Oracle C++ Call Interface Programmer's Guide

More documents

Recommendations

Info

Audience Organization xxx The Oracle C++ Call Interface Programmer’s Guide is intended for programmers, system analysts, project managers, and other Oracle users who perform, or are interested in learning about, the following tasks: ■ Design and develop database applications in the Oracle environment. ■ Convert existing database applications to run in the Oracle environment. ■ Manage the development of database applications. To use this document, you need a basic understanding of object-oriented programming concepts, familiarity with the use of Structured Query Language (SQL), and a working knowledge of application development using C++. This document contains: PART I: OCCI Programming Part 1 (Chapter 1 through Chapter 7) provides information about how to program with OCCI to build scalable application solutions that provide access to relational and object data in an Oracle database. Chapter 1, "Introduction to OCCI" This chapter introduces you to OCCI and describes special terms and typographical conventions that are used in describing OCCI. Chapter 2, "Relational Programming" This chapter gives you the basic concepts needed to develop an OCCI program. It discusses the essential steps each OCCI program must include, and how to retrieve and understand error messages Chapter 3, "Object Programming" This chapter provides an introduction to the concepts involved when using OCCI to access objects in an Oracle database server. The chapter includes a discussion of basic object concepts and object navigational access, and the basic structure of object-relational applications.
Related Documentation Chapter 4, "Datatypes" This chapter discusses Oracle internal and external datatypes, and necessary data conversions. Chapter 5, "Introduction to LOBs" This chapter provides an intrduction to LOBs and the related classes and methods. Chapter 6, "Metadata" This chapter discusses how to use the MetaData() method to obtain information about schema objects and their associated elements. Chapter 7, "How to Use the Object Type Translator Utility" This chapter discusses the use of the Object Type Translator (OTT) to convert database object definitions to C++ representations for use in OCCI applications. PART II: The Application Programmer’s Interface Reference Part 2 (Chapter 8) describes OCCI classes and methods. Chapter 8, "OCCI Classes and Methods" This chapter describes the OCCI classes and methods for C++. PART III: Appendix Part 3 (Appendix A) presents the OCCI demonstration programs. Appendix A, "OCCI Demonstration Programs" This appendix identifies the OCCI demonstration programs and provides the code for each. For more information, see these Oracle resources: ■ Oracle9i Database Concepts ■ Oracle9i SQL Reference ■ Oracle9i Database Administrator’s Guide ■ Oracle9i Application Developer’s Guide - Object-Relational Features. xxxi
Page 1 and 2: Oracle® C++ Call Interface Program
Page 3 and 4: List List of Figures Tables Content
Page 5 and 6: Null and Truncated Data............
Page 7 and 8: 6 Metadata Overview of Metadata ...
Page 9 and 10: length() ..........................
Page 11 and 12: flushCache().......................
Page 13 and 14: getSecond() .......................
Page 15 and 16: cos()..............................
Page 17 and 18: operator new().....................
Page 19 and 20: isTruncated() .....................
Page 21 and 22: setCharacterStreamMode() ..........
Page 23 and 24: Index occiinh.typ .................
Page 25 and 26: List of Tables 2-1 Normal Data - No
Page 27 and 28: Oracle C++ Call Interface Programme
Page 29: Preface The Oracle C++ Call Interfa
Page 33 and 34: Conventions in Text We use various
Page 35 and 36: Convention Meaning Example UPPERCAS
Page 37 and 38: What’s New in Orace C++ Call Inte
Page 39: ■ Number Class ■ operator signe
Page 43 and 44: 1 Introduction to OCCI This chapter
Page 45 and 46: Building an OCCI Application Overvi
Page 47 and 48: Processing of SQL Statements In an
Page 49 and 50: Overview of PL/SQL SELECT dname FRO
Page 51 and 52: Object Support Client-Side Object C
Page 53 and 54: Metadata Class Object Support ■ B
Page 55 and 56: 2 Relational Programming This chapt
Page 57 and 58: . . . stmt->closeResultSet(rs); con
Page 59 and 60: const string poolUserName = "SCOTT"
Page 61 and 62: ■ executeArrayUpdate: To execute
Page 63 and 64: Standard Statements Types of SQL St
Page 65 and 66: Types of SQL Statements in the OCCI
Page 67 and 68: Executing SQL Queries Executing SQL
Page 69 and 70: Specifying the Query } Executing SQ
Page 71 and 72: Status Definitions Executing Statem
Page 73 and 74: Executing Statements Dynamically No
Page 75 and 76: Null and Truncated Data Error Handl
Page 77 and 78: Advanced Relational Techniques In T
Page 79 and 80: Note: Advanced Relational Technique
Page 81 and 82:
Optimizing Performance Advanced Rel
Page 83 and 84:
Advanced Relational Techniques indi
Page 85 and 86:
3 Object Programming This chapter p
Page 87 and 88:
Persistent Objects Working with Obj
Page 89 and 90:
Values In the context of this manua
Page 91 and 92:
See Also: Developing an OCCI Object
Page 93 and 94:
Figure 3-1 Basic Object Operational
Page 95 and 96:
Developing an OCCI Object Applicati
Page 97 and 98:
Overview of Associative Access Maxi
Page 99 and 100:
Retrieving an Object Reference (REF
Page 101 and 102:
} Overview of Navigational Access T
Page 103 and 104:
Overview of Complex Object Retrieva
Page 105 and 106:
■ The reference to the root purch
Page 107 and 108:
} void *operator new(size_t size, c
Page 109 and 110:
Freeing Objects Type Inheritance Ty
Page 111 and 112:
Type Inheritance Instance substitut
Page 113 and 114:
A Sample OCCI Application void *ope
Page 115 and 116:
} cout
Page 117 and 118:
} A Sample OCCI Application /* comm
Page 119 and 120:
4 Datatypes This chapter is a refer
Page 121 and 122:
Internal Datatypes Note: There are
Page 123 and 124:
External Datatypes ■ OCCI_SQLT_CH
Page 125 and 126:
Table 4-2 External Datatypes, C++ D
Page 127 and 128:
External Datatypes CHARZ The extern
Page 129 and 130:
External Datatypes FLOAT The extern
Page 131 and 132:
External Datatypes LONG The externa
Page 133 and 134:
OCCI BYTES OCCI CLOB OCCI DATE See
Page 135 and 136:
External Datatypes When RAW data in
Page 137 and 138:
External Datatypes is not an intege
Page 139 and 140:
Table 4-5 Data Conversions Internal
Page 141 and 142:
LONG RAW I/O LONG VARRAW I/O OCCI B
Page 143 and 144:
The following topics are covered in
Page 145 and 146:
External LOBs (BFILEs) Overview of
Page 147 and 148:
Table 5-1 OCCI LOB Classes and Meth
Page 149 and 150:
Creating LOBs Table 5-1 OCCI LOB Cl
Page 151 and 152:
LOB Classes and Methods Note: For i
Page 153 and 154:
{ Blob blob=rset->getBlob(1); if(bl
Page 155 and 156:
} blob.writeChunk(, buffer, BUFSIZE
Page 157 and 158:
Updating LOBs LOB Classes and Metho
Page 159 and 160:
Objects with LOB Attributes 5. Repi
Page 161 and 162:
6 Metadata This chapter describes h
Page 163 and 164:
Describing Database Metadata You ob
Page 165 and 166:
Metatdata Code Examples Table 6-1 A
Page 167 and 168:
Describing Database Metadata /* Cal
Page 169 and 170:
Attribute Reference . . /* Create a
Page 171 and 172:
Table 6-2 Attributes Belonging to A
Page 173 and 174:
Package Attributes Type Attributes
Page 175 and 176:
Type Attribute Attributes Table 6-8
Page 177 and 178:
Collection Attributes Table 6-10 At
Page 179 and 180:
Synonym Attributes Sequence Attribu
Page 181 and 182:
Table 6-14 Attributes Belonging to
Page 183 and 184:
List Attributes Table 6-15 Attribut
Page 185 and 186:
Table 6-18 Attributes Specific to D
Page 187 and 188:
7 How to Use the Object Type Transl
Page 189 and 190:
How to Use the OTT Utility the Type
Page 191 and 192:
How to Use the OTT Utility Example
Page 193 and 194:
}; virtual void writeSQL(oracle::oc
Page 195 and 196:
} streamOCCI_.setString(name); stre
Page 197 and 198:
Invoking the OTT Utility For global
Page 199 and 200:
Invoking the OTT Utility userid Par
Page 201 and 202:
Overview of the INTYPE File The lin
Page 203 and 204:
OTT Utility Datatype Mappings The O
Page 205 and 206:
OTT Utility Datatype Mappings Note:
Page 207 and 208:
the_clob CLOB, the_object object_ty
Page 209 and 210:
OTT Utility Datatype Mappings When
Page 211 and 212:
class other_type : public oracle::o
Page 213 and 214:
Overview of the OUTTYPE File its ve
Page 215 and 216:
Figure 7-1 The OTT Utility with OCC
Page 217 and 218:
The OTT Utility and OCCI Applicatio
Page 219 and 220:
}; static void *readSQL(void *ctxOC
Page 221 and 222:
public: }; void *operator new(size_
Page 223 and 224:
{ FullName *objOCCI_ = (FullName *)
Page 225 and 226:
excep.setErrorCtx(ctxOCCI_); } retu
Page 227 and 228:
} setVector(streamOCCI_, PREV_ADDR_
Page 229 and 230:
TYPE SCOTT.FULL_NAME AS FullName VE
Page 231 and 232:
}; The OTT Utility and OCCI Applica
Page 233 and 234:
***********************************
Page 235 and 236:
#endif Map Registry Function The OT
Page 237 and 238:
Page 239 and 240:
public: }; void *operator new(size_
Page 241 and 242:
}; static void *readSQL(void *ctxOC
Page 243 and 244:
eturn; } void CFullName::writeSQL(o
Page 245 and 246:
Page 247 and 248:
eturn oracle::occi::PObject::operat
Page 249 and 250:
Properties of OTT Markers Following
Page 251 and 252:
Where the Markers Can Be Used Carry
Page 253 and 254:
Carrying Forward User Added Code be
Page 255 and 256:
DROP TABLE PERSON_TAB; DROP TABLE A
Page 257 and 258:
Carrying Forward User Added Code AD
Page 259 and 260:
}; PERSON_O(); Carrying Forward Use
Page 261 and 262:
addr = new_addr; this->markModified
Page 263 and 264:
} return; } void ADDRESS_O::writeSQ
Page 265 and 266:
} streamOCCI_.setString(last_name);
Page 267 and 268:
mdemo1m.cpp // --------------------
Page 269 and 270:
conn->terminateStatement(stmt); //
Page 271 and 272:
Example OCCI Application Example OC
Page 273 and 274:
■ Example of C++ Source File for
Page 275 and 276:
OCCI_STD_NAMESPACE::string STATE; O
Page 277 and 278:
}; void *operator new(size_t size);
Page 279 and 280:
OCCI_STD_NAMESPACE::string CFullNam
Page 281 and 282:
} streamOCCI_.setString(FirstName);
Page 283 and 284:
{ if (objOCCI_->isNull()) streamOCC
Page 285 and 286:
OCCI_STD_NAMESPACE::string CPerson:
Page 287 and 288:
{ return oracle::occi::PObject::ope
Page 289 and 290:
#ifndef CPERSON_ORACLE # include "c
Page 291 and 292:
Example OCCI Application /*********
Page 293 and 294:
* initialize MyFullName */ MyFullNa
Page 295 and 296:
* Display all the information of My
Page 297 and 298:
Example OCCI Application conn, and
Page 299 and 300:
} RefAny jillrefany = resultSet2->g
Page 301 and 302:
Connection *conn = env->createConne
Page 303 and 304:
OTT Command Line Syntax OTT Utility
Page 305 and 306:
■ CPPFILE Parameter ■ ERRTYPE P
Page 307 and 308:
OTT Utility Reference CONFIG Parame
Page 309 and 310:
INITFUNC=filename OTT Utility Refer
Page 311 and 312:
See Also: "SCHEMA_NAMES Usage" on p
Page 313 and 314:
Structure of the INTYPE File OTT Ut
Page 315 and 316:
■ It appears in the INTYPE file.
Page 317 and 318:
struct px1_ind col1 }; typedef stru
Page 319 and 320:
OTT Utility Reference The Pro*C/C++
Page 321 and 322:
OTT Utility Reference Once the OTT
Page 323:
This part contains one chapter: ■
Page 326 and 327:
Summary of OCCI Classes Summary of
Page 328 and 329:
OCCI Classes and Methods using Decl
Page 330 and 331:
Bfile Class close() closeStream() T
Page 332 and 333:
Bfile Class isInitialized() isNull(
Page 334 and 335:
Bfile Class operator!=() read() Syn
Page 336 and 337:
Blob Class Blob Class The Blob clas
Page 338 and 339:
Blob Class close() closeStream() co
Page 340 and 341:
Blob Class getStream() isInitialize
Page 342 and 343:
Blob Class operator==() operator!=
Page 344 and 345:
Blob Class setNull() trim() write()
Page 346 and 347:
Blob Class buffer The buffer contai
Page 348 and 349:
Bytes Class getBytes() isNull() Par
Page 350 and 351:
Clob Class Clob Class The Clob clas
Page 352 and 353:
Clob Class append() close() closeSt
Page 354 and 355:
Clob Class getCharSetId() getChunkS
Page 356 and 357:
Clob Class open() operator=() opera
Page 358 and 359:
Clob Class setCharSetId() setCharSe
Page 360 and 361:
Clob Class write() Valid values are
Page 362 and 363:
Connection Class Connection Class T
Page 364 and 365:
Connection Class flushCache() This
Page 366 and 367:
Connection Class Syntax LNOCIServer
Page 368 and 369:
ConnectionPool Class createConnecti
Page 370 and 371:
ConnectionPool Class getMinConnecti
Page 372 and 373:
ConnectionPool Class Syntax void te
Page 374 and 375:
Date Class Summary of Date Methods
Page 376 and 377:
Date Class addDays() addMonths() da
Page 378 and 379:
Date Class getDate() getSystemDate(
Page 380 and 381:
Date Class operator==() operator!=(
Page 382 and 383:
Date Class operator
Page 384 and 385:
Date Class toZone() const string &n
Page 386 and 387:
Environment Class Environment Class
Page 388 and 389:
Environment Class Syntax Connection
Page 390 and 391:
Environment Class getCacheMaxSize()
Page 392 and 393:
Environment Class terminateConnecti
Page 394 and 395:
IntervalDS Class Constructs an Inte
Page 396 and 397:
IntervalDS Class fromText() getDay(
Page 398 and 399:
IntervalDS Class operator*=() opera
Page 400 and 401:
IntervalDS Class operator/=() opera
Page 402 and 403:
IntervalDS Class operator-=() opera
Page 404 and 405:
IntervalDS Class toText() This meth
Page 406 and 407:
IntervalYM Class The following code
Page 408 and 409:
IntervalYM Class getMonth() getYear
Page 410 and 411:
IntervalYM Class operator!=() opera
Page 412 and 413:
IntervalYM Class operator
Page 414 and 415:
IntervalYM Class set() setNull() to
Page 416 and 417:
Map Class Map Class The Map class i
Page 418 and 419:
MetaData Class MetaData Class A Met
Page 420 and 421:
MetaData Class Summary of MetaData
Page 422 and 423:
MetaData Class getMetaData() getNum
Page 424 and 425:
MetaData Class getVector() operator
Page 426 and 427:
Number Class Translates a native lo
Page 428 and 429:
Number Class nu4 = nu1 + nu2; /* Co
Page 430 and 431:
Number Class Table 8-14 Number Meth
Page 432 and 433:
Number Class arcTan2() ceil() cos()
Page 434 and 435:
Number Class hypCos() hypSin() hypT
Page 436 and 437:
Number Class operator++() operator-
Page 438 and 439:
Number Class operator-() operator-(
Page 440 and 441:
Number Class operator>=() operator=
Page 442 and 443:
Number Class operator%=() operator+
Page 444 and 445:
Number Class operator long() operat
Page 446 and 447:
Number Class round() setNull() shif
Page 448 and 449:
Number Class toText() trunc() Synta
Page 450 and 451:
PObject Class PObject Class OCCI pr
Page 452 and 453:
PObject Class isLocked() isNull() l
Page 454 and 455:
PObject Class operator new() pin()
Page 456 and 457:
Ref Class Ref Class The mapping in
Page 458 and 459:
Ref Class isClear() isNull() markDe
Page 460 and 461:
Ref Class operator=() ptr() Paramet
Page 462 and 463:
Ref Class setNull() unmarkDelete()
Page 464 and 465:
RefAny Class getConnection() getRef
Page 466 and 467:
ResultSet Class ResultSet Class Res
Page 468 and 469:
ResultSet Class Table 8-18 ResultSe
Page 470 and 471:
ResultSet Class getBfile() getBlob(
Page 472 and 473:
ResultSet Class getCurrentStreamCol
Page 474 and 475:
ResultSet Class getFloat() getInt()
Page 476 and 477:
ResultSet Class getNumber() getObje
Page 478 and 479:
ResultSet Class getString() getTime
Page 480 and 481:
ResultSet Class vector &vect); void
Page 482 and 483:
ResultSet Class isNull() isTruncate
Page 484 and 485:
ResultSet Class Parameters setBinar
Page 486 and 487:
ResultSet Class in the *length para
Page 488 and 489:
ResultSet Class setMaxColumnSize()
Page 490 and 491:
SQLException Class getMessage() set
Page 492 and 493:
Statement Class Table 8-20 Statemen
Page 494 and 495:
Statement Class Table 8-20 Statemen
Page 496 and 497:
Statement Class closeStream() execu
Page 498 and 499:
Statement Class arrayLength paramet
Page 500 and 501:
Statement Class getBfile() getBlob(
Page 502 and 503:
Statement Class getCurrentStreamIte
Page 504 and 505:
Statement Class getFloat() getInt()
Page 506 and 507:
Statement Class getObject() getOCIS
Page 508 and 509:
Statement Class getString() getTime
Page 510 and 511:
Statement Class vector &vect; void
Page 512 and 513:
Statement Class isNull() isTruncate
Page 514 and 515:
Statement Class setAutoCommit() set
Page 516 and 517:
Statement Class setBytes() x The pa
Page 518 and 519:
Statement Class Syntax void setDate
Page 520 and 521:
Statement Class setDataBufferArray(
Page 522 and 523:
Statement Class setDouble() setErro
Page 524 and 525:
Statement Class setIntervalDS() set
Page 526 and 527:
Statement Class setNumber() setObje
Page 528 and 529:
Statement Class setRef() setRowid()
Page 530 and 531:
Statement Class setUInt() setVector
Page 532 and 533:
Statement Class void setVector(Stat
Page 534 and 535:
Statement Class status() sqltype sq
Page 536 and 537:
Stream Class readLastBuffer() write
Page 538 and 539:
Timestamp Class Timestamp Class Thi
Page 540 and 541:
Timestamp Class } if(reft() on page
Page 542 and 543:
Timestamp Class getDate() getTime()
Page 544 and 545:
Timestamp Class intervalSub() isNul
Page 546 and 547:
Timestamp Class operator>=() operat
Page 548 and 549:
Timestamp Class setNull() setTime()
Page 550 and 551:
Timestamp Class toText() Return str
Page 553 and 554:
A OCCI Demonstration Programs Oracl
Page 555 and 556:
OCCI Demonstration Programs # 2. A
Page 557 and 558:
OCCI Demonstration Programs # 2. A
Page 559 and 560:
OCCI Demonstration Programs occidem
Page 561 and 562:
occiblob.cpp build_static: $(OBJS)
Page 563 and 564:
} /** * printing the blob data as i
Page 565 and 566:
occiclob.cpp { Blob blob = rset->ge
Page 567 and 568:
* populating the clob; */ void popu
Page 569 and 570:
int clobLength=clob.length (); cout
Page 571 and 572:
~occicoll () { env->terminateConnec
Page 573 and 574:
Deleting a row in a nested table vo
Page 575 and 576:
occidesc.cpp cout
Page 577 and 578:
OCCI Demonstration Programs cout
Page 579 and 580:
OCCI Demonstration Programs else co
Page 581 and 582:
cout
Page 583 and 584:
case OCCI_SQLT_LBI : return "LONG R
Page 585 and 586:
void insertBind (int c1, string c2)
Page 587 and 588:
{ OCCI Demonstration Programs strin
Page 589 and 590:
using namespace oracle::occi; using
Page 591 and 592:
fs_obj->setpartner(fs_partner); fs_
Page 593 and 594:
fs_ref->getleader(); /* Leader's Pa
Page 595 and 596:
occiobj.cpp OCCI Demonstration Prog
Page 597 and 598:
}catch(SQLException ex) { cout
Page 599 and 600:
occipobj.typ occipobj.cpp demo->upd
Page 601 and 602:
OCCI Demonstration Programs /** * I
Page 603 and 604:
OCCI Demonstration Programs RefAny
Page 605 and 606:
** * Destructor for the occipool te
Page 607 and 608:
#include #include using namespace
Page 609 and 610:
occistre.cpp OCCI Demonstration Pro
Page 611 and 612:
delete (demo); cout
Page 613 and 614:
A application-provided serializatio
Page 615 and 616:
OCCI DATE, 4-15 OCCI INTERVALDS, 4-
Page 617 and 618:
N RefAny methods, 8-139, 8-143 setD
Page 619 and 620:
RESULT_SET_AVAILABLE status, 2-17,
show all

Oracle C++ Call Interface Programmer's Guide

Create successful ePaper yourself

Delete template?

Save as template?