470 lines
20 KiB
C++
470 lines
20 KiB
C++
/*
|
|
* Copyright (c) 2001-2006
|
|
* DecisionSoft Limited. All rights reserved.
|
|
* Copyright (c) 2004-2006
|
|
* Progress Software Corporation. All rights reserved.
|
|
* Copyright (c) 2004-2006
|
|
* Oracle. All rights reserved.
|
|
*
|
|
* See the file LICENSE for redistribution information.
|
|
*
|
|
* $Id: XQContextImpl.hpp,v 1.24 2007/08/29 17:17:08 jpcs Exp $
|
|
*/
|
|
|
|
#ifndef XQCONTEXTIMPL_H
|
|
#define XQCONTEXTIMPL_H
|
|
|
|
#include <xqilla/framework/XQillaExport.hpp>
|
|
#include <xqilla/context/DynamicContext.hpp>
|
|
#include <xqilla/context/impl/VarStoreImpl.hpp>
|
|
#include <xqilla/schema/DocumentCache.hpp>
|
|
#include <xqilla/ast/ASTNode.hpp>
|
|
#include <xqilla/runtime/Sequence.hpp>
|
|
#include <xqilla/simple-api/XQilla.hpp>
|
|
#include <xqilla/framework/ProxyMemoryManager.hpp>
|
|
|
|
#include <xercesc/util/ValueHashTableOf.hpp>
|
|
|
|
class XQillaConfiguration;
|
|
class FunctionLookup;
|
|
|
|
class XQILLA_API XQContextImpl : public DynamicContext
|
|
{
|
|
public:
|
|
XQContextImpl(XQillaConfiguration *conf, XQilla::Language language,
|
|
XERCES_CPP_NAMESPACE_QUALIFIER MemoryManager* memMgr =
|
|
XERCES_CPP_NAMESPACE_QUALIFIER XMLPlatformUtils::fgMemoryManager);
|
|
~XQContextImpl();
|
|
|
|
virtual DynamicContext *createModuleContext(XERCES_CPP_NAMESPACE_QUALIFIER MemoryManager *memMgr =
|
|
XERCES_CPP_NAMESPACE_QUALIFIER XMLPlatformUtils::fgMemoryManager) const;
|
|
virtual DynamicContext *createModuleDynamicContext(const DynamicContext* moduleCtx, XERCES_CPP_NAMESPACE_QUALIFIER MemoryManager *memMgr =
|
|
XERCES_CPP_NAMESPACE_QUALIFIER XMLPlatformUtils::fgMemoryManager) const;
|
|
virtual DynamicContext *createDynamicContext(XERCES_CPP_NAMESPACE_QUALIFIER MemoryManager *memMgr =
|
|
XERCES_CPP_NAMESPACE_QUALIFIER XMLPlatformUtils::fgMemoryManager) const;
|
|
|
|
virtual XQillaConfiguration *getConfiguration() const { return _conf; }
|
|
|
|
virtual XQilla::Language getLanguage() const;
|
|
|
|
//////////////////////////////////////
|
|
// XQuery Static Context Accessors //
|
|
//////////////////////////////////////
|
|
|
|
/**
|
|
* Overrides the inherited method, and disowns any output
|
|
* document that was created with the previous memory manager.
|
|
*/
|
|
virtual void setMemoryManager(XPath2MemoryManager *memMgr);
|
|
|
|
/** Binds a prefix to a namespace URI */
|
|
virtual void setNamespaceBinding(const XMLCh* prefix, const XMLCh* uri);
|
|
|
|
/** Set the policy for boundary space */
|
|
virtual void setPreserveBoundarySpace(bool value);
|
|
/** Get the policy for boundary space */
|
|
virtual bool getPreserveBoundarySpace() const;
|
|
|
|
//////////////////////////////////////
|
|
// XQuery Dynamic Context Accessors //
|
|
//////////////////////////////////////
|
|
|
|
virtual void testInterrupt() const;
|
|
|
|
//////////////////////////////////
|
|
// Dynamic Context Accessors //
|
|
//////////////////////////////////
|
|
|
|
/** Resets the dynamic context, as if it had never been used */
|
|
virtual void clearDynamicContext();
|
|
|
|
virtual SequenceBuilder *createSequenceBuilder() const;
|
|
|
|
/** Returns the ItemFactory for this context, which is used to create XQilla items and other objects. */
|
|
virtual ItemFactory *getItemFactory() const;
|
|
/** Sets the ItemFactory for this context */
|
|
virtual void setItemFactory(ItemFactory *factory);
|
|
|
|
/** Get the context Item */
|
|
virtual Item::Ptr getContextItem() const;
|
|
/** Set the context item to item */
|
|
virtual void setContextItem(const Item::Ptr &item);
|
|
|
|
/** Get the context position */
|
|
virtual unsigned int getContextPosition() const;
|
|
/** Set the context position */
|
|
virtual void setContextPosition(unsigned int pos);
|
|
|
|
/** Get the context size */
|
|
virtual unsigned int getContextSize() const;
|
|
/** Set the context size */
|
|
virtual void setContextSize(unsigned int size);
|
|
|
|
virtual const VariableStore* getVariableStore() const;
|
|
virtual void setVariableStore(const VariableStore *store);
|
|
virtual const VariableStore* getGlobalVariableStore() const;
|
|
virtual void setGlobalVariableStore(const VariableStore *store);
|
|
virtual void setExternalVariable(const XMLCh *namespaceURI, const XMLCh *name, const Sequence &value);
|
|
virtual void setExternalVariable(const XMLCh *qname, const Sequence &value);
|
|
|
|
/** Return the current time */
|
|
virtual time_t getCurrentTime() const;
|
|
/** Set the current time */
|
|
virtual void setCurrentTime(time_t newTime);
|
|
|
|
/** Return the implicit timezone for this system.*/
|
|
virtual ATDurationOrDerived::Ptr getImplicitTimezone() const;
|
|
/** Set the implicit timezone */
|
|
virtual void setImplicitTimezone(const ATDurationOrDerived::Ptr &timezoneAsDuration);
|
|
|
|
/**
|
|
Register a callback object for resolving URIs. Multiple URIResolver
|
|
objects can be registered with the DynamicContext at the same time.
|
|
The most recently added URIResolver will be called first, and if it
|
|
returns NULL, subsequent ones will be called - ending in a call to
|
|
the fallback routines.
|
|
|
|
If "adopt" is false, the DynamicContext will not
|
|
adopt this object, making the user responsible for making sure that the
|
|
URIResolver object's lifespan matches or exceeds the life of the
|
|
DynamicContext.
|
|
*/
|
|
virtual void registerURIResolver(URIResolver *resolver, bool adopt);
|
|
/** Returns the default URIResolver */
|
|
virtual URIResolver *getDefaultURIResolver() const;
|
|
/** Sets the default URIResolver */
|
|
virtual void setDefaultURIResolver(URIResolver *resolver, bool adopt);
|
|
|
|
/* Resolve the given uri (and baseUri) to a DOMDocument. If the uri
|
|
is relative, the base uri is obtained from the context. */
|
|
virtual Sequence resolveDocument(const XMLCh* uri, const LocationInfo *location);
|
|
/* Resolve the given uri (and baseUri) to a list of DOMNode objects. If
|
|
the uri is relative, the base uri is obtained from the context. */
|
|
virtual Sequence resolveCollection(const XMLCh* uri, const LocationInfo *location);
|
|
virtual Sequence resolveDefaultCollection();
|
|
|
|
/** Creates a new UpdateFactory, used for performing updates.
|
|
Caller owns the returned object, and should delete it */
|
|
virtual UpdateFactory *createUpdateFactory() const;
|
|
|
|
//////////////////////////////////
|
|
// Static Context Accessors //
|
|
//////////////////////////////////
|
|
|
|
/** Get the static type of the context item */
|
|
virtual const StaticType &getContextItemType() const;
|
|
/** Set the static type of the context item */
|
|
virtual void setContextItemType(const StaticType &st);
|
|
|
|
/** Get the current XPath 1.0 compatibility mode */
|
|
virtual bool getXPath1CompatibilityMode() const;
|
|
/** Set the current XPath 1.0 compatibility mode */
|
|
virtual void setXPath1CompatibilityMode(bool newMode);
|
|
|
|
/** Get the NS resolver */
|
|
virtual const XERCES_CPP_NAMESPACE_QUALIFIER DOMXPathNSResolver* getNSResolver() const;
|
|
/** returns the URI that is bound in prefix in the current scope or zero
|
|
length string otherwise */
|
|
virtual const XMLCh* getUriBoundToPrefix(const XMLCh* prefix, const LocationInfo *location) const;
|
|
/** returns the prefix that is bound in uri in the current scope or zero
|
|
length string otherwise */
|
|
virtual const XMLCh* getPrefixBoundToUri(const XMLCh* uri) const;
|
|
/** Set the NS resolver */
|
|
virtual void setNSResolver(const XERCES_CPP_NAMESPACE_QUALIFIER DOMXPathNSResolver* resolver);
|
|
|
|
/** get the value of the default namespace for elements and types */
|
|
virtual const XMLCh* getDefaultElementAndTypeNS() const;
|
|
/** set the value of the default namespace for elements and types */
|
|
virtual void setDefaultElementAndTypeNS(const XMLCh* newNS);
|
|
|
|
/** Return the default namespace for functions */
|
|
virtual const XMLCh* getDefaultFuncNS() const;
|
|
/** Set the default namespace for functions */
|
|
virtual void setDefaultFuncNS(const XMLCh* newNS);
|
|
|
|
/** retrieve the repository for the grammars **/
|
|
virtual const DocumentCache* getDocumentCache() const;
|
|
/** sets the repository for the grammars **/
|
|
virtual void setDocumentCache(DocumentCache* docCache);
|
|
/** returns true if the type represented by uri:typename is an instance of uriToCheck:typeNameToCheck
|
|
*
|
|
* ie: to check
|
|
* xs:integer instance of xs:decimal,
|
|
* call
|
|
* isTypeOrDerivedFromType("xs", "integer", "xs", "decimal")
|
|
* (except of course, call with URIs, not prefixes!)
|
|
*/
|
|
virtual bool isTypeOrDerivedFromType(const XMLCh* const uri, const XMLCh* const typeName, const XMLCh* const uriToCheck, const XMLCh* const typeNameToCheck) const;
|
|
/**
|
|
* Sets the XMLEntityResolver that is used by Xerces when it is used
|
|
* to parse documents. This affects the behaviour of XQilla whenever
|
|
* it retrieves a DTD or XML Schema grammar.
|
|
*/
|
|
virtual void setXMLEntityResolver(XERCES_CPP_NAMESPACE_QUALIFIER XMLEntityResolver* const handler);
|
|
/** Returns the entity resolver currently set */
|
|
virtual XERCES_CPP_NAMESPACE_QUALIFIER XMLEntityResolver* getXMLEntityResolver() const;
|
|
|
|
/** Register a callback object for resolving module URIs */
|
|
virtual void setModuleResolver(ModuleResolver *resolver);
|
|
/** Returns the module resolver currently set */
|
|
virtual ModuleResolver *getModuleResolver() const;
|
|
/* Retrieve a list of locations for the given module URI */
|
|
virtual VectorOfStrings* resolveModuleURI(const XMLCh* uri) const;
|
|
|
|
/** add the location for the grammar of a specific namespace **/
|
|
virtual void addSchemaLocation(const XMLCh* uri, VectorOfStrings* locations, const LocationInfo *location);
|
|
|
|
/** get the variable type store */
|
|
virtual VariableTypeStore* getVariableTypeStore();
|
|
|
|
/** adds a custom function to the function table */
|
|
virtual void addCustomFunction(FuncFactory *func);
|
|
/** returns a function object with the given uri, localname and number of arguments triple */
|
|
virtual ASTNode *lookUpFunction(const XMLCh *uri, const XMLCh* name, const VectorOfASTNodes &v) const;
|
|
|
|
/** adds an external function implementation to the function table */
|
|
virtual void addExternalFunction(const ExternalFunction *func);
|
|
/** returns an external function implementation for the given uri and localname */
|
|
virtual const ExternalFunction *lookUpExternalFunction(const XMLCh *uri, const XMLCh *name, unsigned int numArgs) const;
|
|
|
|
/** Get the implementation for the specified collation */
|
|
virtual Collation* getCollation(const XMLCh* const URI, const LocationInfo *location) const;
|
|
/** Add a collation */
|
|
virtual void addCollation(Collation* collation);
|
|
|
|
/** Get the default collation */
|
|
virtual Collation* getDefaultCollation(const LocationInfo *location) const;
|
|
/** Specify which collation is the default one */
|
|
virtual void setDefaultCollation(const XMLCh* const URI);
|
|
|
|
/** Return the construction mode */
|
|
virtual ConstructionMode getConstructionMode() const;
|
|
/** Set the construction mode */
|
|
virtual void setConstructionMode(ConstructionMode newMode);
|
|
|
|
/** Return the ordering method for node sets */
|
|
virtual NodeSetOrdering getNodeSetOrdering() const;
|
|
/** Set the ordering method for node sets */
|
|
virtual void setNodeSetOrdering(NodeSetOrdering newOrder);
|
|
|
|
/** Return the base URI */
|
|
virtual const XMLCh* getBaseURI() const;
|
|
/** Set the base URI */
|
|
virtual void setBaseURI(const XMLCh* newURI);
|
|
|
|
/** Return the default ordering mode for FLWOR blocks */
|
|
virtual FLWOROrderingMode getDefaultFLWOROrderingMode() const;
|
|
/** Set the default ordering mode for FLWOR blocks */
|
|
virtual void setDefaultFLWOROrderingMode(FLWOROrderingMode newMode);
|
|
|
|
/** Set the policy for namespace inheritance */
|
|
virtual void setInheritNamespaces(bool value);
|
|
/** Get the policy for namespace inheritance */
|
|
virtual bool getInheritNamespaces() const;
|
|
|
|
/** Set the policy for namespace copy */
|
|
virtual void setPreserveNamespaces(bool value);
|
|
/** Get the policy for namespace copy */
|
|
virtual bool getPreserveNamespaces() const;
|
|
|
|
/** Set the revalidation mode */
|
|
virtual void setRevalidationMode(DocumentCache::ValidationMode mode);
|
|
/** Get the revalidation mode */
|
|
virtual DocumentCache::ValidationMode getRevalidationMode() const;
|
|
|
|
/** Set the listener for warning and trace messages */
|
|
virtual void setMessageListener(MessageListener *listener);
|
|
/** Gets the listener for warning and trace messages */
|
|
virtual MessageListener *getMessageListener() const;
|
|
|
|
/////////////////////////////////////////
|
|
// XQilla context specific accessors //
|
|
/////////////////////////////////////////
|
|
|
|
virtual const XMLCh *allocateTempVarName();
|
|
|
|
/** Get the memory manager */
|
|
virtual XPath2MemoryManager* getMemoryManager() const;
|
|
|
|
protected:
|
|
XQillaConfiguration *_conf;
|
|
XQilla::Language _language;
|
|
|
|
// The memory manager used to create this context
|
|
XERCES_CPP_NAMESPACE_QUALIFIER MemoryManager* _createdWith;
|
|
|
|
// used for managing the memory of objects inside this context
|
|
ProxyMemoryManager _internalMM;
|
|
|
|
////////////////////////////////
|
|
// Static Context variables //
|
|
////////////////////////////////
|
|
|
|
/** Static type of the context item */
|
|
StaticType _contextItemType;
|
|
|
|
/** XPath 1.0 compatibility mode. This value is true if rules for
|
|
* backward compatibility with XPath Version 1.0 are in effect;
|
|
* otherwise it is false */
|
|
bool _xpath1Compatibility;
|
|
|
|
/** In-scope namespaces. This is a set of (prefix, URI) pairs.
|
|
* The in-scope namespaces are used for resolving prefixes used
|
|
* in QNames within the expression */
|
|
const XERCES_CPP_NAMESPACE_QUALIFIER DOMXPathNSResolver* _nsResolver;
|
|
|
|
/** The original (global scope) DOMXPathNSResolver */
|
|
const XERCES_CPP_NAMESPACE_QUALIFIER DOMXPathNSResolver* _globalNSResolver;
|
|
|
|
/** Default element/type namespace. This is a namespace URI or "none". This
|
|
* namespace is used for any unprefixed QName appearing in a
|
|
* position where an element or type name is expected. */
|
|
const XMLCh* _defaultElementNS;
|
|
|
|
/** Default function namespace. This is a namespace URI.
|
|
* This namespace URI is used for any unprefixed QName appearing
|
|
* as the function name in a function call. */
|
|
const XMLCh* _functionNS;
|
|
|
|
/** In-scope schema definitions. This is a generic term for all
|
|
* the element, attribute, and type definitions that are in scope
|
|
* during processing of an expression. */
|
|
DocumentCache* _docCache;
|
|
|
|
/** In-scope variable types. This is a set of (QName, type) pairs.
|
|
* It defines the set of variables that have been declared and are
|
|
* available for reference within the expression. The QName
|
|
* represents the name of the variable, and the type represents its
|
|
* static data type */
|
|
VariableTypeStore* _varTypeStore;
|
|
|
|
/** In-scope functions. This part of the static context defines the
|
|
* set of functions that are available to be called from within an
|
|
* expression. Each function is uniquely identified by its QName and
|
|
* its arity (number of parameters). The static context maps the QName
|
|
* and arity into a function signature and a function definition. The
|
|
* function signature specifies the static types of the function
|
|
* parameters and the function result. */
|
|
FunctionLookup* _functionTable;
|
|
|
|
/** In-scope collations. This is a set of (URI, collation) pairs. It
|
|
* defines the names of the collations that are available for use in
|
|
* function calls that take a collation name as an argument. A collation
|
|
* may be regarded as an object that supports two functions: a function
|
|
* that given a set of strings, returns a sequence containing those strings
|
|
* in sorted order; and a function that given two strings, returns true if
|
|
* they are considered equal, and false if not. */
|
|
std::vector<Collation*, XQillaAllocator<Collation*> > _collations;
|
|
|
|
/** Default collation. This is a collation. This collation is used by
|
|
* string comparison functions when no explicit collation is specified. */
|
|
const XMLCh* _defaultCollation;
|
|
|
|
/** Construction mode. The construction mode governs the behavior of
|
|
* element constructors. If construction mode is preserve, the type
|
|
* of a constructed element node is xs:anyType, and the attributes
|
|
* and descendants of the constructed element retain their original
|
|
* types. If construction mode is strip, the type of the constructed
|
|
* element node and all its descendants is xdt:untyped, and attributes
|
|
* of the constructed element have type xdt:untypedAtomic */
|
|
ConstructionMode _constructionMode;
|
|
|
|
/** Ordering mode, which has the value ordered or unordered, affects
|
|
* the ordering of the result sequence returned by path expressions,
|
|
* union, intersect, and except expressions, and FLWOR expressions
|
|
* that have no order by clause. */
|
|
NodeSetOrdering _ordering;
|
|
|
|
/** Default ordering for empty sequences. This component controls whether an
|
|
* empty sequence is interpreted as the greatest value or as the least value
|
|
* during processing of an order by clause in a FLWOR expression, as described
|
|
* in 3.8.3 Order By and Return Clauses.] Its value may be greatest or least. */
|
|
FLWOROrderingMode _flworOrderingMode;
|
|
|
|
/** Boundary-space policy. This component controls the processing of boundary
|
|
* whitespace by element constructors, as described in 3.7.1.4 Whitespace
|
|
* in Element Content.] Its value may be preserve or strip. */
|
|
bool _bPreserveBoundarySpace;
|
|
|
|
/** Copy-namespaces mode. This component controls the namespace bindings
|
|
* that are assigned when an existing element node is copied by an element
|
|
* constructor, as described in 3.7.1 Direct Element Constructors. Its value
|
|
* consists of two parts: preserve or no-preserve, and inherit or no-inherit. */
|
|
bool _bPreserveNamespaces,
|
|
_bInheritNamespaces;
|
|
|
|
/** The revalidation mode for XQuery Update */
|
|
DocumentCache::ValidationMode _revalidationMode;
|
|
|
|
/** The message listener, for warnings and trace messages */
|
|
MessageListener *_messageListener;
|
|
|
|
/** Base URI. This is an absolute URI, used when necessary in the
|
|
* resolution of relative URIs (for example, by the fn:resolve- uri
|
|
* function.) The base URI is always provided by the external environment. */
|
|
const XMLCh* _baseURI;
|
|
|
|
/////////////////////////////////
|
|
// Dynamic Context Variables //
|
|
/////////////////////////////////
|
|
|
|
/** The context item is the item currently being processed. */
|
|
Item::Ptr _contextItem;
|
|
|
|
/** The context position is the position of the context item within
|
|
* the sequence of items currently being processed. */
|
|
unsigned int _contextPosition;
|
|
|
|
/** The context size is the number of items in the sequence of
|
|
* items currently being processed. */
|
|
unsigned int _contextSize;
|
|
|
|
/** In-scope variable values. This is a set of (QName, Sequence) pairs.
|
|
* It defines the set of variables that have been declared and are
|
|
* available for reference within the expression. The QName
|
|
* represents the name of the variable, and the Sequence represents its
|
|
* value */
|
|
const VariableStore *_varStore;
|
|
const VariableStore *_globalVarStore;
|
|
VarStoreImpl _defaultVarStore;
|
|
|
|
/** Current date and time. This information represents an
|
|
* implementation-dependent point in time during processing of a query
|
|
* or transformation */
|
|
time_t _currentTime;
|
|
|
|
/** Implicit timezone. This is the timezone to be used when a date,
|
|
* time, or dateTime value that does not have a timezone is used in a
|
|
* comparison or in any other operation. This value is an instance of
|
|
* xdt:dayTimeDuration */
|
|
ATDurationOrDerived::Ptr _implicitTimezone;
|
|
|
|
/** For each atomic type in the in-scope type definitions, there is
|
|
* a constructor function in the in-scope functions. Constructor
|
|
* functions are discussed in 3.10.4 Constructor Functions */
|
|
ItemFactory* _itemFactory;
|
|
|
|
////////////////////////////////////////
|
|
// XQilla Context specific variables //
|
|
////////////////////////////////////////
|
|
|
|
struct ResolverEntry {
|
|
ResolverEntry() : resolver(0), adopt(false) {}
|
|
ResolverEntry(URIResolver *r, bool a) : resolver(r), adopt(a) {}
|
|
URIResolver *resolver;
|
|
bool adopt;
|
|
};
|
|
|
|
/// A stack of URIResolver pointers
|
|
std::vector<ResolverEntry, XQillaAllocator<ResolverEntry> > _resolvers;
|
|
ResolverEntry _defaultResolver;
|
|
|
|
ModuleResolver *_moduleResolver;
|
|
|
|
unsigned int _tmpVarCounter;
|
|
|
|
// used for memory management in expression evaluation
|
|
XPath2MemoryManager* _memMgr;
|
|
};
|
|
|
|
#endif
|