SQL Multiple Data Resource Configuration Document

SQL multiple data resource accessor configuration involves specifying information about the data service resources that can be contacted though the data service resource that is based on the SQL multiple data resource accessor implementation. For each one of the data service resources being contacted it includes the name of the data service resource, the URL of the data service that is is being exposed to, a description of the data service resource that it exposes, and the default and maximum timeouts. Configuration is done using a multiple data resource configuration document.

Data resource configuration documents are written by OGSA-DAI service deployers.

An SQL multiple data resource configuration document includes information on the following:

• The URL of each data service that each data service resource is exposed by.
• The name of each data service resource.
• The default timeout that the results should be returned within.
• The maximum timeout that the results should be returned within.
• A description about the relational data services resource being exposed by each data service resource.
• Information about the schema of the data resources wrapped by each data service resource.

For the remainder of this page we give an overview of the general format of the SQL multiple data resource configuration document used by a SQL multiple data resource accessor.

Example

<?xml version="1.0" encoding="UTF-8"?>
<multipleDataResourceConfig
  xmlns="https://ogsadai.org.uk/namespaces/2005/10/config"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="https://ogsadai.org.uk/namespaces/2005/10/config
  file:///C:/jakarta-tomcat-5.0.28/webapps/axis/schema/ogsadai/xsd/
  multiple_data_resource_config.xsd">

  <unitDataServiceConfig>
    <dataServiceURL>
      http://localhost:8080/axis/services/ogsadai/TestService
    </dataServiceURL>
    <dataResourceName>DataServiceResource</dataResourceName>
    <defaultTimeOut>120000</defaultTimeOut>
    <maximumTimeOut>600000</maximumTimeOut>
    <dataResourceDescription>From local DB</dataResourceDescription>
    <globalSchema></globalSchema>
  </unitDataServiceConfig>
  <unitDataServiceConfig>
    <dataServiceURL>
      http://localhost:8080/axis/services/ogsadai/TestService
    </dataServiceURL>
    <dataResourceName>ToKostasServiceResource</dataResourceName>
    <defaultTimeOut>120000</defaultTimeOut>
    <maximumTimeOut>600000</maximumTimeOut>
    <dataResourceDescription>From remote DB</dataResourceDescription>
    <globalSchema></globalSchema>
  </unitDataServiceConfig>
</multipleDataResourceConfig>

Specification

Element multipleDataResourceConfig:

• Element unitDataServiceConfig (one or more) - description of each of the contacted data service resources.
• • Element dataServiceURl (optional) - the URL of the data service that exposes a data service resource.
  • Element dataResourceName (optional) - the data service resource that wraps a relational data resource.
  • Element defaultTimeOut (optional) - the default timeout for the results from the data service resource to be returned.
  • Element maximumTimeOut (optional) - the maximum timeout for the results from the data service resource to be returned.
  • Element dataResourceDescription (optional) - description of the data service resource.
  • Element globalSchema (optional) - description of the relational data resource schema.

XML Schema

OGSA-DAI/schema/ogsadai/xsd/multiple_data_resource_config.xsd