com.websudos.phantom.column.ListColumn.scala Maven / Gradle / Ivy

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/*
 * Copyright 2013-2015 Websudos, Limited.
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * - Explicit consent must be obtained from the copyright owner, Outworkers Limited before any redistribution is made.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package com.websudos.phantom.column

import com.datastax.driver.core.Row
import com.websudos.phantom.CassandraTable
import com.websudos.phantom.builder.QueryBuilder
import com.websudos.phantom.builder.QueryBuilder.Utils
import com.websudos.phantom.builder.primitives.Primitive
import com.websudos.phantom.builder.query.CQLQuery

import scala.annotation.implicitNotFound
import scala.collection.JavaConverters._
import scala.util.{Success, Try}


abstract class AbstractListColumn[Owner <: CassandraTable[Owner, Record], Record, RR](table: CassandraTable[Owner, Record])
  extends Column[Owner, Record, List[RR]](table) with CollectionValueDefinition[RR] {

  override def asCql(v: List[RR]): String = Utils.collection(v.map(valueAsCql)).queryString

  override def apply(r: Row): List[RR] = {
    parse(r).getOrElse(Nil)
  }
}

@implicitNotFound(msg = "Type ${RR} must be a Cassandra primitive")
class ListColumn[Owner <: CassandraTable[Owner, Record], Record, RR : Primitive](table: CassandraTable[Owner, Record])
    extends AbstractListColumn[Owner, Record, RR](table) with PrimitiveCollectionValue[RR] {

  override val valuePrimitive = Primitive[RR]

  override val cassandraType = QueryBuilder.Collections.listType(valuePrimitive.cassandraType).queryString

  override def qb: CQLQuery = CQLQuery(name).forcePad.append(cassandraType)

  override def valueAsCql(v: RR): String = valuePrimitive.asCql(v)

  override def fromString(value: String): RR = valuePrimitive.fromString(value)

  override def parse(r: Row): Try[List[RR]] = {
    if (r.isNull(name)) {
      Success(Nil)
    } else {
      Success(r.getList(name, Primitive[RR].clz.asInstanceOf[Class[RR]]).asScala.toList)
    }
  }
}