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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef _DBA_COREDATAACCESS_MODELIMPL_HXX_
+#define _DBA_COREDATAACCESS_MODELIMPL_HXX_
+
+#include "apitools.hxx"
+#include "bookmarkcontainer.hxx"
+#include "ContentHelper.hxx"
+#include "core_resource.hxx"
+#include "documentevents.hxx"
+
+/** === begin UNO includes === **/
+#include <com/sun/star/beans/PropertyAttribute.hpp>
+#include <com/sun/star/beans/PropertyValue.hpp>
+#include <com/sun/star/beans/XPropertyAccess.hpp>
+#include <com/sun/star/container/XContainerListener.hpp>
+#include <com/sun/star/document/XDocumentSubStorageSupplier.hpp>
+#include <com/sun/star/document/XEventListener.hpp>
+#include <com/sun/star/document/XStorageBasedDocument.hpp>
+#include <com/sun/star/embed/ElementModes.hpp>
+#include <com/sun/star/embed/XStorage.hpp>
+#include <com/sun/star/embed/XTransactionListener.hpp>
+#include <com/sun/star/frame/XModel.hpp>
+#include <com/sun/star/frame/XStorable.hpp>
+#include <com/sun/star/lang/NotInitializedException.hpp>
+#include <com/sun/star/lang/XMultiServiceFactory.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/lang/XSingleServiceFactory.hpp>
+#include <com/sun/star/sdb/XBookmarksSupplier.hpp>
+#include <com/sun/star/sdb/XCompletedConnection.hpp>
+#include <com/sun/star/sdb/XFormDocumentsSupplier.hpp>
+#include <com/sun/star/sdb/XQueryDefinitionsSupplier.hpp>
+#include <com/sun/star/sdb/XReportDocumentsSupplier.hpp>
+#include <com/sun/star/sdbc/XDataSource.hpp>
+#include <com/sun/star/sdbc/XIsolatedConnection.hpp>
+#include <com/sun/star/sdbcx/XTablesSupplier.hpp>
+#include <com/sun/star/util/XCloseable.hpp>
+#include <com/sun/star/util/XFlushable.hpp>
+#include <com/sun/star/util/XModifiable.hpp>
+#include <com/sun/star/util/XNumberFormatsSupplier.hpp>
+#include <com/sun/star/util/XNumberFormatter.hpp>
+#include <com/sun/star/util/XRefreshable.hpp>
+#include <com/sun/star/sdb/XDocumentDataSource.hpp>
+#include <com/sun/star/frame/DoubleInitializationException.hpp>
+/** === end UNO includes === **/
+
+#include <comphelper/broadcasthelper.hxx>
+#include <comphelper/namedvaluecollection.hxx>
+#include <comphelper/proparrhlp.hxx>
+#include <comphelper/sharedmutex.hxx>
+#include <connectivity/CommonTools.hxx>
+#include <cppuhelper/propshlp.hxx>
+#include <cppuhelper/weakref.hxx>
+#include <sfx2/docmacromode.hxx>
+#include <sfx2/docstoragemodifylistener.hxx>
+#include <tools/string.hxx>
+#include <unotools/sharedunocomponent.hxx>
+#include <vos/mutex.hxx>
+
+#include <memory>
+
+namespace comphelper
+{
+ class NamedValueCollection;
+}
+
+//........................................................................
+namespace dbaccess
+{
+//........................................................................
+
+typedef ::com::sun::star::uno::WeakReference< ::com::sun::star::sdbc::XConnection > OWeakConnection;
+typedef std::vector< OWeakConnection > OWeakConnectionArray;
+
+struct AsciiPropertyValue
+{
+ // note: the canonic member order would be AsciiName / DefaultValue, but
+ // this crashes on unxlngi6.pro, since there's a bug which somehow results in
+ // getDefaultDataSourceSettings returning corrupted Any instances then.
+ ::com::sun::star::uno::Any DefaultValue;
+ const sal_Char* AsciiName;
+ const ::com::sun::star::uno::Type& ValueType;
+
+ AsciiPropertyValue()
+ :DefaultValue( )
+ ,AsciiName( NULL )
+ ,ValueType( ::cppu::UnoType< ::cppu::UnoVoidType >::get() )
+ {
+ }
+
+ AsciiPropertyValue( const sal_Char* _pAsciiName, const ::com::sun::star::uno::Any& _rDefaultValue )
+ :DefaultValue( _rDefaultValue )
+ ,AsciiName( _pAsciiName )
+ ,ValueType( _rDefaultValue.getValueType() )
+ {
+ OSL_ENSURE( ValueType.getTypeClass() != ::com::sun::star::uno::TypeClass_VOID,
+ "AsciiPropertyValue::AsciiPropertyValue: NULL values not allowed here, use the other CTOR for this!" );
+ }
+ AsciiPropertyValue( const sal_Char* _pAsciiName, const ::com::sun::star::uno::Type& _rValeType )
+ :DefaultValue()
+ ,AsciiName( _pAsciiName )
+ ,ValueType( _rValeType )
+ {
+ OSL_ENSURE( ValueType.getTypeClass() != ::com::sun::star::uno::TypeClass_VOID,
+ "AsciiPropertyValue::AsciiPropertyValue: VOID property values not supported!" );
+ }
+};
+
+class ODatabaseContext;
+class OSharedConnectionManager;
+
+//============================================================
+//= VosMutexFacade
+//============================================================
+/** a class which provides an IMutex interface to an OSL-based mutex
+*/
+class VosMutexFacade : public ::vos::IMutex
+{
+public:
+ /** beware of life time: the mutex you pass here must live as least as long
+ as the VosMutexFacade instance lives.
+ */
+ VosMutexFacade( ::osl::Mutex& _rMutex );
+
+ // IMutex
+ virtual void SAL_CALL acquire();
+ virtual sal_Bool SAL_CALL tryToAcquire();
+ virtual void SAL_CALL release();
+
+private:
+ ::osl::Mutex& m_rMutex;
+};
+
+
+//============================================================
+//= ODatabaseModelImpl
+//============================================================
+typedef ::utl::SharedUNOComponent< ::com::sun::star::embed::XStorage > SharedStorage;
+
+class ODatabaseContext;
+class DocumentStorageAccess;
+class OSharedConnectionManager;
+class ODatabaseModelImpl :public ::rtl::IReference
+ ,public ::sfx2::IMacroDocumentAccess
+ ,public ::sfx2::IModifiableDocument
+{
+public:
+ enum ObjectType
+ {
+ E_FORM = 0,
+ E_REPORT = 1,
+ E_QUERY = 2,
+ E_TABLE = 3
+ };
+
+ enum EmbeddedMacros
+ {
+ // the database document (storage) itself contains macros
+ eDocumentWideMacros,
+ // there are sub document( storage)s containing macros
+ eSubDocumentMacros,
+ // there are no known macro( storage)s
+ eNoMacros
+ };
+
+private:
+ OModuleClient m_aModuleClient;
+ ::com::sun::star::uno::WeakReference< ::com::sun::star::frame::XModel > m_xModel;
+ ::com::sun::star::uno::WeakReference< ::com::sun::star::sdbc::XDataSource > m_xDataSource;
+
+ DocumentStorageAccess* m_pStorageAccess;
+ ::comphelper::SharedMutex m_aMutex;
+ VosMutexFacade m_aMutexFacade;
+ ::std::vector< TContentPtr > m_aContainer; // one for each ObjectType
+ ::sfx2::DocumentMacroMode m_aMacroMode;
+ sal_Int16 m_nImposedMacroExecMode;
+
+ ::com::sun::star::uno::Reference< ::com::sun::star::script::XStorageBasedLibraryContainer > m_xBasicLibraries;
+ ::com::sun::star::uno::Reference< ::com::sun::star::script::XStorageBasedLibraryContainer > m_xDialogLibraries;
+
+ SharedStorage m_xDocumentStorage;
+ ::rtl::Reference< ::sfx2::DocumentStorageModifyListener > m_pStorageModifyListener;
+ ODatabaseContext* m_pDBContext;
+ DocumentEventsData m_aDocumentEvents;
+
+ ::comphelper::NamedValueCollection m_aMediaDescriptor;
+ /// the URL the document was loaded from
+ ::rtl::OUString m_sDocFileLocation;
+
+ oslInterlockedCount m_refCount;
+
+ /// do we have any object (forms/reports) which contains macros?
+ ::boost::optional< EmbeddedMacros > m_aEmbeddedMacros;
+
+ /// true if setting the Modified flag of the document is currently locked
+ bool m_bModificationLock;
+
+ /// true if and only if a database document existed previously (though meanwhile disposed), and was already initialized
+ bool m_bDocumentInitialized;
+
+ /** the URL which the document should report as it's URL
+
+ This might differ from ->m_sDocFileLocation in case the document was loaded
+ as part of a crash recovery process. In this case, ->m_sDocFileLocation points to
+ the temporary file where the DB had been saved to, after a crash.
+ ->m_sDocumentURL then is the URL of the document which actually had
+ been recovered.
+ */
+ ::rtl::OUString m_sDocumentURL;
+
+public:
+ OWeakConnectionArray m_aConnections;
+ const ::comphelper::ComponentContext m_aContext;
+
+public:
+ ::com::sun::star::uno::WeakReference< ::com::sun::star::container::XNameAccess > m_xCommandDefinitions;
+ ::com::sun::star::uno::WeakReference< ::com::sun::star::container::XNameAccess > m_xTableDefinitions;
+
+ ::com::sun::star::uno::Reference< ::com::sun::star::util::XNumberFormatsSupplier >
+ m_xNumberFormatsSupplier;
+ ::rtl::OUString m_sConnectURL;
+ ::rtl::OUString m_sName; // transient, our creator has to tell us the title
+ ::rtl::OUString m_sUser;
+ ::rtl::OUString m_aPassword; // transient !
+ ::rtl::OUString m_sFailedPassword;
+ ::com::sun::star::uno::Sequence< ::com::sun::star::beans::PropertyValue>
+ m_aLayoutInformation;
+ sal_Int32 m_nLoginTimeout;
+ sal_Bool m_bReadOnly : 1;
+ sal_Bool m_bPasswordRequired : 1;
+ sal_Bool m_bSuppressVersionColumns : 1;
+ sal_Bool m_bModified : 1;
+ sal_Bool m_bDocumentReadOnly : 1;
+ ::com::sun::star::uno::Reference< ::com::sun::star::beans::XPropertyAccess >
+ m_xSettings;
+ ::com::sun::star::uno::Sequence< ::rtl::OUString > m_aTableFilter;
+ ::com::sun::star::uno::Sequence< ::rtl::OUString > m_aTableTypeFilter;
+ OSharedConnectionManager* m_pSharedConnectionManager;
+ ::com::sun::star::uno::Reference< ::com::sun::star::lang::XEventListener >
+ m_xSharedConnectionManager;
+ sal_uInt16 m_nControllerLockCount;
+
+ void reset();
+
+ /** determines whether the database document has an embedded data storage
+ */
+ inline bool isEmbeddedDatabase() const { return ( m_sConnectURL.compareToAscii( "sdbc:embedded:", 14 ) == 0 ); }
+
+ /** stores the embedded storage ("database")
+
+ @param _bPreventRootCommits
+ Normally, committing the embedded storage results in also commiting the root storage
+ - this is an automatism for data safety reasons.
+ If you pass <TRUE/> here, committing the root storage is prevented for this particular
+ call.
+ @return <TRUE/> if the storage could be commited, otherwise <FALSE/>
+ */
+ bool commitEmbeddedStorage( bool _bPreventRootCommits = false );
+
+ /// commits all sub storages
+ void commitStorages()
+ SAL_THROW(( ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException ));
+
+ ODatabaseModelImpl(
+ const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory >& _rxFactory,
+ ODatabaseContext& _pDBContext
+ );
+ virtual ~ODatabaseModelImpl();
+
+ ODatabaseModelImpl(
+ const ::rtl::OUString& _rRegistrationName,
+ const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory >& _rxFactory,
+ ODatabaseContext& _rDBContext
+ );
+
+ // XEventListener
+ void SAL_CALL disposing( const ::com::sun::star::lang::EventObject& Source ) throw(::com::sun::star::uno::RuntimeException);
+
+ void setModified( sal_Bool bModified );
+
+ void dispose();
+
+ inline ::rtl::OUString getURL() const { return m_sDocumentURL; }
+ inline ::rtl::OUString getDocFileLocation() const { return m_sDocFileLocation; }
+
+ ::com::sun::star::uno::Reference< ::com::sun::star::embed::XStorage >
+ getStorage(
+ const ObjectType _eType, const sal_Int32 _nDesiredMode = ::com::sun::star::embed::ElementModes::READWRITE );
+
+// helper
+ const ::com::sun::star::uno::Reference< ::com::sun::star::util::XNumberFormatsSupplier >&
+ getNumberFormatsSupplier();
+
+ DocumentEventsData&
+ getDocumentEvents() { return m_aDocumentEvents; }
+
+ const ::comphelper::NamedValueCollection&
+ getMediaDescriptor() const { return m_aMediaDescriptor; }
+
+ void setResource(
+ const ::rtl::OUString& _rURL,
+ const ::com::sun::star::uno::Sequence< ::com::sun::star::beans::PropertyValue >& _rArgs
+ );
+ void setDocFileLocation(
+ const ::rtl::OUString& i_rLoadedFrom
+ );
+
+ static ::comphelper::NamedValueCollection
+ stripLoadArguments( const ::comphelper::NamedValueCollection& _rArguments );
+
+// other stuff
+ void flushTables();
+
+ // disposes all elements in m_aStorages, and clears it
+ void disposeStorages() SAL_THROW(());
+
+ /// creates a ->com::sun::star::embed::StorageFactory
+ ::com::sun::star::uno::Reference< ::com::sun::star::lang::XSingleServiceFactory >
+ createStorageFactory() const;
+
+ /// commits our storage
+ void commitRootStorage();
+
+ /// commits a given storage if it's not readonly, ignoring (but asserting) all errors
+ static bool commitStorageIfWriteable_ignoreErrors(
+ const ::com::sun::star::uno::Reference< ::com::sun::star::embed::XStorage >& _rxStorage
+ )
+ SAL_THROW(());
+
+ void clearConnections();
+
+ ::com::sun::star::uno::Reference< ::com::sun::star::embed::XStorage > getOrCreateRootStorage();
+ inline ::com::sun::star::uno::Reference< ::com::sun::star::embed::XStorage > getRootStorage() const { return m_xDocumentStorage.getTyped(); }
+ inline void resetRootStroage() { impl_switchToStorage_throw( NULL ); }
+
+ /** returns the data source. If it doesn't exist it will be created
+ */
+ ::com::sun::star::uno::Reference< ::com::sun::star::sdbc::XDataSource> getOrCreateDataSource();
+
+ /** returns the model, if there already exists one
+ */
+ ::com::sun::star::uno::Reference< ::com::sun::star::frame::XModel > getModel_noCreate() const;
+
+ /** returns a new ->ODatabaseDocument
+
+ @param _bInitializeIfNecessary
+ calls XLoadable::initNew on the newly created model, if necessary
+
+ @precond
+ No ->ODatabaseDocument exists so far
+
+ @seealso
+ getModel_noCreate
+ */
+ ::com::sun::star::uno::Reference< ::com::sun::star::frame::XModel > createNewModel_deliverOwnership( bool _bInitialize );
+
+ struct ResetModelAccess { friend class ODatabaseDocument; private: ResetModelAccess() { } };
+
+ /** resets the model to NULL
+
+ Only to be called when the model is being disposed
+ */
+ void modelIsDisposing( const bool _wasInitialized, ResetModelAccess );
+
+ bool hadInitializedDocument() const { return m_bDocumentInitialized; }
+
+ DocumentStorageAccess*
+ getDocumentStorageAccess();
+
+ ::com::sun::star::uno::Reference< ::com::sun::star::document::XDocumentSubStorageSupplier >
+ getDocumentSubStorageSupplier();
+
+ inline const ::comphelper::SharedMutex& getSharedMutex() const { return m_aMutex; }
+
+ /** @see osl_incrementInterlockedCount.
+ */
+ virtual oslInterlockedCount SAL_CALL acquire();
+
+ /** @see osl_decrementInterlockedCount.
+ */
+ virtual oslInterlockedCount SAL_CALL release();
+
+ /// returns a all known data source settings, including their default values
+ static const AsciiPropertyValue* getDefaultDataSourceSettings();
+
+ /** retrieves the requested container of objects (forms/reports/tables/queries)
+ */
+ TContentPtr& getObjectContainer( const ObjectType _eType );
+
+ /** returns the name of the storage which is used to stored objects of the given type, if applicable
+ */
+ static ::rtl::OUString
+ getObjectContainerStorageName( const ObjectType _eType );
+
+ /** revokes the data source registration at the database context
+ */
+ void revokeDataSource() const;
+
+ /** determines whether a given object storage contains macros
+ */
+ static bool objectHasMacros(
+ const ::com::sun::star::uno::Reference< ::com::sun::star::embed::XStorage >& _rxContainerStorage,
+ const ::rtl::OUString& _rPersistentName
+ );
+
+ /** determines which kind of embedded macros are present in the document
+ */
+ EmbeddedMacros determineEmbeddedMacros();
+
+ /** checks our document's macro execution mode, using the interaction handler as supplied with our
+ load arguments
+ */
+ bool checkMacrosOnLoading();
+
+ /** adjusts our document's macro execution mode, without using any UI, assuming the user
+ would reject execution of macros, if she would have been asked.
+
+ If checkMacrosOnLoading has been called before (and thus the macro execution mode
+ is already adjusted), then the current execution mode is simply returned.
+
+ @return
+ whether or not macro execution is allowed
+ */
+ bool adjustMacroMode_AutoReject();
+
+ /** resets our macro execute mode, so next time the checkMacrosOnLoading is called, it will
+ behave as if it has never been called before
+ */
+ void resetMacroExecutionMode();
+
+ /** ensures that ->m_xBasicLibraries resp. m_xDialogLibraries exists
+
+ @return
+ the requested library container. Is never <NULL/>.
+
+ @throws RuntimeException
+ if something does wrong, which indicates a server error in the installation
+ */
+ ::com::sun::star::uno::Reference< ::com::sun::star::script::XStorageBasedLibraryContainer >
+ getLibraryContainer( bool _bScript );
+
+ /** lets our library containers store themself into the given root storage
+ */
+ void storeLibraryContainersTo( const ::com::sun::star::uno::Reference< ::com::sun::star::embed::XStorage >& _rxToRootStorage );
+
+ /** rebases the document to the given storage
+
+ No actual committing, copying, saving, whatsoever happens. The storage is just remembered as the documents
+ new storage, nothing more.
+
+ @throws ::com::sun::star::lang::IllegalArgumentException
+ if the given storage is <NULL/>
+ @throws ::com::sun::star::lang::RuntimeException
+ if any of the invoked operations does so
+ */
+ ::com::sun::star::uno::Reference< ::com::sun::star::embed::XStorage >
+ switchToStorage(
+ const ::com::sun::star::uno::Reference< ::com::sun::star::embed::XStorage >& _rxNewRootStorage
+ );
+
+ /** returns the macro mode imposed by an external instance, which passed it to attachResource
+ */
+ sal_Int16 getImposedMacroExecMode() const
+ {
+ return m_nImposedMacroExecMode;
+ }
+ void setImposedMacroExecMode( const sal_Int16 _nMacroMode )
+ {
+ m_nImposedMacroExecMode = _nMacroMode;
+ }
+
+public:
+ // IMacroDocumentAccess overridables
+ virtual sal_Int16 getCurrentMacroExecMode() const;
+ virtual sal_Bool setCurrentMacroExecMode( sal_uInt16 );
+ virtual ::rtl::OUString getDocumentLocation() const;
+ virtual ::com::sun::star::uno::Reference< ::com::sun::star::embed::XStorage > getZipStorageToSign();
+ virtual sal_Bool documentStorageHasMacros() const;
+ virtual ::com::sun::star::uno::Reference< ::com::sun::star::document::XEmbeddedScripts > getEmbeddedDocumentScripts() const;
+ virtual sal_Int16 getScriptingSignatureState();
+ virtual sal_Bool hasTrustedScriptingSignature( sal_Bool bAllowUIToAddAuthor );
+ virtual void showBrokenSignatureWarning( const ::com::sun::star::uno::Reference< ::com::sun::star::task::XInteractionHandler >& _rxInteraction ) const;
+
+ // IModifiableDocument
+ virtual void storageIsModified();
+
+ // don't use directly, use the ModifyLock class instead
+ void lockModify() { m_bModificationLock = true; }
+ void unlockModify() { m_bModificationLock = false; }
+ bool isModifyLocked() const { return m_bModificationLock; }
+
+private:
+ void impl_construct_nothrow();
+ ::com::sun::star::uno::Reference< ::com::sun::star::embed::XStorage >
+ impl_switchToStorage_throw( const ::com::sun::star::uno::Reference< ::com::sun::star::embed::XStorage >& _rxNewRootStorage );
+
+ /** switches to the given document URL, which denotes the logical URL of the document, not necessariy the
+ URL where the doc was loaded/recovered from
+ */
+ void impl_switchToLogicalURL(
+ const ::rtl::OUString& i_rDocumentURL
+ );
+
+};
+
+/** a small base class for UNO components whose functionality depends on a ODatabaseModelImpl
+*/
+class ModelDependentComponent
+{
+protected:
+ ::rtl::Reference< ODatabaseModelImpl > m_pImpl;
+ mutable ::comphelper::SharedMutex m_aMutex;
+
+protected:
+ ModelDependentComponent( const ::rtl::Reference< ODatabaseModelImpl >& _model );
+ virtual ~ModelDependentComponent();
+
+ /** returns the component itself
+ */
+ virtual ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface > getThis() const = 0;
+
+ inline ::osl::Mutex& getMutex() const
+ {
+ return m_aMutex;
+ }
+
+public:
+ struct GuardAccess { friend class ModelMethodGuard; private: GuardAccess() { } };
+
+ /** returns the mutex used for thread safety
+
+ @throws ::com::sun::star::lang::DisposedException
+ if m_pImpl is <NULL/>. Usually, you will set this member in your derived
+ component's <code>dispose</code> method to <NULL/>.
+ */
+ inline ::osl::Mutex& getMutex( GuardAccess ) const
+ {
+ return getMutex();
+ }
+ inline ::rtl::Reference< ODatabaseModelImpl > getImpl( GuardAccess )
+ {
+ return m_pImpl;
+ }
+
+ /// checks whether the component is already disposed, throws a DisposedException if so
+ inline void checkDisposed() const
+ {
+ if ( !m_pImpl.is() )
+ throw ::com::sun::star::lang::DisposedException( ::rtl::OUString::createFromAscii( "Component is already disposed." ), getThis() );
+ }
+
+ inline void lockModify()
+ {
+ m_pImpl->lockModify();
+ }
+
+ inline void unlockModify()
+ {
+ m_pImpl->unlockModify();
+ }
+};
+
+class ModifyLock
+{
+public:
+ ModifyLock( ModelDependentComponent& _component )
+ :m_rComponent( _component )
+ {
+ m_rComponent.lockModify();
+ }
+
+ ~ModifyLock()
+ {
+ m_rComponent.unlockModify();
+ }
+
+private:
+ ModelDependentComponent& m_rComponent;
+};
+
+/** a guard for public methods of objects dependent on a ODatabaseModelImpl instance
+
+ Just put this guard onto the stack at the beginning of your method. Don't bother yourself
+ with a MutexGuard, checks for being disposed, and the like.
+*/
+class ModelMethodGuard : public ::osl::ResettableMutexGuard
+{
+private:
+ typedef ::osl::ResettableMutexGuard BaseMutexGuard;
+
+public:
+ /** constructs the guard
+
+ @param _component
+ the component whose functionality depends on a ODatabaseModelImpl instance
+
+ @throws ::com::sun::star::lang::DisposedException
+ If the given component is already disposed
+ */
+ ModelMethodGuard( const ModelDependentComponent& _component )
+ :BaseMutexGuard( _component.getMutex( ModelDependentComponent::GuardAccess() ) )
+ {
+ _component.checkDisposed();
+ }
+
+ ~ModelMethodGuard()
+ {
+ }
+};
+
+//........................................................................
+} // namespace dbaccess
+//........................................................................
+
+#endif // _DBA_COREDATAACCESS_DATALINK_HXX_
+