Summary
Description of the profile
A policy represents some constraint or condition on the use, deployment or description of a resource as defined by a participant or, more generally, a stakeholder. A contract is a constraint that has the agreement of the constrained participants. A policy constraint is a measurable proposition that characterizes the constraint that the policy is about. A permission constraint governs the ability of a participant or other actor to perform an action or enter some specified state. An obligation constraint governs the requirement that a participant must perform some action or maintain some state.
Permissions or obligations may apply to any action that any actor may be able to perform.
The architectural implications of Policy and Contract are reflected in the set of capabilities provided by the Constrain functional profile.
Constrain models and data types.
Business Rules dynamic models.
OCL and other Model Constraint Languages
Constrain specializes capabilities architecturally implied by its associated concepts of Artifact , Change , Composition , Interaction , Interoperability , Metrics , Policy , PolicyAndContract , PolicyAndContractLanguage . The implied architectural capabilities are described in the following paragraphs.
Artifact An artifact is a managed resource within the Semantic Infrastructure.
An artifact is associated with the following capabilities:
- descriptions to enable the artifact to be visible, where the description includes a unique identifier for the artifact and a sufficient, and preferably a machine processible, representation of the meaning of terms used to describe the artifact, its functions, and its effects;
- one or more discovery mechanisms that enable searching for artifacts that best meet the search criteria specified by the service participant; where the discovery mechanism will have access to the individual artifact descriptions, possibly through some repository mechanism;
- accessible storage of artifacts and artifact descriptions, so service participants can access, examine, and use the artifacts as defined.
Change Artifact descriptions change over time and their contents will reflect changing needs and context.
Architectural implications of change on the Semantic Infrastructure are reflected in the following capabilities:
- mechanisms to support the storage, referencing, and access to normative definitions of one or more versioning schemes that may be applied to identify different aggregations of descriptive information, where the different schemes may be versions of a versioning scheme itself;
- configuration management mechanisms to capture the contents of the each aggregation and apply a unique identifier in a manner consistent with an identified versioning scheme;
- one or more mechanisms to support the storage, referencing, and access to conversion relationships between versioning schemes, and the mechanisms to carry out such conversions.
Composition Artifact Descriptions may capture very focused information subsets or can be an aggregate of numerous component descriptions. Service description is an example of a likely aggregate for which manual maintenance of all aspects would not be feasible.
Architectural implications of composition on the Semantic Infrastructure are reflected in the following capabilities:
- tools to facilitate identifying description elements that are to be aggregated to assemble the composite description;
- tools to facilitate identifying the sources of information to associate with the description elements;
- tools to collect the identified description elements and their associated sources into a standard, referenceable format that can support general access and understanding;
- tools to automatically update the composite description as the component sources change, and to consistently apply versioning schemes to identify the new description contents and the type and significance of change that occurred.
Interaction Descriptions of interactions are important for enabling auditability and repeatability, thereby establishing a context for results and support for understanding observed change in performance or results. Infrastructure services provide mechanisms to support service interaction.
Architectural implications of interactions on the Semantic Infrastructure are reflected in the following capabilities:
- one or more mechanisms to capture, describe, store, discover, and retrieve interaction logs, execution contexts, and the combined interaction descriptions;
- one or more mechanisms for attaching to any results the means to identify and retrieve the interaction description under which the results were generated.
- mediation services such as message and event brokers, providers, and/or buses that provide message translation/transformation, gateway capability, message persistence, reliable message delivery, and/or intelligent routing semantics;
- binding services that support translation and transformation of multiple application-level protocols to standard network transport protocols;
- auditing and logging services that provide a data store and mechanism to record information related to service interaction activity such as message traffic patterns, security violations, and service contract and policy violations
- security services that abstract techniques such as public key cryptography, secure networks, virus protection, etc., which provide protection against common security threats in a SOA ecosystem;
- monitoring services such as hardware and software mechanisms that both monitor the performance of systems that host services and network traffic during service interaction, and are capable of generating regular monitoring reports.
Interoperability Descriptions provide up-to-date information on what a resource is, the conditions for interacting with the resource, and the results of such interactions. As such, the description is the source of vital information in establishing willingness to interact with a resource, reachability to make interaction possible, and compliance with relevant conditions of use.
Architectural implications of interoperability on the Semantic Infrastructure are reflected in the following capabilities:
- one or more discovery mechanisms that enable searching for described resources that best meet the criteria specified by a service participant, where the discovery mechanism will have access to individual descriptions, possibly through some repository mechanism;
- tools to appropriately track users of the descriptions and notify them when a new version of the description is available.
Metrics Artifact Descriptions include references to metrics which describe the operational characteristics of the subjects being described
Architectural implications of metrics on the Semantic Infrastructure are reflected in the following capabilities:
- access to platform infrastructure monitoring and reporting capabilities
- access to metrics information generated or accessible by related services
- mechanisms to catalog and enable discovery of which metrics are available for a described artifact and information on how these metrics can be accessed;
- mechanisms to catalog and enable discovery of compliance records associated with policies, contracts, and constraints that are based on these metrics.
Policy Artifact Descriptions include references to policies defining conditions of use and optionally contracts representing agreement on policies and other conditions.
Architectural implications of policy on the Semantic Infrastructure are reflected in the following capabilities:
- descriptions to enable the policy modules to be visible, where the description includes a unique identifier for the policy and a sufficient, and preferably a machine processible, representation of the meaning of terms used to describe the policy, its functions, and its effects;
- one or more discovery mechanisms that enable searching for policies that best meet the search criteria specified by the service participant; where the discovery mechanism will have access to the individual policy descriptions, possibly through some repository mechanism;
- accessible storage of policies and policy descriptions, so service participants can access, examine, and use the policies as defined.
Policy capabilities are specialization of Artifact capabilities.
PolicyAndContract While policy and contract descriptions have much of the same architectural implications as Service Descriptions, mechanisms supporting policies and contracts also have the following architectural implications:
- decision procedures which must be able to measure and render decisions on constraints;
- enforcement of decisions;
- measurement and notification of obligation constraints;
- auditability of decisions, enforcement, and obligation measurements;
- administration of policy and contract language artifacts;
- storage of policies and contracts;
- distribution of policies/contracts;
- conflict resolution or elevation of conflicts in policy rules;
- delegation of policy authority to agents acting on behalf of a client;
- decision procedures capable of incorporating roles and/or attributes for rendered decisions.
PolicyAndContractLanguage While policy and contract descriptions have much of the same architectural implications as Service Descriptions, languages supporting policies and contracts also have the following architectural implications:
- expression of assertion and commitment policy constraints;
- expression of positive and negative policy constraints;
- expression of permission and obligation policy constraints;
- nesting of policy constraints allowing for abstractions and refinements of a policy constraint;
- definition of alternative policy constraints to allow for the selection of compatible policy constraints for a consumer and provider;
- composition of policies to combine one or more policies.
Capabilities
- assembly
- binding
- businessRuleModel
- complianceDiscovery
- componentAcquisition
- compositionArchive
- compositionChange
- configurationManagement
- discovery
- identity
- interactionLog
- interactionResults
- interoperabilityDiscovery
- logging
- mediation
- metadata
- metrics
- metricsDiscovery
- monitor
- monitoring
- oclModel
- policyAdministration
- policyAlternative
- policyAssertion
- policyAudit
- policyAuthorityDelegation
- policyComposition
- policyConflictResolution
- policyConstraint
- policyDecision
- policyDecisionProcedures
- policyDistribution
- policyEnforcement
- policyMetrics
- policyObligation
- policyRefinement
- policyStore
- provenance
- security
- serviceChangeNotification
- store
- transition
- versioning
Requirements traceability
Requirement |
Source |
Capability |
|---|---|---|
Adopt a common syntax and a structure for rules which utilize caDSR data elements as their facts and conclusions. Adoption of a shared syntax and structure by all members of the caBIG community will facilitate exchange of executable knowledge and diminish the need for extensive or resource intensive learning efforts on the part of adopters of such a system. |
Gap Analysis::Rules::114.1 - Common rule syntax and structure |
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Adopt a common model for rule structure. The proposed structure for rules can additionally be represented as a UML model which will allow the rules to be treated as objects. This has significance in caBIG as it will allow the rules to be accessed via an interface and this will also allow the different components of rules to be treated as data elements. |
Gap Analysis::Rules::114.2 - Common model for rule structure |
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Behavioral dynamic models capture the behavior of services. Behavior of services provides an unambiguous definition of the service constraints, capabilities, dependencies and interactions. The metadata and grammar required to realize service behavior is called behavioral semantics. Behavioral semantics provide a mechanism for better service discovery and enforcing the constraints at design and runtime. |
Semantic Infrastructure Requirements::Artifact Management::Behavioral Models |
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In a diverse information environment, semantics must be used to clearly indicate the meaning of data. This requirement is expected to be addressed by the Semantic Infrastructure, although there will be a touchpoint between the caGrid 2.0 and the Semantic Infrastructure to annotate data with semantics. Integration with the Semantic Infrastructure will enable reasoning, semantic query, data mediation (for example, ad hoc data transformation) and other powerful capabilities. Data semantics are captured in the Semantic Infrastructure and the platform will leverage the Semantic Infrastructure interfaces for reasoning and analysis. Link to use case satisfied from caGRID 2.0 Roadmap: The oncologist accesses the TCGA database to search for de-identified glioblastoma tumor data that is similar to the patient data exported from the hospital medical record. During this search, the semantics of the data fields are leveraged to indicate matches between TCGA data fields and the hospital medical record data fields. |
Semantic Infrastructure Requirements::caGRID 2.0 Platform and Terminology Integration::Data Semantics |
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Service Oriented Architecture is an architectural paradigm for organizing and utilizing distributed capabilities that may be under the control of different ownership domains. Consequently, it is important that organizations that plan to engage in service interactions adopt governance policies and procedures sufficient to ensure that there is standardization across both internal and external organizational boundaries to promote the effective creation and use of SOA-based services. SOA governance requires numerous architectural capabilities on the Semantic Infrastructure: Governance is expressed through policies and assumes multiple use of focused policy modules that can be employed across many common circumstances This is elaborated in the inherited Policy profile. Governance requires that the participants understand the intent of governance, the structures created to define and implement governance, and the processes to be followed to make governance operational. This is provided by capabilities specialized from the inherited Management Profile. Governance policies are made operational through rules and regulations. This is provided by the following capabilities, most of which are specializations of the inherited Artifact Profile: * descriptions to enable the rules and regulations to be visible, where the description includes a unique identifier and a sufficient, and preferably a machine process-able, representation of the meaning of terms used to describe the rules and regulations; * one or more discovery mechanisms that enable searching for rules and regulations that may apply to situations corresponding to the search criteria specified by the service participant; where the discovery mechanism will have access to the individual descriptions of rules and regulations, possibly through some repository mechanism; * accessible storage of rules and regulations and their respective descriptions, so service participants can understand and prepare for compliance, as defined. * SOA services to access automated implementations of the Governance Processes. Governance implies management to define and enforce rules and regulations.. This is elaborated in the inherited Management profile. Governance relies on metrics to define and measure compliance. This is elaborated in the inherited Metric profile. |
Semantic Profile::OASIS SOA::Governance Model |
monitor from inherited abstract profile Metricsmetrics from inherited abstract profile Metricsdiscovery from inherited abstract profile Artifactidentity from inherited abstract profile Artifactmetadata from inherited abstract profile Artifactstore from inherited abstract profile Artifact |
Interaction is the activity involved in using a service to access capability in order to achieve a particular desired real world effect, where real world effect is the actual result of using a service. An interaction can be characterized by a sequence of actions. Consequently, interacting with a service, i.e. performing actions against the service--usually mediated by a series of message exchanges--involves actions performed by the service. Different modes of interaction are possible such as modifying the shared state of a resource. Note that a participant (or agent acting on behalf of the participant) can be the sender of a message, the receiver of a message, or both. Interacting with Services has the following architectural implications on mechanisms that facilitate service interaction: A well-defined service Information Model, as elaborated in the inherited Information Model profile. A well-defined service Behavior Model, as elaborated in the inherited Behavior Model profile. Service composition mechanisms to support orchestration of service-oriented business processes and choreography of service-oriented business collaborations, as elaborated in the inherited Service Composition profile. Infrastructure services that provides mechanisms to support service interaction, as elaborated in the inherited Interaction profile. A layered and tiered service component architecture that supports multiple message exchange patterns (MEPs)l, as elaborated in the inherited Message Exchange profile. |
Semantic Profile::OASIS SOA::Interacting with Services Model |
interactionLog from inherited abstract profile InteractioninteractionResults from inherited abstract profile Interactionmediation from inherited abstract profile Interactionbinding from inherited abstract profile Interactionlogging from inherited abstract profile Interactionsecurity from inherited abstract profile Interactionmonitoring from inherited abstract profile Interaction |
Artifact Descriptions include references to policies defining conditions of use and optionally contracts representing agreement on policies and other conditions. Architectural implications of policy on the Semantic Infrastructure are reflected in the following capabilities: * descriptions to enable the policy modules to be visible, where the description includes a unique identifier for the policy and a sufficient, and preferably a machine processible, representation of the meaning of terms used to describe the policy, its functions, and its effects; * one or more discovery mechanisms that enable searching for policies that best meet the search criteria specified by the service participant; where the discovery mechanism will have access to the individual policy descriptions, possibly through some repository mechanism; * accessible storage of policies and policy descriptions, so service participants can access, examine, and use the policies as defined. Policy capabilities are specialization of Artifact capabilities. |
Semantic Profile::OASIS SOA::Policies and Contracts Model |
policyAssertion from inherited abstract profile PolicyAndContractLanguagepolicyObligation from inherited abstract profile PolicyAndContractLanguagepolicyConstraint from inherited abstract profile PolicyAndContractLanguagepolicyRefinement from inherited abstract profile PolicyAndContractLanguagepolicyAlternative from inherited abstract profile PolicyAndContractLanguagepolicyComposition from inherited abstract profile PolicyAndContractLanguagepolicyEnforcement from inherited abstract profile PolicyAndContractpolicyAdministration from inherited abstract profile PolicyAndContractpolicyAudit from inherited abstract profile PolicyAndContractpolicyStore from inherited abstract profile PolicyAndContractpolicyDecision from inherited abstract profile PolicyAndContractpolicyMetrics from inherited abstract profile PolicyAndContractpolicyDistribution from inherited abstract profile PolicyAndContractpolicyConflictResolution from inherited abstract profile PolicyAndContractpolicyAuthorityDelegation from inherited abstract profile PolicyAndContractpolicyDecisionProcedures from inherited abstract profile PolicyAndContract |
Policy and Rules Management allow non-developer secondary users to create policies and rules and apply them to services. The scope of policies includes, but is not limited to, definition and configuration of business processing policy and related rules, compliance policies, quality of service policies, and security policies. Some key functional requirements for managing policies include capabilities to author policies and store policies, and to approve and validate policies and execute policies at runtime. The Semantic Infrastructure will provide a mechanism to specify policies, including business processing policies and related rules, compliance policies, and quality of service policies. Tools and services for creating security specific policies will be provided by the caGRID 2.0 platform and will be used by the semantic infrastructure. All other policies specified in the Semantic Infrastructure will be enforced by the platform at runtime. Link to use case satisfied from caGRID 2.0 Roadmap: Each institution has different data sharing needs, access control needs, and business rules for processing that are defined and customized. For example, policy at the pathologist's institution may state that the patient is scheduled for a visit when the review is complete. |
Semantic Infrastructure Requirements::caGRID 2.0 Platform and Terminology Integration::Policy and Rules Management |
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A service description is an artifact, usually document-based, that defines or references the information needed to use, deploy, manage and otherwise control a service. This includes not only the information and behavior models associated with a service to define the service interface but also includes information needed to decide whether the service is appropriate for the current needs of the service consumer. Thus, the service description will also include information such as service reachability, service functionality, and the policies and contracts associated with a service. A service description artifact may be a single document or it may be an interlinked set of documents. Architectural implications of service description on the Semantic Infrastructure are reflected in the following functional decomposition: * Description will change over time and its contents will reflect changing needs and context. This is elaborated in the inherited Change profile. * Description makes use of defined semantics, where the semantics may be used for categorization or providing other property and value information for description classes. This is elaborated in the inherited Semantic Model profile. * Descriptions include reference to policies defining conditions of use and optionally contracts representing agreement on policies and other conditions. This is elaborated in the inherited Policy profile. * Descriptions include references to metrics which describe the operational characteristics of the subjects being described. This is elaborated in the inherited Metrics profile. * Descriptions of the interactions are important for enabling auditability and repeatability, thereby establishing a context for results and support for understanding observed change in performance or results. This is elaborated in the inherited Interaction profile. * Descriptions may capture very focused information subsets or can be an aggregate of numerous component descriptions. Service description is an example of a likely aggregate for which manual maintenance of all aspects would not be feasible. This is elaborated in the inherited Composition profile. * Descriptions provide up-to-date information on what a resource is, the conditions for interacting with the resource, and the results of such interactions. As such, the description is the source of vital information in establishing willingness to interact with a resource, reachability to make interaction possible, and compliance with relevant conditions of use. This is elaborated in the inherited Interoperability profile. Policy capabilities are specialization of Artifact capabilities. |
Semantic Profile::OASIS SOA::Service Description Model |
versioning from inherited abstract profile ChangeconfigurationManagement from inherited abstract profile Changetransition from inherited abstract profile Changediscovery from inherited abstract profile Artifactidentity from inherited abstract profile Artifactmetadata from inherited abstract profile Artifactstore from inherited abstract profile Artifactmonitor from inherited abstract profile Metricsmetrics from inherited abstract profile MetricsmetricsDiscovery from inherited abstract profile MetricscomplianceDiscovery from inherited abstract profile MetricsinteractionLog from inherited abstract profile InteractioninteractionResults from inherited abstract profile InteractioncompositionArchive from inherited abstract profile Compositionassembly from inherited abstract profile CompositioncompositionChange from inherited abstract profile CompositioncomponentAcquisition from inherited abstract profile CompositioninteroperabilityDiscovery from inherited abstract profile InteroperabilityserviceChangeNotification from inherited abstract profile Interoperability |
One of the key requirements for participants interacting with each other in the context of a SOA is achieving visibility: before services can interoperate, the participants have to be visible to each other using whatever means are appropriate. The Reference Model analyzes visibility in terms of awareness, willingness, and reachability. Visibility in a SOA ecosystem has the following architectural implications on mechanisms providing support for awareness, willingness, and reachability: Mechanisms providing support for awareness will likely have the following minimum capabilities: * creation of Description, preferably conforming to a standard Description format and structure; * publishing of Description directly to a consumer or through a third party mediator; * discovery of Description, preferably conforming to a standard for Description discovery; * notification of Description updates or notification of the addition of new and relevant Descriptions; * classification of Description elements according to standardized classification schemes. In a SOA ecosystem with complex social structures, awareness may be provided for specific communities of interest. The architectural mechanisms for providing awareness to communities of interest will require support for: * policies that allow dynamic formation of communities of interest; * trust that awareness can be provided for and only for specific communities of interest, the bases of which is typically built on keying and encryption technology. The architectural mechanisms for determining willingness to interact will require support for: * verification of identity and credentials of the provider and/or consumer; * access to and understanding of description; * inspection of functionality and capabilities; * inspection of policies and/or contracts. The architectural mechanisms for establishing reachability will require support for: * the location or address of an endpoint; * verification and use of a service interface by means of a communication protocol; * determination of presence with an endpoint which may only be determined at the point interaction but may be further aided by the use of a presence protocol for which the endpoints actively participate. |
Semantic Profile::OASIS SOA::Service Visibility Model |
discovery from inherited abstract profile Artifact |
Static models include a variety of models with different representations. |
Semantic Infrastructure Requirements::Artifact Management::Static Models |
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assembly
Description
Tools to facilitate identifying description elements that are to be aggregated to assemble the composite description.
Requirements addressed
Overview of possible operations
binding
Description
binding services that support translation and transformation of multiple application-level protocols to standard network transport protocols;
Requirements addressed
Overview of possible operations
businessRuleModel
Description
Business Rule Model maintenance
Requirements addressed
- Policy and Rules Management
- Behavioral Models
- 114.2 - Common model for rule structure
- 114.1 - Common rule syntax and structure
Overview of possible operations
complianceDiscovery
Description
Mechanisms to catalog and enable discovery of compliance records associated with policies, contracts, and constraints that are based on these metrics.
Requirements addressed
Overview of possible operations
componentAcquisition
Description
Tools to facilitate identifying the sources of information to associate with the description elements.
Requirements addressed
Overview of possible operations
compositionArchive
Description
Tools to collect the identified description elements and their associated sources into a standard, referenceable format that can support general access and understanding.
Requirements addressed
Overview of possible operations
compositionChange
Description
Tools to automatically update the composite description as the component sources change, and to consistently apply versioning schemes to identify the new description contents and the type and significance of change that occurred.
Requirements addressed
Overview of possible operations
configurationManagement
Description
Mechanisms to support the storage, referencing, and access to normative definitions of one or more versioning schemes that may be applied to identify different aggregations of descriptive information, where the different schemes may be versions of a versioning scheme itself.
Requirements addressed
Overview of possible operations
discovery
Description
One or more discovery mechanisms that enable searching for artifacts that best meet the search criteria specified by the service participant; where the discovery mechanism will have access to the individual artifact descriptions, possibly through some repository mechanism.
Requirements addressed
Overview of possible operations
identity
Description
Descriptions which include a unique identifier for the artifact.
Requirements addressed
Overview of possible operations
interactionLog
Description
One or more mechanisms to capture, describe, store, discover, and retrieve interaction logs, execution contexts, and the combined interaction descriptions.
Requirements addressed
Overview of possible operations
interactionResults
Description
One or more mechanisms for attaching to any results the means to identify and retrieve the interaction description under which the results were generated.
Requirements addressed
Overview of possible operations
interoperabilityDiscovery
Description
One or more discovery mechanisms that enable searching for described resources that best meet the criteria specified by a service participant, where the discovery mechanism will have access to individual descriptions, possibly through some repository mechanism.
Requirements addressed
Overview of possible operations
logging
Description
auditing and logging services that provide a data store and mechanism to record information related to service interaction activity such as message traffic patterns, security violations, and service contract and policy violations
Requirements addressed
Overview of possible operations
mediation
Description
mediation services such as message and event brokers, providers, and/or buses that provide message translation/transformation, gateway capability, message persistence, reliable message delivery, and/or intelligent routing semantics;
Requirements addressed
Overview of possible operations
metadata
Description
A representation of the meaning of terms used to describe the artifact, its functions, and its effects.
Requirements addressed
Overview of possible operations
metrics
Description
Access to metrics information generated or accessible by related services
Requirements addressed
Overview of possible operations
metricsDiscovery
Description
Mechanisms to catalog and enable discovery of which metrics are available for a described artifact and information on how these metrics can be accessed.
Requirements addressed
Overview of possible operations
monitor
Description
Access to platform infrastructure monitoring and reporting capabilities.
Requirements addressed
Overview of possible operations
monitoring
Description
monitoring services such as hardware and software mechanisms that both monitor the performance of systems that host services and network traffic during service interaction, and are capable of generating regular monitoring reports.
Requirements addressed
Overview of possible operations
oclModel
Description
OCL Model maintenance
Requirements addressed
Overview of possible operations
policyAdministration
Description
Administration of policy and contract language artifacts.
Requirements addressed
Overview of possible operations
policyAlternative
Description
Definition of alternative policy constraints to allow for the selection of compatible policy constraints for a consumer and provider.
Requirements addressed
Overview of possible operations
policyAssertion
Description
Expression of assertion and commitment policy constraints.
Requirements addressed
Overview of possible operations
policyAudit
Description
Auditability of decisions, enforcement, and obligation measurements.
Requirements addressed
Overview of possible operations
policyAuthorityDelegation
Description
Delegation of policy authority to agents acting on behalf of a client.
Requirements addressed
Overview of possible operations
policyComposition
Description
Composition of policies to combine one or more policies.
Requirements addressed
Overview of possible operations
policyConflictResolution
Description
Conflict resolution or elevation of conflicts in policy rules.
Requirements addressed
Overview of possible operations
policyConstraint
Description
Expression of positive and negative policy constraints.
Requirements addressed
Overview of possible operations
policyDecision
Description
Decision procedures which must be able to measure and render decisions on constraints.
Requirements addressed
Overview of possible operations
policyDecisionProcedures
Description
Decision procedures capable of incorporating roles and/or attributes for rendered decisions.
Requirements addressed
Overview of possible operations
policyDistribution
Description
Distribution of policies/contracts.
Requirements addressed
Overview of possible operations
policyEnforcement
Description
Enforcement of decisions.
Requirements addressed
Overview of possible operations
policyMetrics
Description
Measurement and notification of obligation constraints.
Requirements addressed
Overview of possible operations
policyObligation
Description
Expression of permission and obligation policy constraints.
Requirements addressed
Overview of possible operations
policyRefinement
Description
Nesting of policy constraints allowing for abstractions and refinements of a policy constraint.
Requirements addressed
Overview of possible operations
policyStore
Description
Storage of policies and contracts.
Requirements addressed
Overview of possible operations
provenance
Description
While the Resource identity provides the means to know which subject and subject description are being considered, Provenance as related to the Description class provides information that reflects on the quality or usability of the subject. Provenance specifically identifies the entity (human, defined role, organization, ...) that assumes responsibility for the resource being described and tracks historic information that establishes a context for understanding what the resource provides and how it has changed over time. Responsibilities may be directly assumed by the Stakeholder who owns a Resource or the Owner may designate Responsible Parties for the various aspects of maintaining the resource and provisioning it for use by others. There may be more than one entity identified under Responsible Parties; for example, one entity may be responsible for code maintenance while another is responsible for provisioning of the executable code. The historical aspects may also have multiple entries, such as when and how data was collected and when and how it was subsequently processed, and as with other elements of description, may provide links to other assets maintained by the Resource owner.
Requirements addressed
Overview of possible operations
security
Description
security services that abstract techniques such as public key cryptography, secure networks, virus protection, etc., which provide protection against common security threats in a SOA ecosystem;
Requirements addressed
Overview of possible operations
serviceChangeNotification
Description
Tools to appropriately track users of the descriptions and notify them when a new version of the description is available.
Requirements addressed
Overview of possible operations
store
Description
Accessible storage of artifacts and artifact descriptions, so service participants can access, examine, and use the artifacts as defined.
Requirements addressed
Overview of possible operations
transition
Description
One or more mechanisms to support the storage, referencing, and access to conversion relationships between versioning schemes, and the mechanisms to carry out such conversions.
Requirements addressed
Overview of possible operations
versioning
Description
Configuration management mechanisms to capture the contents of the each aggregation and apply a unique identifier in a manner consistent with an identified versioning scheme.
