Java Code Examples for me.prettyprint.hector.api.beans.ColumnSlice#getColumns()

The following examples show how to use me.prettyprint.hector.api.beans.ColumnSlice#getColumns() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: OpsCiStateDao.java    From oneops with Apache License 2.0 6 votes vote down vote up 
public List<CiChangeStateEvent> getCiStateHistory(long ciId, Long startTime, Long endTime, Integer count) {

        if (count == null) count = 1000;
        List<CiChangeStateEvent> states = new ArrayList<CiChangeStateEvent>();
        SliceQuery<Long, Long, String> sliceQuery = HFactory.createSliceQuery(keyspace, longSerializer, longSerializer, stringSerializer);
        sliceQuery.setColumnFamily(SchemaBuilder.CI_STATE_HIST_CF);
        sliceQuery.setRange(startTime, endTime, false, count);
        sliceQuery.setKey(ciId);
        QueryResult<ColumnSlice<Long, String>> result = sliceQuery.execute();
        ColumnSlice<Long, String> resultCols = result.get();
        for (HColumn<Long, String> col : resultCols.getColumns()) {
            CiChangeStateEvent event = gson.fromJson(col.getValue(), CiChangeStateEvent.class);
            states.add(event);
        }
        return states;
    }
Example 2
Source File: CassandraDB.java    From cassandra-river with Apache License 2.0 5 votes vote down vote up 
public CassandraCFData getCFData(String columnFamily, String start, int limit) {
	int columnLimit = 100;
	CassandraCFData data = new CassandraCFData();
	String lastEnd = null;
	
	Map<String, Map<String, String>> cfData = new HashMap<String, Map<String, String>>();
	RangeSlicesQuery<String, String, String> query = HFactory.createRangeSlicesQuery(keyspace, STR, STR, STR);
	query.setColumnFamily(columnFamily);
	query.setKeys(start, "");
	query.setRange("", "", false, columnLimit);
	query.setRowCount(limit);
	OrderedRows<String, String, String> rows = query.execute().get();
	if (rows.getCount() != 1) {
		lastEnd = rows.peekLast().getKey();
		data.start = lastEnd;
	} else {
		data.start = null;
		return data;
	}
	
	for(Row<String,String,String> row  : rows.getList()){
		Map<String, String> columnMap = new HashMap<String, String>();
		ColumnSlice<String, String> columnData = row.getColumnSlice();
		for (HColumn<String, String> column : columnData.getColumns()){
			columnMap.put(column.getName(), column.getValue());
		}
		
		cfData.put(row.getKey(), columnMap);
	}
	
	data.rowColumnMap = cfData;
	return data;
}
Example 3
Source File: QueueManagerImpl.java    From usergrid with Apache License 2.0 5 votes vote down vote up 
@Override
public Message getMessage( UUID messageId ) {
    SliceQuery<UUID, String, ByteBuffer> q =
            createSliceQuery( cass.getApplicationKeyspace( applicationId ), ue, se, be );
    q.setColumnFamily( MESSAGE_PROPERTIES.getColumnFamily() );
    q.setKey( messageId );
    q.setRange( null, null, false, ALL_COUNT );
    QueryResult<ColumnSlice<String, ByteBuffer>> r = q.execute();
    ColumnSlice<String, ByteBuffer> slice = r.get();
    List<HColumn<String, ByteBuffer>> results = slice.getColumns();
    return deserializeMessage( results );
}
Example 4
Source File: QueueManagerImpl.java    From usergrid with Apache License 2.0 5 votes vote down vote up 
public Queue getQueue( String queuePath, UUID queueId ) {
    SliceQuery<UUID, String, ByteBuffer> q =
            createSliceQuery( cass.getApplicationKeyspace( applicationId ), ue, se, be );
    q.setColumnFamily( QUEUE_PROPERTIES.getColumnFamily() );
    q.setKey( queueId );
    q.setRange( null, null, false, ALL_COUNT );
    QueryResult<ColumnSlice<String, ByteBuffer>> r = q.execute();
    ColumnSlice<String, ByteBuffer> slice = r.get();
    List<HColumn<String, ByteBuffer>> results = slice.getColumns();
    return deserializeQueue( results );
}
Example 5
Source File: CassandraService.java    From usergrid with Apache License 2.0 5 votes vote down vote up 
/**
 * Gets the columns.
 *
 * @param ko the keyspace
 * @param columnFamily the column family
 * @param key the key
 *
 * @return columns
 *
 * @throws Exception the exception
 */
public <N, V> List<HColumn<N, V>> getAllColumns( Keyspace ko, Object columnFamily, Object key,
                                                 Serializer<N> nameSerializer, Serializer<V> valueSerializer )
        throws Exception {

    if ( db_logger.isTraceEnabled() ) {
        db_logger.trace( "getColumns cf={} key={}", columnFamily, key );
    }

    SliceQuery<ByteBuffer, N, V> q = createSliceQuery( ko, be, nameSerializer, valueSerializer );
    q.setColumnFamily( columnFamily.toString() );
    q.setKey( bytebuffer( key ) );
    q.setRange( null, null, false, ALL_COUNT );
    QueryResult<ColumnSlice<N, V>> r = q.execute();
    ColumnSlice<N, V> slice = r.get();
    List<HColumn<N, V>> results = slice.getColumns();

    if ( db_logger.isTraceEnabled() ) {
        if ( results == null ) {
            db_logger.trace( "getColumns returned null" );
        }
        else {
            db_logger.trace( "getColumns returned {} columns", results.size() );
        }
    }

    return results;
}
Example 6
Source File: CassandraService.java    From usergrid with Apache License 2.0 5 votes vote down vote up 
/**
 * Gets the columns.
 *
 * @param ko the keyspace
 * @param columnFamily the column family
 * @param key the key
 * @param columnNames the column names
 *
 * @return columns
 *
 * @throws Exception the exception
 */
@SuppressWarnings("unchecked")
public <N, V> List<HColumn<N, V>> getColumns( Keyspace ko, Object columnFamily, Object key, Set<String> columnNames,
                                              Serializer<N> nameSerializer, Serializer<V> valueSerializer )
        throws Exception {

    if ( db_logger.isTraceEnabled() ) {
        db_logger.trace( "getColumns cf={} key={} names={}", columnFamily, key, columnNames );
    }

    SliceQuery<ByteBuffer, N, V> q = createSliceQuery( ko, be, nameSerializer, valueSerializer );
    q.setColumnFamily( columnFamily.toString() );
    q.setKey( bytebuffer( key ) );
    // q.setColumnNames(columnNames.toArray(new String[0]));
    q.setColumnNames( ( N[] ) nameSerializer.fromBytesSet( se.toBytesSet( new ArrayList<String>( columnNames ) ) )
                                            .toArray() );

    QueryResult<ColumnSlice<N, V>> r = q.execute();
    ColumnSlice<N, V> slice = r.get();
    List<HColumn<N, V>> results = slice.getColumns();

    if ( db_logger.isTraceEnabled() ) {
        if ( results == null ) {
            db_logger.trace( "getColumns returned null" );
        }
        else {
            db_logger.trace( "getColumns returned {} columns", results.size());
        }
    }

    return results;
}
Example 7
Source File: CassandraService.java    From usergrid with Apache License 2.0 4 votes vote down vote up 
/**
 * Gets the columns.
 *
 * @param ko the keyspace
 * @param columnFamily the column family
 * @param key the key
 * @param start the start
 * @param finish the finish
 * @param count the count
 * @param reversed the reversed
 *
 * @return columns
 *
 * @throws Exception the exception
 */
public List<HColumn<ByteBuffer, ByteBuffer>> getColumns( Keyspace ko, Object columnFamily, Object key, Object start,
                                                         Object finish, int count, boolean reversed )
        throws Exception {

    if ( db_logger.isTraceEnabled() ) {
        db_logger.debug( "getColumns cf=" + columnFamily + " key=" + key + " start=" + start + " finish=" + finish
                + " count=" + count + " reversed=" + reversed );
    }

    SliceQuery<ByteBuffer, ByteBuffer, ByteBuffer> q = createSliceQuery( ko, be, be, be );
    q.setColumnFamily( columnFamily.toString() );
    q.setKey( bytebuffer( key ) );

    ByteBuffer start_bytes = null;
    if ( start instanceof DynamicComposite ) {
        start_bytes = ( ( DynamicComposite ) start ).serialize();
    }
    else if ( start instanceof List ) {
        start_bytes = DynamicComposite.toByteBuffer( ( List<?> ) start );
    }
    else {
        start_bytes = bytebuffer( start );
    }

    ByteBuffer finish_bytes = null;
    if ( finish instanceof DynamicComposite ) {
        finish_bytes = ( ( DynamicComposite ) finish ).serialize();
    }
    else if ( finish instanceof List ) {
        finish_bytes = DynamicComposite.toByteBuffer( ( List<?> ) finish );
    }
    else {
        finish_bytes = bytebuffer( finish );
    }

/*
 * if (reversed) { q.setRange(finish_bytes, start_bytes, reversed, count); }
 * else { q.setRange(start_bytes, finish_bytes, reversed, count); }
 */
    q.setRange( start_bytes, finish_bytes, reversed, count );
    QueryResult<ColumnSlice<ByteBuffer, ByteBuffer>> r = q.execute();
    ColumnSlice<ByteBuffer, ByteBuffer> slice = r.get();
    List<HColumn<ByteBuffer, ByteBuffer>> results = slice.getColumns();

    if ( db_logger.isTraceEnabled() ) {
        if ( results == null ) {
            db_logger.trace("getColumns returned null");
        }
        else {
            db_logger.trace("getColumns returned {} columns", results.size());
        }
    }

    return results;
}