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feat: apply builder pattern for dynamic query build
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79 changes: 79 additions & 0 deletions
79
...cture/src/main/kotlin/com/lukinhasssss/catalogo/infrastructure/video/VideoQueryBuilder.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| package com.lukinhasssss.catalogo.infrastructure.video | ||
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| import co.elastic.clients.elasticsearch._types.FieldValue | ||
| import co.elastic.clients.elasticsearch._types.query_dsl.Query | ||
| import co.elastic.clients.elasticsearch._types.query_dsl.QueryBuilders | ||
| import com.lukinhasssss.catalogo.infrastructure.video.VideoQueryBuilder.Option | ||
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| class VideoQueryBuilder(vararg opts: Option) { | ||
| private val must: MutableList<Query> = mutableListOf() | ||
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| init { | ||
| opts.forEach { it.invoke(this) } | ||
| } | ||
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| fun must(aQuery: Query): VideoQueryBuilder { | ||
| must.add(aQuery) | ||
| return this | ||
| } | ||
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| fun build(): Query = QueryBuilders.bool { b -> b.must(must) } | ||
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| fun interface Option : (VideoQueryBuilder) -> Unit | ||
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| companion object { | ||
| private val NOOP: Option = Option { } | ||
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| fun onlyPublished(): Option = Option { b -> b.must(QueryBuilders.term { t -> t.field("published").value(true) }) } | ||
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| fun containingCategories(categories: Set<String>): Option { | ||
| if (categories.isEmpty()) { | ||
| return NOOP | ||
| } | ||
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| return Option { b -> b.must(QueryBuilders.terms { t -> t.field("categories").terms { it.value(fieldValues(categories)) } }) } | ||
| } | ||
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| fun containingCastMembers(members: Set<String>): Option { | ||
| if (members.isEmpty()) { | ||
| return NOOP | ||
| } | ||
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| return Option { b -> b.must(QueryBuilders.terms { t -> t.field("cast_members").terms { it.value(fieldValues(members)) } }) } | ||
| } | ||
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| fun containingGenres(genres: Set<String>): Option { | ||
| if (genres.isEmpty()) { | ||
| return NOOP | ||
| } | ||
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| return Option { b -> b.must(QueryBuilders.terms { t -> t.field("genres").terms { it.value(fieldValues(genres)) } }) } | ||
| } | ||
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| fun launchedAtEquals(launchedAt: Int?): Option { | ||
| if (launchedAt == null) { | ||
| return NOOP | ||
| } | ||
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| return Option { b -> b.must(QueryBuilders.term { t -> t.field("launched_at").value(launchedAt.toLong()) }) } | ||
| } | ||
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| fun ratingEquals(rating: String?): Option { | ||
| if (rating.isNullOrBlank()) { | ||
| return NOOP | ||
| } | ||
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| return Option { b -> b.must(QueryBuilders.term { t -> t.field("rating").value(rating) }) } | ||
| } | ||
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| fun titleOrDescriptionContaining(terms: String?): Option { | ||
| if (terms.isNullOrBlank()) { | ||
| return NOOP | ||
| } | ||
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| return Option { b -> b.must(QueryBuilders.queryString { q -> q.fields("title", "description").query("*$terms*") }) } | ||
| } | ||
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| private fun fieldValues(ids: Set<String>): List<FieldValue> = ids.map { FieldValue.of(it) } | ||
| } | ||
| } |