/** * Licensed under the Artistic License; you may not use this file * except in compliance with the License. * You may obtain a copy of the License at * *      http://displaytag.sourceforge.net/license.html * * THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. */package org.displaytag.tags.el;import javax.servlet.jsp.JspException;/** * Adds EL support to displaytag's TableTag. * @author Tim McCune * @author Fabrizio Giustina * @version $Revision: 1125 $ ($Author: fgiust $) */public class ELTableTag extends org.displaytag.tags.TableTag{    /**     * D1597A17A6.     */    private static final long serialVersionUID = 899149338534L;    /**     * Expression for the "class" tag attribute.     */    private String classExpr;    /**     * Expression for the "cellpadding" tag attribute.     */    private String cellpaddingExpr;    /**     * Expression for the "cellspacing" tag attribute.     */    private String cellspacingExpr;    /**     * Expression for the "decorator" tag attribute.     */    private String decoratorExpr;    /**     * Expression for the "defaultsort" tag attribute.     */    private String defaultsortExpr;    /**     * Expression for the "defaultorder" tag attribute.     */    private String defaultorderExpr;    /**     * Expression for the "export" tag attribute.     */    private String exportExpr;    /**     * Expression for the "frame" tag attribute.     */    private String frameExpr;    /**     * Expression for the "length" tag attribute.     */    private String lengthExpr;    /**     * Expression for the "name" tag attribute.     */    private String nameExpr;    /**     * Expression for the "offset" tag attribute.     */    private String offsetExpr;    /**     * Expression for the "pagesize" tag attribute.     */    private String pagesizeExpr;    /**     * Expression for the "partialList" tag attribute.     */    private String partialListExpr;    /**     * Expression for the "requestURI" tag attribute.     */    private String requestURIExpr;    /**     * Expression for the "requestURIcontext" tag attribute.     */    private String requestURIcontextExpr;    /**     * Expression for the "rules" tag attribute.     */    private String rulesExpr;    /**     * Expression for the "size" tag attribute     */    private String sizeExpr;    /**     * Expression for the "sort" tag attribute.     */    private String sortExpr;    /**     * Expression for the "style" tag attribute.     */    private String styleExpr;    /**     * Expression for the "summary" tag attribute.     */    private String summaryExpr;    /**     * Expression for the "excludedParams" tag attribute.     */    private String excludedParamsExpr;    /**     * Expression for the "id" tag attribute.     */    private String idExpr;    /**     * Expression for the "htmlId" tag attribute.     */    private String htmlIdExpr;    /**     * Expression for the "keepStatus" tag attribute.     */    private String keepStatusExpr;    /**     * Expression for the "clearStatus" tag attribute.     */    private String clearStatusExpr;    /**     * Expression for the "form" tag attribute.     */    private String formExpr;    /**     * @see org.displaytag.tags.TableTag#setUid(java.lang.String)     */    public void setUid(String value)    {        idExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setCellpadding(java.lang.String)     * @param value EL expression for attribute value     */    public void setCellpadding(String value)    {        cellpaddingExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setStyle(java.lang.String)     * @param value EL expression for attribute value     */    public void setStyle(String value)    {        styleExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setSummary(java.lang.String)     * @param value EL expression for attribute value     */    public void setSummary(String value)    {        summaryExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setCellspacing(java.lang.String)     * @param value EL expression for attribute value     */    public void setCellspacing(String value)    {        cellspacingExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setClass(java.lang.String)     * @param value EL expression for attribute value     */    public void setClass(String value)    {        classExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setDecorator(java.lang.String)     * @param value EL expression for attribute value     */    public void setDecorator(String value)    {        decoratorExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setDefaultsort(int)     * @param value EL expression for attribute value     */    public void setDefaultsort(String value)    {        defaultsortExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setDefaultorder(java.lang.String)     * @param value EL expression for attribute value     */    public void setDefaultorder(String value)    {        defaultorderExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setExport(boolean)     * @param value EL expression for attribute value     */    public void setExport(String value)    {        exportExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setFrame(java.lang.String)     * @param value EL expression for attribute value     */    public void setFrame(String value)    {        frameExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setLength(int)     * @param value EL expression for attribute value     */    public void setLength(String value)    {        lengthExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setName(java.lang.Object)     * @param value EL expression for attribute value     */    public void setName(String value)    {        nameExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setOffset(int)     * @param value EL expression for attribute value     */    public void setOffset(String value)    {        offsetExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setPagesize(int)     * @param value EL expression for attribute value     */    public void setPagesize(String value)    {        pagesizeExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setRequestURI(java.lang.String)     * @param value EL expression for attribute value     */    public void setRequestURI(String value)    {        requestURIExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setRequestURIcontext(boolean)     * @param value EL expression for attribute value     */    public void setRequestURIcontext(String value)    {        requestURIcontextExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setRules(java.lang.String)     * @param value EL expression for attribute value     */    public void setRules(String value)    {        rulesExpr = value;    }    /**     * @param value EL expression for attribute value     * @see org.displaytag.tags.TableTag#setSize(java.lang.String)     */    public void setSize(String value)    {        sizeExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setSort(java.lang.String)     * @param value EL expression for attribute value     */    public void setSort(String value)    {        sortExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setExcludedParams(java.lang.String)     * @param value EL expression for attribute value     */    public void setExcludedParams(String value)    {        excludedParamsExpr = value;    }    /**     * @see org.displaytag.tags.TableTag#setHtmlId(java.lang.String)     * @param value EL expression for attribute value     */    public void setHtmlId(String value)    {        htmlIdExpr = value;    }    /**     * @see javax.servlet.jsp.tagext.Tag#doStartTag()     */    public int doStartTag() throws JspException    {        evaluateExpressions();        return super.doStartTag();    }    /**     * Evaluates EL expressions and sets values in the parent Table Tag.     * @throws JspException for errors during evaluation     */    private void evaluateExpressions() throws JspException    {        ExpressionEvaluator eval = new ExpressionEvaluator(this, pageContext);        if (idExpr != null)        {            super.setUid(eval.evalString("uid", idExpr)); //$NON-NLS-1$        }        if (htmlIdExpr != null)        {            super.setHtmlId(eval.evalString("htmlId", htmlIdExpr)); //$NON-NLS-1$        }        if (cellpaddingExpr != null)        {            super.setCellpadding(eval.evalString("cellpadding", cellpaddingExpr)); //$NON-NLS-1$        }        if (cellspacingExpr != null)        {            super.setCellspacing(eval.evalString("cellspacing", cellspacingExpr)); //$NON-NLS-1$        }        if (classExpr != null)        {            super.setClass(eval.evalString("class", classExpr)); //$NON-NLS-1$        }        if (decoratorExpr != null)        {            super.setDecorator(eval.evalString("decorator", decoratorExpr)); //$NON-NLS-1$        }        if (defaultorderExpr != null)        {            super.setDefaultorder(eval.evalString("defaultorder", defaultorderExpr)); //$NON-NLS-1$        }        if (excludedParamsExpr != null)        {            super.setExcludedParams(eval.evalString("excludedParams", excludedParamsExpr)); //$NON-NLS-1$        }        if (defaultsortExpr != null)        {            super.setDefaultsort(eval.evalInt("defaultsort", defaultsortExpr)); //$NON-NLS-1$        }        if (exportExpr != null)        {            super.setExport(eval.evalBoolean("export", exportExpr)); //$NON-NLS-1$        }        if (frameExpr != null)        {            super.setFrame(eval.evalString("frame", frameExpr)); //$NON-NLS-1$        }        if (lengthExpr != null)        {            super.setLength(eval.evalInt("length", lengthExpr)); //$NON-NLS-1$        }        if (nameExpr != null)        {            Object source = eval.eval("name", nameExpr, Object.class); //$NON-NLS-1$            // be more user-friendly: accept both EL and legacy expressions            if (source instanceof String)            {                super.setNameString((String) source);            }            else            {                // evaluate name only once, so assign it to "list"                super.list = source;            }        }        if (offsetExpr != null)        {            super.setOffset(eval.evalInt("offset", offsetExpr)); //$NON-NLS-1$        }        if (pagesizeExpr != null)        {            super.setPagesize(eval.evalInt("pagesize", pagesizeExpr)); //$NON-NLS-1$        }        if (partialListExpr != null)        {            super.setPartialList(eval.evalBoolean("partialList", partialListExpr)); //$NON-NLS-1$        }        if (requestURIExpr != null)        {            super.setRequestURI(eval.evalString("requestURI", requestURIExpr)); //$NON-NLS-1$        }        if (requestURIcontextExpr != null)        {            super.setRequestURIcontext(eval.evalBoolean("requestURIcontext", requestURIcontextExpr)); //$NON-NLS-1$        }        if (rulesExpr != null)        {            super.setRules(eval.evalString("rules", rulesExpr)); //$NON-NLS-1$        }        if (sizeExpr != null)        {            Object source = eval.eval("size", sizeExpr, Object.class); //$NON-NLS-1$            // be more user-friendly: accept both EL and legacy expressions            if (source instanceof String)            {                super.setSizeObjectName((String) source);            }            else            {                // evaluate size only once, so assign it to the "size" object                super.setSize(source);            }        }        if (sortExpr != null)        {            super.setSort(eval.evalString("sort", sortExpr)); //$NON-NLS-1$        }        if (styleExpr != null)        {            super.setStyle(eval.evalString("style", styleExpr)); //$NON-NLS-1$        }        if (summaryExpr != null)        {            super.setSummary(eval.evalString("summary", summaryExpr)); //$NON-NLS-1$        }        if (keepStatusExpr != null)        {            super.setKeepStatus(eval.evalBoolean("keepStatus", keepStatusExpr)); //$NON-NLS-1$        }        if (clearStatusExpr != null)        {            super.setClearStatus(eval.evalBoolean("clearStatus", clearStatusExpr)); //$NON-NLS-1$        }        if (formExpr != null)        {            super.setForm(eval.evalString("form", formExpr)); //$NON-NLS-1$        }    }    /**     * @see javax.servlet.jsp.tagext.Tag#release()     */    public void release()    {        super.release();        this.cellpaddingExpr = null;        this.cellspacingExpr = null;        this.classExpr = null;        this.decoratorExpr = null;        this.defaultorderExpr = null;        this.defaultsortExpr = null;        this.exportExpr = null;        this.frameExpr = null;        this.lengthExpr = null;        this.nameExpr = null;        this.offsetExpr = null;        this.pagesizeExpr = null;        this.partialListExpr = null;        this.requestURIExpr = null;        this.requestURIcontextExpr = null;        this.rulesExpr = null;        this.sizeExpr = null;        this.sortExpr = null;        this.styleExpr = null;        this.summaryExpr = null;        this.excludedParamsExpr = null;        this.idExpr = null;        this.htmlIdExpr = null;        this.keepStatusExpr = null;        this.clearStatusExpr = null;        this.formExpr = null;    }}