Apple Inc.

Richard Frederick Wagner

Jeremy Matthew Werner

Patrick G Gates

Amol V Pattekar

Andrew M Wadycki

Derrick Huhn

Nicholas K Puz

Josh Flowers

Andrew H Vyrros

Olivier Bonnet

Kenneth Buffalo McNeil

Stephen Anderson Davis

James Callender

Jeffrey S Miller

Kevin R Lafferty

Onar Vikingstad

Dana J Dubois

Mitchell B Rivera

Paul A Seligman

John Andrew McCulloh

Eric Danforth Strahm

Jessica S Cheng

A method of generating a schema including receiving a data record having a record type name and one or more data values is provided. The data values are associated with data value names. The method includes determining whether a set of existing schemas includes a schema associated with the record type name, determining whether the schema includes an element having the same name as a corresponding data element of the record, and validating the corresponding data element against the schema element. A new schema element is added to the schema, the new schema element having the same name and type as the corresponding data element of the record. The method can further include indexing at least one of the one or more data values, which involves querying the indexed data, forming subscription lists for the data values, and forming a derived data value associated with one or more data values.

Methods and systems for record editing in application development

Techniques are disclosed for delivering push subscription notifications in large scale distributed systems. Subscription notifications can be delivered to mobile devices of subscribing users by monitoring, at a server, an application database comprising a data record having one or more data values, detecting, at the server, in accordance with the monitoring, a changed data value, querying a subscription database for a subscription having at least one constant value to be compared to the changed data value in accordance with a trigger condition specified in a trigger template, determining whether the trigger condition is true using the changed data value and the constant value as the values of the first and second variables, respectively, in the at least one comparison; and pushing a notification from the server in response to the trigger condition being true.

Push subscriptions

Disclosed herein is a technique for providing status feedback on the execution of a database request. The technique involves receiving a database request that defines an operation to be performed on at least one data record stored in a database. The data record is updated in the database in accordance with the operation, and one or more tasks that are to be performed in connection to the operation are scheduled for execution. A first version of a receipt is generated and provided to the application, and includes, for each of the one or more tasks, a status field that indicates a progress of executing the task. The method further includes the steps of, in response to a change in the execution of any of the one or more tasks, updating the status fields to produce a second version of the receipt, which is then provided to the application.

Method for issuing multipart receipts in connection to extensive database operations

Methods and arrangements for facilitating media playlist generation for a program participant based at least in part on media library inventory information provided by a number of program participants. The system or program in which the individuals are participating is an on-line media store. Those individuals that decide to be program participants are interested in organizing, maintaining and playing their music, based at least in part, on data derived from a population of other participants in the program that have similar or the same music in their libraries. To be a program participant, the individual music holder must send, and the on-line music store receive, data representative of that program participant's media inventory. This data typically contains identification data of the individual media items presently contained in that participant's media library regardless of the individual media item's source. The system or program determines an incidence of co-occurrence of pairs of individual media items in different program participants' media libraries. Based on this determination, a similarity rating is assigned between the pairs of individual media items based on the determined incidence of co-occurrence in the different program participants' media libraries.

System and method for playlist generation based on similarity data

System, method and computer program for facilitating media playlist generation based at least in part on media library inventory information provided by a plurality of program participants. Data is transmitted from a program participant's client device indicative of media inventory in a media library of the program participant. Media item similarity ratings are received at the client device that have been compiled based on cumulative data collected from a plurality of program participants, including identification data of individual media items contained in media libraries of the program participants regardless of each individual media item's source. Similarity ratings compilation includes processing the cumulative data to determine an incidence of co-occurrence of pairs of individual media items in different program participants' media libraries and making an assignment of a similarity rating based on the determined incidence of co-occurrence.

System, method and computer program that encompasses one or more client devices cooperating with a program host's on-line data processing center to generate media playlists. Data is transmitted from a program participant's client device to the processing center and is representative of media inventory in a media library on the client device and includes identification data of contained individual media items. Data is further received from a plurality of program participants representative of each respective program participant's media inventory, regardless of the source of the members of the inventory. Co-occurrence of pairs of individual media items in different program participants' media libraries is determined and a similarity rating is assigned between the pairs of individual media items based on the determined incidence of co-occurrence in the different program participants' media libraries. From this, a media playlist is generated.

Methods and arrangements for facilitating generation of media mixes for a program participant based at least in part on media library inventory information provided by a number of program participants. Those individuals that decide to be program participants are interested in organizing, maintaining and playing their music, based at least in part, on data derived from a population of other participants in the program. A program participant must send, and the system, receive, data representative of that program participant's media inventory. The system or program determines a relative similarity of each item from the collection of program participants as compared to each other item and from the similarity information clusters of similar items are identified. The clusters can be used to identify clusters of similar items in an individual program participant's media library and therefrom mixes of similar media items can be created.

Media item clustering based on similarity data

System, method and computer program that encompasses one or more client devices cooperating with a program host's on-line data processing center for making purchase recommendations of media items to a program participant. Accordingly, there is a transmission from a program host to a program participant of identification of at least one recommended-for-purchase media item selected based on the recommended-for-purchase media item being rated as similar to a designated media item presently contained in an inventory of a media library of the program participant. The rating of the recommended-for-purchase media item as being similar to the designated media item presently contained in the inventory of the media library of the program participant is representative of a frequency at which the recommended-for-purchase media item co-occurs with the designated media item in media libraries of others.

An apparatus, method, and machine-readable medium are described for managing data within a friend service. In one embodiment, a key/value data store can be used to provide an efficient and highly-scalable friend service database. Various techniques can be used to ensure data consistency between friend service data records. For example, in one embodiment, operations are detected which require updates to a plurality of related friend state records. A key may be generated to represent each of the operations and then used to create an entry in a write-ahead log database. In one embodiment, each entry in the write-ahead log database may specify the operation to be performed on the friend state records. If the plurality of friend state records are successfully updated, then the entry in the write-ahead log database may be deleted. However, if the plurality of friend state records are not successfully completed, then the entry is not deleted from the write-ahead log database. The friend state records associated with old entries in the write-ahead log database are checked for consistency and inconsistent records are repaired. In addition, optimistic locking techniques may be used in one embodiment to improve performance of the friend service database.

Growing community of inventors

San Francisco, CA, United States of America

Richard Frederick Wagner