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/***********************************************************************/
/* JDBConn.h : header file for the JDBC connection classes. */
/***********************************************************************/
//nclude <windows.h> /* Windows include file */
//nclude <windowsx.h> /* Message crackers */
/***********************************************************************/
/* Included C-definition files required by the interface. */
/***********************************************************************/
#include "block.h"
/***********************************************************************/
/* JDBC interface. */
/***********************************************************************/
#include <jni.h>
/***********************************************************************/
/* Constants and defines. */
/***********************************************************************/
// Miscellaneous sizing info
#define MAX_NUM_OF_MSG 10 // Max number of error messages
//efine MAX_CURRENCY 30 // Max size of Currency($) string
#define MAX_TNAME_LEN 32 // Max size of table names
//efine MAX_FNAME_LEN 256 // Max size of field names
//efine MAX_STRING_INFO 256 // Max size of string from SQLGetInfo
//efine MAX_DNAME_LEN 256 // Max size of Recordset names
#define MAX_CONNECT_LEN 512 // Max size of Connect string
//efine MAX_CURSOR_NAME 18 // Max size of a cursor name
#define DEFAULT_FIELD_TYPE 0 // TYPE_NULL
#if !defined(__WIN__)
typedef unsigned char *PUCHAR;
#endif // !__WIN__
// Field Flags, used to indicate status of fields
//efine SQL_FIELD_FLAG_DIRTY 0x1
//efine SQL_FIELD_FLAG_NULL 0x2
// Update options flags
//efine SQL_SETPOSUPDATES 0x0001
//efine SQL_POSITIONEDSQL 0x0002
//efine SQL_GDBOUND 0x0004
enum JCATINFO {
CAT_TAB = 1, // JDBC Tables
CAT_COL = 2, // JDBC Columns
CAT_KEY = 3, // JDBC PrimaryKeys
//CAT_STAT = 4, // SQLStatistics
//CAT_SPC = 5 // SQLSpecialColumns
};
/***********************************************************************/
/* This structure is used to control the catalog functions. */
/***********************************************************************/
typedef struct tagJCATPARM {
JCATINFO Id; // Id to indicate function
PQRYRES Qrp; // Result set pointer
PUCHAR DB; // Database (Schema)
PUCHAR Tab; // Table name or pattern
PUCHAR Pat; // Table type or column pattern
} JCATPARM;
typedef jint(JNICALL *CRTJVM) (JavaVM **, void **, void *);
typedef jint(JNICALL *GETJVM) (JavaVM **, jsize, jsize *);
// JDBC connection to a data source
class TDBJDBC;
class JDBCCOL;
class JDBConn;
class TDBXJDC;
/***********************************************************************/
/* JDBConn class. */
/***********************************************************************/
class JDBConn : public BLOCK {
friend class TDBJDBC;
friend class TDBXJDC;
//friend PQRYRES GetColumnInfo(PGLOBAL, char*&, char *, int, PVBLK&);
private:
JDBConn(); // Standard (unused) constructor
public:
JDBConn(PGLOBAL g, TDBJDBC *tdbp);
int Open(PSZ jpath, PJPARM sop);
int Rewind(char *sql);
void Close(void);
PQRYRES AllocateResult(PGLOBAL g);
// Attributes
public:
char *GetQuoteChar(void) { return m_IDQuoteChar; }
// Database successfully opened?
bool IsOpen(void) { return m_Opened; }
//PSZ GetStringInfo(ushort infotype);
int GetMaxValue(int infotype);
//PSZ GetConnect(void) { return m_Connect; }
public:
// Operations
//void SetLoginTimeout(DWORD sec) {m_LoginTimeout = sec;}
//void SetQueryTimeout(DWORD sec) {m_QueryTimeout = sec;}
//void SetUserName(PSZ user) {m_User = user;}
//void SetUserPwd(PSZ pwd) {m_Pwd = pwd;}
int GetResultSize(char *sql, JDBCCOL *colp);
int ExecuteQuery(char *sql);
int ExecuteUpdate(char *sql);
int Fetch(int pos = 0);
bool PrepareSQL(char *sql);
int ExecuteSQL(void);
bool SetParam(JDBCCOL *colp);
int ExecSQLcommand(char *sql);
void SetColumnValue(int rank, PSZ name, PVAL val);
int GetCatInfo(JCATPARM *cap);
//bool GetDataSources(PQRYRES qrp);
bool GetDrivers(PQRYRES qrp);
PQRYRES GetMetaData(PGLOBAL g, char *src);
public:
// Set static variables
static void SetJVM(void)
{ LibJvm = NULL; CreateJavaVM = NULL; GetCreatedJavaVMs = NULL; }
static void ResetJVM(void);
static bool GetJVM(PGLOBAL g);
// Implementation
public:
//virtual ~JDBConn();
// JDBC operations
protected:
char *Check(void);
//void ThrowDJX(int rc, PSZ msg/*, HSTMT hstmt = SQL_NULL_HSTMT*/);
//void ThrowDJX(PSZ msg);
//void Free(void);
protected:
// Members
#if defined(__WIN__)
static HANDLE LibJvm; // Handle to the jvm DLL
#else // !__WIN__
static void *LibJvm; // Handle for the jvm shared library
#endif // !__WIN__
static CRTJVM CreateJavaVM;
static GETJVM GetCreatedJavaVMs;
PGLOBAL m_G;
TDBJDBC *m_Tdb;
JavaVM *jvm; // Pointer to the JVM (Java Virtual Machine)
JNIEnv *env; // Pointer to native interface
jclass jdi; // Pointer to the JdbcInterface class
jobject job; // The JdbcInterface class object
jmethodID xqid; // The ExecuteQuery method ID
jmethodID xuid; // The ExecuteUpdate method ID
jmethodID xid; // The Execute method ID
jmethodID grs; // The GetResult method ID
jmethodID readid; // The ReadNext method ID
jmethodID fetchid; // The Fetch method ID
jmethodID typid; // The ColumnType method ID
jmethodID prepid; // The CreatePrepStmt method ID
jmethodID xpid; // The ExecutePrep method ID
jmethodID pcid; // The ClosePrepStmt method ID
//DWORD m_LoginTimeout;
//DWORD m_QueryTimeout;
//DWORD m_UpdateOptions;
char m_IDQuoteChar[2];
PSZ m_Driver;
PSZ m_Url;
PSZ m_User;
PSZ m_Pwd;
int m_Ncol;
int m_Aff;
int m_Rows;
int m_Fetch;
int m_RowsetSize;
jboolean m_Updatable;
jboolean m_Transact;
jboolean m_Scrollable;
bool m_Opened;
bool m_Full;
}; // end of JDBConn class definition
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