An XML Query Language (Second Edition; Revised 7 September 2. Full Axis Feature. A conforming XQuery implementation that supports the Full. Axis Feature. MUST support all. Gregorian. In the operator mapping tables, the term Gregorian refers. Year. Month, xs: g. Year. xs: g. Month. This is a reference manual for the Go programming language. For more information and other documents, see golang.org. Go is a general-purpose language designed with. If Statement. The if statement in Java encloses a portion of code which is executed only if the applied condition is true. If statements only accept boolean. DEVELOPER: PL/SQL Practices On Conditional Compilation. By Steven Feuerstein. Apply best practices to PL/SQL conditional compilation. What is PL/SQL conditional. 5 Contents Chapter 1: Introduction Why use MIF. FUNDAMENTALS OF COMPUTER PROGRAMMING WITH C# (The Bulgarian C# Programming Book) Svetlin Nakov & Co. Dilyan Dimitrov Hristo Germanov Iliyan Murdanliev. Day, xs: g. Day, and. Month. Prolog. A Prolog is a series of declarations and imports that. Prolog. QName. Lexically, a QName consists of an optional namespace. If the namespace prefix is present, it is. Sequence. Type matching. During evaluation of an expression, it is sometimes necessary to. This process is known as Sequence. Type. matching. URIWithin this specification, the term URI refers to a. Universal Resource Identifier as defined in . This is a mapping of strings onto. The string represents the absolute URI of a. The sequence of nodes represents the result of the. URI is supplied as. Available documents. Chapter 3: Operators, Expressions, and Program Flow¶ The focus of this chapter is an in-depth look at each of the ways that we can evaluate code, and write.Last updated: 2011-4-27. Translations: Chinese . Download PDF. Part 4: Advanced Threading. Nonblocking Synchronization. We think the advantages of an internal DSL (based on a dynamic language) over XML are tremendous when used in build scripts. There are a couple of dynamic languages. ![]() ![]() ![]() This is a mapping of strings onto. The string represents the absolute URI of a. The document node is the root of a tree that represents. The document node is returned by. URI. axis step. An axis step returns a sequence of nodes that are. Such a step. has two parts: an axis, which defines the . This is an absolute URI, used when necessary in. URIs (for example, by the. URI declaration. A base URI declaration specifies the base URI property of the static context. The. base URI property is. URIs within a module. The value of the expression associated with a variable in a. Boundary whitespace is a sequence of consecutive. Direct. Constructor, or by an. Enclosed. Expr. For this. Cdata. Sections are not considered to. A boundary- space declaration sets the boundary- space policy in the. This component controls the. Boundary Whitespace. The built- in functions supported by XQuery are defined in. The construction mode governs the. If construction. mode is preserve, the type of a constructed element. Type, and all attribute and element. The. semantics of the constructor function call T($arg) are. T?). content expression. The final part of a computed constructor is an expression. The context item is the item currently being processed. This component defines the. When the context item is a node, it can also be referred to as. The context position is the position of the context item. The context size is the number of items in the sequence. A copy- namespaces declaration sets the value of copy- namespaces mode in the. This component controls the. Direct Element. Constructors. Its value consists of two parts. Time. Current date. Time. This information represents an. If invoked multiple times during the execution of. XQuery operates on the abstract, logical structure of an XML. This logical structure. This identifies one of the collations. URI (and types derived from them) when no. A default collation declaration sets the value of the. Default collection. This is the sequence of nodes that. Default element/type namespace. This is a namespace URI. The namespace URI, if present, is used for any. QName appearing in a position where an element or type. Default function namespace. This is a namespace URI or. The namespace URI, if present, is used for any unprefixed. QName appearing in a position where a function name is. Default order for empty sequences. This component. controls the processing of empty sequences and Na. N. values as ordering keys in an order by clause in a. FLWOR expression, as described in 3. Order By and Return. Clauses. delimiting terminal symbol. The delimiting terminal symbols are: S, . Numeric overflow is an example of a dynamic. The dynamic evaluation phase is the phase during which. A dynamic type is associated with each value as it is. The dynamic type of a value may be more specific than the. The effective boolean value of a value is defined as the. This. declaration controls the processing of empty sequences and. Na. N values as ordering keys in an order. FLWOR expression. A sequence containing zero items is called an empty. If present, a version declaration may optionally include an. The value of the string literal. Enc. Name. specified in . The purpose of an encoding. An expanded QName also retains its original. QName. into a string. The expression context for a given expression consists of. An extension expression is an expression whose semantics. External functions are functions that are implemented. A filter expression consists simply of a primary. The result of the filter expression. The first three components of the dynamic context (context item. A function f. 1depends on a variable. Function implementations. Each function in function. For a. function, the function implementation is an XQuery expression. This component defines the set of. Each function is uniquely identified by its expanded QName and. Ignorable whitespace consists of any whitespace characters that may. A. 2. 4. 2. Explicit Whitespace Handling). Implementation- dependent indicates an aspect that may. W3. C. specification, and is not required to be specified by the. Implementation- defined indicates an aspect that may. Implicit timezone. This is the timezone to be used when a. Time value that does not have a timezone is used. The implicit timezone is. Time. Duration. Each attribute. QName (for a top- level. Each element declaration. QName (for a top- level element. If the Schema. Import Feature is supported, in- scope element declarations. The in- scope namespaces property of an element node is a. URI, thus defining the set of namespace. QNames within the. For a given element, one namespace binding. URI of this namespace binding is the. In- scope schema definitions. This is a generic term for. In- scope schema types. Each schema type definition is. QName (for a named type). The in- scope schema. Predefined Schema Types. This is a set of (expanded QName. It defines the set of variables that are available for. The expanded QName is the name of the. If a variable declaration includes an expression, the expression. An item is either an atomic value or a node. An alternative form of a node test called a kind test can. A module that does not contain a Query Body is called a library module. A. library module consists of a module declaration followed by a. Prolog. literal. A literal is a direct syntactic representation of an. A main module consists of a Prolog followed by a Query Body. MAY means that an item is truly optional. A module is a fragment of XQuery code that conforms to. Module grammar and can. Expression. Processing. Each module is either a main module or a library module. A module declaration serves to identify a module as a library module. A. module declaration begins with the keyword module and. URILiteral. module directly depends. A module M1directly depends on another module. M2 (different from M1) if a variable or. M1depends on a variable or function. M2. module feature. A conforming XQuery implementation that supports the Module. Feature allows a query Prolog to contain a Module Import. A module import imports the function declarations and. MUST means that the item is an absolute requirement of. When an expression is used to specify the name of a constructed. A node test that consists only of a QName or a Wildcard is. A namespace declaration declares a namespace prefix and. URI, adding the (prefix, URI) pair. A namespace declaration attribute is used inside a direct. Its purpose is to bind a namespace prefix or. A value is namespace- sensitive if it includes an item. QName or xs: NOTATION or is. QName or. xs: NOTATION. A node is an instance of one of the node kinds. Each option consists of an. QName and a String. Literal. optional axis. The following axes are designated as optional axes. Ordering mode. Ordering mode, which has the value. FLWOR expressions that have no order. An ordering mode declaration sets the ordering mode in the. A path expression can be used to locate nodes within. A path expression consists of a series of one or more. Primary expressions are the basic primitives of the. They include literals, variable references, context item. A primary. expression may also be created by enclosing any expression in. Every axis has a principal node kind. If an axis can. contain elements, then the principal node kind is element. A query consists of one or more modules. The Query Body, if present, consists of an expression. The node ordering that is the reverse of document order is. A schema import imports the element declarations. For each user- defined atomic type in. The Schema Import Feature permits the query Prolog to. A schema type is a type that is (or could be) defined. The term sequence type suggests. XQuery value. which is always a sequence. Serialization is the process of converting an XDM instance into. DM4 in Figure 1.)serialization feature. A conforming XQuery implementation that supports the. Serialization Feature. MUST. provide means for serializing the result of a query, as specified. Serialization. setter. Setters are declarations that set the value of some. SHOULD means that there may exist valid reasons in. A sequence containing exactly one item is called a. Document order is stable, which means that the relative. The static analysis phase depends on the expression. The static analysis. The static context of an expression is the information. A static error is an error that must be detected during. A syntax error is an example of a. The static type of an expression is a type such that. A static typing extension is an implementation- defined type. This is a mapping from. The string represents the absolute URI of a. The type is the type of the. URI as its. argument. Statically known documents. This is a mapping from. The string represents the absolute URI of a. The type is the static type of a call to. URI as its literal argument. Statically known collations. This is an implementation- defined set of. URI, collation) pairs. It defines the names of the collations that. Statically known default collection type. This is the. type of the sequence of nodes that would result from calling the. Statically known namespaces. This is a set of (prefix. URI) pairs that define all the namespaces that are known during.
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