如何在Pylucene 8.6.1中创建自定义分析器？

Question

我已经看过this、this和this了，但我不确定它们为什么不适合我

我通常会使用下面这样的分析仪

import lucene
from org.apache.lucene.analysis.core import WhitespaceAnalyzer
from org.apache.lucene.index import IndexWriterConfig, IndexWriter
from org.apache.lucene.store import SimpleFSDirectory
from java.nio.file import Paths
from org.apache.lucene.document import Document, Field, TextField

index_path = "./index"

lucene.initVM()

analyzer =  WhitespaceAnalyzer()
config = IndexWriterConfig(analyzer)
store = SimpleFSDirectory(Paths.get(index_path))
writer = IndexWriter(store, config)

doc = Document()
doc.add(Field("title", "The quick brown fox.",  TextField.TYPE_STORED))
writer.addDocument(doc)

writer.close()
store.close()

我想使用MyAnalyzer()而不是WhitespaceAnalyzer()，它应该有LowerCaseFilter和WhitespaceTokenizer

from org.apache.lucene.analysis.core import LowerCaseFilter, WhitespaceTokenizer
from org.apache.pylucene.analysis import PythonAnalyzer

class MyAnalyzer(PythonAnalyzer):
    def __init__(self):
        PythonAnalyzer.__init__(self)

    def createComponents(self, fieldName):
        # What do I write here?

你能帮我写和使用MyAnalyzer()吗

Answer 1

我发现here和here下面的方法有效

from org.apache.lucene.analysis.core import LowerCaseFilter, WhitespaceTokenizer
from org.apache.pylucene.analysis import PythonAnalyzer
from org.apache.lucene.analysis import Analyzer

class MyAnalyzer(PythonAnalyzer):
    def __init__(self):
        PythonAnalyzer.__init__(self)

    def createComponents(self, fieldName):
        source = WhitespaceTokenizer()
        result = LowerCaseFilter(source)
        return Analyzer.TokenStreamComponents(source, result)

如果有人能给我指出正确的方向，让我能够正确地找到这些答案，那就太好了