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Derived Aggregation The simplest way to define aggregations of columns in an object is to derive this information from metadata in the database. The only objects with this information are calculation views and analytic views. For all other object types, for example, tables and SQL views, the activation will not work. To cause the service to use derived information, you must specify the keywords aggregates always, as illustrated in the following example: service { "sample.odata:calc.calculationview" as "CalcView" keys generate local "ID" aggregates always; } Explicit Aggregation The example for the explicit aggregation is based on the following table definition: sample.odata:revenues.hdbtable table.schemaName = "ODATASAMPLES"; table.tableType = COLUMNSTORE; table.columns = [ {name = "Month"; sqlType = INTEGER; nullable = false;}, {name = "Year"; sqlType = INTEGER; nullable = false;}, {name = "Amount"; sqlType = INTEGER; nullable = true;} ]; table.primaryKey.pkcolumns = ["Month","Year"]; You can aggregate the columns of objects (without metadata) that are necessary for the derivation of aggregation by explicitly denoting the column names and the functions to use, as illustrated in the following example of a service definition: sample.odata:aggrexpl.xsodata service { "sample.odata:revenues.hdbtable" as "Revenues" keys generate local "ID" aggregates always (SUM of "Amount"); } The results of the entity set Revenues always contain the aggregated value of the column Amount. To extract the aggregated revenue amount per year, add $select=Year,Amount to your requested URI. OData Parameter Entity Sets SAP HANA calculation views and analytic views can interpret input parameters. For OData, these parameters can be entered by using a special parameter entity set. Parameter entity sets can be generated for both calculation views and analytic views by adding parameters via entity to the entity: service { "sample.odata:calc.calculationview" as "CalcView" keys generate local "ID" 200 P U B L I C © 2012 SAP AG. All rights reserved. SAP HANA Developer Guide Defining Web-based Data Access
} parameters via entity; During activation, the parameters specified in sample.odata:calc.calculationview are retrieved from the metadata of the calculation view and exposed as a new EntitySet named after the entity set name and the suffix Parameters, for example, CalcViewParameters. A NavigationProperty named Results is generated to retrieve the results from the parameterized call. The name of the generated parameter entity set and the navigation property can be customized, as illustrated in the following example: service { "sample.odata:calc.calculationview" as "CalcView" keys generate local "ID" parameters via entity "CVParams" results property "Execute"; } With the definition above, the name of the parameter entity set is CVParams, and the name of the NavigationProperty for the results is Execute. 8.2 Data Access with XMLA in SAP HANA XS In SAP HANA Extended Application Services, the persistence model (for example, tables, views and stored procedures) is mapped to the consumption model that is exposed to clients - the applications you write to extract data from the SAP HANA database. You can map the persistence and consumption models with XML for Analysis (XMLA). With XMLA, you write multi-dimensional -expressions (MDX) queries wrapped in an XMLA document. An XML for Analysis (XMLA) application running in SAP HANA application services is used to provide the consumption model for client applications exchanging MDX queries (wrapped in XMLA documents) with the SAP HANA database. XMLA uses Web-based services to enable platform-independent access to XMLA-compliant data sources for Online Analytical Processing (OLAP). XMLA enables the exchange of analytical data between a client application and a multi-dimensional data provider working over the Web, using a Simple Object Access Protocol (SOAP)based XML communication application-programming interface (API). Applications running in SAP HANA XS enable very accurate control of the flow of data between the presentational layer, for example, in the Browser, and the data-processing layer in SAP HANA itself, where the calculations are performed, for example in SQL or SqlScript. If you develop and deploy an XMLA service running in SAP HANA XS, you can take advantage of the embedded access to SAP HANA that SAP HANA XS provides; the embedded access greatly improves end-to-end performance. 8.2.1 XML for Analysis (XMLA) XML for Analysis (XMLA) uses Web-based services to enable platform-independent access to XMLA-compliant data sources for Online Analytical Processing (OLAP). XMLA enables the exchange of analytical data between a client application and a multi-dimensional data provider working over the Web, using a Simple Object Access Protocol (SOAP)-based XML communication applicationprogramming interface (API). Implementing XMLA in SAP HANA enables third-party reporting tools that are connected to the SAP HANA database to communicate directly with the MDX interface. The XMLA API provides universal data access to a SAP HANA Developer Guide Defining Web-based Data Access P U B L I C © 2012 SAP AG. All rights reserved. 201
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SAP HANA Appliance Software SPS 05
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4.3.1 SAP HANA Repository Packages
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6.5.12 Searching Tables, Models and
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12.2 Authentication Overview. .....
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2 SAP HANA SAP HANA is an in-memory
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With a scanning speed of several gi
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SAP HANA greatly extends the tradit
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2.4 Refactoring SAP HANA Based Appl
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In either case, as a developer you
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For this scenario, you may need to
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Object Description File Extension M
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Committing the file saves it in the
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● Security: Contains the roles an
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The view essentially is a list of r
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Action Description ● Creates a ne
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● Debug Session: The debug sessio
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○ MODELING ○ CONTENT_ADMIN 3.5.
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4.1 Setting up Delivery Units A del
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Related Links ○ In the text boxes
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4.2.2 Creating a Repository Workspa
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3. Open the Project Explorer view.
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1. Create a package Packages are ne
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● Non-Structural Package contains
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In the New Package dialog, enter in
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Maintaining Translation Details [pa
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Note: Exposed package content can i
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Application-Access File Keyword Opt
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Note: You can disable authenticatio
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| |---2011... |---subpackage1 | |--
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You use the mime_mapping keyword to
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1. If you have not already done so,
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2. Select Open Development. The def
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3. Select Next. 4. Enter a user nam
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In the SAP HANA Repositories view,
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Since you only have one workspace,
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6. Add a file called .xsaccess (no
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SAP HANA Developer Guide Setting Up
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5.1 Schema Relational databases con
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creation, but can have any number o
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If you want to define a transportab
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ool public(default=true); optional
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5.9.1 Table-Import Model The table-
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○ The key area of the input value
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{name = "Forename"; sqlType = VARCH
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var pstatement1 = conn.prepareState
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Note: The following example is for
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You can perform the following tasks
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Requirement Preference Substeps Not
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a) Log on to the Central Management
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4. In the Target System section, se
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Remember: Schema mapping only appli
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) Select the required granularity c
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● Hierarchies Note: In the Semant
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Restriction: It is not allowed to a
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Related Links ● When you open an
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○ Select the Data Foundation node
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a) In the Output panel of the Logic
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Related Links Note: If an active ve
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Note: Definer's right: If you want
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Optional Step: Creating Calculated
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4. Choose OK. Activate Note: 1. If
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a. To map the source to the target
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a. Enter a name and description. b.
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example, to calculate Discount for
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○ Name Path - the unique node ID
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specifying target currency and dese
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● In the Activate dialog, you can
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Note: You can also create a join be
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● You can choose to create parame
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● A decision table is based on in
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Objects in edit mode in other works
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shown. You can apply a filter for p
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Type Description Calculation View G
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3. From the context menu, choose Da
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Page 159 and 160: ● CALL: Calls a procedure. For ex
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Page 163 and 164: Invoker's right: If you want the sy
Page 165 and 166: The main aim of OData is to define
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Page 179 and 180: ● Sample JSON Output: $top This o
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Page 237 and 238: Synchronization [page 240] Full tex
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Page 247 and 248: a) Delete the existing full text in
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Parameter Data Type Default (TEXT)
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The CONTAINS predicate is optional
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Limitations The SNIPPET function ha
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Fuzzy search can be used in various
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Original Letter Standardized Letter
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Option similarCalculationMode The o
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Supported Data Types Fuzzy search w
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option2=value2')) ORDER BY score DE
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Name of Option Short Name maxDateDi
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TEXT and SHORTTEXT TEXT and SHORTTE
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2. Perform the search on two column
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Rule 2 - House Numbers or House Num
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col1 NVARCHAR(20) FUZZY SEARCH MODE
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2. Country codes are standardized t
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Postcode 1 Postcode 2 Score Remarks
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WHERE CONTAINS(postcode, '1234', FU
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PHRASE is similar to AND but restri
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Tokens=input')) ORDER BY score DESC
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)) ORDER BY score DESC, id; SCORE I
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Option textSearch The textSearch op
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Fuzzy Search with Stopwords Usage S
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Stopword Example CREATE COLUMN TABL
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Stopword ltd The stopwords will not
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Column Name Type Primary Key Descri
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Only one of these errors is allowed
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2000-01-11 -> 0.96 2000-01-12 -> 0.
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This deletes the node and all its c
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Hofmann -- specifies the input valu
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SCORE ID COMPANYNAME 0.88 6 xabc 0.
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advanced customizing and layout of
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Example: http://hana1.acme.corp:800
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Along with the full text index, you
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11.3.7 Defining the Page Layout Now
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switchbox Parameter Name Default Va
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11.3.9 Defining the Layout of Resul
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12.2 Authentication Overview Authen
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Secondly, roles created as design-t
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Caution: Theoretically, a user with
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Example: role :: { catalog schema "
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12.4 Privileges SAP HANA offers var
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Authorization to update or delete n
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● Activity ● Validity ● Attri
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The SAP HANA modeler automatically
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Runtime Authorization Check of Anal
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Implications of Creating Analytic P
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Now when a database user requests a
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If you create restrictions on colum
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12.4.6 Granting Privileges to Users
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The location of the application-des
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For example, you need to plan, mana
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13.4 Importing Delivery Units Impor
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4. Download translated text to the
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14 Using Database Client Interfaces
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1. In a command line, run the follo
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The port should be 315, for example
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The first column shows the field na
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3. In the Connection tab of the Dat
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SAP HANA supports the following Mic
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Function Description Avg Returns th
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Function Description MembersAscenda
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○ MEMBERS_AND_ASCENDANTS ○ MEMB
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15 SAP HANA Developer References Th
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