Class Reference
IRIS for UNIX 2019.2
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abstract class %Library.IProcedureContext extends %SQL.StatementResult

Base procedure context interface

Inventory

Parameters Properties Methods Queries Indices ForeignKeys Triggers
2 20


Summary

Properties
%CurrentResult %Message %OutputColumnCount %ROWCOUNT
%ROWID %ResultColumnCount %SQLCODE %StatementType
%StatementTypeName Error

Methods
%ClassIsLatestVersion %ClassName %ConstructClone %DispatchClassMethod
%DispatchGetModified %DispatchMethod %DispatchSetModified %DispatchSetMultidimProperty
%Display %DisplayFormatted %Extends %Get
%GetData %GetMetadata %GetParameter %IsA
%IsModified %MoreResults %New %Next
%NextOutputValue %NextResult %NormalizeObject %ObjectModified
%OriginalNamespace %PackageName %Print %SerializeObject
%SetModified %ValidateObject CloseCurrentResult NextResult

Subclasses
%Library.GTWResultSet %Library.JGWResultSet %Library.ProcedureContext

Properties

• property Error as %SYSTEM.Error;

Methods

• method %Display(pDelimiter As %String = $Char(9))
Display the contents of this object on the current device
• method %DisplayFormatted(pFormat As %String = -1, ByRef pFileName As %String(MAXLEN="")="", ByRef pMessages As %SQL.Manager.Messages = "", ByRef pFilesUsed As %String(MAXLEN="")=0, pTranslateTable As %String(MAXLEN="")="")

Display the contents of the %OutputValues() multidimentional property. If formatted display is available then format the results using the requested format and, if appropriate, open the formatted results using the host OS. The output is directed to one or more files and messages are placed in a result set object. All file names used are returned in an array.


Parameters


NameDescription
pFormat

The format applied to the result content. This parameter is also used to determine the file name extension.

Supported formats are:
-1%Display() format
0XML
1HTML
2PDF (requires a renderer such as FOP)
99TXT
100CSV

If pFormat is specified as any number not listed above then it will default to TXT.

pFormat can also be specified as XML, HTML, PDF, TXT or CSV.

NOTE: pFormat of CSV/100 is not a true comma separated value, but instead behaves the same as TXT, displaying each %OutputValues() on a numbered line.

pFileName

The base file name to be used to generate actual file names used for output. If no value is specified then a file name will be generated, using the TEMP folder defined for the InterSystems IRIS instance. This value is not expected to include an extension. An extension is added to this value to form the actual file used. Also, if nested results exist then a number is appended to the file name specified to produce a unique name for each result.

pMessages

Instance of a system result set class. If no value is passed then the system message result class is instantiated. This parameter is passed by reference. It is up to the caller to process the result set oref that is returned. pMessages.Count() returns the number of messages contained in the result set. pMessages.%Display() will display the messages on the current device. pMessages.%DisplayFormatted() is also implemented and can be used to display the messages using the selected format.

pFilesUsed

This pass-by-reference parameter will contain the number of files used to display the result content and the name of each file. pFilesUsed is the number of files and pFilesUsed(file_number) is the name of the file. The sequence of the files is the same sequence as the results are processed. For simple result objects, there is a single file. For context objects that can contain result set sequences, the results are output in the order they are returned and the files used are present in pFilesUsed in that same order.

pTranslateTable

This is the translate table used for the output files when the format is CSV or TXT. This parameter is optional.


• method %Get(pColumnName As %String = "") as %Library.String
Returns the value of the column with the name pColumnName in the current row of the result set.

If pColumnName is not a valid column name, this method returns an empty string.

• method %GetData(pColumnNumber As %Integer = 0) as %Library.String
Returns the value of column pColumnNumber in the current row of the result set.
• method %GetMetadata() as %SQL.StatementMetadata
Return the result set metadata as a %SQL.StatementMetadata instance.
• method %MoreResults() as %Integer
%MoreResults() will serially bind the next result set to the result object cursor (implemented as %Next()). If a result set was previously bound to the result object cursor (referred to as the "procedural cursor" by the SQL Standard) then it will be unbound and the reference to that result set removed. Under normal circumstances the previously bound result set is destructed.
• method %Next(ByRef pStatus As %Library.Status) as %Library.Integer
Advance the procedural result set cursor to the next row. Returns 0 if the cursor is at the end of the result set or if an error was encountered. Errors are reported in dynamic SQL using the %SQLCODE and %Message properties of the statement result. An optional argument will contain a %Status value on return. This %Status value indicates success or failure of the %Next call but it should be considered to be a secondary error reporting interface, %SQLCODE being the primary error reporting mechanism. This implementation can be overridden by classes that implement the procedural cursor interface.
• method %Print(pDelimiter As %String = " ") as %Status
Print the contents of the current row on the current device.
• method CloseCurrentResult() as %Status
Close the current resultset object, used to allow the cleanup code to run and the cursor to close
• method NextResult() as %RegisteredObject
Called to return the next resultset object. This also removes the reference to the existing object so it can cleanup and close itself


Copyright (c) 2019 by InterSystems Corporation. Cambridge, Massachusetts, U.S.A. All rights reserved. Confidential property of InterSystems Corporation.