Package org.gcube.informationsystem.resourceregistry.persistence.orientdb.system

Class SystemRestoreManagement

java.lang.Object
org.gcube.informationsystem.resourceregistry.persistence.orientdb.system.SystemRestoreManagement
public class SystemRestoreManagement extends Object
OrientDB-specific System Restore writes: recreates a Resource or IsRelatedTo relation in an explicit "primary" Context with its original UUID and metadata preserved, then replays its remaining Context memberships verbatim (no avalanche propagation constraints, since the dump already captured the definitive per-instance membership set).

Every write sets ElementManagement.setPreservePassedMetadata(boolean): a restore is not a modification, so each restored instance keeps the metadata of the archive, whatever the number of Contexts it is replayed into.

Author:
Luca Frosini (ISTI - CNR)

  • Constructor Summary

    Constructors
    Constructor
    Description
    SystemRestoreManagement()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    addToContext(String type, UUID instanceUUID, UUID primaryContextUUID, UUID contextUUID)
    Replays the membership of an already-created instance into one additional Context, exactly as captured by the dump: no avalanche propagation constraints are evaluated, since the dumped per-instance Context set is already the definitive, historically-derived result of whatever propagation originally applied.
    void
    createQueryTemplate(String json)
    Creates a new Query Template, preserving the original UUID and metadata from the submitted JSON.
    void
    createRelation(String json, UUID primaryContextUUID)
    Creates a new IsRelatedTo relation directly in the given Context, preserving the original UUID and metadata from the submitted JSON.
    void
    createResource(String json, UUID primaryContextUUID)
    Creates a new Resource (with embedded ConsistsOf/Facets) directly in the given Context, preserving the original UUID and metadata from the submitted JSON.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • SystemRestoreManagement

      public SystemRestoreManagement()

  • Method Details

    • createResource

      public void createResource(String json, UUID primaryContextUUID) throws org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException
      Creates a new Resource (with embedded ConsistsOf/Facets) directly in the given Context, preserving the original UUID and metadata from the submitted JSON.
      Parameters:
      json - the Resource representation as produced by a System Dump
      primaryContextUUID - the Context in which the Resource is created
      Throws:
      org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException - if the creation fails

    • createRelation

      public void createRelation(String json, UUID primaryContextUUID) throws org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException
      Creates a new IsRelatedTo relation directly in the given Context, preserving the original UUID and metadata from the submitted JSON. Both source and target Resources must already exist in that Context.
      Parameters:
      json - the IsRelatedTo representation as produced by a System Dump
      primaryContextUUID - the Context in which the relation is created
      Throws:
      org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException - if the creation fails

    • createQueryTemplate

      public void createQueryTemplate(String json) throws org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException
      Creates a new Query Template, preserving the original UUID and metadata from the submitted JSON.
      Parameters:
      json - the Query Template representation as produced by a System Dump
      Throws:
      org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException - if the creation fails

    • addToContext

      public void addToContext(String type, UUID instanceUUID, UUID primaryContextUUID, UUID contextUUID) throws org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException
      Replays the membership of an already-created instance into one additional Context, exactly as captured by the dump: no avalanche propagation constraints are evaluated, since the dumped per-instance Context set is already the definitive, historically-derived result of whatever propagation originally applied. A Resource brings the ConsistsOf and Facet instances it was created with in its primary Context; an IsRelatedTo is added as the direct target of the operation, whatever its add constraint, and its Resources are already there. The metadata of every instance reached stay those of the archive.
      Parameters:
      type - the concrete Entity or Relation type name of the instance
      instanceUUID - the UUID of the instance to place
      primaryContextUUID - the Context the instance was created in
      contextUUID - the additional Context to add the instance to
      Throws:
      org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException - if the membership cannot be established