net.sf.saxon.expr
Interface StaticContext

All Known Subinterfaces:

XPathStaticContext, XSLTStaticContext

All Known Implementing Classes:

AbstractStaticContext, DedicatedStaticContext, ExpressionContext, IndependentContext, JAXPXPathStaticContext, QueryLibrary, QueryLibraryImpl, QueryModule, SchemaElement.XPathStaticContext, UseWhenStaticContext

public interface StaticContext

A StaticContext contains the information needed while an expression or pattern is being parsed. The information is also sometimes needed at run-time.

Method Summary

Expression	bindVariable(StructuredQName qName) Bind a variable used in this element to the XSLVariable element in which it is declared
String	getBaseURI() Get the Base URI of the stylesheet element, for resolving any relative URI's used in the expression.
StringCollator	getCollation(String name) Get a named collation.
Configuration	getConfiguration() Get the system configuration
DecimalFormatManager	getDecimalFormatManager() Get a DecimalFormatManager to resolve the names of decimal formats used in calls to the format-number() function.
String	getDefaultCollationName() Get the name of the default collation.
String	getDefaultElementNamespace() Get the default XPath namespace for elements and types
String	getDefaultFunctionNamespace() Get the default function namespace
FunctionLibrary	getFunctionLibrary() Get the function library containing all the in-scope functions available in this static context
Set<String>	getImportedSchemaNamespaces() Get the set of imported schemas
int	getLineNumber() Get the line number of the expression within its containing entity Returns -1 if no line number is available
LocationMap	getLocationMap() Get the location map.
NamePool	getNamePool() Get the NamePool used for compiling expressions
NamespaceResolver	getNamespaceResolver() Get a namespace resolver to resolve the namespaces declared in this static context.
ItemType	getRequiredContextItemType() Get the required type of the context item.
String	getSystemId() Get the System ID of the container of the expression.
String	getURIForPrefix(String prefix) Get the URI for a namespace prefix.
DecimalValue	getXPathLanguageLevel() Get the XPath language level supported, as a decimal value.
boolean	isAllowedBuiltInType(BuiltInAtomicType type) Ask whether a built-in type is available in this context.
boolean	isImportedSchema(String namespace) Ask whether a Schema for a given target namespace has been imported.
boolean	isInBackwardsCompatibleMode() Determine whether backwards compatibility mode is used
boolean	isSchemaAware() Ask whether expressions compiled under this static context are schema-aware.
void	issueWarning(String message, SourceLocator locator) Issue a compile-time warning.
XPathContext	makeEarlyEvaluationContext() Construct a dynamic context for early evaluation of constant subexpressions.

Method Detail

getConfiguration

Configuration getConfiguration()

Get the system configuration

Returns:

the Saxon configuration

isSchemaAware

boolean isSchemaAware()

Ask whether expressions compiled under this static context are schema-aware. They must be schema-aware if the expression is to handle typed (validated) nodes

Returns:

true if expressions are schema-aware

makeEarlyEvaluationContext

XPathContext makeEarlyEvaluationContext()

Construct a dynamic context for early evaluation of constant subexpressions.

Returns:

a newly constructed dynamic context

getLocationMap

LocationMap getLocationMap()

Get the location map. This is a mapping from short location ids held with each expression or subexpression, to a fully-resolved location in a source stylesheet or query.

Returns:

the location map

issueWarning

void issueWarning(String message,
                  SourceLocator locator)

Issue a compile-time warning.

Parameters:

message - The warning message. This should not contain any prefix such as "Warning".

locator - the location of the construct in question. May be null.

getSystemId

String getSystemId()

Get the System ID of the container of the expression. This is the containing entity (file) and is therefore useful for diagnostics. Use getBaseURI() to get the base URI, which may be different.

Returns:

the system ID

getLineNumber

int getLineNumber()

Get the line number of the expression within its containing entity Returns -1 if no line number is available

Returns:

the line number, or -1 if not available

getBaseURI

String getBaseURI()

Get the Base URI of the stylesheet element, for resolving any relative URI's used in the expression. Used by the document(), doc(), resolve-uri(), and base-uri() functions. May return null if the base URI is not known.

Returns:

the static base URI, or null if not known

getURIForPrefix

String getURIForPrefix(String prefix)
                       throws XPathException

Get the URI for a namespace prefix. The default namespace is NOT used when the prefix is empty.

Parameters:

prefix - The namespace prefix.

Returns:

the corresponding namespace URI

Throws:

XPathException - if the prefix is not declared

getNamePool

NamePool getNamePool()

Get the NamePool used for compiling expressions

Returns:

the name pool

bindVariable

Expression bindVariable(StructuredQName qName)
                        throws XPathException

Bind a variable used in this element to the XSLVariable element in which it is declared

Parameters:

qName - The name of the variable

Returns:

an expression representing the variable reference, This will often be a VariableReference, suitably initialized to refer to the corresponding variable declaration, but in general it can be any expression.

Throws:

XPathException

getFunctionLibrary

FunctionLibrary getFunctionLibrary()

Get the function library containing all the in-scope functions available in this static context

Returns:

the function library

getCollation

StringCollator getCollation(String name)

Get a named collation.

Parameters:

name - The name of the required collation. Supply null to get the default collation.

Returns:

the collation; or null if the required collation is not found.

getDefaultCollationName

String getDefaultCollationName()

Get the name of the default collation.

Returns:

the name of the default collation; or the name of the codepoint collation if no default collation has been defined

getDefaultElementNamespace

String getDefaultElementNamespace()

Get the default XPath namespace for elements and types

Returns:

the default namespace, or NamespaceConstant.NULL for the non-namespace

getDefaultFunctionNamespace

String getDefaultFunctionNamespace()

Get the default function namespace

Returns:

the default namespace for function names

isInBackwardsCompatibleMode

boolean isInBackwardsCompatibleMode()

Determine whether backwards compatibility mode is used

Returns:

true if 1.0 compaibility mode is in force.

isImportedSchema

boolean isImportedSchema(String namespace)

Ask whether a Schema for a given target namespace has been imported. Note that the in-scope element declarations, attribute declarations and schema types are the types registered with the (schema-aware) configuration, provided that their namespace URI is registered in the static context as being an imported schema namespace. (A consequence of this is that within a Configuration, there can only be one schema for any given namespace, including the null namespace).

Parameters:

namespace - the target namespace in question

Returns:

true if the given namespace has been imported

getImportedSchemaNamespaces

Set<String> getImportedSchemaNamespaces()

Get the set of imported schemas

Returns:

a Set, the set of URIs representing the target namespaces of imported schemas, using the zero-length string to denote the "null" namespace.

isAllowedBuiltInType

boolean isAllowedBuiltInType(BuiltInAtomicType type)

Ask whether a built-in type is available in this context. This method caters for differences between host languages as to which set of types are built in.

Parameters:

type - the supposedly built-in type. This will always be a type in the XS namespace.

Returns:

true if this type can be used in this static context

getNamespaceResolver

NamespaceResolver getNamespaceResolver()

Get a namespace resolver to resolve the namespaces declared in this static context.

Returns:

a namespace resolver.

getRequiredContextItemType

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.

Returns:

the required type of the context item

Since:

9.3

getDecimalFormatManager

DecimalFormatManager getDecimalFormatManager()

Get a DecimalFormatManager to resolve the names of decimal formats used in calls to the format-number() function.

Returns:

the decimal format manager for this static context, or null if no named decimal formats are available in this environment.

Since:

9.2

getXPathLanguageLevel

DecimalValue getXPathLanguageLevel()

Get the XPath language level supported, as a decimal value. The current levels supported are 2.0, and 3.0. The default is 2.0. If running XQuery 1.0, the value is 2.0; if running XQuery 3.0, it is 3.0.

Returns:

the XPath language level; the return value will be either DecimalValue.TWO or DecimalValue.THREE

Since:

9.3