Spring Data DynamoDB - 存储库执行扫描而不是查询

Question

预期行为

存储库对仅使用 hashKey 和 rangeKey 属性的方法执行查询，结果如下：

"{"TableName":"music","KeyConditionExpression":"artist = :_artist and begins_with(title, :_title)","ExpressionAttributeValues":{":_artist":{"S":"Djavan"},":_title":{"S":"Eu te devoro"}}}"

实际行为

存储库对仅使用 hashKey 和 rangeKey 属性的方法执行 scanFilter，结果如下：

"{"TableName":"music","ScanFilter":{"artist":{"AttributeValueList":[{"S":"Djavan"}],"ComparisonOperator":"EQ"},"title":{"AttributeValueList":[{"S":"Eu te devoro"}],"ComparisonOperator":"BEGINS_WITH"}}}"

重现问题的步骤

使用名为音乐的实体

@DynamoDBTable(tableName = "music")
data class Music(
        @field:Id
        @DynamoDBIgnore
        val id: MusicId = MusicId(),

        var genre: String? = null
) {
    @DynamoDBHashKey(attributeName = "artist")
    fun getArtist() = id.artist

    fun setArtist(artist: String) {
        id.artist = artist
    }

    @DynamoDBHashKey(attributeName = "title")
    fun getTitle() = id.title

    fun setTitle(title: String) {
        id.title = title
    }

}

@DynamoDBDocument
data class MusicId(
        @field:DynamoDBHashKey(attributeName = "artist")
        var artist: String? = null,

        @field:DynamoDBRangeKey(attributeName = "title")
        var title: String? = null
) : Serializable

还有一个存储库

@EnableScan //I know that if I remove this annotation, enables won't be permitted, but the problem is that the implementation code doesn't recognize my method as a key query and if I remove this annotation, the method falls on invocation
interface MusicRepository : CrudRepository<Music, MusicId> {

    fun findByArtistAndTitleStartingWith(artista: String, sortKey: String): List<Music>
}

当我调用时：

@PostConstruct
    fun init() {
        println(musicRepository.findByArtistAndTitleStartingWith("Djavan", "Eu te devoro").joinToString())
    }

日志显示了我对 AWS 的调用，如上所示

规格

库：https://github.com/boostchicken/spring-data-dynamodb
Spring 数据 DynamoDB 版本：5.2.5
Spring数据版本：未使用
Spring 启动启动器 Web 版本：2.3.4.RELEASE
AWS SDK 版本：1.11.573
Java 版本: 11
平台详情：Windows

Github issue

我是不是做错了什么？还是 spring 数据创建对 aws 的正确查询的另一种方法？

Answer 1

尝试随机更改实体后。我在存储库方法中得到了预期的结果。

使用复合键映射实体的正确方法

@DynamoDBTable(tableName = "music")
data class Music(

        @get:DynamoDBHashKey(attributeName = "artist")
        var artist: String? = null,

        @get:DynamoDBRangeKey(attributeName = "title")
        var title: String? = null,

        var genre: String? = null
) {

    @Id
    private var id: MusicId? = null
        get() = MusicId(artist, title)
}

@DynamoDBDocument
data class MusicId(

        @field:DynamoDBHashKey(attributeName = "artist")
        var artist: String? = null,

        @field:DynamoDBRangeKey(attributeName = "title")
        var title: String? = null
) : Serializable

更改实体并调用后：

musicRepository.findByArtistAndTitleStartingWith("Djavan", "Eu te devoro")

我得到了 AWS 的正确调用 api。

"{"TableName":"music","ConsistentRead":true,"KeyConditions":{"artist":{"AttributeValueList":[{"S":"Djavan"}],"ComparisonOperator":"EQ"},"title":{"AttributeValueList":[{"S":"Eu te devoro"}],"ComparisonOperator":"BEGINS_WITH"}},"ScanIndexForward":true}"

Spring Data DynamoDB - 存储库执行扫描而不是查询

Spring Data DynamoDB - Respository performing scan instead of query

java

spring-data

amazon-dynamodb

预期行为

实际行为

重现问题的步骤

规格