com.yahoo.ycsb.db
Class CassandraClient

java.lang.Object
  extended by com.yahoo.ycsb.DB
      extended by com.yahoo.ycsb.db.CassandraClient

public class CassandraClient
extends DB

XXXX if we do replication, fix the consistency levels


Field Summary
static java.lang.String CONNECTION_RETRY_PROPERTY
           
static java.lang.String CONNECTION_RETRY_PROPERTY_DEFAULT
           
 int ConnectionRetries
           
static int Error
           
static int Ok
           
static java.lang.String OPERATION_RETRY_PROPERTY
           
static java.lang.String OPERATION_RETRY_PROPERTY_DEFAULT
           
 int OperationRetries
           
 
Constructor Summary
CassandraClient()
           
 
Method Summary
 void cleanup()
          Cleanup any state for this DB.
 int delete(java.lang.String table, java.lang.String key)
          Delete a record from the database.
 void init()
          Initialize any state for this DB.
 int insert(java.lang.String table, java.lang.String key, java.util.HashMap<java.lang.String,java.lang.String> values)
          Insert a record in the database.
static void main(java.lang.String[] args)
           
 int read(java.lang.String table, java.lang.String key, java.util.Set<java.lang.String> fields, java.util.HashMap<java.lang.String,java.lang.String> result)
          Read a record from the database.
 int scan(java.lang.String table, java.lang.String startkey, int recordcount, java.util.Set<java.lang.String> fields, java.util.Vector<java.util.HashMap<java.lang.String,java.lang.String>> result)
          Perform a range scan for a set of records in the database.
 int update(java.lang.String table, java.lang.String key, java.util.HashMap<java.lang.String,java.lang.String> values)
          Update a record in the database.
 
Methods inherited from class com.yahoo.ycsb.DB
getProperties, setProperties
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

Ok

public static final int Ok
See Also:
Constant Field Values

Error

public static final int Error
See Also:
Constant Field Values

ConnectionRetries

public int ConnectionRetries

OperationRetries

public int OperationRetries

CONNECTION_RETRY_PROPERTY

public static final java.lang.String CONNECTION_RETRY_PROPERTY
See Also:
Constant Field Values

CONNECTION_RETRY_PROPERTY_DEFAULT

public static final java.lang.String CONNECTION_RETRY_PROPERTY_DEFAULT
See Also:
Constant Field Values

OPERATION_RETRY_PROPERTY

public static final java.lang.String OPERATION_RETRY_PROPERTY
See Also:
Constant Field Values

OPERATION_RETRY_PROPERTY_DEFAULT

public static final java.lang.String OPERATION_RETRY_PROPERTY_DEFAULT
See Also:
Constant Field Values
Constructor Detail

CassandraClient

public CassandraClient()
Method Detail

init

public void init()
          throws DBException
Initialize any state for this DB. Called once per DB instance; there is one DB instance per client thread.

Overrides:
init in class DB
Throws:
DBException

cleanup

public void cleanup()
             throws DBException
Cleanup any state for this DB. Called once per DB instance; there is one DB instance per client thread.

Overrides:
cleanup in class DB
Throws:
DBException

read

public int read(java.lang.String table,
                java.lang.String key,
                java.util.Set<java.lang.String> fields,
                java.util.HashMap<java.lang.String,java.lang.String> result)
Read a record from the database. Each field/value pair from the result will be stored in a HashMap.

Specified by:
read in class DB
Parameters:
table - The name of the table
key - The record key of the record to read.
fields - The list of fields to read, or null for all of them
result - A HashMap of field/value pairs for the result
Returns:
Zero on success, a non-zero error code on error

scan

public int scan(java.lang.String table,
                java.lang.String startkey,
                int recordcount,
                java.util.Set<java.lang.String> fields,
                java.util.Vector<java.util.HashMap<java.lang.String,java.lang.String>> result)
Perform a range scan for a set of records in the database. Each field/value pair from the result will be stored in a HashMap.

Specified by:
scan in class DB
Parameters:
table - The name of the table
startkey - The record key of the first record to read.
recordcount - The number of records to read
fields - The list of fields to read, or null for all of them
result - A Vector of HashMaps, where each HashMap is a set field/value pairs for one record
Returns:
Zero on success, a non-zero error code on error

update

public int update(java.lang.String table,
                  java.lang.String key,
                  java.util.HashMap<java.lang.String,java.lang.String> values)
Update a record in the database. Any field/value pairs in the specified values HashMap will be written into the record with the specified record key, overwriting any existing values with the same field name.

Specified by:
update in class DB
Parameters:
table - The name of the table
key - The record key of the record to write.
values - A HashMap of field/value pairs to update in the record
Returns:
Zero on success, a non-zero error code on error

insert

public int insert(java.lang.String table,
                  java.lang.String key,
                  java.util.HashMap<java.lang.String,java.lang.String> values)
Insert a record in the database. Any field/value pairs in the specified values HashMap will be written into the record with the specified record key.

Specified by:
insert in class DB
Parameters:
table - The name of the table
key - The record key of the record to insert.
values - A HashMap of field/value pairs to insert in the record
Returns:
Zero on success, a non-zero error code on error

delete

public int delete(java.lang.String table,
                  java.lang.String key)
Delete a record from the database.

Specified by:
delete in class DB
Parameters:
table - The name of the table
key - The record key of the record to delete.
Returns:
Zero on success, a non-zero error code on error

main

public static void main(java.lang.String[] args)