Abstract: Systems, methods and apparatus operate to convert a markup language representation such as XML to a data structure format such as a tree containing representations of constructs in the markup language representation. The operations receive a markup language representation containing encoded items representative of markup language constructs and identifying a sequence of encoded items within the intermediate representation that represents a respective markup language construct. In response, the system establishes, within a buffer of nodes, a new node for the sequence of encoded items that represents a respective markup language construct and creates, from the buffer of nodes, a linked data structure that represents relationships between the markup language constructs represented within the markup language representation.

Abstract: Information represented in text-based markup languages, such as XML, is often a large, highly nested structure corresponding to complex patterns of metadata and/or data. Parsing such data streams via conventional software mechanisms rapidly exhibits degrading performance as the size, or volume, of data increases. Further, such do not perform dynamic modification to the output in response to feedback based on the data being parsed. An adaptive XML processing hardware apparatus processes an XML document in a manner suited to the invoking application, and processes the incoming XML into an optimal structure based on the type of data and a set of rules relating the type of the data to the output format. It also dynamically augments the output information stream based on the data, at the option of the invoking system.

Abstract: A representation of a markup language data such as XML expressed as a sequence of encoded items provides a data format including a type field containing i) a construct type identifying a type of markup language data construct to which the encoded item corresponds or, ii) a directive type identifying directive information concerning a processing characteristic associated with the sequence of encoded items. If the type field contains a construct type, the encoded item includes i) a length field containing a size of construct data associated with the markup language data construct to which the encoded item corresponds and ii) a value field identifying construct data associated with the markup language data construct to which the encoded item corresponds. For a directive type, the encoded item includes a directive value supplementing the directive information concerning a processing characteristic associated with the sequence of encoded items.

Abstract: A system assigns identities to received content portions by determining if the content portion has an assigned content identifier, and if so, applying the assigned content identifier to the content portion received. If the content portion does not have an assigned content identifier, the system selects an unassigned content identifier, from the set of unassigned content identifiers, for assignment to the content portion and assigns the unassigned content identifier to the content portion so that the unassigned content identifier becomes an assigned content identifier in a set of assigned content identifiers. The system associates a persistence metric to the assigned content identifier. The persistence metric indicates an importance of longevity of the assignment between the content portion and the content identifier. The system performs a recover operation to unassign content identifiers in the set of assigned content identifier based on a persistence metric of those assigned content identifiers.

Abstract: Systems, methods and apparatus provide a character process for processing markup language data, such as XML data, by receiving a character stream of markup language data and applying sequences of characters of the character stream to a set of state machines. The set of state machines includes a plurality of construct state machines responsible for processing respective markup language constructs identified by the sequences of characters. The character processor produces, from application of the sequences of characters to the set of state machines, an intermediate representation of the markup language constructs identified by the sequence of characters of the character stream of markup language data. The intermediate representation contains encoded items containing type, length, value representations representative of constructs within the character stream of markup language data.

Abstract: A method, apparatus and article of manufacture for discarding a data packet. The data packet is classified according to a type of service (TOS) indicator and modified with an internal service class (ISC) indicator according to the TOS indicator. The data packet is modified with a watermark (WM) indicator according to the availability of a system resource. The ISC, WM and a drop preference (DP) indicator of the data packet are compared to a committed information rate (CIR). The packet is discarded if the DP exceeds the CIR.

Abstract: A method, apparatus and article of manufacture for routing a data packet in a fault tolerant manner. A data packet is received from an incoming data channel and is transferred to a switching engine (SE) through an access processor engine (APE). A route for the data packet is generated using a central processor resource (CPR). The data packet is transferred from the SE to an outgoing trunk physical module (TP) using the route.

Abstract: A method, apparatus and article of manufacture for enabling flexible egress traffic queuing. A queue selection word is generated and a data queue is monitored for data. An output mask word is generated associating the data queue to an output channel and a priority value if the data queue contains data. The output channel is processed according to the queue selection word and the output mask word.

Abstract: The present invention provides a system and method to implement a packet switch buffer for unicast and multicast data. Incoming data packets are first stored in an input buffer memory. These data packets are examined to determine where in a primary output memory to place the data packets. The data packets are then transferred from the input buffer memory to the primary output memory. Afterward, the data packets are transferred from the primary output memory to a secondary output memory, and then from the secondary output memory to line card interface units (LCIUs).

Abstract: The present invention provides a system and method to implement a packet switch buffer. Incoming data packets are temporarily stored in an input buffer memory. Data packets in the input buffer memory are then examined to determine locations in an output buffer memory where the data packets should be transferred. Data packets in the input buffer memory are then transferred to the output buffer memory, such that data packets destined for a line card are written in an output memory block corresponding to the line card. Afterward, data packets in the output buffer memory are extracted and forwarded to designated output destinations.

Abstract: A method, apparatus and article of manufacture for prioritization of control plane traffic in a router. A destination slot is allocated in a sliding window buffer via a control channel. A data packet is received via a data channel. An acknowledgement that the data packet was received is sent via the control channel. The destination slot is released via the control channel.