/**
* 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);
}
}
/**
* 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);
}
}