net.kamhon.ieagle.struts2.jquery.datatables.DatatablesInterceptor.java Source code

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Here is the source code for net.kamhon.ieagle.struts2.jquery.datatables.DatatablesInterceptor.java

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/*
 * Copyright 2012 Eng Kam Hon (kamhon@gmail.com)
 * 
 * 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 net.kamhon.ieagle.struts2.jquery.datatables;

import java.util.Map;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.Interceptor;

public class DatatablesInterceptor implements Interceptor {
    private static final long serialVersionUID = 1L;
    private static final Log log = LogFactory.getLog(DatatablesInterceptor.class);

    public void destroy() {
        log.debug("call DatatablesInterceptor.destroy()");
    }

    public void init() {
        log.debug("call DatatablesInterceptor.init()");
    }

    public String intercept(ActionInvocation actionInvocation) throws Exception {
        Map<String, Object> params = actionInvocation.getInvocationContext().getParameters();

        if (actionInvocation.getAction() instanceof BaseDatatablesJsonAction<?>) {
            BaseDatatablesJsonAction<?> action = (BaseDatatablesJsonAction<?>) actionInvocation.getAction();

            Object obj = params.get("sColumns");
            if (obj != null) {
                String columns = ((String[]) obj)[0];

                String ss[] = StringUtils.split(columns, ",");
                action.setGridColumns(ss);
            }
        }

        return actionInvocation.invoke();
    }
}