Abstract: Embodiments include a method comprising providing a design interface that depicts a plurality of interface elements of an application under development, each element defined in source code accessible by the application development environment in a declarative markup language. The method can comprise receiving, through the design interface, data representing a selection of a plurality of the interface elements, identifying the declarative expressions corresponding to the selected interface elements, defining a new declarative expression, and generating at least one code segment using the identified declarative expressions. The method an comprise storing the generated code segment in a computer readable medium, with the stored code segment associated with the new declarative expression, so that the new declarative expression can be inserted into the source code in place of the identified declarative expressions and/or can used in a second application under development.

Abstract: Embodiments include a method comprising providing a design interface that depicts a plurality of interface elements of an application under development, each element defined in source code accessible by the application development environment in a declarative markup language. The method can comprise receiving, through the design interface, data representing a selection of a plurality of the interface elements, identifying the declarative expressions corresponding to the selected interface elements, defining a new declarative expression, and generating at least one code segment using the identified declarative expressions. The method an comprise storing the generated code segment in a computer readable medium, with the stored code segment associated with the new declarative expression, so that the new declarative expression can be inserted into the source code in place of the identified declarative expressions and/or can used in a second application under development.

Abstract: An application development tool can support sampling of data from one or more providers of data that will be queried by the application under development at runtime. The sampling results can be used to provide hints or suggestions at development time so that a developer defining code segments that make reference to data resulting from such queries can produce code segments having the proper context to reference the data of interest. The sampling results can comprise a plurality of parameters and the application development tool can provide a user interface whereby a user can indicate custom type declarations for the returned parameters and/or identify a subset of the parameters returned by a query as being of interest. The custom type declarations and/or identified subset can be used to facilitate more meaningful hinting or suggestion by the application development tool.