Examples of JspFragment

javax.servlet.jsp.tagext.JspFragment
Encapsulates a portion of JSP code in an object that can be invoked as many times as needed. JSP Fragments are defined using JSP syntax as the body of a tag for an invocation to a SimpleTag handler, or as the body of a <jsp:attribute> standard action specifying the value of an attribute that is declared as a fragment, or to be of type JspFragment in the TLD.
The definition of the JSP fragment must only contain template text and JSP action elements. In other words, it must not contain scriptlets or scriptlet expressions. At translation time, the container generates an implementation of the JspFragment abstract class capable of executing the defined fragment.
A tag handler can invoke the fragment zero or more times, or pass it along to other tags, before returning. To communicate values to/from a JSP fragment, tag handlers store/retrieve values in the JspContext associated with the fragment.
Note that tag library developers and page authors should not generate JspFragment implementations manually.
Implementation Note: It is not necessary to generate a separate class for each fragment. One possible implementation is to generate a single helper class for each page that implements JspFragment. Upon construction, a discriminator can be passed to select which fragment that instance will execute. @since 2.0
nsf.playground.jsp.JspFragment
JSP Fragment base class. This class provides the necessary execution methods. @author priand

Examples of javax.servlet.jsp.tagext.JspFragment

     * @throws IOException If something goes wrong.
     * @throws JspException If something goes wrong.
     */
    @Test
    public void testEvaluateWriter() throws JspException, IOException {
        JspFragment body = createMock(JspFragment.class);
        PageContext pageContext = createMock(PageContext.class);
        JspWriter writer = createMock(JspWriter.class);


        expect(pageContext.getOut()).andReturn(null);
        body.invoke(writer);


        replay(body, pageContext, writer);
        JspModelBody modelBody = new JspModelBody(body, pageContext);
        modelBody.evaluate(writer);
        verify(body, pageContext, writer);

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Examples of javax.servlet.jsp.tagext.JspFragment

     * @throws JspException If something goes wrong.
     */
    @Test(expected = IOException.class)
    public void testEvaluateWriterException() throws JspException, IOException {
        PageContext pageContext = createMock(PageContext.class);
        JspFragment body = createMock(JspFragment.class);
        JspWriter writer = createMock(JspWriter.class);


        expect(pageContext.getOut()).andReturn(null);
        body.invoke(writer);
        expectLastCall().andThrow(new JspException());


        replay(body, pageContext, writer);
        try {
            JspModelBody modelBody = new JspModelBody(body, pageContext);

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Examples of javax.servlet.jsp.tagext.JspFragment

        DataGridTagModel dgm = DataGridUtil.getDataGridTagModel(jspContext);
        if(dgm == null)
            throw new JspException(Bundle.getErrorString("DataGridTags_MissingDataGridModel"));


        if(dgm.getRenderState() == DataGridTagModel.RENDER_STATE_FOOTER) {
            JspFragment fragment = getJspBody();
            if(fragment != null) {


                StringWriter sw = new StringWriter();


                TableRenderer tableRenderer = dgm.getTableRenderer();
                assert tableRenderer != null;


                StyleModel styleModel = dgm.getStyleModel();
                assert styleModel != null;


                AbstractRenderAppender appender = new WriteRenderAppender(jspContext);


                if(dgm.isRenderRowGroups()) {
                    if(_tfootTag.styleClass == null)
                        _tfootTag.styleClass = styleModel.getTableFootClass();
                    tableRenderer.openTableFoot(_tfootTag, appender);
                }


                TrTag.State trState = null;
                if(_renderRow) {
                    trState = new TrTag.State();
                    trState.styleClass = styleModel.getFooterRowClass();
                    tableRenderer.openFooterRow(trState, appender);
                }


                fragment.invoke(sw);
                appender.append(sw.toString());


                if(_renderRow) {
                    assert trState != null;
                    tableRenderer.closeFooterRow(appender);

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Examples of javax.servlet.jsp.tagext.JspFragment

                trState = new TrTag.State();
                trState.styleClass = styleModel.getHeaderRowClass();
                tableRenderer.openHeaderRow(trState, appender);
            }


            JspFragment fragment = getJspBody();
            if(fragment != null) {
                StringWriter sw = new StringWriter();
                fragment.invoke(sw);
                appender.append(sw.toString());
            }


            if(_renderRow)
                tableRenderer.closeHeaderRow(appender);

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Examples of javax.servlet.jsp.tagext.JspFragment

        _dataGridTagModel.setStyleModel(styleModel);
        _dataGridTagModel.setTableRenderer(tableRenderer);
        _dataGridTagModel.setResourceProvider(resourceProvider);
        _dataGridTagModel.setRenderRowGroups(_renderRowGroups);


        JspFragment fragment = getJspBody();
        if(fragment != null) {
            String javascript = null;
            /* render any JavaScript needed to support framework features */
            if (_tableState.id != null) {
                javascript = renderNameAndId(request, _tableState, null);
            }


            boolean addedDataAccessProvider = false;
            try {
                InternalStringBuilder builder = new InternalStringBuilder(2048);
                AbstractRenderAppender appender = new StringBuilderRenderAppender(builder);


                /* todo: perf -- this doesn't need to happen when the data set is empty */
                DataAccessProviderStack.addDataAccessProvider(this, getJspContext());
                DataGridUtil.putDataGridTagModel(getJspContext(), _dataGridTagModel);
                addedDataAccessProvider = true;


                StringWriter sw = new StringWriter();
                /*
                   allow sub-tags to do work during START before rendering
                   this makes it possible to have tags out of order and to
                   have rendering work correctly
                 */
                /* todo: perf -- should you be able to turn this off for perf? */
                fragment.invoke(sw);


                /* todo: this needs to move into the DataGridTagModel */
                PagerModel pm = _dataGridTagModel.getState().getPagerModel();
                _dataGridTagModel.getDataSet().createWindow(pm.getRow(), pm.getPageSize());


                /* now that the model objects have been initialized, it's time to start rendering */
                _dataGridTagModel.changeRenderState(DataGridTagModel.RENDER_STATE_START);


                if(!_dataGridTagModel.isDisableDefaultPagerRendering())
                    _dataGridTagModel.renderPager(appender);


                _tableState.styleClass = styleModel.getTableClass();
                tableRenderer.openTable(_tableState, appender);


                /* render the caption */
                _dataGridTagModel.changeRenderState(DataGridTagModel.RENDER_STATE_CAPTION);
                sw = new StringWriter();
                fragment.invoke(sw);
                String caption = sw.toString();
                if(caption != null)
                    appender.append(caption);


                /* render the header */
                _dataGridTagModel.changeRenderState(DataGridTagModel.RENDER_STATE_HEADER);
                sw = new StringWriter();
                fragment.invoke(sw);
                String header = sw.toString();
                if(header != null)
                    appender.append(header);


                /* intermediate storage for the body and footer content
                   these are required by the HTML spec:
                       http://www.w3.org/TR/REC-html40/struct/tables.html#h-11.2.3
                   as when the row groups are used, they must be re-ordered so that
                   <tfoot> preceeds <tbody>
                 */


                String tbody = null;
                String tfoot = null;


                /* render the body */
                _dataGridTagModel.changeRenderState(DataGridTagModel.RENDER_STATE_GRID);
                sw = new StringWriter();
                fragment.invoke(sw);
                tbody = sw.toString();


                /* render the footer */
                _dataGridTagModel.changeRenderState(DataGridTagModel.RENDER_STATE_FOOTER);
                sw = new StringWriter();
                fragment.invoke(sw);
                String footer = sw.toString();
                String trimmed = footer.trim();
                if(footer != null && !trimmed.trim().equals(""))
                    tfoot = footer;

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Examples of javax.servlet.jsp.tagext.JspFragment

        DataGridTagModel dgm = DataGridUtil.getDataGridTagModel(jspContext);
        if(dgm == null)
            throw new JspException(Bundle.getErrorString("DataGridTags_MissingDataGridModel"));


        if(dgm.getRenderState() == DataGridTagModel.RENDER_STATE_CAPTION) {
            JspFragment fragment = getJspBody();
            if(fragment != null) {
                String captionScript = null;
                if(_captionTag.id != null) {
                    HttpServletRequest request = JspUtil.getRequest(getJspContext());
                    captionScript = renderNameAndId(request, _captionTag, null);
                }


                StringWriter sw = new StringWriter();
                TableRenderer tableRenderer = dgm.getTableRenderer();
                StyleModel stylePolicy = dgm.getStyleModel();
                AbstractRenderAppender appender = new WriteRenderAppender(jspContext);


                if(_captionTag.styleClass == null)
                    _captionTag.styleClass = stylePolicy.getCaptionClass();


                tableRenderer.openCaption(_captionTag, appender);


                fragment.invoke(sw);
                appender.append(sw.toString());


                tableRenderer.closeCaption(appender);


                if(captionScript != null)

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Examples of javax.servlet.jsp.tagext.JspFragment

        else
            styleClasses.add(_cellState.styleClass);


        _cellState.styleClass = dataGridModel.getStyleModel().buildStyleClassValue(styleClasses);


        JspFragment fragment = getJspBody();
        StringWriter sw = new StringWriter();
        String jspFragmentOutput = null;
        if(fragment != null) {
            fragment.invoke(sw);
            jspFragmentOutput = sw.toString();
        }


        tableRenderer.openHeaderCell(_cellState, appender);
        renderHeaderCellContents(appender, jspFragmentOutput);

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Examples of javax.servlet.jsp.tagext.JspFragment


        /*
           note, this runs in order to allow any nested tags to do their work.  
           this provides support for formatters, parameters, etc
         */
        JspFragment fragment = getJspBody();
        StringWriter sw = new StringWriter();
        if(fragment != null)
            fragment.invoke(sw);


        tableRenderer.openTableCell(_cellState, appender);
        renderDataCellContents(appender, sw.toString());
        tableRenderer.closeTableCell(appender);

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Examples of javax.servlet.jsp.tagext.JspFragment

            TableRenderer tableRenderer = dataGridModel.getTableRenderer();
            assert tableRenderer != null;


            InternalStringBuilder content = new InternalStringBuilder();
            AbstractRenderAppender appender = new StringBuilderRenderAppender(content);
            JspFragment fragment = getJspBody();


            if(dataGridModel.isRenderRowGroups())
                tableRenderer.openTableBody(_tbodyTag, appender);


            HttpServletRequest request = JspUtil.getRequest(getJspContext());
            while(dataGridModel.hasNextDataItem()) {


                StringWriter sw = new StringWriter();


                /* first things first -- advance to the next data item */
                dataGridModel.nextDataItem();


                fragment.invoke(sw);


                String trScript = null;
                if(_renderRow) {
                    TrTag.State trState = new TrTag.State();
                    int index = dataGridModel.getCurrentIndex();

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Examples of javax.servlet.jsp.tagext.JspFragment

        if(!(renderState == DataGridTagModel.RENDER_STATE_HEADER ||
           renderState != DataGridTagModel.RENDER_STATE_GRID ||
           renderState != DataGridTagModel.RENDER_STATE_FOOTER))
            return;


        JspFragment fragment = getJspBody();


        StyleModel styleModel = dataGridModel.getStyleModel();
        assert styleModel != null;


        TableRenderer tableRenderer = dataGridModel.getTableRenderer();
        assert tableRenderer != null;


        HttpServletRequest request = JspUtil.getRequest(getJspContext());
        InternalStringBuilder content = new InternalStringBuilder();
        AbstractRenderAppender appender = new StringBuilderRenderAppender(content);


        if(_trState.styleClass == null) {
            if(renderState == DataGridTagModel.RENDER_STATE_GRID) {
                int index = dataGridModel.getCurrentIndex();
                if(index % 2 == 0)
                    _trState.styleClass = styleModel.getRowClass();
                else _trState.styleClass = styleModel.getAltRowClass();
            }
            else if(renderState == DataGridTagModel.RENDER_STATE_HEADER)
                _trState.styleClass = styleModel.getHeaderRowClass();
            else if(renderState == DataGridTagModel.RENDER_STATE_FOOTER)
                _trState.styleClass = styleModel.getFooterRowClass();
            else assert false : "Attempting to apply style information during an invalid render state";
        }


        String trScript = null;
        if(_trState.id != null)
            trScript = renderNameAndId(request, _trState, null);


        tableRenderer.openTableRow(_trState, appender);


        StringWriter sw = new StringWriter();
        if(fragment != null)
            fragment.invoke(sw);
        appender.append(sw.toString());


        tableRenderer.closeTableRow(appender);


        if(trScript != null)

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