rnewson commented on PR #4291:
URL: https://github.com/apache/couchdb/pull/4291#issuecomment-1341152139
API choices.
Currently you can define a nouveau index almost identically to clouseau, the
`index()` function behaves the same way, you just need to use "nouveau" as a
top-level key instead of "indexes";
clouseau;
```
{
"indexes": {
"bar": {
"default_analyzer": "standard",
"field_analyzers": {
"foo": "english"
},
"index": "function(doc) { index(\"foo\", \"bar\", {\"store\":true});
index(\"bar\", doc.bar, {\"store\":true,\"facet\":true}); }"
}
}
}
```
nouveau
```
{
"nouveau": {
"bar": {
"default_analyzer": "standard",
"field_analyzers": {
"foo": "english"
},
"index": "function(doc) { index(\"foo\", \"bar\", {\"store\":true});
index(\"bar\", doc.bar, {\"store\":true,\"facet\":true}); }"
}
}
}
```
the index() function is enhanced for nouveau
(https://github.com/rnewson/nouveau#index-function) giving the user better
control over the indexing process but the basic shape for clouseau works the
same.
The alternative proposal is to use a version attribute
```
"indexes": {
"bar": {
"version": 2,
"default_analyzer": "standard",
"field_analyzers": {
"foo": "english"
},
"index": "function(doc) { index(\"foo\", \"bar\", {\"store\":true});
index(\"bar\", doc.bar, {\"store\":true,\"facet\":true}); }"
}
}
}
```
This could either be a `"version": 2` or perhaps a `"engine": "nouveau"`
dreyfus and erlang-side nouveau would be adjusted to take the appropriate
subset from the "indexes" object if we went this way.
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