Oracle C++ Call Interface Programmer's Guide

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The OTT Utility and OCCI Applications The prototype of the register mapping function is written to a corresponding header file, RegisterMapping.h, and looks like the following: #ifndef REGISTERMAPPINGS_3_ORACLE # define REGISTERMAPPINGS_3_ORACLE #ifndef OCCI_ORACLE # include #endif #ifndef DEMO_3_ORACLE # include "demo_3.h" #endif void RegisterMappings_3(oracle::occi::Environment* envOCCI_); #endif Extending OTT C++ Classes To enhance the functionality of a class generated by the OTT utility, you can derive new classes. You can also add methods to a class, but Oracle does not recommend doing so due to an inherent risk. For an example of deriving a new class from an OTT-generated class, assume you want to generate the class CAddress from the SQL object type ADDRESS. Assume also that you want to write a class MyAddress to represent ADDRESS objects. The MyAddress class can be derived from CAddress. To perform this, the OTT utility must alter the code it generates: ■ By using the MyAddress class instead of the CAddress class to represent attributes whose database type is ADDRESS ■ By using the MyAddress class instead of the CAddress class to represent vector and REF elements whose database type is ADDRESS 7-50 Oracle C++ Call Interface Programmer’s Guide See Also: "Carrying Forward User Added Code" on page 7-62 for details on how to use OTT markers to retain code you want to add in OTT generated files.
The OTT Utility and OCCI Applications ■ By using the MyAddress class instead of the CAddress class as the base class for database object types that are inherited from ADDRESS. Even though a derived class is a subtype of MyAddress, the readSQL and writeSQL methods called are those of the CAddress class. To use the OTT utility to generate the CAddress class (that you derive the MyAddress class from), the following clause must be specified in the TYPE statement: TYPE ADDRESS GENERATE CAdress AS MyAddress Example for Extending OTT Classes Note: When a class is both extended and used as a base class for another generated class, the inheriting type class and the inherited type class must be generated in separate files. Given the database types FULL_NAME, ADDRESS, PERSON, and PFGRFDENT as they were created before and changing the INTYPE file to include the GENERATE ... AS clause: CASE = SAME MAPFILE = RegisterMappings_5.cpp TYPE FULL_NAME GENERATE CFullName AS MyFullName TRANSLATE first_name as FirstName last_name as LastName TYPE ADDRESS GENERATE CAddress AS MyAddress TYPE PERSON GENERATE CPerson AS MyPerson TYPE STUDENT GENERATE CStudent AS MyStudent The following C++ source file (with the extension .cpp) is generated by the OTT utility: #ifndef MYFILENAME_ORACLE # define MYFILENAME_ORACLE #ifndef OCCI_ORACLE # include #endif How to Use the Object Type Translator Utility 7-51
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Oracle® C++ Call Interface Program
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List List of Figures Tables Content
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Null and Truncated Data............
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6 Metadata Overview of Metadata ...
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length() ..........................
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flushCache().......................
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getSecond() .......................
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cos()..............................
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operator new().....................
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isTruncated() .....................
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setCharacterStreamMode() ..........
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Index occiinh.typ .................
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List of Tables 2-1 Normal Data - No
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Oracle C++ Call Interface Programme
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Preface The Oracle C++ Call Interfa
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Related Documentation Chapter 4, "D
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Conventions in Text We use various
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Convention Meaning Example UPPERCAS
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What’s New in Orace C++ Call Inte
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■ Number Class ■ operator signe
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1 Introduction to OCCI This chapter
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Building an OCCI Application Overvi
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Processing of SQL Statements In an
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Overview of PL/SQL SELECT dname FRO
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Object Support Client-Side Object C
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Metadata Class Object Support ■ B
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2 Relational Programming This chapt
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. . . stmt->closeResultSet(rs); con
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const string poolUserName = "SCOTT"
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■ executeArrayUpdate: To execute
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Standard Statements Types of SQL St
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Types of SQL Statements in the OCCI
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Executing SQL Queries Executing SQL
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Specifying the Query } Executing SQ
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Status Definitions Executing Statem
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Executing Statements Dynamically No
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Null and Truncated Data Error Handl
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Advanced Relational Techniques In T
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Note: Advanced Relational Technique
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Optimizing Performance Advanced Rel
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Advanced Relational Techniques indi
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3 Object Programming This chapter p
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Persistent Objects Working with Obj
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Values In the context of this manua
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See Also: Developing an OCCI Object
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Figure 3-1 Basic Object Operational
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Developing an OCCI Object Applicati
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Overview of Associative Access Maxi
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Retrieving an Object Reference (REF
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} Overview of Navigational Access T
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Overview of Complex Object Retrieva
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■ The reference to the root purch
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} void *operator new(size_t size, c
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Freeing Objects Type Inheritance Ty
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Type Inheritance Instance substitut
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A Sample OCCI Application void *ope
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} cout
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} A Sample OCCI Application /* comm
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4 Datatypes This chapter is a refer
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Internal Datatypes Note: There are
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External Datatypes ■ OCCI_SQLT_CH
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Table 4-2 External Datatypes, C++ D
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External Datatypes CHARZ The extern
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External Datatypes FLOAT The extern
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External Datatypes LONG The externa
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OCCI BYTES OCCI CLOB OCCI DATE See
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External Datatypes When RAW data in
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External Datatypes is not an intege
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Table 4-5 Data Conversions Internal
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LONG RAW I/O LONG VARRAW I/O OCCI B
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The following topics are covered in
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External LOBs (BFILEs) Overview of
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Table 5-1 OCCI LOB Classes and Meth
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Creating LOBs Table 5-1 OCCI LOB Cl
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LOB Classes and Methods Note: For i
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{ Blob blob=rset->getBlob(1); if(bl
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} blob.writeChunk(, buffer, BUFSIZE
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Updating LOBs LOB Classes and Metho
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Objects with LOB Attributes 5. Repi
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6 Metadata This chapter describes h
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Describing Database Metadata You ob
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Metatdata Code Examples Table 6-1 A
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Describing Database Metadata /* Cal
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Attribute Reference . . /* Create a
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Table 6-2 Attributes Belonging to A
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Package Attributes Type Attributes
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Type Attribute Attributes Table 6-8
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Collection Attributes Table 6-10 At
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Synonym Attributes Sequence Attribu
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Table 6-14 Attributes Belonging to
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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: #endif Map Registry Function The OT
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: The OTT Utility and OCCI Applicatio
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:
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{ return oracle::occi::PObject::ope
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#ifndef CPERSON_ORACLE # include "c
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Example OCCI Application /*********
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* initialize MyFullName */ MyFullNa
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* Display all the information of My
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Example OCCI Application conn, and
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} RefAny jillrefany = resultSet2->g
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Connection *conn = env->createConne
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OTT Command Line Syntax OTT Utility
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■ CPPFILE Parameter ■ ERRTYPE P
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OTT Utility Reference CONFIG Parame
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INITFUNC=filename OTT Utility Refer
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See Also: "SCHEMA_NAMES Usage" on p
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Structure of the INTYPE File OTT Ut
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■ It appears in the INTYPE file.
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struct px1_ind col1 }; typedef stru
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OTT Utility Reference The Pro*C/C++
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OTT Utility Reference Once the OTT
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This part contains one chapter: ■
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Summary of OCCI Classes Summary of
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OCCI Classes and Methods using Decl
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Bfile Class close() closeStream() T
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Bfile Class isInitialized() isNull(
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Bfile Class operator!=() read() Syn
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Blob Class Blob Class The Blob clas
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Blob Class close() closeStream() co
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Blob Class getStream() isInitialize
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Blob Class operator==() operator!=
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Blob Class setNull() trim() write()
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Blob Class buffer The buffer contai
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Bytes Class getBytes() isNull() Par
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Clob Class Clob Class The Clob clas
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Clob Class append() close() closeSt
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Clob Class getCharSetId() getChunkS
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Clob Class open() operator=() opera
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Clob Class setCharSetId() setCharSe
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Clob Class write() Valid values are
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Connection Class Connection Class T
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Connection Class flushCache() This
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Connection Class Syntax LNOCIServer
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ConnectionPool Class createConnecti
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ConnectionPool Class getMinConnecti
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ConnectionPool Class Syntax void te
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Date Class Summary of Date Methods
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Date Class addDays() addMonths() da
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Date Class getDate() getSystemDate(
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Date Class operator==() operator!=(
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Date Class operator
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Date Class toZone() const string &n
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Environment Class Environment Class
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Environment Class Syntax Connection
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Environment Class getCacheMaxSize()
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Environment Class terminateConnecti
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IntervalDS Class Constructs an Inte
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IntervalDS Class fromText() getDay(
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IntervalDS Class operator*=() opera
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IntervalDS Class operator/=() opera
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IntervalDS Class operator-=() opera
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IntervalDS Class toText() This meth
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IntervalYM Class The following code
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IntervalYM Class getMonth() getYear
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IntervalYM Class operator!=() opera
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IntervalYM Class operator
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IntervalYM Class set() setNull() to
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Map Class Map Class The Map class i
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MetaData Class MetaData Class A Met
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MetaData Class Summary of MetaData
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MetaData Class getMetaData() getNum
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MetaData Class getVector() operator
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Number Class Translates a native lo
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Number Class nu4 = nu1 + nu2; /* Co
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Number Class Table 8-14 Number Meth
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Number Class arcTan2() ceil() cos()
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Number Class hypCos() hypSin() hypT
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Number Class operator++() operator-
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Number Class operator-() operator-(
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Number Class operator>=() operator=
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Number Class operator%=() operator+
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Number Class operator long() operat
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Number Class round() setNull() shif
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Number Class toText() trunc() Synta
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PObject Class PObject Class OCCI pr
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PObject Class isLocked() isNull() l
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PObject Class operator new() pin()
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Ref Class Ref Class The mapping in
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Ref Class isClear() isNull() markDe
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Ref Class operator=() ptr() Paramet
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Ref Class setNull() unmarkDelete()
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RefAny Class getConnection() getRef
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ResultSet Class ResultSet Class Res
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ResultSet Class Table 8-18 ResultSe
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ResultSet Class getBfile() getBlob(
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ResultSet Class getCurrentStreamCol
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ResultSet Class getFloat() getInt()
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ResultSet Class getNumber() getObje
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ResultSet Class getString() getTime
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ResultSet Class vector &vect); void
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ResultSet Class isNull() isTruncate
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ResultSet Class Parameters setBinar
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ResultSet Class in the *length para
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ResultSet Class setMaxColumnSize()
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SQLException Class getMessage() set
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Statement Class Table 8-20 Statemen
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Statement Class Table 8-20 Statemen
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Statement Class closeStream() execu
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Statement Class arrayLength paramet
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Statement Class getBfile() getBlob(
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Statement Class getCurrentStreamIte
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Statement Class getFloat() getInt()
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Statement Class getObject() getOCIS
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Statement Class getString() getTime
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Statement Class vector &vect; void
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Statement Class isNull() isTruncate
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Statement Class setAutoCommit() set
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Statement Class setBytes() x The pa
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Statement Class Syntax void setDate
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Statement Class setDataBufferArray(
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Statement Class setDouble() setErro
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Statement Class setIntervalDS() set
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Statement Class setNumber() setObje
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Statement Class setRef() setRowid()
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Statement Class setUInt() setVector
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Statement Class void setVector(Stat
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Statement Class status() sqltype sq
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Stream Class readLastBuffer() write
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Timestamp Class Timestamp Class Thi
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Timestamp Class } if(reft() on page
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Timestamp Class getDate() getTime()
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Timestamp Class intervalSub() isNul
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Timestamp Class operator>=() operat
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Timestamp Class setNull() setTime()
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Timestamp Class toText() Return str
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A OCCI Demonstration Programs Oracl
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OCCI Demonstration Programs # 2. A
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OCCI Demonstration Programs # 2. A
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OCCI Demonstration Programs occidem
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occiblob.cpp build_static: $(OBJS)
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} /** * printing the blob data as i
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occiclob.cpp { Blob blob = rset->ge
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* populating the clob; */ void popu
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int clobLength=clob.length (); cout
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~occicoll () { env->terminateConnec
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Deleting a row in a nested table vo
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occidesc.cpp cout
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OCCI Demonstration Programs cout
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OCCI Demonstration Programs else co
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cout
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case OCCI_SQLT_LBI : return "LONG R
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void insertBind (int c1, string c2)
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{ OCCI Demonstration Programs strin
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using namespace oracle::occi; using
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fs_obj->setpartner(fs_partner); fs_
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fs_ref->getleader(); /* Leader's Pa
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occiobj.cpp OCCI Demonstration Prog
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}catch(SQLException ex) { cout
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occipobj.typ occipobj.cpp demo->upd
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OCCI Demonstration Programs /** * I
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OCCI Demonstration Programs RefAny
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** * Destructor for the occipool te
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#include #include using namespace
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occistre.cpp OCCI Demonstration Pro
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delete (demo); cout
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A application-provided serializatio
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OCCI DATE, 4-15 OCCI INTERVALDS, 4-
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N RefAny methods, 8-139, 8-143 setD
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RESULT_SET_AVAILABLE status, 2-17,
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