Sample PROC MEANS Using SAS BI Web Services

Sample Overview

This sample shows how to write, define, and invoke a sample stored process that can be used with SAS BI Web Services. This example is for an XMLA Web service. You can access other sample Web services in the samples database at support.sas.com.

Write the Stored Process

The following SAS code is a sample stored process called stpwsmea.sas. This program is installed with SAS Integration Technologies; by default it is located in <SASHOME>\SASFoundation\9.3\inttech\sample.

%put &tablename

libname _WEBOUT xml xmlmeta = &_XMLSCHEMA;
libname instream xml;

proc means data=instream.&tablename
   output out=_WEBOUT.mean;
run;

libname _WEBOUT clear;
libname instream clear;

Define the Metadata

The stored process must be defined on a SAS Metadata Server that is used by SAS BI Web Services in order to determine how and where to run the stored process. Stored process metadata is defined by using SAS Management Console. The tables in this section show the values for each field in the New Stored Process wizard in SAS Management Console.

Note: If you have previously installed the SAS Stored Process sample metadata as part of the SAS Deployment Wizard or the Web Infrastructure Platform installation, then you might not need to re-create the metadata for the "Sample: MEANS Procedure Web Service" sample stored process. The sample metadata should already be available from the /Products/SAS Intelligence Platform/Samples folder. If you do not have the sample metadata, you can define the metadata for the stored process on your SAS Metadata Server by performing the following steps.

Open SAS Management Console and connect to the appropriate metadata server.
From the SAS Management Console navigation tree, select the folder under which you would like to create the new stored process. (If you would like to create a new folder, you can select the location in the navigation tree in which you want to add the new folder, and then select ActionsNewFolder from the menu bar to open the New Folder wizard. Follow the wizard instructions to create the new folder.)
After you select the folder in which you want to add a new stored process, select ActionsNewStored Process from the menu bar. The New Stored Process wizard displays.

On the first page of the New Stored Process wizard, enter the following values in their corresponding fields for the sample Web service:

Field Values for the New Stored Process Wizard

Field	Value
Name	Sample: MEANS Procedure Web Service
Keywords	XMLA Web Service

Note: To add the keyword, click Add to open the Add Keyword dialog box, and then enter the name of the keyword. Click OK. Adding a description and roles for the stored process are optional.

Click Next.

Enter the following values in their corresponding fields for the sample Web service:

Values for the Sample Web Service

Field	Value
Application server	SASApp
Server type	Stored process server only
Source code location and execution	Allow execution on selected application server only Store source code on application server
Source code repository	<SASHOME>\SASFoundation\9.3\inttech\sample
Source code file	stpwsmea.sas
Results	Stream

Click Next.

Click New Prompt to add an input parameter to the stored process.

On the General tab, enter the following values in their corresponding fields for the sample Web service:

Values for the Prompt

Field	Value
Name	tablename
Displayed text	tablename

Select the Requires a non-blank value check box. Entering a description is optional.

On the Prompt Type and Values tab, enter the following values in their corresponding fields for the sample Web service:

Values for the Prompt

Field	Value
Prompt type	Text
Method for populating prompt	User-entered value
Number of values	Single value
Text type	Single line
Default value	InData

Click Next.

Click New to open the New Data Source dialog box, where you must define the data source.

Enter the following values in their corresponding fields for the sample Web service:

Values for the New Data Source

Field	Value
Type	XML Data Source
Label	instream
Fileref	instream
Expected content type	text/xml

You must also select the Allow rewinding stream check box in the New Data Source dialog box. Otherwise, an XMLMap would need to be specified on the XML LIBNAME statement to define the XML schema for instream.
Click OK to save the data source definition.

Review your stored process information, and click Finish to define the metadata for the stored process.

Invoke the Stored Process

SOAP Request

The stored process that we just created can be invoked by SAS BI Web Services for Java middle-tier clients. A Web service client invokes the middle-tier Web service with an Execute() command. The SOAP request body, or client code, follows:

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" 
   xmlns:sas="urn:schemas-microsoft-com:xml-analysis">
   <soapenv:Header/>
   <soapenv:Body>
      <sas:Execute>
         <sas:Command>
            <StoredProcess name="/Products/SAS Intelligence Platform/Samples/
               Sample: MEANS Procedure Web Service">
               <Parameter name="tablename">InData</Parameter>
               <Stream name="instream">
                  <Table>
                     <InData>
                        <Column1>1</Column1>
                        <Column2>20</Column2>
                        <Column3>99</Column3>
                     </InData>
                     <InData>
                        <Column1>50</Column1>
                        <Column2>200</Column2>
                        <Column3>9999</Column3>
                     </InData>
                     <InData>
                        <Column1>100</Column1>
                        <Column2>2000</Column2>
                        <Column3>1000000</Column3>
                     </InData>
                  </Table>
               </Stream>
            </StoredProcess>
         </sas:Command>
         <sas:Properties>
            <PropertyList>
               <DataSourceInfo>Provider=SASSPS;</DataSourceInfo>
            </PropertyList>
         </sas:Properties>
      </sas:Execute>
   </soapenv:Body>
</soapenv:Envelope>

SOAP Response

After you run the client code, the resulting SOAP response body is as follows:

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
   <soapenv:Body>
      <n:ExecuteResponse xmlns:n="urn:schemas-microsoft-com:xml-analysis">
         <n:return>
            <TABLE>
               <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
                  <xs:element name="TABLE">
                     <xs:complexType>
                        <xs:sequence>
                           <xs:element ref="MEAN" minOccurs="0" maxOccurs="unbounded"/>
                        </xs:sequence>
                     </xs:complexType>
                  </xs:element>
                  <xs:element name="MEAN">
                     <xs:complexType>
                        <xs:sequence>
                           <xs:element name="_TYPE_" minOccurs="0" type="xs:double"/>
                           <xs:element name="_FREQ_" minOccurs="0" type="xs:double"/>
                           <xs:element name="_STAT_" minOccurs="0">
                              <xs:simpleType>
                                 <xs:restriction base="xs:string">
                                    <xs:maxLength value="8"/>
                                 </xs:restriction>
                              </xs:simpleType>
                           </xs:element>
                           <xs:element name="COLUMN3" minOccurs="0" type="xs:double"/>
                           <xs:element name="COLUMN2" minOccurs="0" type="xs:double"/>
                           <xs:element name="COLUMN1" minOccurs="0" type="xs:double"/>
                        </xs:sequence>
                     </xs:complexType>
                  </xs:element>
               </xs:schema>
               <MEAN>
                  <_TYPE_>0</_TYPE_>
                  <_FREQ_>3</_FREQ_>
                  <_STAT_>N</_STAT_>
                  <COLUMN3>3</COLUMN3>
                  <COLUMN2>3</COLUMN2>
                  <COLUMN1>3</COLUMN1>
               </MEAN>
               <MEAN>
                  <_TYPE_>0</_TYPE_>
                  <_FREQ_>3</_FREQ_>
                  <_STAT_>MIN</_STAT_>
                  <COLUMN3>99</COLUMN3>
                  <COLUMN2>20</COLUMN2>
                  <COLUMN1>1</COLUMN1>
               </MEAN>
               <MEAN>
                  <_TYPE_>0</_TYPE_>
                  <_FREQ_>3</_FREQ_>
                  <_STAT_>MAX</_STAT_>
                  <COLUMN3>1000000</COLUMN3>
                  <COLUMN2>2000</COLUMN2>
                  <COLUMN1>100</COLUMN1>
               </MEAN>
               <MEAN>
                  <_TYPE_>0</_TYPE_>
                  <_FREQ_>3</_FREQ_>
                  <_STAT_>MEAN</_STAT_>
                  <COLUMN3>336699.333</COLUMN3>
                  <COLUMN2>740</COLUMN2>
                  <COLUMN1>50.3333333</COLUMN1>
               </MEAN>
               <MEAN>
                  <_TYPE_>0</_TYPE_>
                  <_FREQ_>3</_FREQ_>
                  <_STAT_>STD</_STAT_>
                  <COLUMN3>574456.555</COLUMN3>
                  <COLUMN2>1094.89726</COLUMN2>
                  <COLUMN1>49.5008417</COLUMN1>
               </MEAN>
            </TABLE>
         </n:return>
      </n:ExecuteResponse>
   </soapenv:Body>
</soapenv:Envelope>