Examples with StreamingPropertyValueTableDataRef org.vertexium.accumulo.StreamingPropertyValueTableDataRef used on opensource projects

Example 1 with StreamingPropertyValueTableDataRef

use of org.vertexium.accumulo.StreamingPropertyValueTableDataRef in project vertexium by visallo.

the class DataInDataTableStreamingPropertyValueStorageStrategy method saveStreamingPropertyValue.

@Override
public StreamingPropertyValueRef saveStreamingPropertyValue(ElementMutationBuilder elementMutationBuilder, String rowKey, Property property, StreamingPropertyValue streamingPropertyValue) {
    try {
        String dataTableRowKey = new DataTableRowKey(rowKey, property).getRowKey();
        InputStream in = streamingPropertyValue.getInputStream();
        byte[] buffer = new byte[dataInDataTablePartSize];
        long offset = 0;
        while (true) {
            int read = in.read(buffer);
            if (read <= 0) {
                break;
            }
            Mutation dataMutation = new Mutation(dataTableRowKey);
            Text columnQualifier = new Text(String.format("%08x", offset));
            dataMutation.put(DATA_COLUMN_FAMILY, columnQualifier, property.getTimestamp(), new Value(buffer, 0, read));
            elementMutationBuilder.saveDataMutation(dataMutation);
            offset += read;
        }
        Mutation dataMutation = new Mutation(dataTableRowKey);
        dataMutation.put(METADATA_COLUMN_FAMILY, METADATA_LENGTH_COLUMN_QUALIFIER, property.getTimestamp(), new Value(Longs.toByteArray(offset)));
        elementMutationBuilder.saveDataMutation(dataMutation);
        return new StreamingPropertyValueTableDataRef(dataTableRowKey, streamingPropertyValue, offset);
    } catch (Exception ex) {
        throw new VertexiumException("Could not store streaming property value", ex);
    }
}