1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you 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 at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_CONNECTIVITY_SOURCE_INC_DBASE_DTABLE_HXX
#define INCLUDED_CONNECTIVITY_SOURCE_INC_DBASE_DTABLE_HXX
#include <file/FTable.hxx>
#include <connectivity/CommonTools.hxx>
#include <tools/urlobj.hxx>
namespace connectivity
{
namespace dbase
{
typedef file::OFileTable ODbaseTable_BASE;
class ODbaseConnection;
class ODbaseTable : public ODbaseTable_BASE
{
// The first byte of a dBase file specifies its type
public:
enum DBFType { dBaseIII = 0x03,
dBaseIV = 0x04,
dBaseV = 0x05,
VisualFoxPro = 0x30,
VisualFoxProAuto = 0x31, // Visual FoxPro with AutoIncrement field
dBaseFS = 0x43,
dBaseFSMemo = 0xB3,
dBaseIIIMemo = 0x83,
dBaseIVMemo = 0x8B,
dBaseIVMemoSQL = 0x8E,
FoxProMemo = 0xF5
};
enum DBFMemoType { MemodBaseIII = 0,
MemodBaseIV,
MemoFoxPro
};
private:
// sources: https://www.clicketyclick.dk/databases/xbase/format/dbf.html (dBASE III and 5)
// http://www.dbase.com/KnowledgeBase/int/db7_file_fmt.htm (dBASE 7) which is similar at least for this part
struct DBFHeader { // address/pos in trailer
DBFType type; // dBASE/xBASE type, see DBFType 00h
sal_uInt8 dateElems[3]; // Date of last change (YYMMDD) 01h
sal_uInt32 nbRecords; // Number of records 04h
sal_uInt16 headerLength; // 08h
sal_uInt16 recordLength; // Length of 1 record 10h
sal_uInt8 trailer[20];
// this last field contains these data:
// - reserved:2 bytes:should be filled with 0 12h/0
// - incomplete transaction:1 byte:dBASE IV 14h/2
// 00h Transaction ended (or rolled back)
// 01h Transaction started
// - encryptionFlag:1 byte: dBASE IV 15h/3
// 00h not encrypted
// 01h for encrypted
// - freeRecordThread:4 bytes:reserved for LAN only 16h/4
// - multiUserdBASE:8 bytes:reserved for multi-user dBASE (dBASE III+) 20h/8
// - MDXFlag:1 byte:dBASE IV 28h/16
// 0x01 if a production .MDX file exists for this table
// 0x00 if no .MDX file exists
// - languageDriver:1 byte:codepage (from Foxpro) 29h/17
// - reserved:2 bytes: should be filled with 0 30h/18
};
struct DBFColumn { /* Column descriptors */
sal_uInt8 db_fnm[11]; /* Field name */
sal_uInt8 db_typ; /* Field type */
sal_uInt32 db_adr; /* Field address */
sal_uInt8 db_flng; /* Field length */
sal_uInt8 db_dez; /* Decimal places for N */
sal_uInt8 db_free2[14]; /* Reserved */
};
struct DBFMemoHeader
{
DBFMemoType db_typ; /* File type */
sal_uInt32 db_next; /* Next free block */
sal_uInt16 db_size; /* Block size: dBase 3 fixed */
DBFMemoHeader()
: db_typ(MemodBaseIII)
, db_next(0)
, db_size(0)
{
}
};
std::vector<sal_Int32> m_aTypes; // holds all types for columns just to avoid to ask the propertyset
std::vector<sal_Int32> m_aPrecisions; // same as above
std::vector<sal_Int32> m_aScales;
std::vector<sal_Int32> m_aRealFieldLengths;
DBFHeader m_aHeader = {};
DBFMemoHeader m_aMemoHeader;
std::unique_ptr<SvStream> m_pMemoStream;
rtl_TextEncoding m_eEncoding;
void alterColumn(sal_Int32 index,
const css::uno::Reference< css::beans::XPropertySet>& descriptor ,
const css::uno::Reference< css::sdbcx::XDataDescriptorFactory>& xOldColumn );
void readHeader();
void fillColumns();
OUString createTempFile();
void copyData(ODbaseTable* _pNewTable,sal_Int32 _nPos);
bool CreateFile(const INetURLObject& aFile, bool& bCreateMemo);
bool CreateMemoFile(const INetURLObject& aFile);
bool HasMemoFields() const { return m_aHeader.type > dBaseIV;}
void ReadMemoHeader();
bool ReadMemo(std::size_t nBlockNo, ORowSetValue& aVariable);
void WriteMemo(const ORowSetValue& aVariable, std::size_t& rBlockNr);
bool WriteBuffer();
bool UpdateBuffer(OValueRefVector& rRow, const OValueRefRow& pOrgRow, const css::uno::Reference< css::container::XIndexAccess>& _xCols, bool bForceAllFields);
css::uno::Reference< css::beans::XPropertySet> isUniqueByColumnName(sal_Int32 _nColumnPos);
bool AllocBuffer();
void throwInvalidDbaseFormat();
/// @throws css::sdbc::SQLException
/// @throws css::container::ElementExistException
/// @throws css::uno::RuntimeException
void renameImpl( const OUString& newName );
void throwInvalidColumnType(const char* pErrorId, const OUString& _sColumnName);
protected:
virtual void FileClose() override;
// using ::connectivity::sdbcx::OTableDescriptor_BASE::rBHelper;
public:
virtual void refreshColumns() override;
virtual void refreshIndexes() override;
public:
ODbaseTable( sdbcx::OCollection* _pTables,ODbaseConnection* _pConnection);
ODbaseTable( sdbcx::OCollection* _pTables,ODbaseConnection* _pConnection,
const OUString& Name,
const OUString& Type,
const OUString& Description = OUString(),
const OUString& SchemaName = OUString(),
const OUString& CatalogName = OUString()
);
void construct() override; // can throw any exception
virtual sal_Int32 getCurrentLastPos() const override;
virtual bool seekRow(IResultSetHelper::Movement eCursorPosition, sal_Int32 nOffset, sal_Int32& nCurPos) override;
virtual bool fetchRow(OValueRefRow& _rRow,const OSQLColumns& _rCols, bool bRetrieveData) override;
virtual css::uno::Any SAL_CALL queryInterface( const css::uno::Type & rType ) override;
//XTypeProvider
virtual css::uno::Sequence< css::uno::Type > SAL_CALL getTypes( ) override;
virtual void SAL_CALL disposing() override;
// css::lang::XUnoTunnel
virtual sal_Int64 SAL_CALL getSomething( const css::uno::Sequence< sal_Int8 >& aIdentifier ) override;
static css::uno::Sequence< sal_Int8 > getUnoTunnelId();
// XAlterTable
virtual void SAL_CALL alterColumnByName( const OUString& colName, const css::uno::Reference< css::beans::XPropertySet >& descriptor ) override;
virtual void SAL_CALL alterColumnByIndex( sal_Int32 index, const css::uno::Reference< css::beans::XPropertySet >& descriptor ) override;
// XRename
virtual void SAL_CALL rename( const OUString& newName ) override;
bool DropImpl();
bool CreateImpl();
virtual bool InsertRow(OValueRefVector& rRow, const css::uno::Reference< css::container::XIndexAccess>& _xCols) override;
virtual bool DeleteRow(const OSQLColumns& _rCols) override;
virtual bool UpdateRow(OValueRefVector& rRow, OValueRefRow& pOrgRow,const css::uno::Reference< css::container::XIndexAccess>& _xCols) override;
virtual void addColumn(const css::uno::Reference< css::beans::XPropertySet>& descriptor) override;
virtual void dropColumn(sal_Int32 _nPos) override;
static OUString getEntry(file::OConnection const * _pConnection,const OUString& _sURL );
static bool Drop_Static(const OUString& _sUrl, bool _bHasMemoFields, sdbcx::OCollection* _pIndexes );
virtual void refreshHeader() override;
virtual css::uno::Reference< css::sdbc::XDatabaseMetaData> getMetaData() const override;
};
}
}
#endif // INCLUDED_CONNECTIVITY_SOURCE_INC_DBASE_DTABLE_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|