FeatureTagEnable.java

package org.ff4j.web.taglib;

/*
 * #%L FlipTag.java (ff4j-web) by Cedrick LUNVEN %% Copyright (C) 2013 Ff4J %% 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. #L%
 */

import java.util.Map;

import javax.servlet.jsp.PageContext;

import org.ff4j.FF4j;
import org.ff4j.core.Feature;
import org.ff4j.core.FeatureStore;
import org.ff4j.core.FlippingExecutionContext;

/**
 * Taglib to filter display based on {@link Feature} status within {@link FeatureStore}.
 * 
 * <p>
 * Sample use
 * <p>
 * 
 * <pre>
 * <ff4j:enable featureid="mercure-desc">
 * here your html code
 *  </ff4j:enable@gt;
 * 
 * @author <a href="mailto:cedrick.lunven@gmail.com">Cedrick LUNVEN</a>
 */
public class FeatureTagEnable extends AbstractFeatureTag {

    /** serial number. */
    private static final long serialVersionUID = -4924423673988080781L;

    /** {@inheritDoc} */
    protected boolean eval(FF4j ff4j, PageContext jspContext) {
        FlippingExecutionContext executionContext = new FlippingExecutionContext();
        if (isShareHttpSession()) {
            executionContext.putString("LOCALE", pageContext.getRequest().getLocalName());
            @SuppressWarnings("unchecked")
            Map < String, String[]> parameters = pageContext.getRequest().getParameterMap();
            for (Map.Entry<String,String[]> param : parameters.entrySet()) {
                String[] innerParams = param.getValue();
                if (innerParams != null) {
                    StringBuilder sb = new StringBuilder();
                    for (String innerParam : innerParams) {
                        sb.append(innerParam);
                        sb.append(",");
                    }
                    String expression = sb.toString();
                    executionContext.putString(param.getKey(), expression.substring(0, expression.length() - 1));
                }
            }
        }
        return ff4j.check(getFeatureid(), executionContext);
    }

}