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LUCENE-8509: WordDelimiterGraphFilter no longer adjusts offsets by default

This commit is contained in:
Alan Woodward 2018-12-03 13:36:21 +00:00
parent f5867a1413
commit 75a053dd69
4 changed files with 41 additions and 27 deletions
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4
lucene/CHANGES.txt
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@ -142,6 +142,10 @@ Changes in Runtime Behavior
anymore. This doesn't affect ordering as this is a constant factor which is
the same for every document. (Luca Cavanna via Adrien Grand)
* LUCENE-8509: WordDelimiterGraphFilter will no longer set the offsets of internal
tokens by default, preventing a number of bugs when the filter is chained with
tokenfilters that change the length of their tokens (Alan Woodward)
New Features
* LUCENE-8340: LongPoint#newDistanceQuery may be used to boost scores based on

17
lucene/analysis/common/src/java/org/apache/lucene/analysis/miscellaneous/WordDelimiterGraphFilter.java
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@ -191,6 +191,8 @@ public final class WordDelimiterGraphFilter extends TokenFilter {
// used for concatenating runs of similar typed subwords (word,number)
private final WordDelimiterConcatenation concat = new WordDelimiterConcatenation();
private final boolean adjustInternalOffsets;
// number of subwords last output by concat.
private int lastConcatCount;
@ -206,10 +208,7 @@ public final class WordDelimiterGraphFilter extends TokenFilter {
private int savedEndOffset;
private AttributeSource.State savedState;
private int lastStartOffset;
// if length by start + end offsets doesn't match the term text then assume
// this is a synonym and don't adjust the offsets.
private boolean hasIllegalOffsets;
private boolean adjustingOffsets;
private int wordPos;
@ -217,11 +216,12 @@ public final class WordDelimiterGraphFilter extends TokenFilter {
* Creates a new WordDelimiterGraphFilter
*
* @param in TokenStream to be filtered
* @param adjustInternalOffsets if the offsets of partial terms should be adjusted
* @param charTypeTable table containing character types
* @param configurationFlags Flags configuring the filter
* @param protWords If not null is the set of tokens to protect from being delimited
*/
public WordDelimiterGraphFilter(TokenStream in, byte[] charTypeTable, int configurationFlags, CharArraySet protWords) {
public WordDelimiterGraphFilter(TokenStream in, boolean adjustInternalOffsets, byte[] charTypeTable, int configurationFlags, CharArraySet protWords) {
super(in);
if ((configurationFlags &
~(GENERATE_WORD_PARTS |
@ -240,6 +240,7 @@ public final class WordDelimiterGraphFilter extends TokenFilter {
this.protWords = protWords;
this.iterator = new WordDelimiterIterator(
charTypeTable, has(SPLIT_ON_CASE_CHANGE), has(SPLIT_ON_NUMERICS), has(STEM_ENGLISH_POSSESSIVE));
this.adjustInternalOffsets = adjustInternalOffsets;
}
/**
@ -251,7 +252,7 @@ public final class WordDelimiterGraphFilter extends TokenFilter {
* @param protWords If not null is the set of tokens to protect from being delimited
*/
public WordDelimiterGraphFilter(TokenStream in, int configurationFlags, CharArraySet protWords) {
this(in, WordDelimiterIterator.DEFAULT_WORD_DELIM_TABLE, configurationFlags, protWords);
this(in, false, WordDelimiterIterator.DEFAULT_WORD_DELIM_TABLE, configurationFlags, protWords);
}
/** Iterates all words parts and concatenations, buffering up the term parts we should return. */
@ -261,7 +262,7 @@ public final class WordDelimiterGraphFilter extends TokenFilter {
// if length by start + end offsets doesn't match the term's text then set offsets for all our word parts/concats to the incoming
// offsets. this can happen if WDGF is applied to an injected synonym, or to a stem'd form, etc:
hasIllegalOffsets = (savedEndOffset - savedStartOffset != savedTermLength);
adjustingOffsets = adjustInternalOffsets && savedEndOffset - savedStartOffset == savedTermLength;
bufferedLen = 0;
lastConcatCount = 0;
@ -391,7 +392,7 @@ public final class WordDelimiterGraphFilter extends TokenFilter {
int startOffset;
int endOffset;
if (hasIllegalOffsets) {
if (adjustingOffsets == false) {
startOffset = savedStartOffset;
endOffset = savedEndOffset;
} else {

5
lucene/analysis/common/src/java/org/apache/lucene/analysis/miscellaneous/WordDelimiterGraphFilterFactory.java
View File

@ -53,12 +53,14 @@ import static org.apache.lucene.analysis.miscellaneous.WordDelimiterIterator.*;
public class WordDelimiterGraphFilterFactory extends TokenFilterFactory implements ResourceLoaderAware {
public static final String PROTECTED_TOKENS = "protected";
public static final String TYPES = "types";
public static final String OFFSETS = "adjustOffsets";
private final String wordFiles;
private final String types;
private final int flags;
byte[] typeTable = null;
private CharArraySet protectedWords = null;
private boolean adjustOffsets = false;
/** Creates a new WordDelimiterGraphFilterFactory */
public WordDelimiterGraphFilterFactory(Map<String, String> args) {
@ -94,6 +96,7 @@ public class WordDelimiterGraphFilterFactory extends TokenFilterFactory implemen
wordFiles = get(args, PROTECTED_TOKENS);
types = get(args, TYPES);
this.flags = flags;
this.adjustOffsets = getBoolean(args, OFFSETS, true);
if (!args.isEmpty()) {
throw new IllegalArgumentException("Unknown parameters: " + args);
}
@ -117,7 +120,7 @@ public class WordDelimiterGraphFilterFactory extends TokenFilterFactory implemen
@Override
public TokenFilter create(TokenStream input) {
return new WordDelimiterGraphFilter(input, typeTable == null ? WordDelimiterIterator.DEFAULT_WORD_DELIM_TABLE : typeTable,
return new WordDelimiterGraphFilter(input, adjustOffsets, typeTable == null ? WordDelimiterIterator.DEFAULT_WORD_DELIM_TABLE : typeTable,
flags, protectedWords);
}

42
lucene/analysis/common/src/test/org/apache/lucene/analysis/miscellaneous/TestWordDelimiterGraphFilter.java
View File

@ -64,7 +64,8 @@ public class TestWordDelimiterGraphFilter extends BaseTokenStreamTestCase {
int flags = GENERATE_WORD_PARTS | GENERATE_NUMBER_PARTS | CATENATE_ALL | SPLIT_ON_CASE_CHANGE | SPLIT_ON_NUMERICS | STEM_ENGLISH_POSSESSIVE;
// test that subwords and catenated subwords have
// the correct offsets.
WordDelimiterGraphFilter wdf = new WordDelimiterGraphFilter(new CannedTokenStream(new Token("foo-bar", 5, 12)), DEFAULT_WORD_DELIM_TABLE, flags, null);
WordDelimiterGraphFilter wdf = new WordDelimiterGraphFilter(new CannedTokenStream(new Token("foo-bar", 5, 12)),
true, DEFAULT_WORD_DELIM_TABLE, flags, null);
assertTokenStreamContents(wdf,
new String[] { "foobar", "foo", "bar" },
@ -72,7 +73,7 @@ public class TestWordDelimiterGraphFilter extends BaseTokenStreamTestCase {
new int[] { 12, 8, 12 });
// with illegal offsets:
wdf = new WordDelimiterGraphFilter(new CannedTokenStream(new Token("foo-bar", 5, 6)), DEFAULT_WORD_DELIM_TABLE, flags, null);
wdf = new WordDelimiterGraphFilter(new CannedTokenStream(new Token("foo-bar", 5, 6)), true, DEFAULT_WORD_DELIM_TABLE, flags, null);
assertTokenStreamContents(wdf,
new String[] { "foobar", "foo", "bar" },
new int[] { 5, 5, 5 },
@ -81,7 +82,8 @@ public class TestWordDelimiterGraphFilter extends BaseTokenStreamTestCase {
public void testOffsetChange() throws Exception {
int flags = GENERATE_WORD_PARTS | GENERATE_NUMBER_PARTS | CATENATE_ALL | SPLIT_ON_CASE_CHANGE | SPLIT_ON_NUMERICS | STEM_ENGLISH_POSSESSIVE;
WordDelimiterGraphFilter wdf = new WordDelimiterGraphFilter(new CannedTokenStream(new Token("übelkeit)", 7, 16)), DEFAULT_WORD_DELIM_TABLE, flags, null);
WordDelimiterGraphFilter wdf = new WordDelimiterGraphFilter(new CannedTokenStream(new Token("übelkeit)", 7, 16)),
true, DEFAULT_WORD_DELIM_TABLE, flags, null);
assertTokenStreamContents(wdf,
new String[] { "übelkeit" },
@ -91,7 +93,8 @@ public class TestWordDelimiterGraphFilter extends BaseTokenStreamTestCase {
public void testOffsetChange2() throws Exception {
int flags = GENERATE_WORD_PARTS | GENERATE_NUMBER_PARTS | CATENATE_ALL | SPLIT_ON_CASE_CHANGE | SPLIT_ON_NUMERICS | STEM_ENGLISH_POSSESSIVE;
WordDelimiterGraphFilter wdf = new WordDelimiterGraphFilter(new CannedTokenStream(new Token("(übelkeit", 7, 17)), DEFAULT_WORD_DELIM_TABLE, flags, null);
WordDelimiterGraphFilter wdf = new WordDelimiterGraphFilter(new CannedTokenStream(new Token("(übelkeit", 7, 17)),
true, DEFAULT_WORD_DELIM_TABLE, flags, null);
// illegal offsets:
assertTokenStreamContents(wdf,
new String[] { "übelkeit" },
@ -101,7 +104,8 @@ public class TestWordDelimiterGraphFilter extends BaseTokenStreamTestCase {
public void testOffsetChange3() throws Exception {
int flags = GENERATE_WORD_PARTS | GENERATE_NUMBER_PARTS | CATENATE_ALL | SPLIT_ON_CASE_CHANGE | SPLIT_ON_NUMERICS | STEM_ENGLISH_POSSESSIVE;
WordDelimiterGraphFilter wdf = new WordDelimiterGraphFilter(new CannedTokenStream(new Token("(übelkeit", 7, 16)), DEFAULT_WORD_DELIM_TABLE, flags, null);
WordDelimiterGraphFilter wdf = new WordDelimiterGraphFilter(new CannedTokenStream(new Token("(übelkeit", 7, 16)),
true, DEFAULT_WORD_DELIM_TABLE, flags, null);
assertTokenStreamContents(wdf,
new String[] { "übelkeit" },
new int[] { 8 },
@ -110,7 +114,8 @@ public class TestWordDelimiterGraphFilter extends BaseTokenStreamTestCase {
public void testOffsetChange4() throws Exception {
int flags = GENERATE_WORD_PARTS | GENERATE_NUMBER_PARTS | CATENATE_ALL | SPLIT_ON_CASE_CHANGE | SPLIT_ON_NUMERICS | STEM_ENGLISH_POSSESSIVE;
WordDelimiterGraphFilter wdf = new WordDelimiterGraphFilter(new CannedTokenStream(new Token("(foo,bar)", 7, 16)), DEFAULT_WORD_DELIM_TABLE, flags, null);
WordDelimiterGraphFilter wdf = new WordDelimiterGraphFilter(new CannedTokenStream(new Token("(foo,bar)", 7, 16)),
true, DEFAULT_WORD_DELIM_TABLE, flags, null);
assertTokenStreamContents(wdf,
new String[] { "foobar", "foo", "bar"},
@ -120,7 +125,7 @@ public class TestWordDelimiterGraphFilter extends BaseTokenStreamTestCase {
public void doSplit(final String input, String... output) throws Exception {
int flags = GENERATE_WORD_PARTS | GENERATE_NUMBER_PARTS | SPLIT_ON_CASE_CHANGE | SPLIT_ON_NUMERICS | STEM_ENGLISH_POSSESSIVE;
WordDelimiterGraphFilter wdf = new WordDelimiterGraphFilter(keywordMockTokenizer(input),
WordDelimiterGraphFilter wdf = new WordDelimiterGraphFilter(keywordMockTokenizer(input), false,
WordDelimiterIterator.DEFAULT_WORD_DELIM_TABLE, flags, null);
assertTokenStreamContents(wdf, output);
@ -182,7 +187,7 @@ public class TestWordDelimiterGraphFilter extends BaseTokenStreamTestCase {
// the correct offsets.
Token token = new Token("foo-bar", 5, 12);
token.setType("mytype");
WordDelimiterGraphFilter wdf = new WordDelimiterGraphFilter(new CannedTokenStream(token), DEFAULT_WORD_DELIM_TABLE, flags, null);
WordDelimiterGraphFilter wdf = new WordDelimiterGraphFilter(new CannedTokenStream(token), flags, null);
assertTokenStreamContents(wdf,
new String[] {"foobar", "foo", "bar"},
@ -235,7 +240,7 @@ public class TestWordDelimiterGraphFilter extends BaseTokenStreamTestCase {
public TokenStreamComponents createComponents(String field) {
Tokenizer tokenizer = new MockTokenizer(MockTokenizer.WHITESPACE, false);
return new TokenStreamComponents(tokenizer, new WordDelimiterGraphFilter(
tokenizer,
tokenizer, true, DEFAULT_WORD_DELIM_TABLE,
flags, protWords));
}
};
@ -272,7 +277,7 @@ public class TestWordDelimiterGraphFilter extends BaseTokenStreamTestCase {
public TokenStreamComponents createComponents(String field) {
Tokenizer tokenizer = new MockTokenizer(MockTokenizer.WHITESPACE, false);
return new TokenStreamComponents(tokenizer, new WordDelimiterGraphFilter(
new LargePosIncTokenFilter(tokenizer),
new LargePosIncTokenFilter(tokenizer), true, DEFAULT_WORD_DELIM_TABLE,
flags, protWords));
}
};
@ -317,7 +322,7 @@ public class TestWordDelimiterGraphFilter extends BaseTokenStreamTestCase {
public TokenStreamComponents createComponents(String field) {
Tokenizer tokenizer = new MockTokenizer(MockTokenizer.WHITESPACE, false);
StopFilter filter = new StopFilter(tokenizer, EnglishAnalyzer.ENGLISH_STOP_WORDS_SET);
return new TokenStreamComponents(tokenizer, new WordDelimiterGraphFilter(filter, flags, protWords));
return new TokenStreamComponents(tokenizer, new WordDelimiterGraphFilter(filter, true, DEFAULT_WORD_DELIM_TABLE, flags, protWords));
}
};
@ -350,8 +355,8 @@ public class TestWordDelimiterGraphFilter extends BaseTokenStreamTestCase {
assertAnalyzesTo(keywordTestAnalyzer(GENERATE_WORD_PARTS | IGNORE_KEYWORDS),
"abc-def klm-nop kpop",
new String[] {"abc", "def", "klm-nop", "kpop"},
new int[]{0, 4, 8, 16},
new int[]{3, 7, 15, 20},
new int[]{0, 0, 8, 16},
new int[]{7, 7, 15, 20},
null,
new int[]{1, 1, 1, 1},
null,
@ -384,7 +389,7 @@ public class TestWordDelimiterGraphFilter extends BaseTokenStreamTestCase {
@Override
public TokenStreamComponents createComponents(String field) {
Tokenizer tokenizer = new MockTokenizer(MockTokenizer.WHITESPACE, false);
return new TokenStreamComponents(tokenizer, new WordDelimiterGraphFilter(tokenizer, flags, null));
return new TokenStreamComponents(tokenizer, new WordDelimiterGraphFilter(tokenizer, true, DEFAULT_WORD_DELIM_TABLE, flags, null));
}
};
@ -414,8 +419,8 @@ public class TestWordDelimiterGraphFilter extends BaseTokenStreamTestCase {
assertAnalyzesTo(a, "abc-def-123-456",
new String[] { "abcdef123456", "abc-def-123-456", "abcdef", "abc", "def", "123456", "123", "456" },
new int[] { 0, 0, 0, 0, 4, 8, 8, 12 },
new int[] { 15, 15, 7, 3, 7, 15, 11, 15 },
new int[] { 0, 0, 0, 0, 0, 0, 0, 0 },
new int[] { 15, 15, 15, 15, 15, 15, 15, 15 },
null,
new int[] { 1, 0, 0, 0, 1, 1, 0, 1 },
null,
@ -954,7 +959,8 @@ public class TestWordDelimiterGraphFilter extends BaseTokenStreamTestCase {
}
public void testEmptyString() throws Exception {
WordDelimiterGraphFilter wdf = new WordDelimiterGraphFilter(new CannedTokenStream(new Token("", 0, 0)), DEFAULT_WORD_DELIM_TABLE, GENERATE_WORD_PARTS | CATENATE_ALL | PRESERVE_ORIGINAL, null);
WordDelimiterGraphFilter wdf = new WordDelimiterGraphFilter(new CannedTokenStream(new Token("", 0, 0)),
GENERATE_WORD_PARTS | CATENATE_ALL | PRESERVE_ORIGINAL, null);
wdf.reset();
assertTrue(wdf.incrementToken());
assertFalse(wdf.incrementToken());
@ -967,7 +973,7 @@ public class TestWordDelimiterGraphFilter extends BaseTokenStreamTestCase {
new Token("foo-bar", 0, 7));
CharArraySet protectedWords = new CharArraySet(new HashSet<>(Arrays.asList("foo17-BAR")), true);
WordDelimiterGraphFilter wdf = new WordDelimiterGraphFilter(tokens, DEFAULT_WORD_DELIM_TABLE, GENERATE_WORD_PARTS | PRESERVE_ORIGINAL | CATENATE_ALL, protectedWords);
WordDelimiterGraphFilter wdf = new WordDelimiterGraphFilter(tokens, GENERATE_WORD_PARTS | PRESERVE_ORIGINAL | CATENATE_ALL, protectedWords);
assertGraphStrings(wdf,
"foo17-bar foo bar",
"foo17-bar foo-bar",