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Java Source Code / Java Documentation » XML » saxonb » net.sf.saxon.xpath 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   net.sf.saxon.xpath.StandaloneContext

StandaloneContext
public class StandaloneContext implements StaticContext,NamespaceResolver(Code)
A StandaloneContext provides a context for parsing an XPath expression in a context other than a stylesheet. In particular, it is used to support the JAXP 1.3 XPath API. This API does not actually expose the StaticContext object directly; rather, the static context (namespaces, variables, and functions) is manipulated through the XPath object, implemented in Saxon by the XPathEvaluator



Constructor Summary
public  StandaloneContext()
    
public  StandaloneContext(Configuration config)
     Create a StandaloneContext using a specific Configuration.
Parameters:
  config - the Configuration.
public  StandaloneContext(NodeInfo node)
     Create a StandaloneContext using a specific Node.

Method Summary
public  VariableReferencebindVariable(int fingerprint)
     Bind a variable used in an XPath Expression to the XSLVariable element in which it is declared.
public  voidclearAllNamespaces()
     Clear all the declared namespaces, including the standard ones (xml, xslt, saxon).
public  voidclearNamespaces()
     Clear all the declared namespaces, except for the standard ones (xml, xslt, saxon, xdt).
public  voiddeclareCollation(String name, Comparator comparator, boolean isDefault)
    
public  voiddeclareNamespace(String prefix, String uri)
     Declare a namespace whose prefix can be used in expressions.
public  VariabledeclareVariable(String qname, Object initialValue)
     Declare a variable.
public  StringgetBaseURI()
     Get the Base URI of the stylesheet element, for resolving any relative URI's used in the expression.
public  ComparatorgetCollation(String name)
     Get a named collation.
public  ConfigurationgetConfiguration()
    
public  StringgetDefaultCollationName()
     Get the name of the default collation.
public  shortgetDefaultElementNamespace()
    
public  StringgetDefaultFunctionNamespace()
    
public  FunctionLibrarygetFunctionLibrary()
    
public  SetgetImportedSchemaNamespaces()
    
public  intgetLineNumber()
     Get the line number of the expression within that container.
public  LocationMapgetLocationMap()
    
public  NamePoolgetNamePool()
    
public  NamespaceContextgetNamespaceContext()
    
public  NamespaceResolvergetNamespaceResolver()
    
public  SlotManagergetStackFrameMap()
    
public  StringgetSystemId()
     Get the system ID of the container of the expression.
public  StringgetURIForPrefix(String prefix)
     Get the URI for a prefix, using the declared namespaces as the context for namespace resolution.
public  StringgetURIForPrefix(String prefix, boolean useDefault)
     Get the namespace URI corresponding to a given prefix.
public  XPathFunctionResolvergetXPathFunctionResolver()
    
public  XPathVariableResolvergetXPathVariableResolver()
    
public  voidimportSchema(Source source)
     Import a schema.
public  booleanisAllowedBuiltInType(AtomicType type)
     Determine whether a built-in type is available in this context.
public  booleanisImportedSchema(String namespace)
     Determine whether a Schema for a given target namespace has been imported.
public  booleanisInBackwardsCompatibleMode()
    
public  voidissueWarning(String s, SourceLocator locator)
     Issue a compile-time warning.
public  IteratoriteratePrefixes()
     Get an iterator over all the prefixes declared in this namespace context.
public  XPathContextmakeEarlyEvaluationContext()
    
public  voidsetBackwardsCompatibilityMode(boolean backwardsCompatible)
    
public  voidsetBaseURI(String baseURI)
    
public  voidsetDefaultElementNamespace(String uri)
    
public  voidsetDefaultFunctionNamespace(String uri)
    
public  voidsetFunctionLibrary(FunctionLibrary lib)
    
public  voidsetLocationMap(LocationMap locationMap)
    
public  voidsetNamespaceContext(NamespaceContext context)
     Supply the NamespaceContext used to resolve namespaces.
public  voidsetNamespaces(NodeInfo node)
     Set all the declared namespaces to be the namespaces that are in-scope for a given node.
public  voidsetXPathFunctionResolver(XPathFunctionResolver xPathFunctionResolver)
    
public  voidsetXPathVariableResolver(XPathVariableResolver resolver)
     Set an XPathVariableResolver.


Constructor Detail
StandaloneContext
public StandaloneContext()(Code)
Create a StandaloneContext using the default Configuration and NamePool



StandaloneContext
public StandaloneContext(Configuration config)(Code)
Create a StandaloneContext using a specific Configuration.
Parameters:
  config - the Configuration. For schema-aware XPath expressions, this must be a SchemaAwareConfiguration.



StandaloneContext
public StandaloneContext(NodeInfo node)(Code)
Create a StandaloneContext using a specific Node. This node is used to initialize the NamePool and also to establish the initial set of in-scope namespaces.




Method Detail
bindVariable
public VariableReference bindVariable(int fingerprint) throws StaticError(Code)
Bind a variable used in an XPath Expression to the XSLVariable element in which it is declared. This method is provided for use by the XPath parser, and it should not be called by the user of the API, or overridden, unless variables are to be declared using a mechanism other than the declareVariable method of this class.

If the variable has been explicitly declared using StandaloneContext.declareVariable(String,Object) , that value is used; otherwise if a variable resolved has been supplied using StandaloneContext.setXPathVariableResolver(javax.xml.xpath.XPathVariableResolver) then that is used.
throws:
  StaticError - If no variable with the given name is found, or if the value suppliedfor the variable cannot be converted to an XPath value.




clearAllNamespaces
public void clearAllNamespaces()(Code)
Clear all the declared namespaces, including the standard ones (xml, xslt, saxon). Leave only the XML namespace and the default namespace (xmlns="")



clearNamespaces
public void clearNamespaces()(Code)
Clear all the declared namespaces, except for the standard ones (xml, xslt, saxon, xdt). This doesn't clear the namespace context set using StandaloneContext.setNamespaceContext



declareCollation
public void declareCollation(String name, Comparator comparator, boolean isDefault)(Code)
Declare a named collation
Parameters:
  name - The name of the collation (technically, a URI)
Parameters:
  comparator - The Java Comparator used to implement the collating sequence
Parameters:
  isDefault - True if this is to be used as the default collation



declareNamespace
public void declareNamespace(String prefix, String uri)(Code)
Declare a namespace whose prefix can be used in expressions. Namespaces may either be pre-declared (the traditional Saxon interface), or they may be resolved on demand using a supplied NamespaceContext. When a prefix has to be resolved, the parser looks first in the pre-declared namespaces, then in the supplied NamespaceContext object.
Parameters:
  prefix - The namespace prefix. Must not be null. Must not be the empty string("") - unqualified names in an XPath expression always refer to the null namespace.
Parameters:
  uri - The namespace URI. Must not be null.



declareVariable
public Variable declareVariable(String qname, Object initialValue) throws XPathException(Code)
Declare a variable. A variable may be declared before an expression referring to it is compiled. Alternatively, a JAXP XPathVariableResolver may be supplied to perform the resolution. A variable that has been explicitly declared is used in preference.
Parameters:
  qname - Lexical QName identifying the variable. The namespace prefix, ifany, must have been declared before this method is called, or must be resolvableusing the namespace context.
Parameters:
  initialValue - The initial value of the variable. A Java object that canbe converted to an XPath value.



getBaseURI
public String getBaseURI()(Code)
Get the Base URI of the stylesheet element, for resolving any relative URI's used in the expression. Used by the document() function, resolve-uri(), etc. "" if no base URI has been set



getCollation
public Comparator getCollation(String name)(Code)
Get a named collation. the collation identified by the given name, as set previously using declareCollation.Return null if no collation with this name is found.



getConfiguration
public Configuration getConfiguration()(Code)
Get the system configuration



getDefaultCollationName
public String getDefaultCollationName()(Code)
Get the name of the default collation. the name of the default collation; or the name of the codepoint collationif no default collation has been defined



getDefaultElementNamespace
public short getDefaultElementNamespace()(Code)
Get the default XPath namespace, as a namespace code that can be looked up in the NamePool



getDefaultFunctionNamespace
public String getDefaultFunctionNamespace()(Code)
Get the default function namespace



getFunctionLibrary
public FunctionLibrary getFunctionLibrary()(Code)
Get the function library containing all the in-scope functions available in this static context



getImportedSchemaNamespaces
public Set getImportedSchemaNamespaces()(Code)
Get the set of imported schemas a Set, the set of URIs representing the names of imported schemas



getLineNumber
public int getLineNumber()(Code)
Get the line number of the expression within that container. Used to construct error messages. -1 always



getLocationMap
public LocationMap getLocationMap()(Code)



getNamePool
public NamePool getNamePool()(Code)
Get the NamePool used for compiling expressions



getNamespaceContext
public NamespaceContext getNamespaceContext()(Code)
Get the NamespaceContext that was set using StandaloneContext.setNamespaceContext



getNamespaceResolver
public NamespaceResolver getNamespaceResolver()(Code)



getStackFrameMap
public SlotManager getStackFrameMap()(Code)
Get the stack frame map containing the slot number allocations for the variables declared in this static context



getSystemId
public String getSystemId()(Code)
Get the system ID of the container of the expression. Used to construct error messages. "" always



getURIForPrefix
public String getURIForPrefix(String prefix) throws XPathException(Code)
Get the URI for a prefix, using the declared namespaces as the context for namespace resolution. The default namespace is NOT used when the prefix is empty. This method is provided for use by the XPath parser.
Parameters:
  prefix - The prefix
throws:
  net.sf.saxon.trans.XPathException - if the prefix is not declared



getURIForPrefix
public String getURIForPrefix(String prefix, boolean useDefault)(Code)
Get the namespace URI corresponding to a given prefix. Return null if the prefix is not in scope. This method first searches any namespaces declared using StandaloneContext.declareNamespace(String,String) , and then searches any namespace context supplied using StandaloneContext.setNamespaceContext(javax.xml.namespace.NamespaceContext) .
Parameters:
  prefix - the namespace prefix
Parameters:
  useDefault - true if the default namespace is to be used when theprefix is "" the uri for the namespace, or null if the prefix is not in scope.Return "" if the prefix maps to the null namespace.



getXPathFunctionResolver
public XPathFunctionResolver getXPathFunctionResolver()(Code)



getXPathVariableResolver
public XPathVariableResolver getXPathVariableResolver()(Code)
Get the XPathVariableResolver



importSchema
public void importSchema(Source source) throws SchemaException(Code)
Import a schema. This is possible only if the schema-aware version of Saxon is being used, and if the Configuration is a SchemaAwareConfiguration. Having imported a schema, the types defined in that schema become part of the static context.
Parameters:
  source - A Source object identifying the schema document to be loaded
throws:
  net.sf.saxon.type.SchemaException - if the schema contained in this document is invalid
throws:
  UnsupportedOperationException - if the configuration is not schema-aware



isAllowedBuiltInType
public boolean isAllowedBuiltInType(AtomicType type)(Code)
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.
Parameters:
  type - the supposedly built-in type. This will always be a type in theXS or XDT namespace. true if this type can be used in this static context



isImportedSchema
public boolean isImportedSchema(String namespace)(Code)
Determine 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). This implementation always returns false: the standalone XPath API does not supportschema-aware processing.



isInBackwardsCompatibleMode
public boolean isInBackwardsCompatibleMode()(Code)
Determine whether Backwards Compatible Mode is used false; XPath 1.0 compatibility mode is not supported in the standaloneXPath API



issueWarning
public void issueWarning(String s, SourceLocator locator)(Code)
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.



iteratePrefixes
public Iterator iteratePrefixes()(Code)
Get an iterator over all the prefixes declared in this namespace context. This will include the default namespace (prefix="") and the XML namespace where appropriate. The iterator only covers namespaces explicitly declared using StandaloneContext.declareNamespace(String,String) ; it does not include namespaces declared using StandaloneContext.setNamespaceContext(javax.xml.namespace.NamespaceContext) , because the JAXP NamespaceContext class provides no way to discover all the namespaces available.



makeEarlyEvaluationContext
public XPathContext makeEarlyEvaluationContext()(Code)
Construct a dynamic context for early evaluation of constant subexpressions



setBackwardsCompatibilityMode
public void setBackwardsCompatibilityMode(boolean backwardsCompatible)(Code)
Set XPath 1.0 backwards compatibility mode
Parameters:
  backwardsCompatible - if true, expressions will be evaluated withXPath 1.0 compatibility mode set to true.



setBaseURI
public void setBaseURI(String baseURI)(Code)
Set the base URI in the static context



setDefaultElementNamespace
public void setDefaultElementNamespace(String uri)(Code)
Set the default namespace for element and type names



setDefaultFunctionNamespace
public void setDefaultFunctionNamespace(String uri)(Code)
Set the default function namespace



setFunctionLibrary
public void setFunctionLibrary(FunctionLibrary lib)(Code)
Set the function library to be used



setLocationMap
public void setLocationMap(LocationMap locationMap)(Code)



setNamespaceContext
public void setNamespaceContext(NamespaceContext context)(Code)
Supply the NamespaceContext used to resolve namespaces. This supplements namespaces that have been explicitly declared using StandaloneContext.declareNamespace or that have been implicitly declared using StandaloneContext.setNamespaces(net.sf.saxon.om.NodeInfo)



setNamespaces
public void setNamespaces(NodeInfo node)(Code)
Set all the declared namespaces to be the namespaces that are in-scope for a given node. In addition, the standard namespaces (xml, xslt, saxon) are declared.
Parameters:
  node - The node whose in-scope namespaces are to be used as the context namespaces.Note that this will have no effect unless this node is an element.



setXPathFunctionResolver
public void setXPathFunctionResolver(XPathFunctionResolver xPathFunctionResolver)(Code)



setXPathVariableResolver
public void setXPathVariableResolver(XPathVariableResolver resolver)(Code)
Set an XPathVariableResolver. This is used to resolve variable references if no variable has been explicitly declared.
Parameters:
  resolver - A JAXP 1.3 XPathVariableResolver



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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