Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for adaptive column selection. One of the methods includes obtaining a size of a display area. The method includes obtaining column descriptors, each column descriptor identifying a column and a column width. The method includes determining a set of columns to present, including comparing the column width of a column to an available size remaining, and including the column in the set in response to determining that the column size is less than the available size. The method includes calculating an aggregate width of all the columns in the set. The method includes allocating a portion of the size to each column in the set of columns based on a ratio of width of the respective column and the aggregate width. The method also includes presenting the columns in the set of columns on the display area.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a watermark-based message queue. One of the methods includes receiving a first connection request for messages associated with a user device. A first connection session is established with the user device. A message queue of messages associated with the user device is identified, each message in the message queue is associated with a respective timestamp, and the message queue is associated with a current watermark that identifies a first timestamp. An oldest message in the message queue at the time the first connection session was established is identified. An updated watermark that identifies a second timestamp associated with the oldest message is associated with the message queue. One or more messages that have a timestamp newer than or equal to the first timestamp identified by the current watermark is provided to the user device.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a row-level security. One of the methods includes receiving a request for one or more objects. The method includes determining that a type of the one or more requested objects is associated with an object representative of instance level security. The method includes determining access is authorized to at least some of the one or more objects. Determining access includes obtaining a first access statement associated with the type of the one or more objects, obtaining a second access statement associated with the object representative of instance level security, combining at least the first access statement and the second access statement into a third access statement, and obtaining one or more objects using the third access statement. The method also includes providing the authorized subset of objects to the user.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a watermark-based message queue. One of the methods includes receiving a first connection request for messages associated with a user device. A first connection session is established with the user device. A message queue of messages associated with the user device is identified, each message in the message queue is associated with a respective timestamp, and the message queue is associated with a current watermark that identifies a first timestamp. An oldest message in the message queue at the time the first connection session was established is identified. An updated watermark that identifies a second timestamp associated with the oldest message is associated with the message queue. One or more messages that have a timestamp newer than or equal to the first timestamp identified by the current watermark is provided to the user device.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a responsive user interface. One of the methods includes receiving a page for a user device, the page including a panels. The method includes receiving a layout for the page, the layout defining a visual relationship between the panels. The method includes generating, by a computer system, a slide including a subset of panels to display on the user device, the subset of panels selected based on characteristics of the user device and the layout. The method includes sending the slide to the user device.

Abstract: A method includes selecting a database on a system and selecting a style format on the system. The database contains data information for the web application, and the style format is applied to the web application. The method also includes selecting a validation rule for the web application, selecting a business rule for the web application, dynamically rendering the web application from a database to a web browser, and dynamically editing the web application. The web application incorporates the selected database and the selected style format instantaneously upon dynamic rendering.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a dynamic api, includes receiving a first message in a first format from a client, the first format being specified for the client, the first message including information sufficient to cause a target service to execute an operation. The method includes identifying, using the API message, the target service. The method includes determining based of the target, a second format. The method includes generating a second message in the second format prescribed by the target service using the first message, the second message including information sufficient to cause the target service to execute the operation. The method also includes sending the second message to the target service over the network connector.

Abstract: A method includes selecting a database on a system and selecting a style format on the system. The database contains data information for the web application, and the style format is applied to the web application. The method also includes selecting a validation rule for the web application, selecting a business rule for the web application, dynamically rendering the web application from a database to a web browser, and dynamically editing the web application. The web application incorporates the selected database and the selected style format instantaneously upon dynamic rendering.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a source independent query language. One of the methods includes receiving a first executable statement, the first executable statement referencing a second set of fields in a table in a relational database, the first executable statement having instructions to cause the database to perform operations on data in the table. The method includes generating a second executable statement based on the first set of fields and the first executable statement. The method includes determining a mapping between the first set of fields and the second set of fields. The method includes specifying a derived table using the corresponding values and the mapping. The method includes generating instructions to cause the database to perform the operations on the derived table. The method includes sending the second executable statement to the database.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a responsive user interface. One of the methods includes receiving a page, the page including panels, each panel having an equivalent predetermined size. The method includes receiving a layout for the page, the layout defining a predefined hierarchy of panel groups that defines a visual relationship between the panel groups. The method includes selecting panels to include in a slide based on characteristics of the user device and the panel groups. The method includes determining a scaled size for each panel in the selected panels based on a relative weighting of the panel groups. The method includes resizing a panel in the set of panels based on the scaled size. The method includes generating the slide using the set of panels including the resized panel. The method includes sending the slide to the user device.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a row level security. One of the methods includes receiving, by a computer device executing at least part of a functional logic tier of an application, a request from a user for one or more objects present in the functional logic tier. The method includes determining that a type of the requested objects is associated with an object representative of instance level security. The method includes in response to determining that the type is associated with the object, determining access is authorized to at least some of the objects, determining access comprising accessing, by a computer device executing at least part of a data tier of the application, a link data structure that links the user with at least some of the objects. The method also includes providing the at least some of the objects to the user.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a source independent query language. One of the methods includes receiving a first executable statement, the first executable statement referencing a second set of fields in a dataset, the first executable statement having instructions to cause the query processor to perform operations on data in the dataset. The method includes Generating a second executable statement based on the first set of fields and the first executable statement. The method includes determining a mapping between the first set of fields and the second set of fields. The method includes specifying a derived dataset using the corresponding values and the mapping. The method includes generating instructions to cause the query processor to perform the operations on the derived dataset. The method includes sending the second executable statement to the query processor.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a responsive user interface. One of the methods includes receiving a page for a user device, the page including a panels. The method includes receiving a layout for the page, the layout defining a visual relationship between the panels. The method includes generating, by a computer system, a slide including a subset of panels to display on the user device, the subset of panels selected based on characteristics of the user device and the layout. The method includes sending the slide to the user device.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a source independent query language. One of the methods includes receiving a first executable statement, the first executable statement referencing a second set of fields in a table in a relational database, the first executable statement having instructions to cause the database to perform operations on data in the table. The method includes generating a second executable statement based on the first set of fields and the first executable statement. The method includes determining a mapping between the first set of fields and the second set of fields. The method includes specifying a derived table using the corresponding values and the mapping. The method includes generating instructions to cause the database to perform the operations on the derived table. The method includes sending the second executable statement to the database.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a responsive user interface. One of the methods includes receiving a page, the page including panels, each panel having an equivalent predetermined size. The method includes receiving a layout for the page, the layout defining a predefined hierarchy of panel groups that defines a visual relationship between the panel groups. The method includes selecting panels to include in a slide based on characteristics of the user device and the panel groups. The method includes determining a scaled size for each panel in the selected panels based on a relative weighting of the panel groups. The method includes resizing a panel in the set of panels based on the scaled size. The method includes generating the slide using the set of panels including the resized panel. The method includes sending the slide to the user device.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for adaptive column selection. One of the methods includes obtaining a size of a display area. The method includes obtaining column descriptors, each column descriptor identifying a column and a column width. The method includes determining a set of columns to present, including comparing the column width of a column to an available size remaining, and including the column in the set in response to determining that the column size is less than the available size. The method includes calculating an aggregate width of all the columns in the set. The method includes allocating a portion of the size to each column in the set of columns based on a ratio of width of the respective column and the aggregate width. The method also includes presenting the columns in the set of columns on the display area.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a dynamic api, includes receiving a first message in a first format from a client, the first format being specified for the client, the first message including information sufficient to cause a target service to execute an operation. The method includes identifying, using the API message, the target service. The method includes determining based of the target, a second format. The method includes generating a second message in the second format prescribed by the target service using the first message, the second message including information sufficient to cause the target service to execute the operation. The method also includes sending the second message to the target service over the network connector.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a row level security. One of the methods includes receiving, by a computer device executing at least part of a functional logic tier of an application, a request from a user for one or more objects present in the functional logic tier. The method includes determining that a type of the requested objects is associated with an object representative of instance level security. The method includes in response to determining that the type is associated with the object, determining access is authorized to at least some of the objects, determining access comprising accessing, by a computer device executing at least part of a data tier of the application, a link data structure that links the user with at least some of the objects. The method also includes providing the at least some of the objects to the user.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a watermark-based message queue. One of the methods includes receiving a first connection request for messages associated with a user device. A first connection session is established with the user device. A message queue of messages associated with the user device is identified, each message in the message queue is associated with a respective timestamp, and the message queue is associated with a current watermark that identifies a first timestamp. An oldest message in the message queue at the time the first connection session was established is identified. An updated watermark that identifies a second timestamp associated with the oldest message is associated with the message queue. One or more messages that have a timestamp newer than or equal to the first timestamp identified by the current watermark is provided to the user device.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a row-level security. One of the methods includes receiving a request for one or more objects. The method includes determining that a type of the one or more requested objects is associated with an object representative of instance level security. The method includes determining access is authorized to at least some of the one or more objects. Determining access includes obtaining a first access statement associated with the type of the one or more objects, obtaining a second access statement associated with the object representative of instance level security, combining at least the first access statement and the second access statement into a third access statement, and obtaining one or more objects using the third access statement. The method also includes providing the authorized subset of objects to the user.