scray.cassandra.rows.CassandraGenericIndexRowMappers.scala Maven / Gradle / Ivy

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scray adapter to r/w Cassandra column families

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//// Licensed under the Apache License, Version 2.0 (the "License");
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////
//// http://www.apache.org/licenses/LICENSE-2.0
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//package scray.cassandra.rows
//
//import com.twitter.storehaus.cassandra.cql.CQLCassandraCollectionStore
//import scray.querying.description.SimpleRow
//import scray.querying.description.TableIdentifier
//import scala.collection.mutable.ArrayBuffer
//import scray.querying.description.Row
//import scray.querying.description.RowColumn
//import scray.cassandra.extractors.CassandraExtractor
//import scray.querying.description.Column
//import shapeless._
//import com.websudos.phantom.CassandraPrimitive
//import com.twitter.storehaus.cassandra.cql.CassandraTupleStore
//import scray.common.serialization.BatchID
//
//
//object CassandraGenericIndexRowMappers {
//
//  // Cassandra types for time indexes
//  type TimeIndexRK = Int :: HNil
//  type TimeIndexCK = Long :: BatchID :: HNil
//  // inner type doesn't really matter, as there is type erasure at runtime
//  type TimeIndexValueType = Set[Any]
//  type TimeIndexRS = CassandraPrimitive[Int] :: HNil
//  type TimeIndexCS = CassandraPrimitive[Long] :: CassandraPrimitive[BatchID] :: HNil
//  type TimeIndexStore = CQLCassandraCollectionStore[TimeIndexRK, TimeIndexCK,
//      TimeIndexValueType, Any, TimeIndexRS, TimeIndexCS]
//  
//  def timeIndexRowMapper(store: TimeIndexStore, tableName: Option[String]): 
//        (((TimeIndexRK, TimeIndexCK), TimeIndexValueType)) => Row = (entry) => {
//    val ti = tableName.map(TableIdentifier(CassandraExtractor.DB_ID, store.columnFamily.session.getKeyspacename, _)).getOrElse {
//      TableIdentifier(CassandraExtractor.DB_ID, store.columnFamily.session.getKeyspacename, store.columnFamily.getName)}
//    val rows = new ArrayBuffer[RowColumn[_]]()
//    // scalastyle:off magic.number
//    rows += RowColumn(Column(store.rowkeyColumnNames(0), ti), entry._1._1.head)
//    rows += RowColumn(Column(store.colkeyColumnNames(0), ti), entry._1._2.head)
//    rows += RowColumn(Column(store.colkeyColumnNames(1), ti), entry._1._2.tail.head)
//    rows += RowColumn(Column(store.valueColumnName, ti), entry._2)
//    // scalastyle:on magic.number
//    SimpleRow(rows)
//  }
//        
//  // Cassandra types for a*/*a indexes
//}