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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include <com/sun/star/uno/Reference.hxx>
21 : #include <com/sun/star/embed/ElementModes.hpp>
22 : #include <com/sun/star/embed/XHierarchicalStorageAccess2.hpp>
23 : #include <com/sun/star/embed/XTransactedObject.hpp>
24 : #include <com/sun/star/embed/XTransactionBroadcaster.hpp>
25 : #include <com/sun/star/lang/WrappedTargetRuntimeException.hpp>
26 :
27 : #include "ohierarchyholder.hxx"
28 :
29 : using namespace ::com::sun::star;
30 :
31 : //===============================================
32 : // OHierarchyHolder_Impl
33 : //===============================================
34 :
35 : //-----------------------------------------------
36 1204 : uno::Reference< embed::XExtendedStorageStream > OHierarchyHolder_Impl::GetStreamHierarchically( sal_Int32 nStorageMode, OStringList_Impl& aListPath, sal_Int32 nStreamMode, const ::comphelper::SequenceAsHashMap& aEncryptionData )
37 : {
38 1204 : uno::Reference< embed::XStorage > xOwnStor( m_xWeakOwnStorage.get(), uno::UNO_QUERY_THROW );
39 :
40 1204 : if ( !( nStorageMode & embed::ElementModes::WRITE ) && ( nStreamMode & embed::ElementModes::WRITE ) )
41 0 : throw io::IOException();
42 :
43 : uno::Reference< embed::XExtendedStorageStream > xResult =
44 1204 : m_xChild->GetStreamHierarchically( nStorageMode, aListPath, nStreamMode, aEncryptionData );
45 1204 : if ( !xResult.is() )
46 0 : throw uno::RuntimeException();
47 :
48 1204 : return xResult;
49 : }
50 :
51 : //-----------------------------------------------
52 0 : void OHierarchyHolder_Impl::RemoveStreamHierarchically( OStringList_Impl& aListPath )
53 : {
54 0 : uno::Reference< embed::XStorage > xOwnStor( m_xWeakOwnStorage.get(), uno::UNO_QUERY_THROW );
55 :
56 0 : m_xChild->RemoveStreamHierarchically( aListPath );
57 0 : }
58 :
59 : //-----------------------------------------------
60 : // static
61 2408 : OStringList_Impl OHierarchyHolder_Impl::GetListPathFromString( const OUString& aPath )
62 : {
63 2408 : OStringList_Impl aResult;
64 2408 : sal_Int32 nIndex = 0;
65 3708 : do
66 : {
67 3708 : OUString aName = aPath.getToken( 0, '/', nIndex );
68 3708 : if ( aName.isEmpty() )
69 0 : throw lang::IllegalArgumentException();
70 :
71 3708 : aResult.push_back( aName );
72 : }
73 3708 : while ( nIndex >= 0 );
74 :
75 2408 : return aResult;
76 : }
77 :
78 : //===============================================
79 : // OHierarchyElement_Impl
80 : //===============================================
81 :
82 : //-----------------------------------------------
83 2504 : uno::Reference< embed::XExtendedStorageStream > OHierarchyElement_Impl::GetStreamHierarchically( sal_Int32 nStorageMode, OStringList_Impl& aListPath, sal_Int32 nStreamMode, const ::comphelper::SequenceAsHashMap& aEncryptionData )
84 : {
85 2504 : ::osl::MutexGuard aGuard( m_aMutex );
86 :
87 2504 : if ( !( nStorageMode & embed::ElementModes::WRITE ) && ( nStreamMode & embed::ElementModes::WRITE ) )
88 0 : throw io::IOException();
89 :
90 2504 : if ( !aListPath.size() )
91 0 : throw uno::RuntimeException();
92 :
93 5008 : OUString aNextName = *(aListPath.begin());
94 2504 : aListPath.erase( aListPath.begin() );
95 :
96 2504 : uno::Reference< embed::XExtendedStorageStream > xResult;
97 :
98 5008 : uno::Reference< embed::XStorage > xOwnStor;
99 :
100 5355 : xOwnStor = m_xOwnStorage.is() ? m_xOwnStorage
101 4661 : : uno::Reference< embed::XStorage >( m_xWeakOwnStorage.get(), uno::UNO_QUERY );
102 2504 : if ( !xOwnStor.is() )
103 0 : throw uno::RuntimeException();
104 :
105 2504 : if ( !aListPath.size() )
106 : {
107 1204 : if ( !aEncryptionData.size() )
108 : {
109 1204 : uno::Reference< embed::XHierarchicalStorageAccess > xHStorage( xOwnStor, uno::UNO_QUERY_THROW );
110 1204 : xResult = xHStorage->openStreamElementByHierarchicalName( aNextName, nStreamMode );
111 : }
112 : else
113 : {
114 0 : uno::Reference< embed::XHierarchicalStorageAccess2 > xHStorage( xOwnStor, uno::UNO_QUERY_THROW );
115 0 : xResult = xHStorage->openEncryptedStreamByHierarchicalName( aNextName, nStreamMode, aEncryptionData.getAsConstNamedValueList() );
116 : }
117 :
118 1204 : uno::Reference< embed::XTransactedObject > xTransact( xResult, uno::UNO_QUERY );
119 1204 : if ( xTransact.is() )
120 : {
121 : // the existance of the transacted object means that the stream is opened for writing also
122 : // so the whole chain must be commited
123 0 : uno::Reference< embed::XTransactionBroadcaster > xTrBroadcast( xTransact, uno::UNO_QUERY_THROW );
124 0 : xTrBroadcast->addTransactionListener( static_cast< embed::XTransactionListener* >( this ) );
125 : }
126 : else
127 : {
128 1204 : uno::Reference< lang::XComponent > xStreamComp( xResult, uno::UNO_QUERY_THROW );
129 1204 : xStreamComp->addEventListener( static_cast< lang::XEventListener* >( this ) );
130 : }
131 :
132 1204 : m_aOpenStreams.push_back( uno::WeakReference< embed::XExtendedStorageStream >( xResult ) );
133 : }
134 : else
135 : {
136 1300 : sal_Bool bNewElement = sal_False;
137 1300 : ::rtl::Reference< OHierarchyElement_Impl > aElement;
138 1300 : OHierarchyElementList_Impl::iterator aIter = m_aChildren.find( aNextName );
139 1300 : if ( aIter != m_aChildren.end() )
140 857 : aElement = aIter->second;
141 :
142 1300 : if ( !aElement.is() )
143 : {
144 443 : bNewElement = sal_True;
145 443 : uno::Reference< embed::XStorage > xChildStorage = xOwnStor->openStorageElement( aNextName, nStorageMode );
146 443 : if ( !xChildStorage.is() )
147 0 : throw uno::RuntimeException();
148 :
149 443 : aElement = new OHierarchyElement_Impl( NULL, xChildStorage );
150 : }
151 :
152 1300 : xResult = aElement->GetStreamHierarchically( nStorageMode, aListPath, nStreamMode, aEncryptionData );
153 1300 : if ( !xResult.is() )
154 0 : throw uno::RuntimeException();
155 :
156 1300 : if ( bNewElement )
157 : {
158 443 : m_aChildren[aNextName] = aElement;
159 443 : aElement->SetParent( this );
160 1300 : }
161 : }
162 :
163 : // the subelement was opened successfully, remember the storage to let it be locked
164 2504 : m_xOwnStorage = xOwnStor;
165 :
166 5008 : return xResult;
167 : }
168 :
169 : //-----------------------------------------------
170 0 : void OHierarchyElement_Impl::RemoveStreamHierarchically( OStringList_Impl& aListPath )
171 : {
172 0 : ::osl::MutexGuard aGuard( m_aMutex );
173 :
174 0 : if ( !aListPath.size() )
175 0 : throw uno::RuntimeException();
176 :
177 0 : OUString aNextName = *(aListPath.begin());
178 0 : aListPath.erase( aListPath.begin() );
179 :
180 0 : uno::Reference< embed::XExtendedStorageStream > xResult;
181 :
182 0 : uno::Reference< embed::XStorage > xOwnStor;
183 :
184 0 : xOwnStor = m_xOwnStorage.is() ? m_xOwnStorage
185 0 : : uno::Reference< embed::XStorage >( m_xWeakOwnStorage.get(), uno::UNO_QUERY );
186 0 : if ( !xOwnStor.is() )
187 0 : throw uno::RuntimeException();
188 :
189 0 : if ( !aListPath.size() )
190 : {
191 0 : xOwnStor->removeElement( aNextName );
192 : }
193 : else
194 : {
195 0 : ::rtl::Reference< OHierarchyElement_Impl > aElement;
196 0 : OHierarchyElementList_Impl::iterator aIter = m_aChildren.find( aNextName );
197 0 : if ( aIter != m_aChildren.end() )
198 0 : aElement = aIter->second;
199 :
200 0 : if ( !aElement.is() )
201 : {
202 0 : uno::Reference< embed::XStorage > xChildStorage = xOwnStor->openStorageElement( aNextName,
203 0 : embed::ElementModes::READWRITE );
204 0 : if ( !xChildStorage.is() )
205 0 : throw uno::RuntimeException();
206 :
207 0 : aElement = new OHierarchyElement_Impl( NULL, xChildStorage );
208 : }
209 :
210 0 : aElement->RemoveStreamHierarchically( aListPath );
211 : }
212 :
213 0 : uno::Reference< embed::XTransactedObject > xTransact( xOwnStor, uno::UNO_QUERY );
214 0 : if ( xTransact.is() )
215 0 : xTransact->commit();
216 :
217 0 : TestForClosing();
218 0 : }
219 :
220 : //-----------------------------------------------
221 0 : void OHierarchyElement_Impl::Commit()
222 : {
223 0 : ::rtl::Reference< OHierarchyElement_Impl > aLocker( this );
224 0 : ::rtl::Reference< OHierarchyElement_Impl > aParent;
225 0 : uno::Reference< embed::XStorage > xOwnStor;
226 :
227 : {
228 0 : ::osl::MutexGuard aGuard( m_aMutex );
229 0 : aParent = m_rParent;
230 0 : xOwnStor = m_xOwnStorage;
231 : }
232 :
233 0 : if ( xOwnStor.is() )
234 : {
235 0 : uno::Reference< embed::XTransactedObject > xTransact( xOwnStor, uno::UNO_QUERY_THROW );
236 0 : xTransact->commit();
237 0 : if ( aParent.is() )
238 0 : aParent->Commit();
239 0 : }
240 0 : }
241 :
242 : //-----------------------------------------------
243 1647 : void OHierarchyElement_Impl::TestForClosing()
244 : {
245 1647 : ::rtl::Reference< OHierarchyElement_Impl > aLocker( this );
246 : {
247 1647 : ::osl::MutexGuard aGuard( m_aMutex );
248 :
249 1647 : if ( !m_aOpenStreams.size() && !m_aChildren.size() )
250 : {
251 790 : if ( m_rParent.is() )
252 : {
253 : // only the root storage should not be disposed, other storages can be disposed
254 443 : if ( m_xOwnStorage.is() )
255 : {
256 : try
257 : {
258 443 : m_xOwnStorage->dispose();
259 : }
260 0 : catch( uno::Exception& )
261 : {}
262 : }
263 :
264 443 : m_rParent->RemoveElement( this );
265 : }
266 :
267 790 : m_xOwnStorage = uno::Reference< embed::XStorage >();
268 1647 : }
269 1647 : }
270 1647 : }
271 :
272 : //-----------------------------------------------
273 1204 : void SAL_CALL OHierarchyElement_Impl::disposing( const lang::EventObject& Source )
274 : throw ( uno::RuntimeException )
275 : {
276 1204 : uno::Sequence< embed::XStorage > aStoragesToCommit;
277 :
278 : try
279 : {
280 1204 : ::osl::ClearableMutexGuard aGuard( m_aMutex );
281 2408 : uno::Reference< embed::XExtendedStorageStream > xStream( Source.Source, uno::UNO_QUERY );
282 :
283 7548 : for ( OWeakStorRefList_Impl::iterator pStorageIter = m_aOpenStreams.begin();
284 6344 : pStorageIter != m_aOpenStreams.end(); )
285 : {
286 1968 : OWeakStorRefList_Impl::iterator pTmp = pStorageIter++;
287 1968 : if ( !pTmp->get().is() || pTmp->get() == xStream )
288 1204 : m_aOpenStreams.erase( pTmp );
289 : }
290 :
291 1204 : aGuard.clear();
292 :
293 2408 : TestForClosing();
294 : }
295 0 : catch( uno::Exception& )
296 : {
297 0 : throw uno::RuntimeException(); // no exception must happen here, usually an exception means disaster
298 1204 : }
299 1204 : }
300 :
301 : //-----------------------------------------------
302 443 : void OHierarchyElement_Impl::RemoveElement( const ::rtl::Reference< OHierarchyElement_Impl >& aRef )
303 : {
304 : {
305 443 : ::osl::MutexGuard aGuard( m_aMutex );
306 443 : OHierarchyElementList_Impl::iterator aIter = m_aChildren.begin();
307 443 : const OHierarchyElementList_Impl::const_iterator aEnd = m_aChildren.end();
308 1329 : while (aIter != aEnd)
309 : {
310 443 : if (aIter->second == aRef )
311 443 : aIter = m_aChildren.erase(aIter);
312 : else
313 0 : ++aIter;
314 443 : }
315 : }
316 :
317 443 : TestForClosing();
318 443 : }
319 :
320 : // XTransactionListener
321 : //-----------------------------------------------
322 0 : void SAL_CALL OHierarchyElement_Impl::preCommit( const ::com::sun::star::lang::EventObject& /*aEvent*/ )
323 : throw (::com::sun::star::uno::Exception, ::com::sun::star::uno::RuntimeException)
324 : {
325 0 : }
326 :
327 : //-----------------------------------------------
328 0 : void SAL_CALL OHierarchyElement_Impl::commited( const ::com::sun::star::lang::EventObject& /*aEvent*/ )
329 : throw (::com::sun::star::uno::RuntimeException)
330 : {
331 : try
332 : {
333 0 : Commit();
334 : }
335 0 : catch( const uno::Exception& e )
336 : {
337 : throw lang::WrappedTargetRuntimeException(
338 : "Can not commit storage sequence!",
339 : uno::Reference< uno::XInterface >(),
340 0 : uno::makeAny( e ) );
341 : }
342 0 : }
343 :
344 : //-----------------------------------------------
345 0 : void SAL_CALL OHierarchyElement_Impl::preRevert( const ::com::sun::star::lang::EventObject& /*aEvent*/ )
346 : throw (::com::sun::star::uno::Exception, ::com::sun::star::uno::RuntimeException)
347 : {
348 0 : }
349 :
350 : //-----------------------------------------------
351 0 : void SAL_CALL OHierarchyElement_Impl::reverted( const ::com::sun::star::lang::EventObject& /*aEvent*/ )
352 : throw (::com::sun::star::uno::RuntimeException)
353 : {
354 0 : }
355 :
356 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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