Package net.sf.saxon.sxpath
Class AbstractStaticContext
- java.lang.Object
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- net.sf.saxon.sxpath.AbstractStaticContext
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- All Implemented Interfaces:
StaticContext
- Direct Known Subclasses:
IndependentContext
,JAXPXPathStaticContext
,UseWhenStaticContext
public abstract class AbstractStaticContext extends java.lang.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.
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Constructor Summary
Constructors Constructor Description AbstractStaticContext()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected void
addFunctionLibrary(FunctionLibrary library)
Add a function library to the list of function librariesvoid
declareCollation(java.lang.String name, StringCollator comparator, boolean isDefault)
Declare a named collationjava.lang.String
getBaseURI()
Get the Base URI, for resolving any relative URI's used in the expression.StringCollator
getCollation(java.lang.String name)
Get a named collation.int
getColumnNumber()
Return the character position where the current document event ends.Configuration
getConfiguration()
Get the system configurationjava.lang.String
getDefaultCollationName()
Get the name of the default collation.java.lang.String
getDefaultElementNamespace()
Get the default namespace URI for elements and types Return NamespaceConstant.NULL (that is, the zero-length string) for the non-namespacejava.lang.String
getDefaultFunctionNamespace()
Get the default function namespace.Executable
getExecutable()
Get the Executable (representing a complete stylesheet or query)FunctionLibrary
getFunctionLibrary()
Get the function library containing all the in-scope functions available in this static context.int
getHostLanguage()
Get the host language (XSLT, XQuery, XPath) used to implement the code in this containerint
getLineNumber()
Get the line number of the expression within that container.LocationMap
getLocationMap()
Get the location map.LocationProvider
getLocationProvider()
Get the LocationProvider allowing location identifiers to be resolved.NamePool
getNamePool()
Get the NamePool used for compiling expressionsjava.lang.String
getPublicId()
Return the public identifier.java.lang.String
getSystemId()
Get the system ID of the container of the expression.boolean
isAllowedBuiltInType(BuiltInAtomicType type)
Determine whether a built-in type is available in this context.boolean
isInBackwardsCompatibleMode()
Determine whether Backwards Compatible Mode is usedvoid
issueWarning(java.lang.String s, javax.xml.transform.SourceLocator locator)
Issue a compile-time warning.XPathContext
makeEarlyEvaluationContext()
Construct a dynamic context for early evaluation of constant subexpressionsboolean
replaceSubExpression(Expression original, Expression replacement)
Replace one subexpression by a replacement subexpressionvoid
setBackwardsCompatibilityMode(boolean compatible)
Set XPath 1.0 compatibility mode on or off (by default, it is false)void
setBaseURI(java.lang.String baseURI)
Set the base URI in the static contextprotected void
setConfiguration(Configuration config)
Set the Configuration.void
setDefaultElementNamespace(java.lang.String uri)
Set the default namespace for elements and typesprotected void
setDefaultFunctionLibrary()
Initialize the default function library for XPath.void
setDefaultFunctionNamespace(java.lang.String uri)
Set the default function namespacevoid
setFunctionLibrary(FunctionLibrary lib)
Set the function library to be usedvoid
setLocationMap(LocationMap locationMap)
Set the location map, which is used for translating location identifiers into URIs and line numbers-
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface net.sf.saxon.expr.StaticContext
bindVariable, getImportedSchemaNamespaces, getNamespaceResolver, getURIForPrefix, isImportedSchema
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Method Detail
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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
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getConfiguration
public Configuration getConfiguration()
Get the system configuration- Specified by:
getConfiguration
in interfaceStaticContext
- Returns:
- the Saxon configuration
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setDefaultFunctionLibrary
protected final void setDefaultFunctionLibrary()
Initialize the default function library for XPath. This can be overridden using setFunctionLibrary().
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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
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getExecutable
public Executable getExecutable()
Get the Executable (representing a complete stylesheet or query)- Returns:
- the executable
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getHostLanguage
public int getHostLanguage()
Get the host language (XSLT, XQuery, XPath) used to implement the code in this container- Returns:
- the value
Configuration.XPATH
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makeEarlyEvaluationContext
public XPathContext makeEarlyEvaluationContext()
Construct a dynamic context for early evaluation of constant subexpressions- Specified by:
makeEarlyEvaluationContext
in interfaceStaticContext
- Returns:
- a newly constructed dynamic context
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getLocationMap
public LocationMap getLocationMap()
Description copied from interface:StaticContext
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.- Specified by:
getLocationMap
in interfaceStaticContext
- Returns:
- the location map
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setLocationMap
public void setLocationMap(LocationMap locationMap)
Set the location map, which is used for translating location identifiers into URIs and line numbers- Parameters:
locationMap
- the location map to be used
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setBaseURI
public void setBaseURI(java.lang.String baseURI)
Set the base URI in the static context- Parameters:
baseURI
- the base URI of the expression
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getBaseURI
public java.lang.String getBaseURI()
Get the Base URI, for resolving any relative URI's used in the expression. Used by the document() function, resolve-uri(), etc.- Specified by:
getBaseURI
in interfaceStaticContext
- Returns:
- "" if no base URI has been set
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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 interfaceStaticContext
- Returns:
- the function library
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setFunctionLibrary
public void setFunctionLibrary(FunctionLibrary lib)
Set the function library to be used- Parameters:
lib
- the function library
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declareCollation
public void declareCollation(java.lang.String name, StringCollator comparator, boolean isDefault)
Declare a named collation- Parameters:
name
- The name of the collation (technically, a URI)comparator
- The StringCollator used to implement the collating sequenceisDefault
- True if this is to be used as the default collation
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getCollation
public StringCollator getCollation(java.lang.String name)
Get a named collation.- Specified by:
getCollation
in interfaceStaticContext
- Parameters:
name
- The name of the required collation. Supply null to get the default collation.- Returns:
- the collation identified by the given name, as set previously using declareCollation. Return null if no collation with this name is found.
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getDefaultCollationName
public java.lang.String getDefaultCollationName()
Get the name of the default collation.- Specified by:
getDefaultCollationName
in interfaceStaticContext
- Returns:
- the name of the default collation; or the name of the codepoint collation if no default collation has been defined
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getNamePool
public NamePool getNamePool()
Get the NamePool used for compiling expressions- Specified by:
getNamePool
in interfaceStaticContext
- Returns:
- the name pool
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issueWarning
public void issueWarning(java.lang.String s, javax.xml.transform.SourceLocator 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 System.err. To change the destination of messages, create a subclass of StandaloneContext that overrides this method.- Specified by:
issueWarning
in interfaceStaticContext
- 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.
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getSystemId
public java.lang.String getSystemId()
Get the system ID of the container of the expression. Used to construct error messages.- Specified by:
getSystemId
in interfaceStaticContext
- Returns:
- "" always
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getLineNumber
public int getLineNumber()
Get the line number of the expression within that container. Used to construct error messages.- Specified by:
getLineNumber
in interfaceStaticContext
- Returns:
- -1 always
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getDefaultElementNamespace
public java.lang.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 interfaceStaticContext
- Returns:
- the default namespace for elements and type
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setDefaultElementNamespace
public void setDefaultElementNamespace(java.lang.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
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setDefaultFunctionNamespace
public void setDefaultFunctionNamespace(java.lang.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
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getDefaultFunctionNamespace
public java.lang.String getDefaultFunctionNamespace()
Get the default function namespace. The value "" (or NamespaceConstant.NULL) represents the non-namespace- Specified by:
getDefaultFunctionNamespace
in interfaceStaticContext
- Returns:
- the default namesapce for functions
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setBackwardsCompatibilityMode
public void setBackwardsCompatibilityMode(boolean compatible)
Set XPath 1.0 compatibility mode on or off (by default, it is false)- Parameters:
compatible
- true if XPath 1.0 compatibility mode is to be set to true, false if it is to be set to false.
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isInBackwardsCompatibleMode
public boolean isInBackwardsCompatibleMode()
Determine whether Backwards Compatible Mode is used- Specified by:
isInBackwardsCompatibleMode
in interfaceStaticContext
- Returns:
- true if XPath 1.0 backwards compatibility has been selected (by default, it is false)
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isAllowedBuiltInType
public boolean isAllowedBuiltInType(BuiltInAtomicType type)
Determine 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.- Specified by:
isAllowedBuiltInType
in interfaceStaticContext
- 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
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getLocationProvider
public LocationProvider getLocationProvider()
Get the LocationProvider allowing location identifiers to be resolved.- Returns:
- the LocationProvider that translates location identifiers into URIs and line numbers
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replaceSubExpression
public boolean replaceSubExpression(Expression original, Expression replacement)
Replace one subexpression by a replacement subexpression- Parameters:
original
- the original subexpressionreplacement
- the replacement subexpression- Returns:
- true if the original subexpression was found
- Throws:
java.lang.UnsupportedOperationException
- (always)
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getPublicId
public java.lang.String getPublicId()
Return the public identifier.The return value is the public identifier of the document entity or of the external parsed entity in which the markup that triggered the event appears.
- Returns:
- null (always).
- See Also:
getSystemId()
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getColumnNumber
public int getColumnNumber()
Return the character position where the current document event ends.- Returns:
- -1 (no column number is available).
- See Also:
getLineNumber()
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