Programming Guide - Actian

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Table FieldsFor example, the following statement changes the background color of thefourth cell in the name column of the custtable table:field(custtable[4].name).bgcolor = CC_LIGHT_BLUE;Because of the significant overhead entailed in their use, CellAttribute objectsare not automatically created when a table field is created. CellAttributes canbe turned on explicitly with the HasCellAttributes property. Or they are turnedon implicitly by changing a single cell's attribute. They can be freed up byturning off HasCellAttributes, but this resets all attributes back to theprotofield's default attributes.There are no CellAttribute objects for the cells of nested table fields.Table BodyThe table body represents the set of columns in the table field. To access thispart of a table field, use the TableField object's TableBody attribute. Thisattribute's data type is StackField. You can use this attribute to change visualproperties of the table body's line boundary and background. The syntax is:field(tablefield).TableBody.attribute = valueattributeSpecifies an attribute of the StackField object. For example, the followingstatement sets the width of the outline of the table:field(custtable).tablebody.outlinewidth = LW_THIN;The TableBody attribute is also useful in obtaining information about a tablefield (such as column names and data types) that is accessed at runtime butunknown at development time.For a discussion and example of finding which table field a field is in, and thenusing the TableBody attribute to iterate through the Child Fields, seeWhichTableField Method (see page 249).Control ButtonBy default, each table field has a control button that provides the user with amenu of operations that can be performed on the table field. This menuappears when the user clicks the control button.You can remove and add this menu. You can also change which operationsappear on the menu. For instructions about performing these tasks, see HowYou Can Remove or Add the Control Button (see page 241).234 <strong>Programming</strong> <strong>Guide</strong>
Table FieldsScroll BarThe scroll bar lets users scroll up or down in a table field display to bringundisplayed rows in the array into view. A scroll bar is present by default onevery table field when it is created.Summary of Table Field Access SyntaxTo scroll horizontally (in a vertical table field), you can put the table field into aview port. A vertical table field can also have its own horizontal scrollbar. If atable field has n columns, and you set the ColumnsDisplayed attribute to anumber less than n, only the leftmost columns are displayed. However, if youset the HasHorizontalScrollBar attribute to TRUE, a scrollbar is displayed at thebottom of the table field that lets the user scroll to see all columns.You can remove the scroll bar from the display or bring it back if it is notdisplayed. For more information, see How You Can Display and Remove theVertical Scroll Bar (see page 237).The following table provides a quick reference for the correct syntax to accesseach part of a table field:Table Field Component(Data Type)Table field (TableField)Reference Syntax and Examplefield(tablefield)Example:field(custtable)Title- Text (varchar(256))field(tablefield).titleExample:field(custtable).title = 'NewCustomers';- Visual characteristics(Free Trim)field(tablefield).TitleTrim.attributeExample:field(custtable).titletrim.bgcolor =CC_PALE_BLUE;Table header (StackField)field(tablefield).TableHeaderExample:field(custtable).tableheader.bgpattern= FP_SHADE;Column (ColumnField)field(tablefield[*].column)Working with Arrays, Table Fields, and Collections 235
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Ingres OpenROAD ® 2006Programming
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ContentsChapter 1: Introduction 13I
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Using an Object-oriented Approach t
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How You Can Retrieve Array Informat
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Chapter 12: Managing Event Queues 3
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Chapter 17: Preprocessing Your 4GL
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Chapter 1: IntroductionThis section
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ConventionsConventionsThe following
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Your Support OptionsYour Support Op
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OpenROAD NamesThe rules for these n
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OpenROAD Names3. Enclosing field sc
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OpenROAD NamesThe following code ex
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VariablesThe following illustrates
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VariablesIn the first example, film
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VariablesOpenROAD checks references
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VariablesHow You Can Declare Dynami
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VariablesFor example, assume that y
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ExpressionsHowever, you cannot use
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ExpressionsThe general syntax for h
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ExpressionsCurSessionSpecifies, for
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ExpressionsString OperatorThe conca
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ExpressionsOperatorlikenot likeOper
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Expressions• You can use the esca
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ExpressionsBecause procedures can r
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System-defined FunctionsThis rule h
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System-defined FunctionsNameOperand
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System-defined FunctionsName Operan
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System-defined FunctionsNameshift(c
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System-defined FunctionsSome date f
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System-defined FunctionsThe followi
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System-defined FunctionsCount Funct
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System-defined FunctionsResult Data
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Chapter 3: Writing Scripts and Proc
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ScriptsDeclare local variables that
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ScriptsUserEventSpecifies a user ev
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ScriptsExample—Field and Menu Ite
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ProceduresOpenROAD lets you create
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ProceduresReturning from a Procedur
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ProceduresExample—Local Procedure
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Procedures4GL DataTypedatemoneyfloa
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Calling Procedures• In this call
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Calling ProceduresparameterAssigns
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How Procedure Handles Work (ProcHan
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Compiler LimitationsYou can avoid t
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How You Can Invoke FramesHow the Cu
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How You Can Invoke FramesHow You Ca
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How You Can Invoke FramesFor more i
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How You Can Invoke FramesFor exampl
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How You Can Invoke FramesIf the obj
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How You Can Invoke FramesHow You Ca
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How You Can Invoke Frames• Prompt
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How You Can Invoke FramesThe syntax
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How You Can Run Non-interactive App
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How You Can Reference ObjectsHow Yo
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How You Can Reference ObjectsHow Yo
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How You Can Reference ObjectsUse an
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Using an Object-oriented Approach t
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InheritanceClass RelationshipsYou c
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InheritanceYou can specify a user c
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InheritanceThe Terminate method is
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How You Can Create a User ClassWhen
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How You Can Create a User ClassHow
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How You Can Create a User Class3. G
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How You Can Create a User ClassTo e
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External ClassesHow You Can Use Ext
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External ClassesExample—ActiveX C
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How You Can Manipulate Objects Gene
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Overview of the OpenROAD System Cla
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How You Can Access a Database with
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How You Can Manage TransactionsHow
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Page 228 and 229: Table FieldsTable Fields and Associ
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Page 254 and 255: CollectionsCollectionsA collection
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Page 258 and 259: Listview_Treeview_DemoImport the De
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How You Can Work with Images5. Add
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How You Can Work with Text StringsD
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How You Can Work with Text StringsH
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How You Can Call 3GL ProceduresIn t
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How You Can Use Exec 4GL Statements
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How You Can Link 3GL ProceduresHow
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Sample 3GL ProceduresExec 4GL and E
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How You Can Use Data Entry Error Ha
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Chapter 12: Managing Event QueuesTh
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Event-based ProgrammingThe followin
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Event-based ProgrammingEvent TypesT
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Event-based ProgrammingField Events
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Event-based ProgrammingBecause all
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Event-based ProgrammingThe followin
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Event-based ProgrammingThe resume s
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Event-based ProgrammingNote: The da
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Communicating Between OpenROAD Fram
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How You Can Communicate with an Ext
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How You Can Communicate Between Ope
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How You Can Communicate Between Ope
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Chapter 14: Creating Dynamic Frames
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How You Can Change Field and Frame
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How You Can Create and Modify Field
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How You Can Remove Fields Dynamical
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How You Can Declare a Composite Fie
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How You Can Manipulate Data in Dyna
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How You Can Manage Operations with
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How You Can Build a Frame Dynamical
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Dynamic Statements ConsiderationsDy
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How You Can Write an AssistantNote:
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How You Can Write an AssistantFirst
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How You Can Write an AssistantBecau
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How You Can Ensure Compatibility Be
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Chapter 17: Preprocessing Your 4GL
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PreprocessorGeneral Preprocessor St
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PreprocessorThe #define StatementTh
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Error ProcessingGuidelines for Usin
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Chapter 18: Debugging Your Applicat
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How You Can Test an ApplicationHow
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How You Can Use Break ConditionsTo
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How You Can Use Break Conditions3.
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How You Can Use Break ConditionsWay
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How You Can Use Break ConditionsSet
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How You Can Use Break Conditions•
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How You Can Use Break ConditionsMet
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How You Can Log Trace InformationDa
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How You Can Monitor a Running Appli
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How You Can Monitor a Running Appli
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How You Can Debug Database QueriesT
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How Debugging an Application WorksS
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How Debugging an Application WorksH
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How Debugging an Application WorksW
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How Debugging an Application WorksH
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How Debugging an Application WorksW
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How Debugging an Application WorksL
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How Debugging an Application WorksA
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Appendix A: SQL Syntax SummaryThis
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SQL Syntax Summarygrant all [privil
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OpenSQL Syntax SummaryOpenSQL Synta
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Operating System CommandsThe follow
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BitmapObject classThe BitmapObject
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external classAn external class def
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local variableLocal variables conta
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StringObject classThe StringObject
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Index'' ' (single quotation marks)c
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Attributesdefined • 28referencing
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using to copy data • 244using wit
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application threads • 444array di
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examining values • 473hexadecimal
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Gmoney • 51numeric list • 53pad
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Namesapplication • 21dynamic •
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ReadOps attributesettings • 243Re
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concat function • 54functions •
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event chains • 323event queue •
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