Examples with IACursor org.apache.asterix.om.base.IACursor used on opensource projects

Example 11 with IACursor

use of org.apache.asterix.om.base.IACursor in project asterixdb by apache.

the class NodeGroupTupleTranslator method getMetadataEntityFromTuple.

@Override
public NodeGroup getMetadataEntityFromTuple(ITupleReference frameTuple) throws HyracksDataException {
    byte[] serRecord = frameTuple.getFieldData(NODEGROUP_PAYLOAD_TUPLE_FIELD_INDEX);
    int recordStartOffset = frameTuple.getFieldStart(NODEGROUP_PAYLOAD_TUPLE_FIELD_INDEX);
    int recordLength = frameTuple.getFieldLength(NODEGROUP_PAYLOAD_TUPLE_FIELD_INDEX);
    ByteArrayInputStream stream = new ByteArrayInputStream(serRecord, recordStartOffset, recordLength);
    DataInput in = new DataInputStream(stream);
    ARecord nodeGroupRecord = recordSerDes.deserialize(in);
    String gpName = ((AString) nodeGroupRecord.getValueByPos(MetadataRecordTypes.NODEGROUP_ARECORD_GROUPNAME_FIELD_INDEX)).getStringValue();
    IACursor cursor = ((AUnorderedList) nodeGroupRecord.getValueByPos(MetadataRecordTypes.NODEGROUP_ARECORD_NODENAMES_FIELD_INDEX)).getCursor();
    List<String> nodeNames = new ArrayList<>();
    while (cursor.next()) {
        nodeNames.add(((AString) cursor.get()).getStringValue());
    }
    return new NodeGroup(gpName, nodeNames);
}

Example 12 with IACursor

use of org.apache.asterix.om.base.IACursor in project asterixdb by apache.

the class DatasetTupleTranslator method getDatasetHints.

protected Map<String, String> getDatasetHints(ARecord datasetRecord) {
    Map<String, String> hints = new HashMap<>();
    String key;
    String value;
    AUnorderedList list = (AUnorderedList) datasetRecord.getValueByPos(MetadataRecordTypes.DATASET_ARECORD_HINTS_FIELD_INDEX);
    IACursor cursor = list.getCursor();
    while (cursor.next()) {
        ARecord field = (ARecord) cursor.get();
        key = ((AString) field.getValueByPos(MetadataRecordTypes.PROPERTIES_NAME_FIELD_INDEX)).getStringValue();
        value = ((AString) field.getValueByPos(MetadataRecordTypes.PROPERTIES_VALUE_FIELD_INDEX)).getStringValue();
        hints.put(key, value);
    }
    return hints;
}