01: /* ====================================================================
02: Licensed to the Apache Software Foundation (ASF) under one or more
03: contributor license agreements. See the NOTICE file distributed with
04: this work for additional information regarding copyright ownership.
05: The ASF licenses this file to You under the Apache License, Version 2.0
06: (the "License"); you may not use this file except in compliance with
07: the License. You may obtain a copy of the License at
08:
09: http://www.apache.org/licenses/LICENSE-2.0
10:
11: Unless required by applicable law or agreed to in writing, software
12: distributed under the License is distributed on an "AS IS" BASIS,
13: WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: See the License for the specific language governing permissions and
15: limitations under the License.
16: ==================================================================== */
17:
18: package org.apache.poi.poifs.storage;
19:
20: import java.io.IOException;
21:
22: /**
23: * An interface for blocks managed by a list that works with a
24: * BlockAllocationTable to keep block sequences straight
25: *
26: * @author Marc Johnson (mjohnson at apache dot org
27: */
28:
29: public interface ListManagedBlock {
30:
31: /**
32: * Get the data from the block
33: *
34: * @return the block's data as a byte array
35: *
36: * @exception IOException if there is no data
37: */
38:
39: public byte[] getData() throws IOException;
40: } // end public interface ListManagedBlock
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