/**
* Decrement counter by 1
*
* @param rawID raw name
* @param columnFamily column family name
* @param columnName name of column
* @param keyspace keyspace
* @throws CassandraDataAccessException
*/
public static void decrementCounter(
String columnName, String columnFamily, String rawID, Keyspace keyspace, long decrementBy)
throws CassandraDataAccessException {
try {
Mutator<String> mutator = HFactory.createMutator(keyspace, StringSerializer.get());
mutator.decrementCounter(rawID, columnFamily, columnName, decrementBy);
mutator.execute();
} catch (Exception e) {
throw new CassandraDataAccessException("Error while accessing:" + columnFamily, e);
}
}
/**
* Insert a raw-column for counting a property (row is property, column is item)
*
* @param cfName column family name
* @param counterRowName name of row
* @param queueColumn name of column
* @param keyspace key space name
* @throws CassandraDataAccessException
*/
public static void insertCounterColumn(
String cfName, String counterRowName, String queueColumn, Keyspace keyspace)
throws CassandraDataAccessException {
try {
Mutator<String> mutator = HFactory.createMutator(keyspace, StringSerializer.get());
// inserting counter column
mutator.insertCounter(
counterRowName,
cfName,
HFactory.createCounterColumn(queueColumn, 0L, StringSerializer.get()));
mutator.execute();
CounterQuery<String, String> counter =
new ThriftCounterColumnQuery<String, String>(
keyspace, stringSerializer, stringSerializer);
counter.setColumnFamily(cfName).setKey(counterRowName).setName(queueColumn);
} catch (Exception e) {
throw new CassandraDataAccessException("Error while inserting data to:" + cfName, e);
}
}
/**
* Class <code>CassandraDataAccessHelper</code> Encapsulate the Cassandra DataAccessLogic used in
* CassandraMessageStore
*/
public class CassandraDataAccessHelper {
private static final String USERNAME_KEY = "username";
private static final String PASSWORD_KEY = "password";
/** Serializes used for Cassandra data operations */
private static StringSerializer stringSerializer = StringSerializer.get();
private static LongSerializer longSerializer = LongSerializer.get();
private static BytesArraySerializer bytesArraySerializer = BytesArraySerializer.get();
private static IntegerSerializer integerSerializer = IntegerSerializer.get();
private static ByteBufferSerializer byteBufferSerializer = ByteBufferSerializer.get();
/**
* Create a Cassandra Cluster instance given the connection details
*
* @param userName userName to connect to the cassandra
* @param password password to connect to cassandra
* @param clusterName Cluster name
* @param connectionString cassandra connection string
* @return Cluster instance
* @throws CassandraDataAccessException In case of and error in accessing database or data error
*/
public static Cluster createCluster(
String userName, String password, String clusterName, String connectionString)
throws CassandraDataAccessException {
if (userName == null || password == null) {
throw new CassandraDataAccessException(
"Can't create cluster with empty userName or Password");
}
if (clusterName == null) {
throw new CassandraDataAccessException("Can't create cluster with empty cluster name");
}
if (connectionString == null) {
throw new CassandraDataAccessException("Can't create cluster with empty connection string");
}
Map<String, String> credentials = new HashMap<String, String>();
credentials.put(USERNAME_KEY, userName);
credentials.put(PASSWORD_KEY, password);
CassandraHostConfigurator hostConfigurator = new CassandraHostConfigurator(connectionString);
hostConfigurator.setMaxActive(2000);
Cluster cluster = HFactory.getCluster(clusterName);
if (cluster == null) {
cluster = HFactory.createCluster(clusterName, hostConfigurator, credentials);
}
return cluster;
}
/**
* Create a Column family in a Given Cluster instance
*
* @param name ColumnFamily Name
* @param keySpace KeySpace name
* @param cluster Cluster instance
* @param comparatorType Comparator
* @throws CassandraDataAccessException In case of an Error accessing database or data error
*/
public static void createColumnFamily(
String name, String keySpace, Cluster cluster, String comparatorType)
throws CassandraDataAccessException {
KeyspaceDefinition ksDef = cluster.describeKeyspace(keySpace);
if (ksDef == null) {
throw new CassandraDataAccessException(
"Can't create Column family, keyspace " + keySpace + " does not exist");
}
ColumnFamilyDefinition cfDef =
new ThriftCfDef(keySpace, /*"Queue"*/ name, ComparatorType.getByClassName(comparatorType));
List<ColumnFamilyDefinition> cfDefsList = ksDef.getCfDefs();
HashSet<String> cfNames = new HashSet<String>();
for (ColumnFamilyDefinition columnFamilyDefinition : cfDefsList) {
cfNames.add(columnFamilyDefinition.getName());
}
if (!cfNames.contains(name)) {
cluster.addColumnFamily(cfDef, true);
}
}
/**
* Create a Column family for cassandra counters in a given Cluster intance
*
* @param name ColumnFamily Name
* @param keySpace KeySpace name
* @param cluster Cluster instance
* @throws CassandraDataAccessException In case of an Error accessing database or data error
*/
public static void createCounterColumnFamily(String name, String keySpace, Cluster cluster)
throws CassandraDataAccessException {
KeyspaceDefinition ksDef = cluster.describeKeyspace(keySpace);
if (ksDef == null) {
throw new CassandraDataAccessException(
"Can't create Column family, keyspace " + keySpace + " does not exist");
}
ColumnFamilyDefinition cfDef =
HFactory.createColumnFamilyDefinition(keySpace, name, ComparatorType.COUNTERTYPE);
cfDef.setComparatorType(ComparatorType.UTF8TYPE);
cfDef.setDefaultValidationClass(ComparatorType.COUNTERTYPE.getClassName());
cfDef.setColumnType(ColumnType.STANDARD);
List<ColumnFamilyDefinition> cfDefsList = ksDef.getCfDefs();
HashSet<String> cfNames = new HashSet<String>();
for (ColumnFamilyDefinition columnFamilyDefinition : cfDefsList) {
cfNames.add(columnFamilyDefinition.getName());
}
if (!cfNames.contains(name)) {
cluster.addColumnFamily(cfDef, true);
}
}
/**
* Insert a raw-column for counting a property (row is property, column is item)
*
* @param cfName column family name
* @param counterRowName name of row
* @param queueColumn name of column
* @param keyspace key space name
* @throws CassandraDataAccessException
*/
public static void insertCounterColumn(
String cfName, String counterRowName, String queueColumn, Keyspace keyspace)
throws CassandraDataAccessException {
try {
Mutator<String> mutator = HFactory.createMutator(keyspace, StringSerializer.get());
// inserting counter column
mutator.insertCounter(
counterRowName,
cfName,
HFactory.createCounterColumn(queueColumn, 0L, StringSerializer.get()));
mutator.execute();
CounterQuery<String, String> counter =
new ThriftCounterColumnQuery<String, String>(
keyspace, stringSerializer, stringSerializer);
counter.setColumnFamily(cfName).setKey(counterRowName).setName(queueColumn);
} catch (Exception e) {
throw new CassandraDataAccessException("Error while inserting data to:" + cfName, e);
}
}
/**
* remove allocated raw-column space for counter
*
* @param cfName column family name
* @param counterRowName name of row
* @param queueColumn name of column
* @param keyspace key space name
* @throws CassandraDataAccessException
*/
public static void removeCounterColumn(
String cfName, String counterRowName, String queueColumn, Keyspace keyspace)
throws CassandraDataAccessException {
try {
Mutator<String> mutator = HFactory.createMutator(keyspace, StringSerializer.get());
mutator.deleteCounter(counterRowName, cfName, queueColumn, stringSerializer);
mutator.execute();
CounterQuery<String, String> counter =
new ThriftCounterColumnQuery<String, String>(
keyspace, stringSerializer, stringSerializer);
counter.setColumnFamily(cfName).setKey(counterRowName).setName(queueColumn);
} catch (Exception e) {
throw new CassandraDataAccessException("Error while accessing:" + cfName, e);
}
}
/**
* Increment counter by given value
*
* @param rawID raw name
* @param columnFamily column family name
* @param columnName name of column
* @param keyspace keyspace
* @param incrementBy value to increase by
* @throws CassandraDataAccessException
*/
public static void incrementCounter(
String columnName, String columnFamily, String rawID, Keyspace keyspace, long incrementBy)
throws CassandraDataAccessException {
try {
Mutator<String> mutator = HFactory.createMutator(keyspace, StringSerializer.get());
mutator.incrementCounter(rawID, columnFamily, columnName, incrementBy);
mutator.execute();
} catch (Exception e) {
throw new CassandraDataAccessException("Error while accessing:" + columnFamily, e);
}
}
/**
* Decrement counter by 1
*
* @param rawID raw name
* @param columnFamily column family name
* @param columnName name of column
* @param keyspace keyspace
* @throws CassandraDataAccessException
*/
public static void decrementCounter(
String columnName, String columnFamily, String rawID, Keyspace keyspace, long decrementBy)
throws CassandraDataAccessException {
try {
Mutator<String> mutator = HFactory.createMutator(keyspace, StringSerializer.get());
mutator.decrementCounter(rawID, columnFamily, columnName, decrementBy);
mutator.execute();
} catch (Exception e) {
throw new CassandraDataAccessException("Error while accessing:" + columnFamily, e);
}
}
/**
* @param keyspace name of key space
* @param columnFamily column family name
* @param key key value
* @param cloumnName column name
* @return long count value
* @throws CassandraDataAccessException
*/
public static long getCountValue(
Keyspace keyspace, String columnFamily, String cloumnName, String key)
throws CassandraDataAccessException {
try {
CounterQuery<String, String> query =
HFactory.createCounterColumnQuery(keyspace, stringSerializer, stringSerializer);
query.setColumnFamily(columnFamily).setKey(key).setName(cloumnName);
HCounterColumn<String> counter = query.execute().get();
return counter.getValue();
} catch (Exception e) {
throw new CassandraDataAccessException("Error while accessing:" + columnFamily, e);
}
}
public static Keyspace createKeySpace(Cluster cluster, String keySpace) {
Keyspace keyspace;
// Define the keySpace
KeyspaceDefinition definition = new ThriftKsDef(keySpace);
KeyspaceDefinition def = cluster.describeKeyspace(keySpace);
if (def == null) {
// Adding keySpace to the cluster
cluster.addKeyspace(definition, true);
}
keyspace = HFactory.createKeyspace(keySpace, cluster);
CassandraConsistencyLevelPolicy policy = new CassandraConsistencyLevelPolicy();
keyspace.setConsistencyLevelPolicy(policy);
return keyspace;
}
/**
* Get List of Strings in a Given ROW in a Cassandra Column Family Here we assume that the columns
* in a given row have string data and key and value in the given column in that row have same
* values.
*
* @param columnFamilyName Name of the column Family
* @param rowName Row name
* @param keyspace keySpace
* @return List of string in that given row.
* @throws CassandraDataAccessException In case of database access error or data error
*/
public static List<String> getRowList(String columnFamilyName, String rowName, Keyspace keyspace)
throws CassandraDataAccessException {
ArrayList<String> rowList = new ArrayList<String>();
if (keyspace == null) {
throw new CassandraDataAccessException("Can't access Data , no keyspace provided ");
}
if (columnFamilyName == null || rowName == null) {
throw new CassandraDataAccessException(
"Can't access data with columnFamily =" + columnFamilyName + " and rowName=" + rowName);
}
try {
SliceQuery<String, String, String> sliceQuery =
HFactory.createSliceQuery(keyspace, stringSerializer, stringSerializer, stringSerializer);
sliceQuery.setKey(rowName);
sliceQuery.setColumnFamily(columnFamilyName);
sliceQuery.setRange("", "", false, 10000);
QueryResult<ColumnSlice<String, String>> result = sliceQuery.execute();
ColumnSlice<String, String> columnSlice = result.get();
for (HColumn<String, String> column : columnSlice.getColumns()) {
rowList.add(column.getName());
}
} catch (Exception e) {
throw new CassandraDataAccessException(
"Error while accessing data from :" + columnFamilyName, e);
}
return rowList;
}
public static List<String> getDestinationQueueNamesFromCounterColumns(
String columnFamilyName, String rowName, Keyspace keyspace)
throws CassandraDataAccessException {
ArrayList<String> rowList = new ArrayList<String>();
if (keyspace == null) {
throw new CassandraDataAccessException("Can't access Data , no keyspace provided ");
}
if (columnFamilyName == null || rowName == null) {
throw new CassandraDataAccessException(
"Can't access data with columnFamily =" + columnFamilyName + " and rowName=" + rowName);
}
try {
SliceCounterQuery<String, String> sliceQuery =
HFactory.createCounterSliceQuery(keyspace, stringSerializer, stringSerializer);
sliceQuery.setKey(rowName);
sliceQuery.setColumnFamily(columnFamilyName);
sliceQuery.setRange("", "", false, Integer.MAX_VALUE);
QueryResult<CounterSlice<String>> result = sliceQuery.execute();
CounterSlice<String> columnSlice = result.get();
for (HCounterColumn<String> column : columnSlice.getColumns()) {
rowList.add(column.getName());
}
} catch (Exception e) {
throw new CassandraDataAccessException(
"Error while accessing data from :" + columnFamilyName, e);
}
return rowList;
}
/**
* Get the value of a given column in a Given ROW in a Cassandra Column Family Here we assume that
* the columns in a given row have string data and key and value in the given column in that row
* have same values.
*
* @param columnFamilyName Name of the column Family
* @param rowName Row name
* @param keyspace keySpace
* @param columnName Name of the column
* @return vlaue of a given column in that given row.
* @throws CassandraDataAccessException In case of database access error or data error
*/
public static String getColumnValue(
String columnFamilyName, String rowName, Keyspace keyspace, String columnName)
throws CassandraDataAccessException {
ArrayList<String> rowList = new ArrayList<String>();
String value = null;
if (keyspace == null) {
throw new CassandraDataAccessException("Can't access Data , no keyspace provided ");
}
if (columnFamilyName == null || rowName == null) {
throw new CassandraDataAccessException(
"Can't access data with columnFamily =" + columnFamilyName + " and rowName=" + rowName);
}
try {
SliceQuery<String, String, String> sliceQuery =
HFactory.createSliceQuery(keyspace, stringSerializer, stringSerializer, stringSerializer);
sliceQuery.setKey(rowName);
sliceQuery.setColumnFamily(columnFamilyName);
sliceQuery.setRange("", "", false, 10000);
QueryResult<ColumnSlice<String, String>> result = sliceQuery.execute();
ColumnSlice<String, String> columnSlice = result.get();
for (HColumn<String, String> column : columnSlice.getColumns()) {
if (column.getName().equalsIgnoreCase(columnName)) {
value = column.getValue();
break;
}
}
} catch (Exception e) {
throw new CassandraDataAccessException(
"Error while accessing data from :" + columnFamilyName, e);
}
return value;
}
/**
* Get set of messages in a column family
*
* @param queueName QueueName
* @param columnFamilyName ColumnFamilyName
* @param keyspace Cassandra KeySpace
* @param lastProcessedId Last processed Message id to use as a off set
* @param count max message count limit
* @return ColumnSlice which contain the messages
* @throws CassandraDataAccessException
*/
public static ColumnSlice<Long, byte[]> getMessagesFromQueue(
String queueName, String columnFamilyName, Keyspace keyspace, long lastProcessedId, int count)
throws CassandraDataAccessException {
if (keyspace == null) {
throw new CassandraDataAccessException("Can't access Data , no keyspace provided ");
}
if (columnFamilyName == null || queueName == null) {
throw new CassandraDataAccessException(
"Can't access data with columnFamily = "
+ columnFamilyName
+ " and queueName="
+ queueName);
}
try {
SliceQuery<String, Long, byte[]> sliceQuery =
HFactory.createSliceQuery(
keyspace, stringSerializer, longSerializer, bytesArraySerializer);
sliceQuery.setKey(queueName);
sliceQuery.setRange(lastProcessedId + 1, Long.MAX_VALUE, false, count);
sliceQuery.setColumnFamily(columnFamilyName);
QueryResult<ColumnSlice<Long, byte[]>> result = sliceQuery.execute();
ColumnSlice<Long, byte[]> columnSlice = result.get();
return columnSlice;
} catch (Exception e) {
throw new CassandraDataAccessException(
"Error while getting data from " + columnFamilyName, e);
}
}
/**
* Get set of messages in a column family
*
* @param queueName QueueName
* @param columnFamilyName ColumnFamilyName
* @param keyspace Cassandra KeySpace
* @param count max message count limit
* @return ColumnSlice which contain the messages
* @throws CassandraDataAccessException
*/
public static ColumnSlice<Long, byte[]> getMessagesFromQueue(
String queueName, String columnFamilyName, Keyspace keyspace, int count)
throws CassandraDataAccessException {
if (keyspace == null) {
throw new CassandraDataAccessException("Can't access Data , no keyspace provided ");
}
if (columnFamilyName == null || queueName == null) {
throw new CassandraDataAccessException(
"Can't access data with columnFamily = "
+ columnFamilyName
+ " and queueName="
+ queueName);
}
try {
SliceQuery<String, Long, byte[]> sliceQuery =
HFactory.createSliceQuery(
keyspace, stringSerializer, longSerializer, bytesArraySerializer);
sliceQuery.setKey(queueName);
sliceQuery.setRange((long) 0, Long.MAX_VALUE, false, count);
sliceQuery.setColumnFamily(columnFamilyName);
QueryResult<ColumnSlice<Long, byte[]>> result = sliceQuery.execute();
ColumnSlice<Long, byte[]> columnSlice = result.get();
return columnSlice;
} catch (Exception e) {
throw new CassandraDataAccessException(
"Error while getting data from " + columnFamilyName, e);
}
}
/**
* Get Number of <String,String> type columns in a given row in a cassandra column family
*
* @param rowName row Name we are querying for
* @param columnFamilyName columnFamilName
* @param keyspace
* @param count
* @return
*/
public static ColumnSlice<String, String> getStringTypeColumnsInARow(
String rowName, String columnFamilyName, Keyspace keyspace, int count)
throws CassandraDataAccessException {
if (keyspace == null) {
throw new CassandraDataAccessException("Can't access Data , no keyspace provided ");
}
if (columnFamilyName == null || rowName == null) {
throw new CassandraDataAccessException(
"Can't access data with columnFamily = " + columnFamilyName + " and rowName=" + rowName);
}
try {
SliceQuery sliceQuery =
HFactory.createSliceQuery(keyspace, stringSerializer, stringSerializer, stringSerializer);
sliceQuery.setKey(rowName);
sliceQuery.setColumnFamily(columnFamilyName);
sliceQuery.setRange("", "", false, count);
QueryResult<ColumnSlice<String, String>> result = sliceQuery.execute();
ColumnSlice<String, String> columnSlice = result.get();
return columnSlice;
} catch (Exception e) {
throw new CassandraDataAccessException(
"Error while getting data from : " + columnFamilyName, e);
}
}
/**
* Get a HColumn<Long, byte[]> with a given key in a given row in a given column Family
*
* @param rowName name of the row
* @param columnFamily column Family name
* @param key long type key of the column we are looking for
* @param keyspace cassandra keySpace instance
* @return query result as a cassandra column
* @throws CassandraDataAccessException in case of an Error when accessing data
*/
public static HColumn<Long, byte[]> getLongByteArrayColumnInARow(
String rowName, String columnFamily, long key, Keyspace keyspace)
throws CassandraDataAccessException {
if (keyspace == null) {
throw new CassandraDataAccessException("Can't access Data , no keyspace provided ");
}
if (columnFamily == null || rowName == null) {
throw new CassandraDataAccessException(
"Can't access data with columnFamily = " + columnFamily + " and rowName=" + rowName);
}
try {
ColumnQuery columnQuery =
HFactory.createColumnQuery(
keyspace, stringSerializer, longSerializer, bytesArraySerializer);
columnQuery.setColumnFamily(columnFamily);
columnQuery.setKey(rowName);
columnQuery.setName(key);
QueryResult<HColumn<Long, byte[]>> result = columnQuery.execute();
HColumn<Long, byte[]> column = result.get();
return column;
} catch (Exception e) {
throw new CassandraDataAccessException(
"Error while executing quary for HColumn<Long, byte[]> with key ="
+ key
+ " in column Family = "
+ columnFamily,
e);
}
}
/**
* Add Message to a Given Queue in Cassandra
*
* @param columnFamily ColumnFamily name
* @param queue queue name
* @param messageId Message id
* @param message message in bytes
* @param keyspace Cassandra KeySpace
* @throws CassandraDataAccessException In case of database access error
*/
public static void addMessageToQueue(
String columnFamily, String queue, String messageId, byte[] message, Keyspace keyspace)
throws CassandraDataAccessException {
if (keyspace == null) {
throw new CassandraDataAccessException("Can't add Data , no mutator provided ");
}
if (columnFamily == null || queue == null || messageId == null || message == null) {
throw new CassandraDataAccessException(
"Can't add data with columnFamily = "
+ columnFamily
+ " and queue="
+ queue
+ " message id = "
+ messageId
+ " message = "
+ message);
}
try {
Mutator<String> mutator = HFactory.createMutator(keyspace, stringSerializer);
mutator.addInsertion(
queue.trim(),
columnFamily,
HFactory.createColumn(messageId, message, stringSerializer, bytesArraySerializer));
mutator.execute();
} catch (Exception e) {
throw new CassandraDataAccessException("Error while adding message to Queue", e);
}
}
/**
* Add Message to a Given Queue in Cassandra
*
* @param columnFamily ColumnFamily name
* @param queue queue name
* @param messageId Message id
* @param message message in bytes
* @param keyspace Cassandra KeySpace
* @throws CassandraDataAccessException In case of database access error
*/
public static void addMessageToQueue(
String columnFamily, String queue, long messageId, byte[] message, Keyspace keyspace)
throws CassandraDataAccessException {
if (keyspace == null) {
throw new CassandraDataAccessException("Can't add Data , no mutator provided ");
}
if (columnFamily == null || queue == null || message == null) {
throw new CassandraDataAccessException(
"Can't add data with columnFamily = "
+ columnFamily
+ " and queue="
+ queue
+ " message id = "
+ messageId
+ " message = "
+ message);
}
try {
Mutator<String> mutator = HFactory.createMutator(keyspace, stringSerializer);
mutator.addInsertion(
queue.trim(),
columnFamily,
HFactory.createColumn(messageId, message, longSerializer, bytesArraySerializer));
mutator.execute();
} catch (Exception e) {
throw new CassandraDataAccessException("Error while adding message to Queue", e);
}
}
/**
* Add Message to a Given Queue in Cassandra
*
* @param columnFamily ColumnFamily name
* @param queue queue name
* @param messageId Message id
* @param message message in bytes
* @param mutator Cassandra KeySpace
* @throws CassandraDataAccessException In case of database access error
*/
public static void addMessageToQueue(
String columnFamily,
String queue,
long messageId,
byte[] message,
Mutator<String> mutator,
boolean execute)
throws CassandraDataAccessException {
if (mutator == null) {
throw new CassandraDataAccessException("Can't add Data , no mutator provided ");
}
if (columnFamily == null || queue == null || message == null) {
throw new CassandraDataAccessException(
"Can't add data with columnFamily = "
+ columnFamily
+ " and queue="
+ queue
+ " message id = "
+ messageId
+ " message = "
+ message);
}
try {
mutator.addInsertion(
queue.trim(),
columnFamily,
HFactory.createColumn(messageId, message, longSerializer, bytesArraySerializer));
if (execute) {
mutator.execute();
}
} catch (Exception e) {
throw new CassandraDataAccessException("Error while adding message to Queue", e);
}
}
/**
* Add a new Column <int,byte[]> to a given row in a given column family
*
* @param columnFamily column Family name
* @param row row name
* @param key key of the column
* @param value value of the column
* @param keyspace cassandra KeySpace
* @throws CassandraDataAccessException
*/
public static void addIntegerByteArrayContentToRaw(
String columnFamily, String row, int key, byte[] value, Keyspace keyspace)
throws CassandraDataAccessException {
if (keyspace == null) {
throw new CassandraDataAccessException("Can't add Data , no keySpace provided ");
}
if (columnFamily == null || row == null || value == null) {
throw new CassandraDataAccessException(
"Can't add data with columnFamily = "
+ columnFamily
+ " and row="
+ row
+ " key = "
+ key
+ " value = "
+ value);
}
try {
Mutator<String> messageContentMutator = HFactory.createMutator(keyspace, stringSerializer);
messageContentMutator.addInsertion(
row,
columnFamily,
HFactory.createColumn(key, value, integerSerializer, bytesArraySerializer));
messageContentMutator.execute();
} catch (Exception e) {
throw new CassandraDataAccessException(
"Error while adding new Column <int,byte[]> to cassandra store", e);
}
}
public static void addIntegerByteArrayContentToRaw(
String columnFamily,
String row,
int key,
byte[] value,
Mutator<String> mutator,
boolean execute)
throws CassandraDataAccessException {
if (mutator == null) {
throw new CassandraDataAccessException("Can't add Data , no Mutator provided ");
}
if (columnFamily == null || row == null || value == null) {
throw new CassandraDataAccessException(
"Can't add data with columnFamily = "
+ columnFamily
+ " and row="
+ row
+ " key = "
+ key
+ " value = "
+ value);
}
mutator.addInsertion(
row,
columnFamily,
HFactory.createColumn(key, value, integerSerializer, bytesArraySerializer));
if (execute) {
mutator.execute();
}
}
/**
* Add new Column<long,long> to a given row in a given cassandra column family
*
* @param columnFamily column family name
* @param row row name
* @param key long key value of the column
* @param value long value of the column
* @param keyspace Cassandra KeySpace
* @throws CassandraDataAccessException
*/
public static void addLongContentToRow(
String columnFamily, String row, long key, long value, Keyspace keyspace)
throws CassandraDataAccessException {
if (keyspace == null) {
throw new CassandraDataAccessException("Can't add Data , no keySpace provided ");
}
if (columnFamily == null || row == null) {
throw new CassandraDataAccessException(
"Can't add data with columnFamily = "
+ columnFamily
+ " and rowName="
+ row
+ " key = "
+ key);
}
try {
Mutator<String> mutator = HFactory.createMutator(keyspace, stringSerializer);
mutator.insert(
row, columnFamily, HFactory.createColumn(key, value, longSerializer, longSerializer));
mutator.execute();
} catch (Exception e) {
throw new CassandraDataAccessException("Error while adding long content to a row", e);
}
}
/**
* Add a new Column <long,byte[]> to a given row in a given column family
*
* @param columnFamily column family name
* @param row row name
* @param key long key value
* @param value value as a byte array
* @param keyspace CassandraKeySpace
* @throws CassandraDataAccessException
*/
public static void addLongByteArrayColumnToRow(
String columnFamily, String row, long key, byte[] value, Keyspace keyspace)
throws CassandraDataAccessException {
if (keyspace == null) {
throw new CassandraDataAccessException("Can't add Data , no keySpace provided ");
}
if (columnFamily == null || row == null || value == null) {
throw new CassandraDataAccessException(
"Can't add data with columnFamily = "
+ columnFamily
+ " and row="
+ row
+ " key = "
+ key
+ " value = "
+ value);
}
try {
Mutator<String> messageContentMutator = HFactory.createMutator(keyspace, stringSerializer);
messageContentMutator.addInsertion(
row,
columnFamily,
HFactory.createColumn(key, value, longSerializer, bytesArraySerializer));
messageContentMutator.execute();
} catch (Exception e) {
throw new CassandraDataAccessException(
"Error while adding new Column <int,byte[]> to cassandra store", e);
}
}
/**
* Add a Mapping to a Given Row in cassandra column family. Mappings are used as search indexes
*
* @param columnFamily columnFamilyName
* @param row row name
* @param cKey key name for the adding column
* @param cValue value for the adding column
* @param keyspace Cassandra KeySpace
* @throws CassandraDataAccessException In case of database access error or data error
*/
public static void addMappingToRaw(
String columnFamily, String row, String cKey, String cValue, Keyspace keyspace)
throws CassandraDataAccessException {
if (keyspace == null) {
throw new CassandraDataAccessException("Can't add Data , no KeySpace provided ");
}
if (columnFamily == null || row == null || cKey == null) {
throw new CassandraDataAccessException(
"Can't add data with columnFamily = "
+ columnFamily
+ " and rowName="
+ row
+ " key = "
+ cKey);
}
try {
Mutator<String> mutator = HFactory.createMutator(keyspace, stringSerializer);
mutator.addInsertion(
row,
columnFamily,
HFactory.createColumn(cKey, cValue.trim(), stringSerializer, stringSerializer));
mutator.execute();
} catch (Exception e) {
throw new CassandraDataAccessException("Error while adding a Mapping to row ", e);
}
}
public static void addMappingToRow(
String columnFamily,
String row,
String cKey,
String cValue,
Mutator<String> mutator,
boolean execute)
throws CassandraDataAccessException {
if (mutator == null) {
throw new CassandraDataAccessException("Can't add Data , no mutator provided ");
}
mutator.addInsertion(
row,
columnFamily,
HFactory.createColumn(cKey, cValue.trim(), stringSerializer, stringSerializer));
if (execute) {
mutator.execute();
}
}
/**
* Add an Mapping Entry to a raw in a given column family
*
* @param columnFamily ColumnFamily name
* @param row row name
* @param cKey column key
* @param cValue column value
* @param mutator mutator
* @param execute should we execute the insertion. if false it will just and the insertion to the
* mutator
* @throws CassandraDataAccessException In case of database access error or data error
*/
public static void addMappingToRaw(
String columnFamily,
String row,
String cKey,
String cValue,
Mutator<String> mutator,
boolean execute)
throws CassandraDataAccessException {
if (mutator == null) {
throw new CassandraDataAccessException("Can't add Data , no mutator provided ");
}
if (columnFamily == null || row == null || cKey == null) {
throw new CassandraDataAccessException(
"Can't add data with columnFamily = "
+ columnFamily
+ " and rowName="
+ row
+ " key = "
+ cKey);
}
try {
mutator.addInsertion(
row,
columnFamily,
HFactory.createColumn(cKey, cValue.trim(), stringSerializer, stringSerializer));
if (execute) {
mutator.execute();
}
} catch (Exception e) {
throw new CassandraDataAccessException("Error while adding a Mapping to row ", e);
}
}
/**
* Delete a given string column in a raw in a column family
*
* @param columnFamily column family name
* @param row row name
* @param key key name
* @param keyspace cassandra keySpace
* @throws CassandraDataAccessException In case of database access error or data error
*/
public static void deleteStringColumnFromRaw(
String columnFamily, String row, String key, Keyspace keyspace)
throws CassandraDataAccessException {
if (keyspace == null) {
throw new CassandraDataAccessException("Can't delete Data , no keyspace provided ");
}
if (columnFamily == null || row == null || key == null) {
throw new CassandraDataAccessException(
"Can't delete data in columnFamily = "
+ columnFamily
+ " and rowName="
+ row
+ " key = "
+ key);
}
try {
Mutator<String> mutator = HFactory.createMutator(keyspace, stringSerializer);
mutator.addDeletion(row, columnFamily, key, stringSerializer);
mutator.execute();
} catch (Exception e) {
throw new CassandraDataAccessException(
"Error while deleting " + key + " from " + columnFamily);
}
}
/**
* Delete a given string column in a raw in a column family
*
* @param columnFamily column family name
* @param row row name
* @param key key name
* @param keyspace cassandra keySpace
* @throws CassandraDataAccessException In case of database access error or data error
*/
public static void deleteLongColumnFromRaw(
String columnFamily, String row, long key, Keyspace keyspace)
throws CassandraDataAccessException {
if (keyspace == null) {
throw new CassandraDataAccessException("Can't delete Data , no keyspace provided ");
}
if (columnFamily == null || row == null) {
throw new CassandraDataAccessException(
"Can't delete data in columnFamily = "
+ columnFamily
+ " and rowName="
+ row
+ " key = "
+ key);
}
try {
Mutator<String> mutator = HFactory.createMutator(keyspace, stringSerializer);
mutator.addDeletion(row, columnFamily, key, longSerializer);
mutator.execute();
} catch (Exception e) {
throw new CassandraDataAccessException(
"Error while deleting " + key + " from " + columnFamily);
}
}
public static void deleteLongColumnFromRaw(
String columnFamily, String row, long key, Mutator<String> mutator, boolean execute)
throws CassandraDataAccessException {
if (mutator == null) {
throw new CassandraDataAccessException("Can't delete Data , no mutator provided ");
}
if (columnFamily == null || row == null) {
throw new CassandraDataAccessException(
"Can't delete data in columnFamily = "
+ columnFamily
+ " and rowName="
+ row
+ " key = "
+ key);
}
try {
mutator.addDeletion(row, columnFamily, key, longSerializer);
if (execute) {
mutator.execute();
}
} catch (Exception e) {
throw new CassandraDataAccessException(
"Error while deleting " + key + " from " + columnFamily);
}
}
/**
* Delete a given string column in a raw in a column family
*
* @param columnFamily ColumnFamily Name
* @param row row name
* @param key string key to of the column
* @param mutator Mutator reference
* @param execute execute the deletion ?
* @throws CassandraDataAccessException
*/
public static void deleteStringColumnFromRaw(
String columnFamily, String row, String key, Mutator<String> mutator, boolean execute)
throws CassandraDataAccessException {
if (mutator == null) {
throw new CassandraDataAccessException("Can't delete Data , no mutator provided ");
}
if (columnFamily == null || row == null || key == null) {
throw new CassandraDataAccessException(
"Can't delete data in columnFamily = "
+ columnFamily
+ " and rowName="
+ row
+ " key = "
+ key);
}
try {
mutator.addDeletion(row, columnFamily, key, stringSerializer);
if (execute) {
mutator.execute();
}
} catch (Exception e) {
throw new CassandraDataAccessException(
"Error while deleting " + key + " from " + columnFamily);
}
}
public static void deleteIntegerColumnFromRow(
String columnFamily, String row, int key, Mutator<String> mutator, boolean execute)
throws CassandraDataAccessException {
if (mutator == null) {
throw new CassandraDataAccessException("Can't delete Data , no mutator provided ");
}
if (columnFamily == null || row == null) {
throw new CassandraDataAccessException(
"Can't delete data in columnFamily = "
+ columnFamily
+ " and rowName="
+ row
+ " key = "
+ key);
}
try {
mutator.addDeletion(row, columnFamily, key, integerSerializer);
if (execute) {
mutator.execute();
}
} catch (Exception e) {
throw new CassandraDataAccessException(
"Error while deleting " + key + " from " + columnFamily);
}
}
public static void deleteIntegerColumnFromRow(
String columnFamily, String row, Integer key, Keyspace keyspace)
throws CassandraDataAccessException {
if (keyspace == null) {
throw new CassandraDataAccessException("Can't delete Data , no keyspace provided ");
}
if (columnFamily == null || row == null) {
throw new CassandraDataAccessException(
"Can't delete data in columnFamily = "
+ columnFamily
+ " and rowName="
+ row
+ " key = "
+ key);
}
try {
Mutator<String> mutator = HFactory.createMutator(keyspace, stringSerializer);
mutator.addDeletion(row, columnFamily, key, integerSerializer);
mutator.execute();
} catch (Exception e) {
throw new CassandraDataAccessException("Error while deleting data", e);
}
}
public static void deleteIntegerColumnsFromRow(
String columnFamily, List<String> rows, Keyspace keyspace)
throws CassandraDataAccessException {
if (keyspace == null) {
throw new CassandraDataAccessException("Can't delete Data , no keyspace provided ");
}
if (columnFamily == null || rows == null) {
throw new CassandraDataAccessException(
"Can't delete data in columnFamily = " + columnFamily + " and rowName=" + rows);
}
try {
Mutator<String> mutator = HFactory.createMutator(keyspace, stringSerializer);
for (String row : rows) {
mutator.addDeletion(row, columnFamily, null, integerSerializer);
}
mutator.execute();
} catch (Exception e) {
throw new CassandraDataAccessException("Error while deleting data", e);
}
}
}