| /* |
| * Copyright 2009-2010 by The Regents of the University of California |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * you may obtain a copy of the License from |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package edu.uci.ics.hyracks.data.std.collections.api; |
| |
| /** |
| * Represents an immutable vector of ValueReferences. Users of this interface make the assumption |
| * that it provides random access to the items in it. In other words, each of the getXXX(index) calls |
| * have O(1) complexity. |
| * |
| * @author vinayakb |
| */ |
| public interface IValueReferenceVector { |
| /** |
| * Number of items in this vector. |
| * |
| * @return - the number of items in this vector. |
| */ |
| public int getSize(); |
| |
| /** |
| * Get the byte array that contains the item referenced by <code>index</code> |
| * |
| * @param index |
| * - Index of the item in the vector |
| * @return Byte Array that contains the item. |
| */ |
| public byte[] getBytes(int index); |
| |
| /** |
| * Get the start offset of the item referenced by <code>index</code> |
| * |
| * @param index |
| * - Index of the item in the vector |
| * @return Start Offset in the Byte Array of the item |
| */ |
| public int getStart(int index); |
| |
| /** |
| * Get the length of the item referenced by <code>index</code> |
| * |
| * @param index |
| * - Index of the item in the vector |
| * @return Length in the Byte Array of the item |
| */ |
| public int getLength(int index); |
| } |