Package net.sf.saxon.sxpath

Class AbstractStaticContext

java.lang.Object
net.sf.saxon.sxpath.AbstractStaticContext
All Implemented Interfaces:
StaticContext
Direct Known Subclasses:
IndependentContext, JAXPXPathStaticContext, UseWhenStaticContext
public abstract class AbstractStaticContext extends Object implements StaticContext
An abstract and configurable implementation of the StaticContext interface, which defines the static context of an XPath expression.

This class implements those parts of the functionality of a static context that tend to be common to most implementations: simple-valued properties such as base URI and default element namespace; availability of the standard function library; and support for collations.

  • Field Details

    • usingDefaultFunctionLibrary

      protected boolean usingDefaultFunctionLibrary

  • Constructor Details

    • AbstractStaticContext

      public AbstractStaticContext()

  • Method Details

    • setConfiguration

      protected void setConfiguration(Configuration config)
      Set the Configuration. This is protected so it can be used only by subclasses; the configuration will normally be set at construction time
      Parameters:
      config - the configuration

    • getConfiguration

      public Configuration getConfiguration()
      Get the system configuration
      Specified by:
      getConfiguration in interface StaticContext
      Returns:
      the Saxon configuration

    • setPackageData

      public void setPackageData(PackageData packageData)
      Set data about the unit of compilation (XQuery module, XSLT package)
      Parameters:
      packageData - the package data

    • getPackageData

      public PackageData getPackageData()
      Get data about the unit of compilation (XQuery module, XSLT package) to which this container belongs
      Specified by:
      getPackageData in interface StaticContext
      Returns:
      the package data

    • setSchemaAware

      public void setSchemaAware(boolean aware)
      Say whether this static context is schema-aware
      Parameters:
      aware - true if this static context is schema-aware

    • makeRetainedStaticContext

      public RetainedStaticContext makeRetainedStaticContext()
      Construct a RetainedStaticContext, which extracts information from this StaticContext to provide the subset of static context information that is potentially needed during expression evaluation
      Specified by:
      makeRetainedStaticContext in interface StaticContext
      Returns:
      a RetainedStaticContext object: either a newly created one, or one that is reused from a previous invocation.

    • setDefaultFunctionLibrary

      protected final void setDefaultFunctionLibrary()
      Initialize the default function library for XPath. This can be overridden using setFunctionLibrary().

    • setDefaultFunctionLibrary

      public final void setDefaultFunctionLibrary(int version)

    • addFunctionLibrary

      protected final void addFunctionLibrary(FunctionLibrary library)
      Add a function library to the list of function libraries
      Parameters:
      library - the function library to be added

    • getHostLanguage

      public int getHostLanguage()
      Get the host language (XSLT, XQuery, XPath) used to implement the code in this container
      Returns:
      the value Configuration.XPATH

    • makeEarlyEvaluationContext

      public XPathContext makeEarlyEvaluationContext()
      Construct a dynamic context for early evaluation of constant subexpressions
      Specified by:
      makeEarlyEvaluationContext in interface StaticContext
      Returns:
      a newly constructed dynamic context

    • getContainingLocation

      public Location getContainingLocation()
      Description copied from interface: StaticContext
      Get the containing location. This is location information relevant to an expression or query as a whole. In the case of an XPath expression held in a node of an XML document, it will provide the location of that node. In the case of a query held in a file, it contains the location of the file (in its systemId property). The method does NOT provide fine-grained location information for each contained subexpression. The location that is returned should be immutable for the duration of parsing of an XPath expression or query.
      Specified by:
      getContainingLocation in interface StaticContext
      Returns:
      the containing location

    • setContainingLocation

      public void setContainingLocation(Location location)
      Set the containing location, which represents the location of the outermost expression using this static context (typically, subexpressions will have a nested location that refers to this outer containing location)
      Parameters:
      location - the location map to be used

    • setBaseURI

      public void setBaseURI(String baseURI)
      Set the base URI in the static context
      Parameters:
      baseURI - the base URI of the expression; the value null is allowed to indicate that the base URI is not available.

    • getStaticBaseURI

      public String getStaticBaseURI()
      Get the Base URI, for resolving any relative URI's used in the expression. Used by the document() function, resolve-uri(), etc.
      Specified by:
      getStaticBaseURI in interface StaticContext
      Returns:
      "" if no base URI has been set

    • getFunctionLibrary

      public FunctionLibrary getFunctionLibrary()
      Get the function library containing all the in-scope functions available in this static context. This method is called by the XPath parser when binding a function call in the XPath expression to an implementation of the function.
      Specified by:
      getFunctionLibrary in interface StaticContext
      Returns:
      the function library

    • setFunctionLibrary

      public void setFunctionLibrary(FunctionLibraryList lib)
      Set the function library to be used
      Parameters:
      lib - the function library

    • declareCollation

      public void declareCollation(String name, StringCollator comparator, boolean isDefault)
      Deprecated.
      since 9.6. All collations are now registered at the level of the Configuration. If this method is called, the effect is (a) the supplied collation is registered with the configuration, and (b) if isDefault=true, the collation becomes the default collation for this static context
      Declare a named collation
      Parameters:
      name - The name of the collation (technically, a URI)
      comparator - The StringCollator used to implement the collating sequence
      isDefault - True if this is to be used as the default collation

    • setDefaultCollationName

      public void setDefaultCollationName(String collationName)
      Set the name of the default collation for this static context.
      Parameters:
      collationName - the name of the default collation

    • getDefaultCollationName

      public String getDefaultCollationName()
      Get the name of the default collation.
      Specified by:
      getDefaultCollationName in interface StaticContext
      Returns:
      the name of the default collation; or the name of the codepoint collation if no default collation has been defined

    • issueWarning

      public void issueWarning(String s, Location locator)
      Issue a compile-time warning. This method is used during XPath expression compilation to output warning conditions. The default implementation writes the message to the error listener registered with the Configuration.
      Specified by:
      issueWarning in interface StaticContext
      Parameters:
      s - The warning message. This should not contain any prefix such as "Warning".
      locator - the location of the construct in question. May be null.

    • getSystemId

      public String getSystemId()
      Get the system ID of the container of the expression. Used to construct error messages.
      Specified by:
      getSystemId in interface StaticContext
      Returns:
      "" always

    • getDefaultElementNamespace

      public String getDefaultElementNamespace()
      Get the default namespace URI for elements and types Return NamespaceConstant.NULL (that is, the zero-length string) for the non-namespace
      Specified by:
      getDefaultElementNamespace in interface StaticContext
      Returns:
      the default namespace for elements and type

    • setDefaultElementNamespace

      public void setDefaultElementNamespace(String uri)
      Set the default namespace for elements and types
      Parameters:
      uri - the namespace to be used for unprefixed element and type names. The value "" (or NamespaceConstant.NULL) represents the non-namespace

    • setDefaultFunctionNamespace

      public void setDefaultFunctionNamespace(String uri)
      Set the default function namespace
      Parameters:
      uri - the namespace to be used for unprefixed function names. The value "" (or NamespaceConstant.NULL) represents the non-namespace

    • getDefaultFunctionNamespace

      public String getDefaultFunctionNamespace()
      Get the default function namespace. The value "" (or NamespaceConstant.NULL) represents the non-namespace
      Specified by:
      getDefaultFunctionNamespace in interface StaticContext
      Returns:
      the default namesapce for functions

    • setXPathLanguageLevel

      public void setXPathLanguageLevel(int level)
      Set the XPath language level supported. The current levels supported are 20 (=2.0) and 31 (=3.1). The default is 3.1.
      Parameters:
      level - the XPath language level
      Since:
      9.3. From 9.8 this only affects the XPath syntax that is accepted; it does not affect the function library that is available, which must be set separately using setFunctionLibrary(FunctionLibraryList)

    • getXPathVersion

      public int getXPathVersion()
      Get the XPath language level supported, as an integer (being the actual version number times ten). In Saxon 9.9 the possible values are 20 (XPath 2.0), 30 (XPath 3.0), 31 (XPath 3.1), and 305 (XPath 3.0 plus the extensions defined in XSLT 3.0).
      Specified by:
      getXPathVersion in interface StaticContext
      Returns:
      the XPath language level; the return value will be either 20, 30, 305, or 31
      Since:
      9.7

    • setBackwardsCompatibilityMode

      public void setBackwardsCompatibilityMode(boolean option)
      Set XPath 1.0 backwards compatibility mode on or off
      Parameters:
      option - true if XPath 1.0 compatibility mode is to be set to true; otherwise false

    • isInBackwardsCompatibleMode

      public boolean isInBackwardsCompatibleMode()
      Determine whether Backwards Compatible Mode is used
      Specified by:
      isInBackwardsCompatibleMode in interface StaticContext
      Returns:
      true if XPath 1.0 compatibility mode is to be set to true; otherwise false

    • setDecimalFormatManager

      public void setDecimalFormatManager(DecimalFormatManager manager)
      Set the DecimalFormatManager used to resolve the names of decimal formats used in calls to the format-number() function.
      Parameters:
      manager - the decimal format manager for this static context, or null if no named decimal formats are available in this environment.

    • getRequiredContextItemType

      public ItemType getRequiredContextItemType()
      Get the required type of the context item. If no type has been explicitly declared for the context item, an instance of AnyItemType (representing the type item()) is returned.
      Specified by:
      getRequiredContextItemType in interface StaticContext
      Returns:
      the required type of the context item
      Since:
      9.3

    • getDecimalFormatManager

      public DecimalFormatManager getDecimalFormatManager()
      Get a DecimalFormatManager to resolve the names of decimal formats used in calls to the format-number() function.
      Specified by:
      getDecimalFormatManager in interface StaticContext
      Returns:
      the decimal format manager for this static context; a newly created empty DecimalFormatManager if none has been supplied
      Since:
      9.2

    • getKeyManager

      public KeyManager getKeyManager()
      Get the KeyManager, containing definitions of keys available for use.
      Specified by:
      getKeyManager in interface StaticContext
      Returns:
      the KeyManager. This is used to resolve key names, both explicit calls on key() used in XSLT, and system-generated calls on key() which may also appear in XQuery and XPath

    • setTypeAlias

      public void setTypeAlias(StructuredQName name, ItemType type)
      Register an alias for an ItemType. This is a Saxon extension. If typename has been registered as an alias for, say, map{xs:string, xs:integer*}, then the syntax ~typename is accepted anywhere this ItemType would be accepted.

    • resolveTypeAlias

      public ItemType resolveTypeAlias(StructuredQName typeName)
      Get type alias. This is a Saxon extension. A type alias is a QName which can be used as a shorthand for an itemtype, using the syntax ~typename anywhere that an item type is permitted.
      Specified by:
      resolveTypeAlias in interface StaticContext
      Parameters:
      typeName - the name of the type alias
      Returns:
      the corresponding item type, if the name is recognised; otherwise null.