Package org.internna.iwebmvc.tags

Source Code of org.internna.iwebmvc.tags.Value

/*
* Copyright 2002-2007 the original author or authors.
*
* Licensed under the Apache license, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.internna.iwebmvc.tags;

import javax.servlet.jsp.JspContext;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.SimpleTagSupport;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.internna.iwebmvc.crypto.Cipherer;
import org.springframework.beans.BeanWrapperImpl;

import static org.internna.iwebmvc.utils.StringUtils.hasText;
import static org.internna.iwebmvc.utils.StringUtils.encodeToHtmlEntities;
import static org.internna.iwebmvc.utils.StringUtils.encodeToJSEscapeSequences;

/**
* Gets the value of a property of a bean and stores either it in a property or
* prints it in the JSP output directly.
*
* @author Jose Noheda
* @since 2.0
*/
public class Value extends SimpleTagSupport {

    protected Log logger = LogFactory.getLog(getClass());

    private String path;
    private Object entity;
    private String property;
    private boolean encrypt = false;
    private boolean javascript = false;

    public void setPath(String path) {
        this.path = path;
    }

    public void setEntity(Object entity) {
        this.entity = entity;
    }

    public void setProperty(String property) {
        this.property = property;
    }

    public void setEncrypt(boolean encrypt) {
        this.encrypt = encrypt;
    }

    /**
     * Encodes the result to JS unicode instead of HTML entities if printed to the JSP. Defaults to HTML
     *
     * @param javascript any
     */
    public void setJavascript(boolean javascript) {
        this.javascript = javascript;
    }

    /**
     * Obtains the value of a (nested) property for an object and writes it to the page.
     */
    @Override
    public void doTag() throws JspException {
        if (entity != null) {
            try {
                JspContext context = getJspContext();
                Object val = new BeanWrapperImpl(entity).getPropertyValue(path);
                if (logger.isDebugEnabled()) logger.debug("Obtained value [" + path + "] for bean [" + entity + "]: " + val);
                if ((val != null) && encrypt) {
                    Cipherer cipher = (Cipherer) context.getAttribute(Cipherer.CIPHERER, 2);
                    val = cipher.encrypt(val.toString());
                }
                if (hasText(property)) context.setAttribute(property, val);
                else if (val != null) context.getOut().print(javascript ? encodeToJSEscapeSequences(val.toString()): encodeToHtmlEntities(val.toString()));
            } catch (Exception ex) {
                if (logger.isDebugEnabled()) logger.debug("Could not obtain a value for [" + path + "] in bean [" + entity.getClass().getName() + "]: " + ex.getMessage());
            }
        }
    }

}
TOP

Related Classes of org.internna.iwebmvc.tags.Value

TOP
Copyright © 2018 www.massapi.com. All rights reserved.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.