com.impetus.client.cassandra.datahandler

Interface CassandraDataHandler

All Known Implementing Classes:

ThriftDataHandler

public interface CassandraDataHandler

Defines low level translation methods for Cassandra.

Author:

amresh.singh

Method Summary

Methods

Modifier and Type	Method and Description
List<Object>	fromThriftRow(Class<?> clazz, EntityMetadata m, List<String> relationNames, boolean isWrapReq, org.apache.cassandra.thrift.ConsistencyLevel consistencyLevel, Object... rowIds) From thrift row.
Object	fromThriftRow(Class<?> clazz, EntityMetadata m, Object rowKey, List<String> relationNames, boolean isWrapReq, org.apache.cassandra.thrift.ConsistencyLevel consistencyLevel) From thrift row.
<E> E	fromThriftRow(Class<E> clazz, EntityMetadata m, DataRow<org.apache.cassandra.thrift.SuperColumn> tr) From thrift row.
Object	populateEntity(ThriftRow tr, EntityMetadata m, Object entity, List<String> relationNames, boolean isWrapReq) Populate entity.
Collection<ThriftRow>	toThriftRow(Object e, Object id, EntityMetadata m, String columnFamily, Object columnTTLs) To thrift row.

Method Detail

fromThriftRow

<E> E fromThriftRow(Class<E> clazz,
                  EntityMetadata m,
                  DataRow<org.apache.cassandra.thrift.SuperColumn> tr)
                throws Exception

From thrift row.

Type Parameters:

E - the element type

Parameters:

clazz - the clazz

m - the m

tr - the tr

Returns:

the e

Throws:

Exception - the exception

fromThriftRow

List<Object> fromThriftRow(Class<?> clazz,
                         EntityMetadata m,
                         List<String> relationNames,
                         boolean isWrapReq,
                         org.apache.cassandra.thrift.ConsistencyLevel consistencyLevel,
                         Object... rowIds)
                           throws Exception

From thrift row.

Parameters:

clazz - the clazz

m - the m

relationNames - the relation names

isWrapReq - the is wrap req

consistencyLevel - the consistency level

rowIds - the row ids

Returns:

the list

Throws:

Exception - the exception

fromThriftRow

Object fromThriftRow(Class<?> clazz,
                   EntityMetadata m,
                   Object rowKey,
                   List<String> relationNames,
                   boolean isWrapReq,
                   org.apache.cassandra.thrift.ConsistencyLevel consistencyLevel)
                     throws Exception

From thrift row.

Parameters:

clazz - the clazz

m - the m

rowKey - the row key

relationNames - the relation names

isWrapReq - the is wrap req

consistencyLevel - the consistency level

Returns:

the object

Throws:

Exception - the exception

populateEntity

Object populateEntity(ThriftRow tr,
                    EntityMetadata m,
                    Object entity,
                    List<String> relationNames,
                    boolean isWrapReq)

Populate entity.

Parameters:

tr - the tr

m - the m

relationNames - the relation names

isWrapReq - the is wrap req

Returns:

the object

toThriftRow

Collection<ThriftRow> toThriftRow(Object e,
                                Object id,
                                EntityMetadata m,
                                String columnFamily,
                                Object columnTTLs)
                                  throws Exception

To thrift row.

Parameters:

e - the e

id - the id

m - the m

columnFamily - the column family

columnTTLs - TODO

Returns:

the collection

Throws:

Exception - the exception