CustomJsonWriter.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.sling.pipes.internal;

import java.util.HashMap;
import java.util.Iterator;

import org.apache.commons.lang.StringUtils;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.commons.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * same thing as CustomWriter, but uses a JSON object passed as writer parameter
 */
public class CustomJsonWriter extends CustomWriter {

    private static final Logger log = LoggerFactory.getLogger(CustomJsonWriter.class);

    @Override
    public boolean handleRequest(SlingHttpServletRequest request) {
        String writerParam = request.getParameter(PARAM_WRITER);
        if (StringUtils.isNotBlank(writerParam)){
            try {
                JSONObject object = new JSONObject(writerParam);
                customOutputs = new HashMap<>();
                for (Iterator<String> keys = object.keys(); keys.hasNext();){
                    String key = keys.next();
                    customOutputs.put(key, object.getString(key));
                }
                return true;
            } catch(Exception e){
                log.error("requested json writer can't be parsed", e);
            }
        }
        return false;
    }
}