1 /*
2 Copyright (c) 2014 James Ahlborn
3
4 Licensed under the Apache License, Version 2.0 (the "License");
5 you may not use this file except in compliance with the License.
6 You may obtain a copy of the License at
7
8 http://www.apache.org/licenses/LICENSE-2.0
9
10 Unless required by applicable law or agreed to in writing, software
11 distributed under the License is distributed on an "AS IS" BASIS,
12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 See the License for the specific language governing permissions and
14 limitations under the License.
15 */
16
17 package com.healthmarketscience.jackcess.impl;
18
19 import java.io.IOException;
20
21 /**
22 * ColumnImpl subclass which is used for Text data types.
23 *
24 * @author James Ahlborn
25 * @usage _advanced_class_
26 */
27 class TextColumnImpl extends ColumnImpl
28 {
29 /** whether or not they are compressed */
30 private final boolean _compressedUnicode;
31 /** the collating sort order for a text field */
32 private final SortOrder _sortOrder;
33 /** the code page for a text field (for certain db versions) */
34 private final short _codePage;
35
36 TextColumnImpl(InitArgs args) throws IOException
37 {
38 super(args);
39
40 // co-located w/ precision/scale
41 _sortOrder = readSortOrder(
42 args.buffer, args.offset + getFormat().OFFSET_COLUMN_SORT_ORDER,
43 getFormat());
44 _codePage = readCodePage(args.buffer, args.offset, getFormat());
45
46 _compressedUnicode =
47 ((args.extFlags & COMPRESSED_UNICODE_EXT_FLAG_MASK) != 0);
48 }
49
50 @Override
51 public boolean isCompressedUnicode() {
52 return _compressedUnicode;
53 }
54
55 @Override
56 public short getTextCodePage() {
57 return _codePage;
58 }
59
60 @Override
61 public SortOrder getTextSortOrder() {
62 return _sortOrder;
63 }
64 }