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package repositories | ||
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import com.datastax.driver.core.querybuilder.QueryBuilder | ||
import com.datastax.driver.core.querybuilder.QueryBuilder._ | ||
import com.datastax.driver.core.{Row, Session} | ||
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abstract class CassandraRepository[M, I](session: Session, tablename: String, partitionKeyName: String) | ||
extends Repository[M, I] { | ||
def rowToModel(row: Row): M | ||
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def getOneRowBySinglePartitionKeyId(partitionKeyValue: I): Row = { | ||
val selectStmt = | ||
select() | ||
.from(tablename) | ||
.where(QueryBuilder.eq(partitionKeyName, partitionKeyValue)) | ||
.limit(1) | ||
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val resultSet = session.execute(selectStmt) | ||
val row = resultSet.one() | ||
row | ||
} | ||
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override def getOneById(id: I): M = { | ||
val row = getOneRowBySinglePartitionKeyId(id) | ||
rowToModel(row) | ||
} | ||
} |
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package repositories | ||
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import com.datastax.driver.core.{Row, Session} | ||
import models.ProductModel | ||
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class ProductsRepository(session: Session) | ||
extends CassandraRepository[ProductModel, Int](session, "products", "id") { | ||
override def rowToModel(row: Row): ProductModel = { | ||
ProductModel( | ||
row.getInt("id"), | ||
row.getString("name") | ||
) | ||
} | ||
} |