Elasticsearch的Path Hierarchy Tokenizer正是针对这种用例而创建的。这是如何为您的索引设置它的示例：
# Create a new index with custom path_hierarchy analyzer
# See http://www.elasticsearch.org/guide/reference/index-modules/analysis/pathhierarchy-tokenizer.html
curl -XPUT "localhost:9200/prefix-test" -d '{
"settings": {
"analysis": {
"analyzer": {
"prefix-test-analyzer": {
"type": "custom",
"tokenizer": "prefix-test-tokenizer"
}
},
"tokenizer": {
"prefix-test-tokenizer": {
"type": "path_hierarchy",
"delimiter": "."
}
}
}
},
"mappings": {
"doc": {
"properties": {
"dots": {
"type": "string",
"analyzer": "prefix-test-analyzer",
//"index_analyzer": "prefix-test-analyzer", //deprecated
"search_analyzer": "keyword"
}
}
}
}
}'
echo
# Put some test data
curl -XPUT "localhost:9200/prefix-test/doc/1" -d '{"dots": "first.second.third"}'
curl -XPUT "localhost:9200/prefix-test/doc/2" -d '{"dots": "first.second.foo-bar"}'
curl -XPUT "localhost:9200/prefix-test/doc/3" -d '{"dots": "first.baz.something"}'
curl -XPOST "localhost:9200/prefix-test/_refresh"
echo
# Test searches.
curl -XPOST "localhost:9200/prefix-test/doc/_search?pretty=true" -d '{
"query": {
"term": {
"dots": "first"
}
}
}'
echo
curl -XPOST "localhost:9200/prefix-test/doc/_search?pretty=true" -d '{
"query": {
"term": {
"dots": "first.second"
}
}
}'
echo
curl -XPOST "localhost:9200/prefix-test/doc/_search?pretty=true" -d '{
"query": {
"term": {
"dots": "first.second.foo-bar"
}
}
}'
echo
curl -XPOST "localhost:9200/prefix-test/doc/_search?pretty=true&q=dots:first.second"
echo
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