New (Record constructor): Difference between revisions
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<td>The optional class name in parentheses denotes a <var>[[Notation conventions for methods#Constructors|Constructor]]</var>. See [[#Usage notes|"Usage notes"]], below, for more information about invoking a <var> | <td>The optional class name in parentheses denotes a <var>[[Notation conventions for methods#Constructors|Constructor]]</var>. See [[#Usage notes|"Usage notes"]], below, for more information about invoking a <var>Record</var> <var>Constructor</var>. | ||
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Revision as of 01:32, 27 July 2011
Create a new Record object (Record class)
This shared function has one required parameter if in file context, two required parameters if in group context, and two optional parameters in either context. The parameters are applied by the New constructor to the newly instantiated object.
Syntax
%fileRecord = [%(Record In filOrGrp name):]New( number, [lockStrength], - [LoopLockStrength= lockStrength]) Throws RecordLockingConflict
%groupRecord = [%(Record In filOrGrp name):]New( number, string, - [lockStrength], - [LoopLockStrength= lockStrength]) Throws RecordLockingConflict
Syntax terms
%fileRecord | A declared Record object variable in file context. |
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%groupRecord | A declared Record object variable in group context. |
%(Record) | The optional class name in parentheses denotes a Constructor. See "Usage notes", below, for more information about invoking a Record Constructor. |
number | The number of the record to which the instantiated Record object will refer. |
string | For group context, the name of the file that contains the record that the instantiated Record object will reference. |
lockstrength | The value of a Lockstrength enumeration: None, Share, or Exclusive. These correspond to standard Model 204 record-locking levels, as described below. The default lock strength of the new record object is Share, matching the locking behavior of a User Language For Record Number statement.
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LoopLockStrength | The lock strength to be used for For Record loops on the Record object. This is an optional, name required, parameter, and it defaults to None. See "LoopLockStrength for Records". This parameter is available under Sirius Mods 7.0 and later. |
Usage notes
- As described in "Using New or other Constructors", New can be invoked with no object, with an explicit class name, or with an object variable in the class, even if that object is Null:
%rec = new(share) %rec = %(Record in file sirLocal):new(exclusive) %rec = %rec:new(none)
Note: As shown above, when explicitly indicating the class, both the class name and the file or group context must be specified just as they are on the Record variable's declaration.
- The LockStrength returns the locking level of a Record object.
- New is not the only way to instantiate a Record object. See "Instantiating Record objects".