Programming Guide - Actian

More documents

Recommendations

Info

How You Can Access a Database with DataStream ObjectsRequired OperationsIsDBHandleFieldSet to TRUE if the column's value is to be retrieved as a DBHandle and thetarget expression evaluates to a bitmap object or string object to beloaded using this DBHandleDefault: FALSEIsInsertTargetSet to TRUE if the column is used as a target for an insert statementDefault: FALSEIsSelectTargetSet to TRUE if the column is used as a target for a select statementDefault: FALSEIsUpdateTargetSet to TRUE if the column is used as a target for an update statementDefault: FALSEIsDeleteWhereSet to TRUE if the column is used as a where clause element for a deletestatementDefault: FALSEIsUpdateWhereSet to TRUE if the column is used as a where clause element for an updatestatementDefault: FALSEThe following operations are required to create a query object:1. Provide the parameters for building the select clause:a. Load the name of each database column into the ColumnNameattribute of DataStream's Columns array attribute.b. Supply the name of the target field or variable to the Expressionattribute of the Targets attribute of the Columns array attribute (forevery column selected from a database).c. Set the value of IsSelectTarget to TRUE for every column selected fromthe database.178 <strong>Programming</strong> <strong>Guide</strong>
How You Can Access a Database with DataStream Objectsd. Set the value of QueryParm's IsUpdateTarget to TRUE for everydatabase column that allows updates.e. Set the value of QueryParm's IsInsertTarget to TRUE for everydatabase column that allows insertions.2. Provide the parameters for building the from clause:a. Specify the name of the table or tables being accessed in theQueryTable's TableName attribute.b. Supply tables to the FromTable array attribute of the Columns arrayattribute (required only if a column appears in more than one table).3. Provide the parameters for building the where clause (if desired):a. For update operations, set the value of QueryParm's IsUpdateWhere toTRUE for every column that is to be part of the where clause.b. For delete operations, set the value of QueryParm's IsDeleteWhere toTRUE for every column (usually PrimaryKey columns) that is to be partof the where clause.c. For select operations, provide values for QueryObject's RunTimeWhereattribute (if desired).4. Provide the parameters for building the order by clause (if desired):a. Set the value of the Columns array attribute's OrderBy attribute to anappropriate sequence number; that is, set the primary column to 1 andthe secondary column to 2, and so on. If the sort order for a particularcolumn should be descending, then the sequence number's sign shouldbe changed to negative (for example, -1 or -2).b. Supply the name or names of database columns to the AsNameattribute of the Columns array attribute for all columns to be used inthe order by clause.5. Provide the parameters for building the group by clause (if desired):a. Set the value of the Columns array attribute's GroupBy attribute to anappropriate sequence number, such as 1 for the primary column and 2for the secondary column.b. Supply the name or names of database columns to the AsNameattribute of the Columns array attribute for all columns to be used inthe group by clause.6. Provide the parameters for building the having clause by entering anappropriate string into QueryObject's HavingClause attribute (if desired).To execute the query and manipulate the data, you use most of the sameDataStream methods used in running SQLSelect objects. However, becauseyou do not specify the select query, you cannot use the SetCols method inbuilding a query object.Working with a Database 179
Page 1 and 2:
Ingres OpenROAD ® 2006Programming
Page 3 and 4:
ContentsChapter 1: Introduction 13I
Page 5 and 6:
Using an Object-oriented Approach t
Page 7 and 8:
How You Can Retrieve Array Informat
Page 9 and 10:
Chapter 12: Managing Event Queues 3
Page 11 and 12:
Chapter 17: Preprocessing Your 4GL
Page 13 and 14:
Chapter 1: IntroductionThis section
Page 15 and 16:
ConventionsConventionsThe following
Page 17:
Your Support OptionsYour Support Op
Page 20 and 21:
OpenROAD NamesThe rules for these n
Page 22 and 23:
OpenROAD Names3. Enclosing field sc
Page 24 and 25:
OpenROAD NamesThe following code ex
Page 26 and 27:
VariablesThe following illustrates
Page 28 and 29:
VariablesIn the first example, film
Page 30 and 31:
VariablesOpenROAD checks references
Page 32 and 33:
VariablesHow You Can Declare Dynami
Page 34 and 35:
VariablesFor example, assume that y
Page 36 and 37:
ExpressionsHowever, you cannot use
Page 38 and 39:
ExpressionsThe general syntax for h
Page 40 and 41:
ExpressionsCurSessionSpecifies, for
Page 42 and 43:
ExpressionsString OperatorThe conca
Page 44 and 45:
ExpressionsOperatorlikenot likeOper
Page 46 and 47:
Expressions• You can use the esca
Page 48 and 49:
ExpressionsBecause procedures can r
Page 50 and 51:
System-defined FunctionsThis rule h
Page 52 and 53:
System-defined FunctionsNameOperand
Page 54 and 55:
System-defined FunctionsName Operan
Page 56 and 57:
System-defined FunctionsNameshift(c
Page 58 and 59:
System-defined FunctionsSome date f
Page 60 and 61:
System-defined FunctionsThe followi
Page 62 and 63:
System-defined FunctionsCount Funct
Page 64 and 65:
System-defined FunctionsResult Data
Page 67 and 68:
Chapter 3: Writing Scripts and Proc
Page 69 and 70:
ScriptsDeclare local variables that
Page 71 and 72:
ScriptsUserEventSpecifies a user ev
Page 73 and 74:
ScriptsExample—Field and Menu Ite
Page 75 and 76:
ProceduresOpenROAD lets you create
Page 77 and 78:
ProceduresReturning from a Procedur
Page 79 and 80:
ProceduresExample—Local Procedure
Page 81 and 82:
Procedures4GL DataTypedatemoneyfloa
Page 83 and 84:
Calling Procedures• In this call
Page 85 and 86:
Calling ProceduresparameterAssigns
Page 87 and 88:
How Procedure Handles Work (ProcHan
Page 89 and 90:
Page 91 and 92:
Page 93:
Compiler LimitationsYou can avoid t
Page 96 and 97:
How You Can Invoke FramesHow the Cu
Page 98 and 99:
How You Can Invoke FramesHow You Ca
Page 100 and 101:
How You Can Invoke FramesFor more i
Page 102 and 103:
How You Can Invoke FramesFor exampl
Page 104 and 105:
How You Can Invoke FramesIf the obj
Page 106 and 107:
How You Can Invoke FramesHow You Ca
Page 108 and 109:
How You Can Invoke Frames• Prompt
Page 110 and 111:
How You Can Invoke FramesThe syntax
Page 112 and 113:
How You Can Run Non-interactive App
Page 114 and 115:
How You Can Reference ObjectsHow Yo
Page 116 and 117:
How You Can Reference ObjectsHow Yo
Page 118 and 119:
How You Can Reference ObjectsUse an
Page 120 and 121:
Using an Object-oriented Approach t
Page 122 and 123:
InheritanceClass RelationshipsYou c
Page 124 and 125:
InheritanceYou can specify a user c
Page 126 and 127:
InheritanceThe Terminate method is
Page 128 and 129: How You Can Create a User ClassWhen
Page 130 and 131: How You Can Create a User ClassHow
Page 132 and 133: How You Can Create a User Class3. G
Page 134 and 135: How You Can Create a User ClassTo e
Page 136 and 137: External ClassesHow You Can Use Ext
Page 138 and 139: External ClassesExample—ActiveX C
Page 140 and 141: How You Can Manipulate Objects Gene
Page 142 and 143: Overview of the OpenROAD System Cla
Page 148 and 149: How You Can Access a Database with
Page 182 and 183: How You Can Manage TransactionsHow
Page 184 and 185: How You Can Manage TransactionsDivi
Page 186 and 187: How You Can Manage TransactionsTo c
Page 188 and 189: How Programming for Multiple Sessio
Page 198 and 199: Handling Database ErrorsIn OpenROAD
Page 200 and 201: Handling Database ErrorsIf a databa
Page 202 and 203: Handling Database ErrorsFor example
Page 204 and 205: Handling Database Errorsbeginerr_no
Page 206 and 207: Arrays and Table Fields—Conceptua
Page 208 and 209: ArraysBecause an individual attribu
Page 210 and 211: ArraysDeclaring an array variable d
Page 212 and 213: ArraysThe following statement puts
Page 214 and 215: Arraysfor i = custtable.FirstRow to
Page 216 and 217: ArraysHow You Can Add Rows to an Ar
Page 218 and 219: ArraysThe inserted row is blank bec
Page 220 and 221: ArraysThe following code fragment i
Page 222 and 223: ArraysThese attributes are:AllRowsR
Page 224 and 225: ArraysAttributes used in a sort can
Page 226 and 227: ArraysThe format parameter can be a
Page 228 and 229:
Table FieldsTable Fields and Associ
Page 230 and 231:
Table FieldsThe following applicati
Page 232 and 233:
Table FieldsThis syntax references
Page 234 and 235:
Table FieldsFor example, the follow
Page 236 and 237:
Table Field OperationsTable Field C
Page 238 and 239:
Table Field OperationsHow You Can U
Page 240 and 241:
Table Field OperationsWhen you use
Page 242 and 243:
Table Field OperationsBiases can be
Page 244 and 245:
Table Field OperationsThe following
Page 246 and 247:
Table Field OperationsHow You Can T
Page 248 and 249:
Table Field OperationsTableField Me
Page 250 and 251:
Table Field OperationsFor example,
Page 252 and 253:
Table Field OperationsControlling M
Page 254 and 255:
CollectionsCollectionsA collection
Page 256 and 257:
Collections// Open a workbook and p
Page 258 and 259:
Listview_Treeview_DemoImport the De
Page 260 and 261:
Listview FieldsListview FieldsA lis
Page 262 and 263:
Listview FieldsextensionSpecifies a
Page 264 and 265:
Listview FieldsImageIndexSpecifies
Page 266 and 267:
TreeNode and Tree ClassesHeaderClic
Page 268 and 269:
TreeNode and Tree ClassesMaintenanc
Page 270 and 271:
Treeview FieldsHow You Can Build a
Page 272 and 273:
Treeview FieldsThe second window is
Page 274 and 275:
Treeview FieldsThe tree_ex2_class h
Page 277 and 278:
Chapter 9: Working with Images and
Page 279 and 280:
How You Can Work with ImagesThe fol
Page 281 and 282:
How You Can Work with ImagesThe Col
Page 283 and 284:
How You Can Work with ImagesThe Bit
Page 285 and 286:
How You Can Work with Images5. Add
Page 287 and 288:
How You Can Work with Text StringsD
Page 289 and 290:
How You Can Work with Text StringsH
Page 291 and 292:
Page 293:
Page 296 and 297:
How You Can Call 3GL ProceduresIn t
Page 298 and 299:
How You Can Use Exec 4GL Statements
Page 300 and 301:
Page 302 and 303:
Page 304 and 305:
Page 306 and 307:
How You Can Link 3GL ProceduresHow
Page 308 and 309:
Sample 3GL ProceduresExec 4GL and E
Page 310 and 311:
How You Can Use Data Entry Error Ha
Page 312 and 313:
Page 314 and 315:
Page 317 and 318:
Chapter 12: Managing Event QueuesTh
Page 319 and 320:
Event-based ProgrammingThe followin
Page 321 and 322:
Event-based ProgrammingEvent TypesT
Page 323 and 324:
Event-based ProgrammingField Events
Page 325 and 326:
Event-based ProgrammingBecause all
Page 327 and 328:
Event-based ProgrammingThe followin
Page 329 and 330:
Event-based ProgrammingThe resume s
Page 331:
Event-based ProgrammingNote: The da
Page 334 and 335:
Communicating Between OpenROAD Fram
Page 336 and 337:
Page 338 and 339:
Page 340 and 341:
Page 342 and 343:
Page 344 and 345:
Page 346 and 347:
Page 348 and 349:
How You Can Communicate with an Ext
Page 350 and 351:
Page 352 and 353:
Page 354 and 355:
Page 356 and 357:
Page 358 and 359:
How You Can Communicate Between Ope
Page 360 and 361:
How You Can Communicate Between Ope
Page 363 and 364:
Chapter 14: Creating Dynamic Frames
Page 365 and 366:
How You Can Change Field and Frame
Page 367 and 368:
Page 369 and 370:
Page 371 and 372:
Page 373 and 374:
How You Can Create and Modify Field
Page 375 and 376:
Page 377 and 378:
Page 379 and 380:
How You Can Remove Fields Dynamical
Page 381 and 382:
How You Can Declare a Composite Fie
Page 383 and 384:
How You Can Manipulate Data in Dyna
Page 385 and 386:
Page 387 and 388:
Page 389:
How You Can Manage Operations with
Page 392 and 393:
How You Can Build a Frame Dynamical
Page 394 and 395:
Page 396 and 397:
Page 398 and 399:
Page 400 and 401:
Page 402 and 403:
Page 404 and 405:
Page 406 and 407:
Page 408 and 409:
Page 410 and 411:
Page 412 and 413:
Page 414 and 415:
Page 416 and 417:
Page 418 and 419:
Dynamic Statements ConsiderationsDy
Page 420 and 421:
How You Can Write an AssistantNote:
Page 422 and 423:
How You Can Write an AssistantFirst
Page 424 and 425:
How You Can Write an AssistantBecau
Page 426 and 427:
How You Can Ensure Compatibility Be
Page 428 and 429:
Page 430 and 431:
Page 433 and 434:
Chapter 17: Preprocessing Your 4GL
Page 435 and 436:
PreprocessorGeneral Preprocessor St
Page 437 and 438:
PreprocessorThe #define StatementTh
Page 439 and 440:
Error ProcessingGuidelines for Usin
Page 441 and 442:
Chapter 18: Debugging Your Applicat
Page 443 and 444:
How You Can Test an ApplicationHow
Page 445 and 446:
How You Can Use Break ConditionsTo
Page 447 and 448:
How You Can Use Break Conditions3.
Page 449 and 450:
How You Can Use Break ConditionsWay
Page 451 and 452:
How You Can Use Break ConditionsSet
Page 453 and 454:
How You Can Use Break Conditions•
Page 455 and 456:
How You Can Use Break ConditionsMet
Page 457 and 458:
How You Can Log Trace InformationDa
Page 459 and 460:
How You Can Monitor a Running Appli
Page 461 and 462:
How You Can Monitor a Running Appli
Page 463 and 464:
How You Can Debug Database QueriesT
Page 465 and 466:
How Debugging an Application WorksS
Page 467 and 468:
How Debugging an Application WorksH
Page 469 and 470:
Page 471 and 472:
How Debugging an Application WorksW
Page 473 and 474:
How Debugging an Application WorksH
Page 475 and 476:
How Debugging an Application WorksW
Page 477 and 478:
Page 479 and 480:
How Debugging an Application WorksL
Page 481 and 482:
How Debugging an Application WorksA
Page 483 and 484:
Appendix A: SQL Syntax SummaryThis
Page 485 and 486:
SQL Syntax Summarygrant all [privil
Page 487:
OpenSQL Syntax SummaryOpenSQL Synta
Page 490 and 491:
Operating System CommandsThe follow
Page 492 and 493:
BitmapObject classThe BitmapObject
Page 494 and 495:
external classAn external class def
Page 496 and 497:
local variableLocal variables conta
Page 498 and 499:
StringObject classThe StringObject
Page 501 and 502:
Index'' ' (single quotation marks)c
Page 503 and 504:
Attributesdefined • 28referencing
Page 505 and 506:
using to copy data • 244using wit
Page 507 and 508:
application threads • 444array di
Page 509 and 510:
examining values • 473hexadecimal
Page 511 and 512:
Gmoney • 51numeric list • 53pad
Page 513 and 514:
Namesapplication • 21dynamic •
Page 515 and 516:
ReadOps attributesettings • 243Re
Page 517 and 518:
concat function • 54functions •
Page 519:
event chains • 323event queue •
show all

Programming Guide - Actian

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?