Examples with ProviderException org.apache.wiki.api.exceptions.ProviderException used on opensource projects

Example 36 with ProviderException

use of org.apache.wiki.api.exceptions.ProviderException in project jspwiki by apache.

the class AttachmentsIteratorTag method doStartTag.

/**
 *  {@inheritDoc}
 */
@Override
public final int doStartTag() {
    m_wikiContext = (WikiContext) pageContext.getAttribute(WikiTagBase.ATTR_CONTEXT, PageContext.REQUEST_SCOPE);
    WikiEngine engine = m_wikiContext.getEngine();
    AttachmentManager mgr = engine.getAttachmentManager();
    WikiPage page;
    page = m_wikiContext.getPage();
    if (!mgr.attachmentsEnabled()) {
        return SKIP_BODY;
    }
    try {
        if (page != null && engine.pageExists(page)) {
            Collection atts = mgr.listAttachments(page);
            if (atts == null) {
                log.debug("No attachments to display.");
                // There are no attachments included
                return SKIP_BODY;
            }
            m_iterator = atts.iterator();
            if (m_iterator.hasNext()) {
                Attachment att = (Attachment) m_iterator.next();
                WikiContext context = (WikiContext) m_wikiContext.clone();
                context.setPage(att);
                pageContext.setAttribute(WikiTagBase.ATTR_CONTEXT, context, PageContext.REQUEST_SCOPE);
                pageContext.setAttribute(getId(), att);
            } else {
                return SKIP_BODY;
            }
        } else {
            return SKIP_BODY;
        }
        return EVAL_BODY_BUFFERED;
    } catch (ProviderException e) {
        log.fatal("Provider failed while trying to iterator through history", e);
    // FIXME: THrow something.
    }
    return SKIP_BODY;
}

Example 37 with ProviderException

use of org.apache.wiki.api.exceptions.ProviderException in project jspwiki by apache.

the class VersioningFileProvider method deleteVersion.

/**
 *  {@inheritDoc}
 *
 *  Deleting versions has never really worked,
 *  JSPWiki assumes that version histories are "not gappy".
 *  Using deleteVersion() is definitely not recommended.
 */
public void deleteVersion(String page, int version) throws ProviderException {
    File dir = findOldPageDir(page);
    int latest = findLatestVersion(page);
    if (version == WikiPageProvider.LATEST_VERSION || version == latest || (version == 1 && latest == -1)) {
        // 
        try {
            Properties props = getPageProperties(page);
            props.remove(((latest > 0) ? latest : 1) + ".author");
            putPageProperties(page, props);
        } catch (IOException e) {
            log.error("Unable to modify page properties", e);
            throw new ProviderException("Could not modify page properties: " + e.getMessage());
        }
        // We can let the FileSystemProvider take care
        // of the actual deletion
        super.deleteVersion(page, WikiPageProvider.LATEST_VERSION);
        // 
        // Copy the old file to the new location
        // 
        latest = findLatestVersion(page);
        File pageDir = findOldPageDir(page);
        File previousFile = new File(pageDir, Integer.toString(latest) + FILE_EXT);
        InputStream in = null;
        OutputStream out = null;
        try {
            if (previousFile.exists()) {
                in = new BufferedInputStream(new FileInputStream(previousFile));
                File pageFile = findPage(page);
                out = new BufferedOutputStream(new FileOutputStream(pageFile));
                FileUtil.copyContents(in, out);
                // 
                // We need also to set the date, since we rely on this.
                // 
                pageFile.setLastModified(previousFile.lastModified());
            }
        } catch (IOException e) {
            log.fatal("Something wrong with the page directory - you may have just lost data!", e);
        } finally {
            IOUtils.closeQuietly(in);
            IOUtils.closeQuietly(out);
        }
        return;
    }
    File pageFile = new File(dir, "" + version + FILE_EXT);
    if (pageFile.exists()) {
        if (!pageFile.delete()) {
            log.error("Unable to delete page.");
        }
    } else {
        throw new NoSuchVersionException("Page " + page + ", version=" + version);
    }
}

Example 38 with ProviderException

use of org.apache.wiki.api.exceptions.ProviderException in project jspwiki by apache.

the class VersioningFileProvider method readFile.

// FIXME: Should this really be here?
private String readFile(File pagedata) throws ProviderException {
    String result = null;
    InputStream in = null;
    if (pagedata.exists()) {
        if (pagedata.canRead()) {
            try {
                in = new FileInputStream(pagedata);
                result = FileUtil.readContents(in, m_encoding);
            } catch (IOException e) {
                log.error("Failed to read", e);
                throw new ProviderException("I/O error: " + e.getMessage());
            } finally {
                IOUtils.closeQuietly(in);
            }
        } else {
            log.warn("Failed to read page from '" + pagedata.getAbsolutePath() + "', possibly a permissions problem");
            throw new ProviderException("I cannot read the requested page.");
        }
    } else {
        // This is okay.
        // FIXME: is it?
        log.info("New page");
    }
    return result;
}

Example 39 with ProviderException

use of org.apache.wiki.api.exceptions.ProviderException in project jspwiki by apache.

the class HasAttachmentsTag method doWikiStartTag.

public final int doWikiStartTag() throws IOException {
    WikiEngine engine = m_wikiContext.getEngine();
    WikiPage page = m_wikiContext.getPage();
    AttachmentManager mgr = engine.getAttachmentManager();
    try {
        if (page != null && engine.pageExists(page) && mgr.attachmentsEnabled()) {
            if (mgr.hasAttachments(page)) {
                return EVAL_BODY_INCLUDE;
            }
        }
    } catch (ProviderException e) {
        log.fatal("Provider failed while trying to check for attachements", e);
    // FIXME: THrow something.
    }
    return SKIP_BODY;
}

Example 40 with ProviderException

use of org.apache.wiki.api.exceptions.ProviderException in project jspwiki by apache.

the class AttachmentManager method storeAttachment.

/**
 *  Stores an attachment directly from a stream.
 *  If the attachment did not exist previously, this method
 *  will create it.  If it did exist, it stores a new version.
 *
 *  @param att Attachment to store this under.
 *  @param in  InputStream from which the attachment contents will be read.
 *
 *  @throws IOException If writing the attachment failed.
 *  @throws ProviderException If something else went wrong.
 */
public void storeAttachment(Attachment att, InputStream in) throws IOException, ProviderException {
    if (m_provider == null) {
        return;
    }
    // 
    if (!m_engine.getPageManager().pageExists(att.getParentName())) {
        // the caller should catch the exception and use the exception text as an i18n key
        throw new ProviderException("attach.parent.not.exist");
    }
    m_provider.putAttachmentData(att, in);
    m_engine.getReferenceManager().updateReferences(att.getName(), new Vector<String>());
    WikiPage parent = new WikiPage(m_engine, att.getParentName());
    m_engine.updateReferences(parent);
    m_engine.getSearchManager().reindexPage(att);
}