Examples of org.apache.wiki.attachment.AttachmentManager

org.apache.wiki.attachment.AttachmentManager
Provides facilities for handling attachments. All attachment handling goes through this class.
The AttachmentManager provides a facade towards the current WikiAttachmentProvider that is in use. It is created by the WikiEngine as a singleton object, and can be requested through the WikiEngine. @since 1.9.28

    {
        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

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    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;
                }
            }
        }

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            target = null; // not a valid value so ignore
        }


        try
        {
            AttachmentManager mgr = engine.getAttachmentManager();
            Attachment        att = mgr.getAttachmentInfo( context, src );


            if( att != null )
            {
                src = context.getURL( WikiContext.ATTACH, att.getName() );
            }

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        checkPermissions( page, username, password, "upload" );


        String name = (String) content.get( "name" );
        byte[] data = (byte[]) content.get( "bits" );


        AttachmentManager attmgr = engine.getAttachmentManager();


        try
        {
            Attachment att = new Attachment( engine, blogid, name );
            att.setAuthor( username );
            attmgr.storeAttachment( att, new ByteArrayInputStream( data ) );


            url = engine.getURL( WikiContext.ATTACH, att.getName(), null, true );
        }
        catch( Exception e )
        {

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    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;
                }
            }
        }

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    {
        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

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     *  
     *  @return the content of the Attachment as a String.
     */
    protected String getAttachmentContent( String attachmentName, int version )
    {
        AttachmentManager mgr = m_engine.getAttachmentManager();


        try
        {
            Attachment att = mgr.getAttachmentInfo( attachmentName, version );
            //FIXME: Find out why sometimes att is null
            if(att != null)
            {
                return getAttachmentContent( att );
            }

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     * FIXME This is a very simple implementation of some text-based attachment, mainly used for testing.
     * This should be replaced /moved to Attachment search providers or some other 'pluggable' wat to search attachments
     */
    protected String getAttachmentContent( Attachment att )
    {
        AttachmentManager mgr = m_engine.getAttachmentManager();
        //FIXME: Add attachment plugin structure


        String filename = att.getFileName();


        boolean searchSuffix = false;
        for( String suffix : SEARCHABLE_FILE_SUFFIXES )
        {
            if( filename.endsWith( suffix ) )
            {
                searchSuffix = true;
            }
        }


        String out = null;
        if( searchSuffix )
        {
            InputStream attStream = null;
            StringWriter sout = new StringWriter();
            
            try
            {
                attStream = mgr.getAttachmentStream( att );
                FileUtil.copyContents( new InputStreamReader(attStream), sout );
                out = sout.toString();
            }
            catch (ProviderException e)
            {

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        return m_currentElement;
    }


    private String findAttachment( String linktext )
    {
        AttachmentManager mgr = m_engine.getAttachmentManager();
        Attachment att = null;


        try
        {
            att = mgr.getAttachmentInfo( m_context, linktext );
        }
        catch( ProviderException e )
        {
            log.warn("Finding attachments failed: ",e);
            return null;

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     */
    public void testAttachmentRefs()
        throws Exception
    {
        ReferenceManager refMgr = m_engine.getReferenceManager();
        AttachmentManager attMgr = m_engine.getAttachmentManager();
        
        m_engine.saveText( NAME1, "fooBar");


        Attachment att = new Attachment( m_engine, NAME1, "TestAtt.txt" );
        att.setAuthor( "FirstPost" );
        attMgr.storeAttachment( att, m_engine.makeAttachmentFile() );


        try
        {    
            // and check post-conditions        
            Collection c = refMgr.findUncreated();

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