摘要:
A method, system and computer program product for retrieving data records to a client computer. An identifier of a base query is received from the client computer. The base query is configured to select a set of data records from a database that the client computer has permission to access. A modifying clause is also received from the client computer. The modifying clause comprises a directive restricting the set of data records to a subset of data records. The modifying clause may optionally comprise an expression for sorting. A combined query is generated from the base query and the modifying clause. The query is configured to return the subset of data records. The combined query is further configured to sort the subset of data records based on the value of the expression if the expression is present. The combined query is executed at the database.
摘要:
A method, system and computer program product for retrieving data records to a client computer. An identifier of a base query is received from the client computer. The base query is configured to select a set of data records from a database that the client computer has permission to access. A modifying clause is also received from the client computer. The modifying clause comprises a directive restricting the set of data records to a subset of data records. The modifying clause may optionally comprise an expression for sorting. A combined query is generated from the base query and the modifying clause. The query is configured to return the subset of data records. The combined query is further configured to sort the subset of data records based on the value of the expression if the expression is present. The combined query is executed at the database.
摘要:
A database manager, computer program product and methods for managing a database utilized by multiple applications. In one embodiment, the database manager performs a database record change to database records by a first application. The database manager branches the database records such that the database record change is visible to the first application and is not visible to one or more other applications accessing the database. The database manager can merge database record changes made by the other applications such that database schema changes made by the other applications are visible to the first application.
摘要:
A method and apparatus for constructing a software application with a plurality of screens. Operations performed in the method include representing a data model of the computer application as a relational model, providing a first screen of the computer application representing a current state of the data model, using relational algebra to define control logic of the computer application as a mapping from the current state of the data model and zero or more current application inputs to a new state of the data model and zero or more application outputs, using relational algebra to specify the selection of a second screen as a function of the current state of the data model and zero or more current application inputs, and generating computer executable code displaying the first screen and the second screen on a display.
摘要:
A method for dynamically deploying an application in a client-server environment includes evaluating at least one constraint of at least one of the application or the client-server environment and partitioning the placement and execution of components of the application in the client-server environment dynamically at runtime according to the at least one constraint.
摘要:
A method, system and computer program product for flexible service configuration. In one embodiment, the method includes receiving a procedure request to perform a procedure at a target server, detecting by the target server at least one deficient parameter in the procedure request, suspending processing of the procedure request, sending a request by the target server for additional information from a middleware system to correct the at least one deficient parameter in the procedure request, and resuming the procedure request upon receiving the additional information.
摘要:
A system, method and computer program product for synchronizing replicas of shared data structures associated with one or more computer systems. The method comprises: evaluating a metric for performing a replica synchronization operation on a first computer system according to a first synchronization method; evaluating the metric for performing a replica synchronization operation on the first computer system according to a second synchronization method; and, selecting, at synchronization time, based on the evaluated metric, whether to use the first or second synchronization methods, and communicating a command to a second computer system to replicate a shared data structure based on the selected synchronization method.
摘要:
A method for manipulating objects in isolation, in accordance with the invention, includes providing a shared object, B, from an object provider for use on a distributed object system. A new class of objects are provided which include a facade object, Bf, for B and a versionable representation object, Bv, for B wherein Bf supports a same interface as B. B is permitted to be manipulated in a given context isolated from other contexts for the object B wherein the object provider and an object user are unaware of the production and manipulation of the new class of objects. Method invocations on Bf in the given context are delegated to Bv to associate an instance of Bv with the given context such that one or more versions of object B are persistently maintained in the distributed object system.
摘要:
A method for dynamically deploying an application in a client-server environment includes evaluating at least one constraint of at least one of the application or the client-server environment and partitioning the placement and execution of components of the application in the client-server environment dynamically at runtime according to the at least one constraint.
摘要:
A database manager, computer program product and methods for managing a database utilized by multiple applications. In one embodiment, the database manager performs a database record change to database records by a first application. The database manager branches the database records such that the database record change is visible to the first application and is not visible to one or more other applications accessing the database. The database manager can merge database record changes made by the other applications such that database schema changes made by the other applications are visible to the first application.