Package org.osid.configuration

package org.osid.configuration

The Open Service Interface Definitions for the org.osid.configuration service.

The Configuration OSID defines a set of interfaces for configuration retrieval and management. The Configuration service may be used to store user profiles or as a means to assist OSID implementors modularize configuration data.

Parameters

Configuration data is expressed through a set of Parameters and Values . A Parameter is an OsidRule with a unique Id and a syntax that indicates a primitive type. A Parameter may map to zero or more Values of the same syntax. An application requesting a configuration looks up Values given a Parameter Id through a ValueLookupSession .

As an OsidRule , Parameters may resolve to implicitly created Values based on external rule evaluations.

Values

Values represent primitive types that are assigned to Parameters and constrained by the syntax specified in its Parameter . In the most basic case, a single Value is created for a Parameter and returned when the Parameter is resolved. Parameters can have multiple Values where the Configuration OSID Consumer can request all Values , or a single Value selected by the OSID Provider. Values are Operable such that Values in multi-valued Parameter may be enabled or disabled manually or based on a rule. For example, the configuration of a service may change based on time of day or may change based on some out-of-band context. Value retrievals in the ValueRetrievalSession support passing of a ValueCondition to supply contextual information to feed the rule evaluation.

Configuration Cataloging

To create a configuration for an application, a Configuration object is created. The Configuration maps a set of Parameters and their Values . A Configuration may be positioned as a child of another Configuration to inherit its Parameters and Values . The desired Parameters are then mapped to the Configuration and Values assigned.

Parameters may be stored without values in separate Configurations for reuse or standardization.

OSID Provider implementations should get their configurations via the OsidRuntimeManager .

Sub Packages

The Configuration OSID includes a rules subpackage for governing the available Values for a Parameter based on a set of rules and an Configuration Batch OSID for managing parameters and values in bulk.

Example

Id colorParameterId = what I'm looking for;

ValueRetrievalSession valueSession = mgr.getValueRetrievalSession();
Value value = valueSession.getApplicableValueForParameter(colorParamId);
String color = value.getStringValue();        
 

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Related Packages

Package	Description
org.osid	The Open Service Interface Definitions for the org.osid service.
org.osid.configuration.batch	The Open Service Interface Definitions for the org.osid.configuration.batch service.
org.osid.configuration.records
org.osid.configuration.rules	The Open Service Interface Definitions for the org.osid.configuration.rules service.

Interfaces

Class	Description
Configuration	Configuration represents a configuration object.
ConfigurationAdminSession	This session creates, updates, and deletes Configuration .
ConfigurationForm	This is the form for creating and updating configurations.
ConfigurationHierarchyDesignSession	This session defines methods for managing a hierarchy of Configuration objects.
ConfigurationHierarchySession	This session defines methods for traversing a hierarchy of Configurations .
ConfigurationList	Like all OsidLists , ConfigurationList provides a means for accessing Configuration elements sequentially either one at a time or many at a time.
ConfigurationLookupSession	This session provides methods for retrieving Configurations .
ConfigurationManager	The configuration manager provides access sessions to retrieve and manage configurations.
ConfigurationNode	This interface is a container for a partial hierarchy retrieval.
ConfigurationNodeList	Like all OsidLists , ConfigurationNodeList provides a means for accessing ConfigurationNode elements sequentially either one at a time or many at a time.
ConfigurationNotificationSession	This session defines methods to receive notifications on adds/changes to Configurations .
ConfigurationProfile	The ConfigurationProfile describes the profile of the configuration service.
ConfigurationProxyManager	The configuration manager provides access to sessions to retrieve and manage configurations.
ConfigurationQuery	This is the query for searching configurations.
ConfigurationQueryInspector	This is the query inspector for examining configuration queries.
ConfigurationQuerySession	This session provides methods for searching among Configurations .
ConfigurationReceiver	The configuration receiver is the consumer supplied interface for receiving notifications pertaining to new, updated or deleted Configuration objects.
ConfigurationSearch	The search interface to query a configuration.
ConfigurationSearchOrder	An interface for specifying the ordering of search results.
ConfigurationSearchResults	This interface provides a means to capture results of a search.
ConfigurationSearchSession	This session provides methods for searching among Configurations .
Parameter	A parameter is used to map configuration values to an identifier and syntax.
ParameterAdminSession	This session creates, updates, and deletes Parameters .
ParameterConfigurationAssignmentSession	This session provides methods to re-assign Parameters to Configurations .
ParameterConfigurationSession	This session defines methods for accessing the configurations of a parameter.
ParameterForm	This is the form for creating and updating Parameters .
ParameterList	Like all OsidLists , ParameterList provides a means for accessing Parameter elements sequentially either one at a time or many at a time.
ParameterLookupSession	This session is used to retrieve parameters from a configuration registry of parameters.
ParameterNotificationSession	This session defines methods to receive notifications on adds/changes to Configurations and their properties.
ParameterQuery	The ParameterQuery is used to assemble search queries.
ParameterQueryInspector	Inspects a parameter query.
ParameterQuerySession	This session provides methods for searching Parameters .
ParameterReceiver	The parameter receiver is the consumer supplied interface for receiving notifications pertaining to new, updated or deleted Parameter objects.
ParameterSearch	ParameterSearch specifies the interface for specifying parameter search options.
ParameterSearchOrder	This interface specifies options for ordering search results.
ParameterSearchResults	This interface provides a means to capture results of a search.
ParameterSearchSession	This session provides methods for searching Parameters .
ParameterSmartConfigurationSession	This session manages queries and sequencing to create "smart" dynamic catalogs.
Value	This interface specifies the value of a configuration parameter.
ValueAdminSession	This session creates, updates, and deletes Values The data for create and update is provided by the consumer via the form object.
ValueCondition	A value condition interface.
ValueForm	This is the form for creating and updating Values .
ValueList	Like all OsidLists , ValueList provides a means for accessing Value elements sequentially either one at a time or many at a time.
ValueLookupSession	This session is used to retrieve configuration values.
ValueNotificationSession	This session defines methods to receive notifications on changes to Values .
ValueQuery	The interface to query a value.
ValueQueryInspector	The interface to inspect a value query.
ValueQuerySession	This session provides methods for searching Values .
ValueReceiver	The value receiver is the consumer supplied interface for receiving notifications pertaining to new, updated or deleted Values .
ValueRetrievalSession	This session is used to retrieve active and applicable configuration values through evaluation of active and pertinent values based on the context or conditional input.
ValueSearch	The interface for governing value searches.
ValueSearchOrder	This interface specifies options for ordering search results.
ValueSearchResults	This interface provides a means to capture results of a search.
ValueSearchSession	This session provides methods for searching Values .