feat: support use user's file as dictionary for analyzer filter (#46145)

relate: https://github.com/milvus-io/milvus/issues/43687

---------

Signed-off-by: aoiasd <zhicheng.yue@zilliz.com>

internal/core/thirdparty/tantivy/tantivy-binding/src/analyzer/analyzer.rs

@@ -3,6 +3,7 @@ use std::collections::HashMap;
 use tantivy::tokenizer::*;
 
 use super::{build_in_analyzer::*, filter::*, tokenizers::get_builder_with_tokenizer};
+use crate::analyzer::filter::{get_stop_words_list, get_string_list};
 use crate::error::Result;
 use crate::error::TantivyBindingError;
 
@@ -36,32 +37,6 @@ impl AnalyzerBuilder<'_> {
         )))
     }
 
-    fn add_custom_filter(
-        &mut self,
-        name: &String,
-        params: &json::Map<String, json::Value>,
-    ) -> Result<()> {
-        match SystemFilter::try_from(params) {
-            Ok(filter) => {
-                self.filters.insert(name.to_string(), filter);
-                Ok(())
-            }
-            Err(e) => Err(e),
-        }
-    }
-
-    // not used now
-    // support add custom filter with filter name
-    fn add_custom_filters(&mut self, params: &json::Map<String, json::Value>) -> Result<()> {
-        for (name, value) in params {
-            if !value.is_object() {
-                continue;
-            }
-            self.add_custom_filter(name, value.as_object().unwrap())?;
-        }
-        Ok(())
-    }
-
     fn build_filter(
         &mut self,
         mut builder: TextAnalyzerBuilder,

internal/core/thirdparty/tantivy/tantivy-binding/src/analyzer/data/test/decompounder_dict.txt

@@ -0,0 +1,2 @@
+bank
+note

internal/core/thirdparty/tantivy/tantivy-binding/src/analyzer/data/test/stop_words_dict.txt

@@ -0,0 +1,7 @@
+this
+a
+an
+the
+is
+in
+of

internal/core/thirdparty/tantivy/tantivy-binding/src/analyzer/data/test/synonyms_dict.txt

@@ -0,0 +1,2 @@
+distance, range, span, length
+interval => gap

internal/core/thirdparty/tantivy/tantivy-binding/src/analyzer/filter/cn_char_filter.rs

@@ -0,0 +1,98 @@
+use tantivy::tokenizer::{Token, TokenFilter, TokenStream, Tokenizer};
+
+pub struct CnCharOnlyFilter;
+
+pub struct CnCharOnlyFilterStream<T> {
+    regex: regex::Regex,
+    tail: T,
+}
+
+impl TokenFilter for CnCharOnlyFilter {
+    type Tokenizer<T: Tokenizer> = CnCharOnlyFilterWrapper<T>;
+
+    fn transform<T: Tokenizer>(self, tokenizer: T) -> CnCharOnlyFilterWrapper<T> {
+        CnCharOnlyFilterWrapper(tokenizer)
+    }
+}
+
+#[derive(Clone)]
+pub struct CnCharOnlyFilterWrapper<T>(T);
+
+impl<T: Tokenizer> Tokenizer for CnCharOnlyFilterWrapper<T> {
+    type TokenStream<'a> = CnCharOnlyFilterStream<T::TokenStream<'a>>;
+
+    fn token_stream<'a>(&'a mut self, text: &'a str) -> Self::TokenStream<'a> {
+        CnCharOnlyFilterStream {
+            regex: regex::Regex::new("\\p{Han}+").unwrap(),
+            tail: self.0.token_stream(text),
+        }
+    }
+}
+
+impl<T: TokenStream> TokenStream for CnCharOnlyFilterStream<T> {
+    fn advance(&mut self) -> bool {
+        while self.tail.advance() {
+            if self.regex.is_match(&self.tail.token().text) {
+                return true;
+            }
+        }
+
+        false
+    }
+
+    fn token(&self) -> &Token {
+        self.tail.token()
+    }
+
+    fn token_mut(&mut self) -> &mut Token {
+        self.tail.token_mut()
+    }
+}
+
+pub struct CnAlphaNumOnlyFilter;
+
+pub struct CnAlphaNumOnlyFilterStream<T> {
+    regex: regex::Regex,
+    tail: T,
+}
+
+impl TokenFilter for CnAlphaNumOnlyFilter {
+    type Tokenizer<T: Tokenizer> = CnAlphaNumOnlyFilterWrapper<T>;
+
+    fn transform<T: Tokenizer>(self, tokenizer: T) -> CnAlphaNumOnlyFilterWrapper<T> {
+        CnAlphaNumOnlyFilterWrapper(tokenizer)
+    }
+}
+#[derive(Clone)]
+pub struct CnAlphaNumOnlyFilterWrapper<T>(T);
+
+impl<T: Tokenizer> Tokenizer for CnAlphaNumOnlyFilterWrapper<T> {
+    type TokenStream<'a> = CnAlphaNumOnlyFilterStream<T::TokenStream<'a>>;
+
+    fn token_stream<'a>(&'a mut self, text: &'a str) -> Self::TokenStream<'a> {
+        CnAlphaNumOnlyFilterStream {
+            regex: regex::Regex::new(r"[\p{Han}a-zA-Z0-9]+").unwrap(),
+            tail: self.0.token_stream(text),
+        }
+    }
+}
+
+impl<T: TokenStream> TokenStream for CnAlphaNumOnlyFilterStream<T> {
+    fn advance(&mut self) -> bool {
+        while self.tail.advance() {
+            if self.regex.is_match(&self.tail.token().text) {
+                return true;
+            }
+        }
+
+        false
+    }
+
+    fn token(&self) -> &Token {
+        self.tail.token()
+    }
+
+    fn token_mut(&mut self) -> &mut Token {
+        self.tail.token_mut()
+    }
+}

internal/core/thirdparty/tantivy/tantivy-binding/src/analyzer/filter/decompounder_filter.rs

@@ -0,0 +1,97 @@
+use super::filter::FilterBuilder;
+use super::util::read_line_file;
+use crate::error::{Result, TantivyBindingError};
+use serde_json as json;
+use tantivy::tokenizer::SplitCompoundWords;
+
+const WORD_LIST_KEY: &str = "word_list";
+const WORD_LIST_FILE_KEY: &str = "word_list_file";
+
+impl FilterBuilder for SplitCompoundWords {
+    fn from_json(params: &json::Map<String, json::Value>) -> Result<Self> {
+        let mut dict = Vec::<String>::new();
+        if let Some(value) = params.get(WORD_LIST_KEY) {
+            if !value.is_array() {
+                return Err(TantivyBindingError::InternalError(
+                    "decompounder word list should be array".to_string(),
+                ));
+            }
+            let words = value.as_array().unwrap();
+            for element in words {
+                if let Some(word) = element.as_str() {
+                    dict.push(word.to_string());
+                } else {
+                    return Err(TantivyBindingError::InternalError(
+                        "decompounder word list item should be string".to_string(),
+                    ));
+                }
+            }
+        }
+
+        if let Some(file_params) = params.get(WORD_LIST_FILE_KEY) {
+            read_line_file(&mut dict, file_params, "decompounder word list file")?;
+        }
+
+        if dict.is_empty() {
+            return Err(TantivyBindingError::InternalError(
+                "decompounder word list is empty".to_string(),
+            ));
+        }
+
+        SplitCompoundWords::from_dictionary(dict).map_err(|e| {
+            TantivyBindingError::InternalError(format!(
+                "create decompounder failed: {}",
+                e.to_string()
+            ))
+        })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::SplitCompoundWords;
+    use crate::analyzer::filter::FilterBuilder;
+    use crate::analyzer::tokenizers::standard_builder;
+    use crate::log::init_log;
+    use serde_json as json;
+    use std::collections::HashSet;
+    use std::path::Path;
+
+    #[test]
+    fn test_decompounder_filter_with_file() {
+        init_log();
+        let file_dir = Path::new(file!()).parent().unwrap();
+        let decompounder_path = file_dir.join("../data/test/decompounder_dict.txt");
+        let decompounder_path_str = decompounder_path.to_string_lossy().to_string();
+        let params = format!(
+            r#"{{
+                "type": "decompounder",
+                "word_list_file": {{
+                    "type": "local",
+                    "path": "{decompounder_path_str}"
+                }}
+            }}"#
+        );
+        let json_params = json::from_str::<json::Value>(&params).unwrap();
+        // let filter = SplitCompoundWords::from_dictionary(vec!["bank", "note"]);
+        let filter = SplitCompoundWords::from_json(json_params.as_object().unwrap());
+        assert!(filter.is_ok(), "error: {}", filter.err().unwrap());
+        let builder = standard_builder().filter(filter.unwrap());
+        let mut analyzer = builder.build();
+        let mut stream = analyzer.token_stream("banknote");
+
+        let mut results = Vec::<String>::new();
+        while stream.advance() {
+            let token = stream.token();
+            results.push(token.text.clone());
+        }
+
+        assert_eq!(
+            results
+                .iter()
+                .map(|s| s.as_str())
+                .collect::<HashSet<&str>>(),
+            HashSet::from(["bank", "note"])
+        );
+    }
+}

internal/core/thirdparty/tantivy/tantivy-binding/src/analyzer/filter/filter.rs

@@ -1,8 +1,9 @@
 use serde_json as json;
 use tantivy::tokenizer::*;
 
-use super::util::*;
-use super::{RegexFilter, RemovePunctFilter, SynonymFilter};
+use super::{
+    CnAlphaNumOnlyFilter, CnCharOnlyFilter, RegexFilter, RemovePunctFilter, SynonymFilter,
+};
 use crate::error::{Result, TantivyBindingError};
 
 pub(crate) enum SystemFilter {
@@ -21,6 +22,12 @@ pub(crate) enum SystemFilter {
     Synonym(SynonymFilter),
 }
 
+pub(crate) trait FilterBuilder {
+    fn from_json(params: &json::Map<String, json::Value>) -> Result<Self>
+    where
+        Self: Sized;
+}
+
 impl SystemFilter {
     pub(crate) fn transform(self, builder: TextAnalyzerBuilder) -> TextAnalyzerBuilder {
         match self {
@@ -58,19 +65,6 @@ fn get_length_filter(params: &json::Map<String, json::Value>) -> Result<SystemFi
     Ok(SystemFilter::Length(RemoveLongFilter::limit(limit + 1)))
 }
 
-fn get_stop_words_filter(params: &json::Map<String, json::Value>) -> Result<SystemFilter> {
-    let value = params.get("stop_words");
-    if value.is_none() {
-        return Err(TantivyBindingError::InternalError(
-            "stop filter stop_words can't be empty".to_string(),
-        ));
-    }
-    let str_list = get_string_list(value.unwrap(), "stop_words filter")?;
-    Ok(SystemFilter::Stop(StopWordFilter::remove(
-        get_stop_words_list(str_list),
-    )))
-}
-
 fn get_decompounder_filter(params: &json::Map<String, json::Value>) -> Result<SystemFilter> {
     let value = params.get("word_list");
     if value.is_none() || !value.unwrap().is_array() {
@@ -82,13 +76,12 @@ fn get_decompounder_filter(params: &json::Map<String, json::Value>) -> Result<Sy
     let stop_words = value.unwrap().as_array().unwrap();
     let mut str_list = Vec::<String>::new();
     for element in stop_words {
-        match element.as_str() {
-            Some(word) => str_list.push(word.to_string()),
-            _ => {
-                return Err(TantivyBindingError::InternalError(
-                    "decompounder word list item should be string".to_string(),
-                ))
-            }
+        if let Some(word) = element.as_str() {
+            str_list.push(word.to_string());
+        } else {
+            return Err(TantivyBindingError::InternalError(
+                "decompounder word list item should be string".to_string(),
+            ));
         }
     }
 
@@ -101,57 +94,7 @@ fn get_decompounder_filter(params: &json::Map<String, json::Value>) -> Result<Sy
     }
 }
 
-fn get_stemmer_filter(params: &json::Map<String, json::Value>) -> Result<SystemFilter> {
-    let value = params.get("language");
-    if value.is_none() || !value.unwrap().is_string() {
-        return Err(TantivyBindingError::InternalError(
-            "stemmer language field should be string".to_string(),
-        ));
-    }
-
-    match value.unwrap().as_str().unwrap().into_language() {
-        Ok(language) => Ok(SystemFilter::Stemmer(Stemmer::new(language))),
-        Err(e) => Err(TantivyBindingError::InternalError(format!(
-            "create stemmer failed : {}",
-            e.to_string()
-        ))),
-    }
-}
-
-trait LanguageParser {
-    fn into_language(self) -> Result<Language>;
-}
-
-impl LanguageParser for &str {
-    fn into_language(self) -> Result<Language> {
-        match self.to_lowercase().as_str() {
-            "arabic" => Ok(Language::Arabic),
-            "arabig" => Ok(Language::Arabic), // typo
-            "danish" => Ok(Language::Danish),
-            "dutch" => Ok(Language::Dutch),
-            "english" => Ok(Language::English),
-            "finnish" => Ok(Language::Finnish),
-            "french" => Ok(Language::French),
-            "german" => Ok(Language::German),
-            "greek" => Ok(Language::Greek),
-            "hungarian" => Ok(Language::Hungarian),
-            "italian" => Ok(Language::Italian),
-            "norwegian" => Ok(Language::Norwegian),
-            "portuguese" => Ok(Language::Portuguese),
-            "romanian" => Ok(Language::Romanian),
-            "russian" => Ok(Language::Russian),
-            "spanish" => Ok(Language::Spanish),
-            "swedish" => Ok(Language::Swedish),
-            "tamil" => Ok(Language::Tamil),
-            "turkish" => Ok(Language::Turkish),
-            other => Err(TantivyBindingError::InternalError(format!(
-                "unsupport language: {}",
-                other
-            ))),
-        }
-    }
-}
-
+// fetch build-in filter from string
 impl From<&str> for SystemFilter {
     fn from(value: &str) -> Self {
         match value {
@@ -180,9 +123,11 @@ impl TryFrom<&json::Map<String, json::Value>> for SystemFilter {
 
                 match value.as_str().unwrap() {
                     "length" => get_length_filter(params),
-                    "stop" => get_stop_words_filter(params),
-                    "decompounder" => get_decompounder_filter(params),
-                    "stemmer" => get_stemmer_filter(params),
+                    "stop" => StopWordFilter::from_json(params).map(|f| SystemFilter::Stop(f)),
+                    "decompounder" => {
+                        SplitCompoundWords::from_json(params).map(|f| SystemFilter::Decompounder(f))
+                    }
+                    "stemmer" => Stemmer::from_json(params).map(|f| SystemFilter::Stemmer(f)),
                     "regex" => RegexFilter::from_json(params).map(|f| SystemFilter::Regex(f)),
                     "synonym" => SynonymFilter::from_json(params).map(|f| SystemFilter::Synonym(f)),
                     other => Err(TantivyBindingError::InternalError(format!(
@@ -197,100 +142,3 @@ impl TryFrom<&json::Map<String, json::Value>> for SystemFilter {
         }
     }
 }
-
-pub struct CnCharOnlyFilter;
-
-pub struct CnCharOnlyFilterStream<T> {
-    regex: regex::Regex,
-    tail: T,
-}
-
-impl TokenFilter for CnCharOnlyFilter {
-    type Tokenizer<T: Tokenizer> = CnCharOnlyFilterWrapper<T>;
-
-    fn transform<T: Tokenizer>(self, tokenizer: T) -> CnCharOnlyFilterWrapper<T> {
-        CnCharOnlyFilterWrapper(tokenizer)
-    }
-}
-
-#[derive(Clone)]
-pub struct CnCharOnlyFilterWrapper<T>(T);
-
-impl<T: Tokenizer> Tokenizer for CnCharOnlyFilterWrapper<T> {
-    type TokenStream<'a> = CnCharOnlyFilterStream<T::TokenStream<'a>>;
-
-    fn token_stream<'a>(&'a mut self, text: &'a str) -> Self::TokenStream<'a> {
-        CnCharOnlyFilterStream {
-            regex: regex::Regex::new("\\p{Han}+").unwrap(),
-            tail: self.0.token_stream(text),
-        }
-    }
-}
-
-impl<T: TokenStream> TokenStream for CnCharOnlyFilterStream<T> {
-    fn advance(&mut self) -> bool {
-        while self.tail.advance() {
-            if self.regex.is_match(&self.tail.token().text) {
-                return true;
-            }
-        }
-
-        false
-    }
-
-    fn token(&self) -> &Token {
-        self.tail.token()
-    }
-
-    fn token_mut(&mut self) -> &mut Token {
-        self.tail.token_mut()
-    }
-}
-
-pub struct CnAlphaNumOnlyFilter;
-
-pub struct CnAlphaNumOnlyFilterStream<T> {
-    regex: regex::Regex,
-    tail: T,
-}
-
-impl TokenFilter for CnAlphaNumOnlyFilter {
-    type Tokenizer<T: Tokenizer> = CnAlphaNumOnlyFilterWrapper<T>;
-
-    fn transform<T: Tokenizer>(self, tokenizer: T) -> CnAlphaNumOnlyFilterWrapper<T> {
-        CnAlphaNumOnlyFilterWrapper(tokenizer)
-    }
-}
-#[derive(Clone)]
-pub struct CnAlphaNumOnlyFilterWrapper<T>(T);
-
-impl<T: Tokenizer> Tokenizer for CnAlphaNumOnlyFilterWrapper<T> {
-    type TokenStream<'a> = CnAlphaNumOnlyFilterStream<T::TokenStream<'a>>;
-
-    fn token_stream<'a>(&'a mut self, text: &'a str) -> Self::TokenStream<'a> {
-        CnAlphaNumOnlyFilterStream {
-            regex: regex::Regex::new(r"[\p{Han}a-zA-Z0-9]+").unwrap(),
-            tail: self.0.token_stream(text),
-        }
-    }
-}
-
-impl<T: TokenStream> TokenStream for CnAlphaNumOnlyFilterStream<T> {
-    fn advance(&mut self) -> bool {
-        while self.tail.advance() {
-            if self.regex.is_match(&self.tail.token().text) {
-                return true;
-            }
-        }
-
-        false
-    }
-
-    fn token(&self) -> &Token {
-        self.tail.token()
-    }
-
-    fn token_mut(&mut self) -> &mut Token {
-        self.tail.token_mut()
-    }
-}

internal/core/thirdparty/tantivy/tantivy-binding/src/analyzer/filter/mod.rs

@@ -1,14 +1,19 @@
+mod cn_char_filter;
+mod decompounder_filter;
 mod filter;
 mod regex_filter;
 mod remove_punct_filter;
+mod stemmer_filter;
+mod stop_word_filter;
+pub mod stop_words;
 mod synonym_filter;
 mod util;
 
-pub mod stop_words;
-
+pub(crate) use cn_char_filter::{CnAlphaNumOnlyFilter, CnCharOnlyFilter};
 use regex_filter::RegexFilter;
 use remove_punct_filter::RemovePunctFilter;
 use synonym_filter::SynonymFilter;
 
 pub(crate) use filter::*;
+pub(crate) use stop_word_filter::get_stop_words_list;
 pub(crate) use util::*;

internal/core/thirdparty/tantivy/tantivy-binding/src/analyzer/filter/stemmer_filter.rs

@@ -0,0 +1,57 @@
+use super::filter::FilterBuilder;
+use crate::error::{Result, TantivyBindingError};
+use serde_json as json;
+use tantivy::tokenizer::{Language, Stemmer};
+
+impl FilterBuilder for Stemmer {
+    fn from_json(params: &json::Map<String, json::Value>) -> Result<Self> {
+        let value = params.get("language");
+        if value.is_none() || !value.unwrap().is_string() {
+            return Err(TantivyBindingError::InternalError(
+                "stemmer language field should be string".to_string(),
+            ));
+        }
+
+        match value.unwrap().as_str().unwrap().into_language() {
+            Ok(language) => Ok(Stemmer::new(language)),
+            Err(e) => Err(TantivyBindingError::InternalError(format!(
+                "create stemmer failed : {}",
+                e.to_string()
+            ))),
+        }
+    }
+}
+
+trait StemmerLanguageParser {
+    fn into_language(self) -> Result<Language>;
+}
+
+impl StemmerLanguageParser for &str {
+    fn into_language(self) -> Result<Language> {
+        match self.to_lowercase().as_str() {
+            "arabic" => Ok(Language::Arabic),
+            "arabig" => Ok(Language::Arabic), // typo
+            "danish" => Ok(Language::Danish),
+            "dutch" => Ok(Language::Dutch),
+            "english" => Ok(Language::English),
+            "finnish" => Ok(Language::Finnish),
+            "french" => Ok(Language::French),
+            "german" => Ok(Language::German),
+            "greek" => Ok(Language::Greek),
+            "hungarian" => Ok(Language::Hungarian),
+            "italian" => Ok(Language::Italian),
+            "norwegian" => Ok(Language::Norwegian),
+            "portuguese" => Ok(Language::Portuguese),
+            "romanian" => Ok(Language::Romanian),
+            "russian" => Ok(Language::Russian),
+            "spanish" => Ok(Language::Spanish),
+            "swedish" => Ok(Language::Swedish),
+            "tamil" => Ok(Language::Tamil),
+            "turkish" => Ok(Language::Turkish),
+            other => Err(TantivyBindingError::InternalError(format!(
+                "unsupport language: {}",
+                other
+            ))),
+        }
+    }
+}

internal/core/thirdparty/tantivy/tantivy-binding/src/analyzer/filter/stop_word_filter.rs

@@ -0,0 +1,94 @@
+use super::filter::FilterBuilder;
+use super::stop_words::fetch_language_stop_words;
+use super::util::*;
+use crate::error::{Result, TantivyBindingError};
+use serde_json as json;
+use tantivy::tokenizer::StopWordFilter;
+
+const STOP_WORDS_LIST_KEY: &str = "stop_words";
+const STOP_WORDS_FILE_KEY: &str = "stop_words_file";
+
+pub(crate) fn get_stop_words_list(str_list: Vec<String>) -> Vec<String> {
+    let mut stop_words = Vec::new();
+    for str in str_list {
+        if str.len() > 0 && str.chars().nth(0).unwrap() == '_' {
+            match fetch_language_stop_words(str.as_str()) {
+                Some(words) => {
+                    for word in words {
+                        stop_words.push(word.to_string());
+                    }
+                    continue;
+                }
+                None => {}
+            }
+        }
+        stop_words.push(str);
+    }
+    stop_words
+}
+
+impl FilterBuilder for StopWordFilter {
+    fn from_json(params: &json::Map<String, json::Value>) -> Result<Self> {
+        let mut dict = Vec::<String>::new();
+        if let Some(value) = params.get(STOP_WORDS_LIST_KEY) {
+            dict = get_stop_words_list(get_string_list(value, "stop_words")?);
+        }
+
+        if let Some(file_params) = params.get(STOP_WORDS_FILE_KEY) {
+            read_line_file(&mut dict, file_params, "stop words dict file")?;
+        }
+
+        Ok(StopWordFilter::remove(dict))
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::StopWordFilter;
+    use crate::analyzer::filter::FilterBuilder;
+    use crate::analyzer::tokenizers::standard_builder;
+    use crate::log::init_log;
+    use serde_json as json;
+    use std::collections::HashSet;
+    use std::path::Path;
+
+    #[test]
+    fn test_stop_words_filter_with_file() {
+        init_log();
+        let file_dir = Path::new(file!()).parent().unwrap();
+        let stop_words_path = file_dir.join("../data/test/stop_words_dict.txt");
+        let stop_words_path_str = stop_words_path.to_string_lossy().to_string();
+        let params = format!(
+            r#"{{
+                "type": "stop_words",
+                "stop_words_file": {{
+                    "type": "local",
+                    "path": "{stop_words_path_str}"
+                }}
+            }}"#
+        );
+
+        let json_params = json::from_str::<json::Value>(&params).unwrap();
+        let filter = StopWordFilter::from_json(json_params.as_object().unwrap());
+        assert!(filter.is_ok(), "error: {}", filter.err().unwrap());
+
+        let builder = standard_builder().filter(filter.unwrap());
+        let mut analyzer = builder.build();
+        let mut stream = analyzer
+            .token_stream("this is a simple test of the stop words filter in an indexing system");
+
+        let mut results = Vec::<String>::new();
+        while stream.advance() {
+            let token = stream.token();
+            results.push(token.text.clone());
+        }
+
+        assert_eq!(
+            results
+                .iter()
+                .map(|s| s.as_str())
+                .collect::<HashSet<&str>>(),
+            HashSet::from(["simple", "test", "stop", "words", "filter", "indexing", "system"])
+        );
+    }
+}

internal/core/thirdparty/tantivy/tantivy-binding/src/analyzer/filter/synonym_filter.rs

@@ -1,6 +1,8 @@
+use crate::analyzer::options::get_resource_path;
 use crate::error::{Result, TantivyBindingError};
 use serde_json as json;
 use std::collections::{HashMap, HashSet};
+use std::io::BufRead;
 use std::sync::Arc;
 use tantivy::tokenizer::{Token, TokenFilter, TokenStream, Tokenizer};
 
@@ -197,6 +199,23 @@ impl SynonymDict {
     }
 }
 
+fn read_synonyms_file(builder: &mut SynonymDictBuilder, params: &json::Value) -> Result<()> {
+    let path = get_resource_path(params, "synonyms dict file")?;
+    let file = std::fs::File::open(path)?;
+    let reader = std::io::BufReader::new(file);
+    for line in reader.lines() {
+        if let Ok(row_data) = line {
+            builder.add_row(&row_data)?;
+        } else {
+            return Err(TantivyBindingError::InternalError(format!(
+                "read synonyms dict file failed, error: {}",
+                line.unwrap_err().to_string()
+            )));
+        }
+    }
+    Ok(())
+}
+
 #[derive(Clone)]
 pub struct SynonymFilter {
     dict: Arc<SynonymDict>,
@@ -226,6 +245,10 @@ impl SynonymFilter {
                 })?;
         }
 
+        if let Some(file_params) = params.get("synonyms_file") {
+            read_synonyms_file(&mut builder, file_params)?;
+        }
+
         Ok(SynonymFilter {
             dict: Arc::new(builder.build()),
         })
@@ -331,6 +354,7 @@ mod tests {
     use crate::log::init_log;
     use serde_json as json;
     use std::collections::HashSet;
+    use std::path::Path;
 
     #[test]
     fn test_synonym_filter() {
@@ -361,4 +385,41 @@ mod tests {
             HashSet::from(["\\test", "translate", "=>", "synonym"])
         );
     }
+
+    #[test]
+    fn test_synonym_filter_with_file() {
+        init_log();
+        let file_dir = Path::new(file!()).parent().unwrap();
+        let synonyms_path = file_dir.join("../data/test/synonyms_dict.txt");
+        let synonyms_path_str = synonyms_path.to_string_lossy().to_string();
+        let params = format!(
+            r#"{{
+                "type": "synonym",
+                "synonyms_file": {{
+                    "type": "local",
+                    "path": "{synonyms_path_str}"
+                }}
+            }}"#
+        );
+        let json_params = json::from_str::<json::Value>(&params).unwrap();
+        let filter = SynonymFilter::from_json(json_params.as_object().unwrap());
+        assert!(filter.is_ok(), "error: {}", filter.err().unwrap());
+        let builder = standard_builder().filter(filter.unwrap());
+        let mut analyzer = builder.build();
+        let mut stream = analyzer.token_stream("distance interval");
+
+        let mut results = Vec::<String>::new();
+        while stream.advance() {
+            let token = stream.token();
+            results.push(token.text.clone());
+        }
+
+        assert_eq!(
+            results
+                .iter()
+                .map(|s| s.as_str())
+                .collect::<HashSet<&str>>(),
+            HashSet::from(["distance", "range", "span", "length", "interval", "gap"])
+        );
+    }
 }

internal/core/thirdparty/tantivy/tantivy-binding/src/analyzer/filter/util.rs

@@ -1,7 +1,7 @@
-use serde_json as json;
-
-use super::stop_words;
+use crate::analyzer::options::get_resource_path;
 use crate::error::{Result, TantivyBindingError};
+use serde_json as json;
+use std::io::BufRead;
 
 pub fn get_string_list(value: &json::Value, label: &str) -> Result<Vec<String>> {
     if !value.is_array() {
@@ -25,21 +25,24 @@ pub fn get_string_list(value: &json::Value, label: &str) -> Result<Vec<String>>
     Ok(str_list)
 }
 
-pub(crate) fn get_stop_words_list(str_list: Vec<String>) -> Vec<String> {
-    let mut stop_words = Vec::new();
-    for str in str_list {
-        if str.len() > 0 && str.chars().nth(0).unwrap() == '_' {
-            match stop_words::fetch_language_stop_words(str.as_str()) {
-                Some(words) => {
-                    for word in words {
-                        stop_words.push(word.to_string());
-                    }
-                    continue;
-                }
-                None => {}
-            }
+pub(crate) fn read_line_file(
+    dict: &mut Vec<String>,
+    params: &json::Value,
+    key: &str,
+) -> Result<()> {
+    let path = get_resource_path(params, key)?;
+    let file = std::fs::File::open(path)?;
+    let reader = std::io::BufReader::new(file);
+    for line in reader.lines() {
+        if let Ok(row_data) = line {
+            dict.push(row_data);
+        } else {
+            return Err(TantivyBindingError::InternalError(format!(
+                "read {} file failed, error: {}",
+                key,
+                line.unwrap_err().to_string()
+            )));
         }
-        stop_words.push(str);
     }
-    stop_words
+    Ok(())
 }

tests/python_client/milvus_client/test_milvus_client_analyzer.py

@@ -416,11 +416,9 @@ class TestMilvusClientAnalyzer(TestMilvusClientV2Base):
     
     @pytest.mark.tags(CaseLabel.L1)
     @pytest.mark.parametrize("invalid_filter_params", [
-        {"tokenizer": "standard", "filter": [{"type": "stop"}]},
         {"tokenizer": "standard", "filter": [{"type": "stop", "stop_words": "not_a_list"}]},
         {"tokenizer": "standard", "filter": [{"type": "stop", "stop_words": [123, 456]}]},
         {"tokenizer": "standard", "filter": [{"type": "invalid_filter_type"}]},
-        {"tokenizer": "standard", "filter": [{"type": "stop", "stop_words": None}]},
     ])
     def test_analyzer_with_invalid_filter(self, invalid_filter_params):
         """