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8.1.9 OData Service-Definition Examples The OData service definition describes how data exposed in an end point can be accessed by clients using the OData protocol. Each of the examples listed below is explained in a separate section. The examples show how to use the OData Service Definition Language (OSDL) in the OData service-definition file to generate an operational OData service that enables clients to use SAP HANA XS to access the OData end point you set up. ● Empty Service ● Namespace Definition ● Object Exposure ● Property Projection ● Key Specification ● Associations ● Aggregation ● Parameter Entity Sets OData Empty Service An OData service for SAP HANA XS is defined by a text file containing at least the following line: Service definition sample.odata:empty.xsodata service {} A service file with the minimal content generates an empty, completely operational OData service with an empty service catalog and an empty metadata file: http://localhost:8002/sample/odata/empty.xsodata http://localhost:8002/sample/odata/empty.xsodata/$metadata 188 P U B L I C © 2012 SAP AG. All rights reserved. SAP HANA Developer Guide Defining Web-based Data Access
An empty service metadata document consists of one Schema containing an empty EntityContainer. The name of the EntityContainer is the name of the .xsodata file, in this example "empty". OData Namespace Definition By default, as shown in the metadata file of an empty OData service, the namespace of the generated Schema is created by concatenating the package name of the .xsodata file with the file name, and separating the concatenated names with a dot. You can specify your own namespace by using the namespace keyword: Service definition sample.odata:namespace.xsodata service namespace "my.namespace" {} The resulting service metadata document has the specified schema namespace: http://localhost:8002/sample/odata/namespace.xsodata/$metadata OData Object Exposure There are two ways of exposing SAP HANA objects. You can either specify the repository design-time name or the database-object runtime name (with database schema). Although both variants are supported, the preferred method is the exposure via the repository design-time name. It has the advantage that the OData service is automatically updated, if the underlying repository object changes. The support for database objects is mainly intended for existing or replicated objects that do not have a related repository design-time object. In the examples provided to illustrate object exposure, the following definition of a table applies: SAP HANA Developer Guide Defining Web-based Data Access P U B L I C © 2012 SAP AG. All rights reserved. 189
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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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Page 159 and 160: ● CALL: Calls a procedure. For ex
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Page 165 and 166: The main aim of OData is to define
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Page 169 and 170: Entity Sets This construct allows y
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Page 173 and 174: $count This request allows you to r
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Page 179 and 180: ● Sample JSON Output: $top This o
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Page 183 and 184: 8.1.4 OData Security Considerations
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) content SHORTTEXT(100) Changes to
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● Preprocessing ● Preprocessed
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Name of Option Description In most
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Column ID Key Description Data Type
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a) Delete the existing full text in
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Parameter Data Type FUZZY_SEAR CH_I
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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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