Package org.apache.jackrabbit.core.state.ISMLocking

Examples of org.apache.jackrabbit.core.state.ISMLocking.ReadLock

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    public VersionHistoryInfo getVersionHistory(Session session, NodeState node,
                                                NodeId copiedFrom)
            throws RepositoryException {
        VersionHistoryInfo info = null;

        ReadLock lock = acquireReadLock();
        try {
            String uuid = node.getNodeId().toString();
            Name name = getName(uuid);

            NodeStateEx parent = getParentNode(getHistoryRoot(), uuid, null);
            if (parent != null && parent.hasNode(name)) {
                NodeStateEx history = parent.getNode(name, 1);
                Name root = NameConstants.JCR_ROOTVERSION;
                info = new VersionHistoryInfo(
                        history.getNodeId(),
                        history.getState().getChildNodeEntry(root, 1).getId());
            }
        } finally {
            lock.release();
        }

        if (info == null) {
            info = createVersionHistory(session, node, copiedFrom);
        }
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    /**
     * {@inheritDoc}
     */
    public List<InternalVersion> getSuccessors() {
        ReadLock lock = vMgr.acquireReadLock();
        try {
            InternalValue[] values =
                node.getPropertyValues(NameConstants.JCR_SUCCESSORS);
            if (values != null) {
                List<InternalVersion> versions =
                    new ArrayList<InternalVersion>(values.length);
                for (InternalValue value : values) {
                    InternalVersion version =
                        versionHistory.getVersion(value.getNodeId());
                    if (version != null) {
                        versions.add(version);
                    } else {
                        // Can happen with a corrupted repository (JCR-2655)
                        log.warn("Missing successor {}", value.getNodeId());
                    }
                }
                return versions;
            } else {
                return Collections.emptyList();
            }
        } finally {
            lock.release();
        }
    }
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     * contains a reference to an item with id <code>I</code>. </i>
     *
     * @throws InterruptedException on interruption; this will err the test
     */
    public void testReadBlocksWrite() throws InterruptedException {
        ReadLock rLock = locking.acquireReadLock(state.getId());
        for (ChangeLog changeLog : logs) {
            verifyBlocked(startWriterThread(locking, changeLog));
        }
        rLock.release();
    }
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     */
    public void testDowngrade() throws InterruptedException {
        for (ChangeLog changeLog : logs) {
            WriteLock wLock = locking.acquireWriteLock(changeLog);
            verifyBlocked(startReaderThread(locking, state.getId()));
            ReadLock rLock = wLock.downgrade();
            verifyNotBlocked(startReaderThread(locking, state.getId()));
            rLock.release();
        }
    }
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public class DefaultISMLockingDeadlockTest extends JUnitTest {

    public void test() throws InterruptedException {
        final ISMLocking lock = new DefaultISMLocking();
        WriteLock w1 = lock.acquireWriteLock(null);
        ReadLock r1 = w1.downgrade();
        final InterruptedException[] ex = new InterruptedException[1];
        Thread thread = new Thread() {
            public void run() {
                try {
                    lock.acquireWriteLock(null).release();
                } catch (InterruptedException e) {
                    ex[0] = e;
                }
            }
        };
        thread.start();
        Thread.sleep(100);
        lock.acquireReadLock(null).release();
        r1.release();
        thread.join();
        if (ex[0] != null) {
            throw ex[0];
        }
    }
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     * contains a reference to an item with id <code>I</code>. </i>
     *
     * @throws InterruptedException on interruption; this will err the test
     */
    public void testReadBlocksWrite() throws InterruptedException {
        ReadLock rLock = locking.acquireReadLock(state.getId());
        for (ChangeLog changeLog : logs) {
            verifyBlocked(startWriterThread(locking, changeLog));
        }
        rLock.release();
    }
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     */
    public void testDowngrade() throws InterruptedException {
        for (ChangeLog changeLog : logs) {
            WriteLock wLock = locking.acquireWriteLock(changeLog);
            verifyBlocked(startReaderThread(locking, state.getId()));
            ReadLock rLock = wLock.downgrade();
            verifyNotBlocked(startReaderThread(locking, state.getId()));
            rLock.release();
        }
    }
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     * @return the new copy
     * @throws RepositoryException if an error occurs
     */
    private InternalVersionHistoryImpl makeLocalCopy(InternalVersionHistoryImpl history)
            throws RepositoryException {
        ReadLock lock = acquireReadLock();
        try {
            NodeState state = (NodeState) stateMgr.getItemState(history.getId());
            NodeStateEx stateEx = new NodeStateEx(stateMgr, ntReg, state, null);
            return new InternalVersionHistoryImpl(this, stateEx);
        } catch (ItemStateException e) {
            throw new RepositoryException("Unable to make local copy", e);
        } finally {
            lock.release();
        }
    }
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     * @return the new copy
     * @throws RepositoryException if an error occurs
     */
    private InternalActivityImpl makeLocalCopy(InternalActivityImpl act)
            throws RepositoryException {
        ReadLock lock = acquireReadLock();
        try {
            NodeState state = (NodeState) stateMgr.getItemState(act.getId());
            NodeStateEx stateEx = new NodeStateEx(stateMgr, ntReg, state, null);
            return new InternalActivityImpl(this, stateEx);
        } catch (ItemStateException e) {
            throw new RepositoryException("Unable to make local copy", e);
        } finally {
            lock.release();
        }
    }
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    /**
     * {@inheritDoc}
     */
    public boolean hasItem(NodeId id) {
        ReadLock lock = acquireReadLock();
        try {
            return stateMgr.hasItemState(id);
        } finally {
            lock.release();
        }
    }
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Related Classes of org.apache.jackrabbit.core.state.ISMLocking.ReadLock

  • org.apache.jackrabbit.core.state.AbstractISMLockingTest
  • org.apache.jackrabbit.core.state.DefaultISMLockingDeadlockTest
  • org.apache.jackrabbit.core.version.AbstractVersionManager
  • org.apache.jackrabbit.core.version.InternalVersionImpl
  • org.apache.jackrabbit.core.version.InternalVersionManagerBase
  • org.apache.jackrabbit.core.version.InternalVersionManagerImpl
  • org.apache.jackrabbit.core.version.InternalXAVersionManager
  • org.apache.jackrabbit.core.version.VersionManagerImpl
  • org.apache.jackrabbit.core.version.XAVersionManager
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