Solr(Lucene)在添加自定义TokenFilter后仅索引第一个文档

Question

我创建了一个自定义标记过滤器,用于连接流中的所有标记.这是我的incrementToken()功能

public boolean incrementToken() throws IOException {                        
    if (finished) {                                                         
        logger.debug("Finished");                                           
        return false;                                                       
    }                                                                       
    logger.debug("Starting");                                               
    StringBuilder buffer = new StringBuilder();                             
    int length = 0;                                                         
    while (input.incrementToken()) {                                        
        if (0 == length) {                                                  
            buffer.append(termAtt);                                         
            length += termAtt.length();                                     
        } else {                                                            
            buffer.append(" ").append(termAtt);                             
            length += termAtt.length() + 1;                                 
        }                                                                   
    }                                                                       
    termAtt.setEmpty().append(buffer);                                      
    //offsetAtt.setOffset(0, length);                                       
    finished = true;                                                        
    return true;                                                            
}

我将新的Filter添加到字段的索引和查询分析链的末尾,并从http:// localhost:8983/solr/admin/analysis.jsp测试过滤器似乎正在工作.过滤器连接流中的标记.但是在重新索引文档时,只有我的第一个文档被编入索引.

这就是我的过滤器链的样子.

        <analyzer type="index">                                             
            <charFilter class="solr.PatternReplaceCharFilterFactory" pattern="[-_]" replacement=" " />
            <charFilter class="solr.PatternReplaceCharFilterFactory" pattern="[^\p{L}\p{Nd}\p{Mn}\p{Mc}\s+]" replacement="" />
            <tokenizer class="solr.WhitespaceTokenizerFactory" />           
            <filter class="solr.LowerCaseFilterFactory" />                  
            <filter class="solr.StopWordFilterFactory" ignoreCase="true"               words="words.txt" />
            <filter class="org.custom.solr.analysis.ConcatFilterFactory" />
        </analyzer>                                                         
        <analyzer type="query">                                             
            <charFilter class="solr.PatternReplaceCharFilterFactory" pattern="[-_]" replacement=" " />
            <charFilter class="solr.PatternReplaceCharFilterFactory" pattern="[^\p{L}\p{Nd}\p{Mn}\p{Mc}\s+]" replacement="" />
            <tokenizer class="solr.WhitespaceTokenizerFactory" />           
            <filter class="solr.LowerCaseFilterFactory" />                  
            <filter class="solr.StopWordFilterFactory" ignoreCase="true"               words="words.txt" />
            <filter class="org.custom.solr.analysis.ConcatFilterFactory" />
        </analyzer>

没有ConcatFilterFactory所有单词正确索引,但ConcatFilterFactory只有第一个文档被索引.我究竟做错了什么？请帮助我理解这个问题.

更新:

终于弄明白了这个问题.

if (finished) {                                                         
    logger.debug("Finished"); 
    finished = false;                                  
    return false;                                                       
}  

看起来同一个类正在被重用.说得通.

Answer 1

您应该为您的过滤器编写一个单元测试。即使您的分析有效，它也应该失败。显然你忘记在返回 false 之前添加这一行：

finished = false;