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/*************** Tabxml H Declares Source Code File (.H) ***************/
/* Name: TABXML.H Version 1.7 */
/* */
/* (C) Copyright to the author Olivier BERTRAND 2007-2016 */
/* */
/* This file contains the XML table classes declares. */
/***********************************************************************/
typedef class XMLDEF *PXMLDEF;
typedef class TDBXML *PTDBXML;
typedef class XMLCOL *PXMLCOL;
DllExport PQRYRES XMLColumns(PGLOBAL, char *, char *, PTOS, bool);
/* --------------------------- XML classes --------------------------- */
/***********************************************************************/
/* XML table. */
/***********************************************************************/
class DllExport XMLDEF : public TABDEF { /* Logical table description */
friend class TDBXML;
friend class TDBXCT;
friend PQRYRES XMLColumns(PGLOBAL, char*, char*, PTOS, bool);
public:
// Constructor
XMLDEF(void);
// Implementation
const char *GetType(void) override {return "XML";}
// Methods
bool DefineAM(PGLOBAL g, LPCSTR am, int poff) override;
PTDB GetTable(PGLOBAL g, MODE m) override;
protected:
// Members
PCSZ Fn; /* Path/Name of corresponding file */
char *Encoding; /* New XML table file encoding */
char *Tabname; /* Name of Table node */
char *Rowname; /* Name of first level nodes */
char *Colname; /* Name of second level nodes */
char *Mulnode; /* Name of multiple node */
char *XmlDB; /* Name of XML DB node */
char *Nslist; /* List of namespaces to register */
char *DefNs; /* Dummy name of default namespace */
char *Attrib; /* Table node attributes */
char *Hdattr; /* Header node attributes */
PCSZ Entry; /* Zip entry name or pattern */
int Coltype; /* Default column type */
int Limit; /* Limit of multiple values */
int Header; /* n first rows are header rows */
bool Xpand; /* Put multiple tags in several rows */
bool Usedom; /* True: DOM, False: libxml2 */
bool Zipped; /* True: Zipped XML file(s) */
bool Mulentries; /* True: multiple entries in zip file*/
bool Skip; /* Skip null columns */
}; // end of XMLDEF
#if defined(INCLUDE_TDBXML)
#include "m_ctype.h"
/***********************************************************************/
/* This is the class declaration for the simple XML tables. */
/***********************************************************************/
class DllExport TDBXML : public TDBASE {
friend class XMLCOL;
friend class XMULCOL;
friend class XPOSCOL;
friend PQRYRES XMLColumns(PGLOBAL, char*, char*, PTOS, bool);
public:
// Constructor
TDBXML(PXMLDEF tdp);
TDBXML(PTDBXML tdbp);
// Implementation
AMT GetAmType(void) override {return TYPE_AM_XML;}
PTDB Duplicate(PGLOBAL g) override {return (PTDB)new(g) TDBXML(this);}
// Methods
PTDB Clone(PTABS t) override;
int GetRecpos(void) override;
int GetProgCur(void) override {return N;}
PCSZ GetFile(PGLOBAL g) override {return Xfile;}
void SetFile(PGLOBAL g, PCSZ fn) override {Xfile = fn;}
void ResetDB(void) override {N = 0;}
void ResetSize(void) override {MaxSize = -1;}
int RowNumber(PGLOBAL g, bool b = false) override;
int LoadTableFile(PGLOBAL g, char *filename);
bool Initialize(PGLOBAL g);
bool SetTabNode(PGLOBAL g);
void SetNodeAttr(PGLOBAL g, char *attr, PXNODE node);
bool CheckRow(PGLOBAL g, bool b);
// Database routines
PCOL MakeCol(PGLOBAL g, PCOLDEF cdp, PCOL cprec, int n) override;
PCOL InsertSpecialColumn(PCOL colp) override;
//virtual int GetMaxSame(PGLOBAL g) {return (Xpand) ? Limit : 1;}
int Cardinality(PGLOBAL g) override;
int GetMaxSize(PGLOBAL g) override;
//virtual bool NeedIndexing(PGLOBAL g);
bool OpenDB(PGLOBAL g) override;
int ReadDB(PGLOBAL g) override;
int WriteDB(PGLOBAL g) override;
int DeleteDB(PGLOBAL g, int irc) override;
void CloseDB(PGLOBAL g) override;
int CheckWrite(PGLOBAL g) override {Checked = true; return 0;}
const CHARSET_INFO *data_charset() override;
protected:
// Members
PXDOC Docp;
PXNODE Root;
PXNODE Curp;
PXNODE DBnode;
PXNODE TabNode;
PXNODE RowNode;
PXNODE ColNode;
PXLIST Nlist;
PXLIST Clist;
PFBLOCK To_Xb; // Pointer to XML file block
PCOL Colp; // The multiple column
bool Changed; // After Update, Insert or Delete
bool Checked; // After Update check pass
bool NextSame; // Same next row
bool Xpand; // Put multiple tags in several rows
bool NewRow; // True when inserting a new row
bool Hasnod; // True if rows have subnodes
bool Write; // True for Insert and Update
bool Usedom; // True for DOM, False for libxml2
bool Bufdone; // True when column buffers allocated
bool Nodedone; // True when column nodes allocated
bool Void; // True if the file does not exist
bool Zipped; // True if Zipped XML file(s)
bool Mulentries; // True if multiple entries in zip file
PCSZ Xfile; // The XML file
char *Enc; // New XML table file encoding
char *Tabname; // Name of Table node
char *Rowname; // Name of first level nodes
char *Colname; // Name of second level nodes
char *Mulnode; // Name of multiple node
char *XmlDB; // Name of XML DB node
char *Nslist; // List of namespaces to register
char *DefNs; // Dummy name of default namespace
char *Attrib; // Table node attribut(s)
char *Hdattr; // Header node attribut(s)
PCSZ Entry; // Zip entry name or pattern
int Coltype; // Default column type
int Limit; // Limit of multiple values
int Header; // n first rows are header rows
int Multiple; // If multiple files
int Nrow; // The table cardinality
int Irow; // The current row index
int Nsub; // The current subrow index
int N; // The current Rowid
}; // end of class TDBXML
/***********************************************************************/
/* Class XMLCOL: XDB table access method column descriptor. */
/***********************************************************************/
class XMLCOL : public COLBLK {
friend class TDBXML;
public:
// Constructors
XMLCOL(PCOLDEF cdp, PTDB tdbp, PCOL cprec, int i, PCSZ am = "XML");
XMLCOL(XMLCOL *colp, PTDB tdbp); // Constructor used in copy process
// Implementation
int GetAmType(void) override {return TYPE_AM_XML;}
void SetTo_Val(PVAL valp) override {To_Val = valp;}
bool ParseXpath(PGLOBAL g, bool mode);
// Methods
bool SetBuffer(PGLOBAL g, PVAL value, bool ok, bool check) override;
void ReadColumn(PGLOBAL g) override;
void WriteColumn(PGLOBAL g) override;
bool AllocBuf(PGLOBAL g, bool mode);
void AllocNodes(PGLOBAL g, PXDOC dp);
protected:
//xmlNodePtr SelectSingleNode(xmlNodePtr node, char *name);
// Default constructor not to be used
XMLCOL(void) : COLBLK(1) {}
// Members
PXLIST Nl;
PXLIST Nlx;
PXNODE ColNode;
PXNODE ValNode;
PXNODE Cxnp;
PXNODE Vxnp;
PXATTR Vxap;
PXATTR AttNode;
PTDBXML Tdbp;
char *Valbuf; // To the node value buffer
char *Xname; // The node or attribute name
char* *Nodes; // The intermediate nodes
int Type; // 0: Attribute, 1: Tag, 2: position
int Nod; // The number of intermediate nodes
int Inod; // Index of multiple node
int Rank; // Position
bool Mul; // true for multiple column
bool Checked; // Was checked while Updating
int Long; // Buffer length
int Nx; // The last read row
int Sx; // The last read sub-row
int N; // The number of (multiple) values
PVAL To_Val; // To value used for Update/Insert
}; // end of class XMLCOL
/***********************************************************************/
/* Derived class XMLCOLX: used to replace a multiple XMLCOL by the */
/* derived class XMULCOL that has specialize read and write functions.*/
/* Note: this works only if the members of the derived class are the */
/* same than the ones of the original class (NO added members). */
/***********************************************************************/
class XMLCOLX : public XMLCOL {
public:
// Fake operator new used to change a filter into a derived filter
void * operator new(size_t size, PXMLCOL colp) {return colp;}
#if !defined(__BORLANDC__)
// Avoid warning C4291 by defining a matching dummy delete operator
void operator delete(void *, size_t size) {}
void operator delete(void *, PXMLCOL) {}
#endif
}; // end of class XMLCOLX
/***********************************************************************/
/* Class XMULCOL: XML table access method multiple column descriptor. */
/***********************************************************************/
class XMULCOL : public XMLCOLX {
public:
// The constructor must restore Value because XOBJECT has a void
// constructor called by default that set Value to NULL
XMULCOL(PVAL valp) {Value = valp; Mul = true;}
// Methods
void ReadColumn(PGLOBAL g) override;
void WriteColumn(PGLOBAL g) override;
}; // end of class XMULCOL
/***********************************************************************/
/* Class XPOSCOL: XML table column accessed by position. */
/***********************************************************************/
class XPOSCOL : public XMLCOLX {
public:
// The constructor must restore Value because XOBJECT has a void
// constructor called by default that set Value to NULL
XPOSCOL(PVAL valp) {Value = valp;}
// Methods
void ReadColumn(PGLOBAL g) override;
void WriteColumn(PGLOBAL g) override;
}; // end of class XPOSCOL
/***********************************************************************/
/* This is the class declaration for the XML catalog table. */
/***********************************************************************/
class TDBXCT : public TDBCAT {
public:
// Constructor
TDBXCT(PXMLDEF tdp);
protected:
// Specific routines
PQRYRES GetResult(PGLOBAL g) override;
// Members
PTOS Topt;
char *Db;
char *Tabn;
}; // end of class TDBXCT
#endif // INCLUDE_TDBXML
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