Java 利用Astyanax突变批将Map插入Cassandra CQL3柱族

我有一个Cassandra CQL3柱族，其结构如下

CREATE TABLE mytable(
  A text,
  B text,
  C text,
  mymap map<text,text>,
  D text,
  PRIMARY KEY (A,B,C)
);

虽然我可以通过在各个字段上创建带有@Component的POJO将数据插入其他列（即A、B、C、D），但我不确定如何处理映射插入，即插入mymap列

我创建的示例POJO是

public class TestColumn {

  @Component(ordinal = 0)
  String bComponent;

  @Component(ordinal = 1)
  String cComponent;

  @Component(ordinal = 2)
  String columnName;

  public TestColumn() {
  }
}

插入代码如下所示

AnnotatedCompositeSerializer columnSerializer = new  AnnotatedCompositeSerializer(TestColumn.class);
ColumnFamily columnFamily = new ColumnFamily("mytable", StringSerializer.get(), columnSerializer);

final MutationBatch m = keyspace.prepareMutationBatch();

ColumnListMutation columnListMutation = m.withRow(columnFamily, "AVal");

columnListMutation.putColumn(new TestColumn("BVal", "CVal", null),  ByteBufferUtil.EMPTY_BYTE_BUFFER,
                timeToLive);
columnListMutation.putColumn(new ApiAvColumn("BVal", "CVal", "D"), "DVal",
                timeToLive);
m.execute;

---

我应该如何准确地修改上述代码，以便也可以插入映射值？

我们通过使用DataStax Java驱动程序而不是Astyanax解决了这个问题。

不要对Cassandra 2.0中的批插入抱太大希望。我尝试过类似的情况，但仍然比突变批次慢1000倍。

AnnotatedCompositeSerializer columnSerializer = new  AnnotatedCompositeSerializer(TestColumn.class);
ColumnFamily columnFamily = new ColumnFamily("mytable", StringSerializer.get(), columnSerializer);

final MutationBatch m = keyspace.prepareMutationBatch();

ColumnListMutation columnListMutation = m.withRow(columnFamily, "AVal");

columnListMutation.putColumn(new TestColumn("BVal", "CVal", null),  ByteBufferUtil.EMPTY_BYTE_BUFFER,
                timeToLive);
columnListMutation.putColumn(new ApiAvColumn("BVal", "CVal", "D"), "DVal",
                timeToLive);
m.execute;