## Saxon.Api

Class DocumentBuilder

Class DomDestination

Class DynamicContext

Class DynamicError

Class EmptyEnumerator

Class ExtensionFunctionCall

Class ExtensionFunctionDefinition

Class NullDestination

Class Processor

Class QName

Class SchemaManager

Class SchemaValidator

Class Serializer

Class StaticContext

Class StaticError

Class TextWriterDestination

Class XPathCompiler

Class XPathExecutable

Class XPathSelector

Class XQueryCompiler

Class XQueryEvaluator

Class XQueryExecutable

Class XdmAnyFunctionType

Class XdmAnyItemType

Class XdmAnyNodeType

Class XdmAtomicType

Class XdmAtomicValue

Class XdmDestination

Class XdmEmptySequence

Class XdmFunctionItem

Class XdmItem

Class XdmItemType

Class XdmNode

Class XdmNodeKind

Class XdmSequenceType

Class XdmValue

Class XmlDestination

Class XsltCompiler

Class XsltExecutable

Class XsltTransformer

Enum RecoveryPolicy

Enum SchemaValidationMode

Enum TreeModel

Enum WhitespacePolicy

Enum XdmAxis

Interface IMessageListener

Interface IQueryResolver

Interface IResultDocumentHandler

Interface IXdmEnumerator

Interface IXmlLocation

Interface SchemaResolver

## Saxon.Api
Class XsltCompiler

    public class XsltCompiler

implements object

  An `XsltCompiler` object allows XSLT 2.0 stylesheets to be compiled. The compiler holds information that represents the static context for the compilation.

  To construct an `XsltCompiler`, use the factory method `NewXsltCompiler` on the `Processor` object.

  An `XsltCompiler` may be used repeatedly to compile multiple queries. Any changes made to the `XsltCompiler` (that is, to the static context) do not affect queries that have already been compiled. An `XsltCompiler` may be used concurrently in multiple threads, but it should not then be modified once initialized.

Property Summary
`Uri` | `BaseUri` The base URI of the stylesheet, which forms part of the static context of the stylesheet. This is used for resolving any relative URIs appearing within the stylesheet, for example in `xsl:include` and `xsl:import` declarations, in schema locations defined to `xsl:import-schema`, or as an argument to the `document()` or `doc()` function.
`Processor` | `Processor` Get the Processor from which this XsltCompiler was constructed
`XmlResolver` | `XmlResolver` An `XmlResolver`, which will be used to resolve URI references while compiling a stylesheet
`bool` | `SchemaAware` The `SchemaAware` property determines whether the stylesheet is schema-aware. By default, a stylesheet is schema-aware if it contains one or more `xsl:import-schema` declarations. This option allows a stylesheet to be marked as schema-aware even if it does not contain such a declaration.
`string` | `XsltLanguageVersion` The `XsltLanguageVersion` property determines whether the version of the XSLT language specification implemented by the compiler. The values 2.0 and 3.0 refer to the XSLT 2.0 and XSLT 3.0 (formerly XSLT 2.1) specifications. The value 0.0 (which is the initial default) indicates that the value is to be taken from the `version` attribute of the `xsl:stylesheet` element.
`IList` | `ErrorList` List of errors. The caller should supply an empty list before calling Compile; the processor will then populate the list with error information obtained during the compilation. Each error will be included as an object of type StaticError. If no error list is supplied by the caller, error information will be written to the standard error stream.

Method Summary
`XsltExecutable` | `Compile(System.IO.Stream input)` Compile a stylesheet supplied as a Stream.
`XsltExecutable` | `Compile(System.IO.TextReader input)` Compile a stylesheet supplied as a TextReader.
`XsltExecutable` | `Compile(System.Uri uri)` Compile a stylesheet, retrieving the source using a URI.
`XsltExecutable` | `Compile(System.Xml.XmlReader reader)` Compile a stylesheet, delivered using an XmlReader.
`XsltExecutable` | `Compile(XdmNode node)` Compile a stylesheet, located at an XdmNode. This may be a document node whose child is an `xsl:stylesheet` or `xsl:transform` element, or it may be the `xsl:stylesheet` or `xsl:transform` element itself.
`XsltExecutable` | `CompileAssociatedStylesheet(XdmNode source)` Locate and compile a stylesheet identified by an <?xml-stylesheet?> processing instruction within a source document.

Property Detail

### BaseUri

    public Uri BaseUri {get; set; }

  The base URI of the stylesheet, which forms part of the static context of the stylesheet. This is used for resolving any relative URIs appearing within the stylesheet, for example in `xsl:include` and `xsl:import` declarations, in schema locations defined to `xsl:import-schema`, or as an argument to the `document()` or `doc()` function.

  This base URI is used only if the input supplied to the `Compile` method does not provide its own base URI. It is therefore used on the version of the method that supplies input from a `Stream`. On the version that supplies input from an `XmlReader`, this base URI is used only if the `XmlReader` does not have its own base URI.

### Processor

    public Processor Processor {get; set; }

  Get the Processor from which this XsltCompiler was constructed

### XmlResolver

    public XmlResolver XmlResolver {get; set; }

  An `XmlResolver`, which will be used to resolve URI references while compiling a stylesheet

  If no `XmlResolver` is set for the `XsltCompiler`, the `XmlResolver` is used that was set on the `Processor` at the time `NewXsltCompiler` was called.

### SchemaAware

    public bool SchemaAware {get; set; }

  The `SchemaAware` property determines whether the stylesheet is schema-aware. By default, a stylesheet is schema-aware if it contains one or more `xsl:import-schema` declarations. This option allows a stylesheet to be marked as schema-aware even if it does not contain such a declaration.

  If the stylesheet is not schema-aware, then schema-validated input documents will be rejected.

  The reason for this option is that it is expensive to generate code that can handle typed input documents when they will never arise in practice.

  The initial setting of this property is false, regardless of whether or not the `Processor` is schema-aware. Setting this property to true if the processor is not schema-aware will cause an Exception.

### XsltLanguageVersion

    public string XsltLanguageVersion {get; set; }

  The `XsltLanguageVersion` property determines whether the version of the XSLT language specification implemented by the compiler. The values 2.0 and 3.0 refer to the XSLT 2.0 and XSLT 3.0 (formerly XSLT 2.1) specifications. The value 0.0 (which is the initial default) indicates that the value is to be taken from the `version` attribute of the `xsl:stylesheet` element.

  Values that are not numerically equal to one of the above values are rejected.

  A warning is output (unless suppressed) when the XSLT language version supported by the processor is different from the value of the `version` attribute of the `xsl:stylesheet` element.

  XSLT 3.0 features are supported only in Saxon-PE and Saxon-EE. Setting the value to 3.0 under Saxon-HE will cause an error if (and only if) the stylesheet actually uses XSLT 3.0 constructs.

### ErrorList

    public IList ErrorList {get; set; }

  List of errors. The caller should supply an empty list before calling Compile; the processor will then populate the list with error information obtained during the compilation. Each error will be included as an object of type StaticError. If no error list is supplied by the caller, error information will be written to the standard error stream.

  By supplying a custom List with a user-written add() method, it is possible to intercept error conditions as they occur.

Method Detail

### Compile

    public XsltExecutable Compile(System.IO.Stream input)

  Compile a stylesheet supplied as a Stream.

  If the stylesheet contains any `xsl:include` or `xsl:import` declarations, then the `BaseURI` property must be set to allow these to be resolved.

  The stylesheet is contained in the part of the input stream between its current position and the end of the stream. It is the caller's responsibility to close the input stream after use. If the compilation succeeded, then on exit the stream will be exhausted; if compilation failed, the current position of the stream on exit is undefined.

  Parameters:
  `input` -
    A stream containing the source text of the stylesheet
  returns
    An `XsltExecutable` which represents the compiled stylesheet object. The XsltExecutable may be loaded as many times as required, in the same or a different thread. The `XsltExecutable` is not affected by any changes made to the `XsltCompiler` once it has been compiled.

### Compile

    public XsltExecutable Compile(System.IO.TextReader input)

  Compile a stylesheet supplied as a TextReader.

  If the stylesheet contains any `xsl:include` or `xsl:import` declarations, then the `BaseURI` property must be set to allow these to be resolved.

  The stylesheet is contained in the part of the input stream between its current position and the end of the stream. It is the caller's responsibility to close the `TextReader` after use. If the compilation succeeded, then on exit the stream will be exhausted; if compilation failed, the current position of the stream on exit is undefined.

  Parameters:
  `input` -
    A `TextReader` containing the source text of the stylesheet
  returns
    An `XsltExecutable` which represents the compiled stylesheet object. The XsltExecutable may be loaded as many times as required, in the same or a different thread. The `XsltExecutable` is not affected by any changes made to the `XsltCompiler` once it has been compiled.

### Compile

    public XsltExecutable Compile(System.Uri uri)

  Compile a stylesheet, retrieving the source using a URI.

  The document located via the URI is parsed using the `System.Xml` parser. This URI is used as the base URI of the stylesheet: the `BaseUri` property of the `Compiler` is ignored.

  Parameters:
  `uri` -
    The URI identifying the location where the stylesheet document can be found
  returns
    An `XsltExecutable` which represents the compiled stylesheet object. The XsltExecutable may be run as many times as required, in the same or a different thread. The `XsltExecutable` is not affected by any changes made to the `XsltCompiler` once it has been compiled.

### Compile

    public XsltExecutable Compile(System.Xml.XmlReader reader)

  Compile a stylesheet, delivered using an XmlReader.

  The `XmlReader` is responsible for parsing the document; this method builds a tree representation of the document (in an internal Saxon format) and compiles it. The `XmlReader` will be used as supplied; it is the caller's responsibility to ensure that the settings of the `XmlReader` are consistent with the requirements of the XSLT specification (for example, that entity references are expanded and whitespace is preserved).

  If the `XmlReader` has a `BaseUri` property, then that property determines the base URI of the stylesheet module, which is used when resolving any `xsl:include` or `xsl:import` declarations. If the `XmlReader` has no `BaseUri` property, then the `BaseUri` property of the `Compiler` is used instead. An `ArgumentNullException` is thrown if this property has not been supplied.

  Parameters:
  `reader` -
    The XmlReader (that is, the XML parser) used to supply the document containing the principal stylesheet module.
  returns
    An `XsltExecutable` which represents the compiled stylesheet object. The XsltExecutable may be run as many times as required, in the same or a different thread. The `XsltExecutable` is not affected by any changes made to the `XsltCompiler` once it has been compiled.

### Compile

    public XsltExecutable Compile(XdmNode node)

  Compile a stylesheet, located at an XdmNode. This may be a document node whose child is an `xsl:stylesheet` or `xsl:transform` element, or it may be the `xsl:stylesheet` or `xsl:transform` element itself.

  Parameters:
  `node` -
    The document node or the outermost element node of the document containing the principal stylesheet module.
  returns
    An `XsltExecutable` which represents the compiled stylesheet object. The XsltExecutable may be run as many times as required, in the same or a different thread. The `XsltExecutable` is not affected by any changes made to the `XsltCompiler` once it has been compiled.

### CompileAssociatedStylesheet

    public XsltExecutable CompileAssociatedStylesheet(XdmNode source)

  Locate and compile a stylesheet identified by an <?xml-stylesheet?> processing instruction within a source document.

  There are some limitations in the current implementation. The media type is ignored, as are the other parameters of the xml-stylesheet instruction. The href attribute must either reference an embedded stylesheet within the same document or a non-embedded external stylesheet.

  Parameters:
  `source` -
    The document node of the source document containing the xml-stylesheet processing instruction.
  returns
    An `XsltExecutable` which represents the compiled stylesheet object.