = GetLines(loader, file.Trim());
foreach (string line in list)
{
string[] mapping = new Regex("\t").Split(line, 2);
builder.Add(mapping[0], mapping[1]);
}
}
dictionary = builder.Build();
}
}
}
public virtual void TestRandomRealisticKeyword()
{
IDictionary <string, string> map = new Dictionary <string, string>();
int numTerms = AtLeast(50);
for (int i = 0; i < numTerms; i++)
{
string randomRealisticUnicodeString = TestUtil.RandomRealisticUnicodeString(Random);
if (randomRealisticUnicodeString.Length > 0)
{
string value = TestUtil.RandomSimpleString(Random);
map[randomRealisticUnicodeString] = value.Length == 0 ? "a" : value;
}
}
if (map.Count == 0)
{
map["booked"] = "books";
}
StemmerOverrideFilter.Builder builder = new StemmerOverrideFilter.Builder(Random.nextBoolean());
IDictionary <string, string> entrySet = map;
foreach (KeyValuePair <string, string> entry in entrySet)
{
builder.Add(entry.Key, entry.Value);
}
StemmerOverrideFilter.StemmerOverrideMap build = builder.Build();
foreach (KeyValuePair <string, string> entry in entrySet)
{
if (Random.nextBoolean())
{
Tokenizer tokenizer = new KeywordTokenizer(new StringReader(entry.Key));
TokenStream stream = new PorterStemFilter(new StemmerOverrideFilter(tokenizer, build));
AssertTokenStreamContents(stream, new string[] { entry.Value });
}
}
}
public virtual void TestRandomRealisticWhiteSpace()
{
IDictionary<string, string> map = new Dictionary<string, string>();
int numTerms = AtLeast(50);
for (int i = 0; i < numTerms; i++)
{
string randomRealisticUnicodeString = TestUtil.RandomRealisticUnicodeString(Random());
char[] charArray = randomRealisticUnicodeString.ToCharArray();
StringBuilder sb = new StringBuilder();
for (int j = 0; j < charArray.Length;)
{
int cp = Character.CodePointAt(charArray, j, charArray.Length);
if (!char.IsWhiteSpace((char)cp))
{
sb.Append(cp);
}
j += Character.CharCount(cp);
}
if (sb.Length > 0)
{
string value = TestUtil.RandomSimpleString(Random());
map[sb.ToString()] = value.Length == 0 ? "a" : value;
}
}
if (map.Count == 0)
{
map["booked"] = "books";
}
StemmerOverrideFilter.Builder builder = new StemmerOverrideFilter.Builder(Random().nextBoolean());
IDictionary<string, string> entrySet = map;
StringBuilder input = new StringBuilder();
IList<string> output = new List<string>();
foreach (KeyValuePair<string, string> entry in entrySet)
{
builder.Add(entry.Key, entry.Value);
if (Random().nextBoolean() || output.Count == 0)
{
input.Append(entry.Key).Append(" ");
output.Add(entry.Value);
}
}
Tokenizer tokenizer = new WhitespaceTokenizer(TEST_VERSION_CURRENT, new StringReader(input.ToString()));
TokenStream stream = new PorterStemFilter(new StemmerOverrideFilter(tokenizer, builder.Build()));
AssertTokenStreamContents(stream, output.ToArray());
}
public virtual void TestRandomRealisticKeyword()
{
IDictionary<string, string> map = new Dictionary<string, string>();
int numTerms = AtLeast(50);
for (int i = 0; i < numTerms; i++)
{
string randomRealisticUnicodeString = TestUtil.RandomRealisticUnicodeString(Random());
if (randomRealisticUnicodeString.Length > 0)
{
string value = TestUtil.RandomSimpleString(Random());
map[randomRealisticUnicodeString] = value.Length == 0 ? "a" : value;
}
}
if (map.Count == 0)
{
map["booked"] = "books";
}
StemmerOverrideFilter.Builder builder = new StemmerOverrideFilter.Builder(Random().nextBoolean());
IDictionary<string, string> entrySet = map;
foreach (KeyValuePair<string, string> entry in entrySet)
{
builder.Add(entry.Key, entry.Value);
}
StemmerOverrideFilter.StemmerOverrideMap build = builder.Build();
foreach (KeyValuePair<string, string> entry in entrySet)
{
if (Random().nextBoolean())
{
Tokenizer tokenizer = new KeywordTokenizer(new StringReader(entry.Key));
TokenStream stream = new PorterStemFilter(new StemmerOverrideFilter(tokenizer, build));
AssertTokenStreamContents(stream, new string[] { entry.Value });
}
}
}
public DutchAnalyzer(LuceneVersion matchVersion, CharArraySet stopwords, CharArraySet stemExclusionTable, CharArrayMap<string> stemOverrideDict)
{
this.matchVersion = matchVersion;
this.stoptable = CharArraySet.UnmodifiableSet(CharArraySet.Copy(matchVersion, stopwords));
this.excltable = CharArraySet.UnmodifiableSet(CharArraySet.Copy(matchVersion, stemExclusionTable));
#pragma warning disable 612, 618
if (stemOverrideDict.Count == 0 || !matchVersion.OnOrAfter(LuceneVersion.LUCENE_31))
#pragma warning restore 612, 618
{
this.stemdict = null;
this.origStemdict = CharArrayMap.UnmodifiableMap(CharArrayMap.Copy(matchVersion, stemOverrideDict));
}
else
{
this.origStemdict = null;
// we don't need to ignore case here since we lowercase in this analyzer anyway
StemmerOverrideFilter.Builder builder = new StemmerOverrideFilter.Builder(false);
CharArrayMap<string>.EntryIterator iter = (CharArrayMap<string>.EntryIterator)stemOverrideDict.EntrySet().GetEnumerator();
CharsRef spare = new CharsRef();
while (iter.HasNext)
{
char[] nextKey = iter.NextKey();
spare.CopyChars(nextKey, 0, nextKey.Length);
builder.Add(new string(spare.Chars), iter.CurrentValue);
}
try
{
this.stemdict = builder.Build();
}
catch (IOException ex)
{
throw new Exception("can not build stem dict", ex);
}
}
}