Abstract: An architecture that that extends conventional computer programming languages that compile into an instance of an extensible markup language (XML) document object model (DOM) to provide support for XML literals in the underlying programming language. This architecture facilitates a convenient short cut by replacing the complex explicit construction required by conventional systems to create an instance of a DOM with a concise XML literal for which conventional compilers can translate into the appropriate code. The architecture allows these XML literals to be embedded with expressions, statement blocks or namespaces to further enrich the power and versatility. In accordance therewith, context information describing the position and data types that an XML DOM can accept can be provided to the programmer via, for example, an integrated development environment.

Abstract: A Relational Schema Definition (RSD) language that uses metadata of the relational database to generate an implementation-neutral or implementation-specific format that represents the precise database structure and data. The RSD language is a declarative description language such that an RSD file can then be used offline in a disconnected environment to reconstruct and use the database.

Abstract: The subject disclosure pertains to computer programming languages and translation or conversion thereof. Rather than a complicated semantics preserving translation or conversion from a first source language to a second target language, the conversion can be one of syntax. The conversion can be accomplished, for example, via employment of a map that defines the relation between the syntax of the first language and the second language. The semantics of at least a part of the first language can be defined by the second target language. Thus, the first language can be open-ended and/or semantically extensible based on the second language.

Abstract: User assemblies can be created by a compiler that can handle more than one type definition during execution. Local copies are created for respective authoritative types in a code library, and the local copies are marked with a local type identifier. An authoritative type identifier (e.g., a globally unique identifier (GUID)) is copied from the authoritative type to the local type, and functions and properties associated with the local type are also copied from the authoritative type. Authoritative types are resolved for requested types when a local assembly references a local type from a compiled user assembly. The local type can be identified by a local type identifier, and an authoritative type can be retrieved from the code library that has a same authoritative type identifier as the requested type. A local copy of the retrieved authoritative type can be copied to the local assembly under compilation. The compiler can then emit user assemblies that comprise merely local types.

Abstract: Data is requested by an XML application conforming to the XML data model. The data is stored in an SQL database conforming to the relational data model. A mapping component transforms the XML query into an SQL query using a mapping component comprising instructions obtained from an instruction set defined by a mapping algebra. The transformed operation is used to retrieve the data. Once retrieved, the algebraically defined mapping component transforms the SQL data from data conforming to the relational data model to data conforming to the XML data for use in the XML application.

Abstract: Systems and methods that enhance expressibility in a programming language (e.g., Visual Basic) via relaxation of artificial restrictions and extension of delegates associated therewith, without changing the runtime infrastructure. A stub is employed that can replace an impermissible expression in the programming language, to leverage the existing permissible expressions.

Abstract: A data mapping architecture for mapping between two or more data sources without modifying the metadata or structure of the data sources themselves. Data mapping also supports updates. The architecture also supports at least the case where data sources that are being mapped, are given, their schemas predefined, and cannot be changed. The architecture includes a mapping component that receives respective metadata from at least two arbitrary data models, and maps expressions between the data models.

Abstract: The subject disclosure pertains to layering of a plurality of type systems. A development environment and language compilers can support multiple data models and their type systems in the same program. Elements of a program such as expressions can then be associated with several types from the multiple type systems. Compilers can employ the information provided by additional type systems to improve static type checking. Furthermore, the information can be bubbled up to a user in a plurality of forms including but not limited to intelligent assistance, auto-completion, tool tips, error information, and return types to enhance the program development experience.

Abstract: Systems and methods that enhance a programming language by introducing null unification on a type level in addition to a value level, for static types of both reference and value types T. An operator that adds a level of nullability (and removes such nullability) is introduced without a mention of the actual type, to steer overloading in a precise manner.

Abstract: The subject invention relates to systems and methods that augment node-based programming languages to facilitate efficient data manipulation of hierarchical data structures. In one aspect, a query or general purpose language system is provided. The system includes a query component to interact with hierarchical node-based data collections and a language extension component to augment the query component to facilitate interactions with the node-based data collections. The language extension component supplies various functions to filter the data collections at a granular level, re-shape the data collections, sort the data collections, or extend the data collections with computed nodes.

Abstract: Systems and methods that enhance expressibility in a programming language (e.g., Visual Basic) via relaxation of artificial restrictions and extension of delegates associated therewith, without changing the runtime infrastructure. A stub is employed that can replace an impermissible expression in the programming language, to leverage the existing permissible expressions.

Abstract: The subject invention pertains to a compilation system and meta-object protocol to facilitate interaction with objects of various types including but not limited to XML documents. More specifically, a delineator or dot operator can be extended to hide idiosyncratic details of interacting with objects. Code details can be generated by a compiler behind the scenes. This enables a programmer to achieve the same results while writing much simpler and intuitive code.

Abstract: The subject invention pertains to systems and methods for iterating over or otherwise traversing a collection of objects or elements. More specifically, mechanisms are provided for handling both conventional non-nested streams such as enumeratables as well as nested streams. Nested streams provide a more efficient mechanism for traversing certain objects such as recursive generators. One problem with nested streams is that they need to be flattened or simplified. Techniques are provided herein to allow such streams to be flattened quickly and efficiently. Moreover, systems and methods are disclosed to preserve backward compatibility of optimized nested stream processing with conventional non-nested streams.

Abstract: A batch compiler is employed to enable compilation of code provided at runtime. A managed application receives code during execution and invokes the compiler to transform the code to enable it to execute within the context of the receiving application. Among other things, employment of a batch compiler preserves investments made to such compilers while also opening up new scenarios in application scripting and/or hosting that are otherwise unavailable.

Abstract: Compiler functionality is componentized to enable use across different contexts. Conventionally tightly coupled functionality is decoupled and an interface afforded to facilitate interaction with compiler components/subcomponents in various scenarios. In one instance, compiler components can be employed across compile time and runtime. Compile time functionality can be employed at runtime and runtime functionality utilized at compile time thereby blurring the line between time dimensions.

Abstract: Expression tree versatility and applicability are enhanced to facilitate programming across various program languages and execution contexts. An expression tree can represent programmatic code as data in a representation common to multiple process mechanisms. As a result, entire programs or portions thereof can be captured and processed by a numerous common language components. Further, language specific concepts can be reduced to the common representation to enable language independent employment.

Abstract: Systems and methods that transform an input stream to an output stream by employing a hybrid of declarative features and procedural features. A transformation component includes a declaration component that identifies data types, which enables users to define customized event(s) whereupon user functions can be called, and a procedural component that executes the logic of the functions that are called to perform operations of the functions.

Abstract: White space is made visible in a code editor to facilitate identification thereof via color, symbols, characters and/or the like. Further, white space can be explicitly identified and distinctly presented of various types including significant, insignificant and editor introduced. White space information can also be employed to aid code compilation and/or processing.

Abstract: Reshaping of streams is provided to facilitate utilizing the streams without rapidly increasing memory requirements as the size of the stream increases. The streams can be pushed to alternative storage upon being reshaped, for example, such as to a persistent storage. If the streams lose structure, for example if a hierarchical stream is reshaped into a flat structure for storage in a database, structural information can be stored along with the streams and utilized to shape the stream to its original structure upon request for data, for example. Streams can be pulled from an exposing device or application, and portions of the stream can be transformed and stored according to a set of stop elements; the stop elements can be associated with functions that take action on the stream upon reaching a stop element, such as transforming and storing a portion thereof.

Abstract: Intelligent assistance functionality is provided in development environments and/or other editors for schematized data. Input of a trigger character sequence can initiate an intelligent assistance box having data corresponding to a related schema. Thus, the intelligent assistance data can be dynamic as schematized data can change; the data can be queried from the schema as requested to facilitate this end. In one embodiment, the data can be an extensible markup language (XML) schema having a plurality of elements. In this regard, syntax can be entered into a development environment to effectuate an intelligent assistance box comprising the elements of the schema; a root level element can be displayed for an initial trigger character sequence. After selecting the element, another trigger sequence can be input to facilitate querying the schema for next level elements, and so on.