Abstract: Methods, systems, and computer-readable media are provided to allow multiple server resources to share a single connection to a client device. The single connection may be maintained between a notification queue on the server side and the client device. Multiple server resources share the notification queue. When a resource changes or a service wants to communicate information to a client, corresponding messages are sent to the notification queue over a connection within the data center. Once in the notification queue, the updates are communicated to the client device.

Abstract: Methods, systems, and computer storage media are provided for communicating with client devices by way of a proxy device. An indication is received that multiple client devices are attempting to communicate with a shared service over a wide area network, such as the Internet. A server provides a first client device with a list of other client devices that are currently in communications with the shared service. Once a proxy device has been selected, the server receives an identification of that proxy device from the first client device so that the server knows that future communications from the first client device will be received through the proxy device. Data is then communicated to and from the shared service by way of the proxy device.

Abstract: Methods, system, and computer storage media are provided for moderating actions performed on shared data objects. Rule enforcement logic is received for an application that is associated with one or more data objects shared between various clients. The rule enforcement logic is stored at a data server that also stores data associated with data objects. A moderator, also stored on the data server, is used to enforce the rule enforcement logic corresponding to the application when a client attempts to perform an action to a data object associated with the application.

Abstract: Methods, systems, and computer storage media are provided for communicating with client devices by way of a proxy device. An indication is received that multiple client devices are attempting to communicate with a shared service over a wide area network, such as the Internet. A server provides a first client device with a list of other client devices that are currently in communications with the shared service. Once a proxy device has been selected, the server receives an identification of that proxy device from the first client device so that the server knows that future communications from the first client device will be received through the proxy device. Data is then communicated to and from the shared service by way of the proxy device.

Abstract: Methods, systems, and computer-readable media are provided to allow multiple server resources to share a single connection to a client device. The single connection may be maintained between a notification queue on the server side and the client device. Multiple server resources share the notification queue. When a resource changes or a service wants to communicate information to a client, corresponding messages are sent to the notification queue over a connection within the data center. Once in the notification queue, the updates are communicated to the client device.

Abstract: Methods, systems, and computer-readable media are provided to allow multiple server resources to share a single connection to a client device. The single connection may be maintained between a notification queue on the server side and the client device. Multiple server resources share the notification queue. When a resource changes or a service wants to communicate information to a client, corresponding messages are sent to the notification queue over a connection within the data center. Once in the notification queue, the updates are communicated to the client device.

Abstract: Methods, systems, and computer-readable media for manipulating in-memory data entities are provided. Embodiments of the present invention use a Representational State Transfer (“REST”) web service to manipulate the in-memory data entities. In one embodiment, a “snap shot” is taken of the in-memory data entities at a point in time to create representations of the entities. A hierarchy of the representations is built. The hierarchy is used to make the entities addressable via a URI. Embodiments of the invention may then map the entity representations in the hierarchy to the entities. An embodiment of the invention uses handlers to process a REST style request addressed to an entity representation. The handler reads the command and determines whether the command is authorized for performance on the entity and performs that command, if appropriate.

Abstract: Methods, system, and computer storage media are provided for enabling cross-language object sharing by providing shareable typename information agreed upon by clients that wish to share object with each other. A first client creates an object by communicating a create request, which includes typename information associated with the object. The object is created and the typename information, along with data and properties associated with the object, is stored. A second client requests to open that object. The data, properties, and typename information stored in associated with the object is communicated to the second client so that the second client is able to create a correct instance of the object.

Abstract: Methods, systems, and computer-readable media for manipulating in-memory data entities are provided. Embodiments of the present invention use a Representational State Transfer (“REST”) web service to manipulate the in-memory data entities. In one embodiment, a “snap shot” is taken of the in-memory data entities at a point in time to create representations of the entities. A hierarchy of the representations is built. The hierarchy is used to make the entities addressable via a URI. Embodiments of the invention may then map the entity representations in the hierarchy to the entities. An embodiment of the invention uses handlers to process a REST style request addressed to an entity representation. The handler reads the command and determines whether the command is authorized for performance on the entity and performs that command, if appropriate.

Abstract: Methods, systems, and computer-readable media are provided to allow multiple server resources to share a single connection to a client device. The single connection may be maintained between a notification queue on the server side and the client device. Multiple server resources share the notification queue. When a resource changes or a service wants to communicate information to a client, corresponding messages are sent to the notification queue over a connection within the data center. Once in the notification queue, the updates are communicated to the client device.

Abstract: Methods, systems, and computer storage media are provided for communicating with client devices by way of a proxy device. An indication is received that multiple client devices are attempting to communicate with a shared service over a wide area network, such as the Internet. A server provides a first client device with a list of other client devices that are currently in communications with the shared service. Once a proxy device has been selected, the server receives an identification of that proxy device from the first client device so that the server knows that future communications from the first client device will be received through the proxy device. Data is then communicated to and from the shared service by way of the proxy device.

Abstract: Methods, system, and computer storage media are provided for moderating actions performed on shared data objects. Rule enforcement logic is received for an application that is associated with one or more data objects shared between various clients. The rule enforcement logic is stored at a data server that also stores data associated with data objects. A moderator, also stored on the data server, is used to enforce the rule enforcement logic corresponding to the application when a client attempts to perform an action to a data object associated with the application.

Abstract: Methods, system, and computer storage media are provided for enabling cross-language object sharing by providing shareable typename information agreed upon by clients that wish to share object with each other. A first client creates an object by communicating a create request, which includes typename information associated with the object. The object is created and the typename information, along with data and properties associated with the object, is stored. A second client requests to open that object. The data, properties, and typename information stored in associated with the object is communicated to the second client so that the second client is able to create a correct instance of the object.

Abstract: A storage manager represents XML-compliant documents as a collection of objects in memory, allowing the storage manager to manipulate the document, or parts of the document, with a consistent interface and to provide for features that are not available in conventional XML documents, such as element attributes with types other than text and documents that contain binary rather than text information. The XML-compliant document may be associated with a schema document which defines the arrangement of the document elements and attributes. The schema data associated with a document can contain a mapping between document elements and program code to be associated with each element. The storage manager further has methods for retrieving the code from the element tag. The retrieved code can then be invoked using attributes and content from the associated element and the element then acts like a conventional object.

Abstract: A storage manager represents XML-compliant documents as a collection of objects, each associated with an element of the XML document. The objects are created with a hierarchy that conforms to the hierarchy of elements in the XML document. Access to the document is then through methods of the objects exposed to application programs through a programming interface. The methods provide a consistent interface to documents regardless of how the data associated with the documents is stored in memory. Consequently, the underlying content of XML documents can be stored using a distributed virtual object system that provides a mechanism for multiple processes to access each object. As an example of the benefits of such a storage manager, the storage manager may be used to maintain a telespace, such as may store information shared by multiple users participating in a collaboration session.

Abstract: In a peer-to-peer collaboration system, deltas containing data change commands are organized in a persistent data structure called a delta log. The delta log is organized into blocks, which are the largest division in the delta log. In turn, blocks contain groups, groups contain chains and chains contain deltas. Delta blocks are used to implement priority deltas that are used to limit the collection of data change commands that must be transferred. Within a block the deltas are organized by groups, each of which is a set of deltas organized into chains. The delta group in used to determine which deltas to purge. The chains are ordered by increasing creator ID of the endpoint that created the chain. Organizing the delta log in this fashion allows the log to be “walked” to detect convergence problems. To achieve causality-preservation, each delta has a list of dependencies representing other deltas that must be executed before the current delta can be executed.

Abstract: An in-memory storage manager represents XML-compliant documents as a collection of objects in memory. The collection of objects allows the storage manager to manipulate the document, or parts of the document with a consistent interface and to provide for features that are not available in conventional XML documents, such as element attributes with types other than text and documents that contain binary rather than text information. In addition, in the storage manager, the XML-compliant document is associated with a schema document which defines the arrangement of the document elements and attributes. The schema data associated with a document can contain a mapping between document elements and program code to be associated with each element. The storage manager further has methods for retrieving the code from the element tag. The retrieved code can then be invoked using attributes and content from the associated element and the element then acts like a conventional object.

Abstract: An in-memory storage manager represents XML-compliant documents as a collection of objects in memory. The collection of objects allows the storage manager to manipulate the document, or parts of the document with a consistent interface and to provide for features that are not available in conventional XML documents, such as element attributes with types other than text and documents that contain binary rather than text information. In addition, in the storage manager, the XML-compliant document is associated with a schema document which defines the arrangement of the document elements and attributes. The schema data associated with a document can contain a mapping between document elements and program code to be associated with each element. The storage manager further has methods for retrieving the code from the element tag. The retrieved code can then be invoked using attributes and content from the associated element and the element then acts like a conventional object.