private FileAction doUpdate()

in vault-vlt/src/main/java/org/apache/jackrabbit/vault/vlt/VltFile.java [899:985]
74 lines of code
22 McCabe index (conditional complexity)

    private FileAction doUpdate(VaultFile remoteFile, boolean baseOnly)
            throws VltException {
        FileAction action;
        VltEntryInfo base;
        if (entry == null || entry.base() == null) {
            // new entry
            action = FileAction.ADDED;
            entry = parent.getEntries().update(getName(), remoteFile.getAggregatePath(), remoteFile.getRepoRelPath());
            base = entry.create(VltEntryInfo.Type.BASE);
            entry.put(base);
        } else {
            action = FileAction.UPDATED;
            base = entry.base();

            // quick check if modified
            if (!base.checkModified(remoteFile)) {
                return FileAction.VOID;
            }
        }
        long lastMod = remoteFile.lastModified();
        if (lastMod == 0) {
            lastMod = System.currentTimeMillis();
        }
        base.setDate(lastMod);

        if (remoteFile.isDirectory()) {
            if (!baseOnly) {
                // ensure controlled
                // todo: this does not belong here
                if (entry.work() != null) {
                    action = FileAction.VOID;
                } else {
                    entry.put(base.copyAs(VltEntryInfo.Type.WORK));
                }
                file.mkdir();
                file.setLastModified(base.getDate());
                VltDirectory dir = new VltDirectory(parent.getContext(), file);
                if (!dir.isControlled()) {
                    dir.control(remoteFile.getPath(), remoteFile.getControllingAggregate().getPath());
                    action = FileAction.ADDED;
                }
            }
        } else {
            MetaFile baseFile = getBaseFile(true);

            // copy file
            byte[] lineFeed = MimeTypes.isBinary(remoteFile.getContentType())
                    ? null
                    : LineOutputStream.LS_NATIVE;
            VaultFileCopy copy;
            try {
                File temp = baseFile.openTempFile();
                copy = VaultFileCopy.copy(remoteFile, temp, lineFeed);
                baseFile.closeTempFile(false);
            } catch (IOException e) {
                throw exception("Error while copying files.", e);
            }
            // if md5 is equal, no update
            if (copy.getMd5().equals(base.getMd5())) {
                action = FileAction.VOID;
            }

            if (action == FileAction.VOID
                    && (base.getContentType() != null || remoteFile.getContentType() != null)
                    && (base.getContentType() == null || !base.getContentType().equals(remoteFile.getContentType()))) {
                action = FileAction.UPDATED;
            }

            // update infos
            VltEntryInfo work = entry.work();
            base.setContentType(remoteFile.getContentType());
            base.setSize(copy.getLength());
            base.setMd5(copy.getMd5());
            if (!baseOnly) {
                // only copy if not equal
                if (work == null || !work.getMd5().equals(copy.getMd5()) || !getFile().exists()) {
                    try {
                        baseFile.copyTo(getFile(), true);
                        entry.put(base.copyAs(VltEntryInfo.Type.WORK));
                    } catch (IOException e) {
                        throw exception("Error while copying files.", e);
                    }
                }
            }
        }
        return action;
    }