report.builder.ListBuilder.java Source code

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Here is the source code for report.builder.ListBuilder.java

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/**
 * Copyright (C) 2013 Benjamin Bouguet
 *
 * ReportGenerator is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * ReportGenerator is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package report.builder;

import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;

import org.json.simple.JSONArray;
import org.json.simple.JSONObject;

import fr.opensagres.xdocreport.template.IContext;
import fr.opensagres.xdocreport.template.formatter.FieldsMetadata;

/**
 * @author Benjamin Bouguet
 *
 */
public class ListBuilder implements IContextBuilder {

    /**
     * Initializes the FieldsMetaData with the key of the JSON data
     * and adds the list to the report's context.
     * @param listObject The JSON list object.
     */
    @Override
    public void build(JSONObject json, FieldsMetadata metadata, IContext context) {
        // Iterates on all the list:
        Iterator<?> iter = json.entrySet().iterator();
        while (iter.hasNext()) {
            // Gets the key and the array:
            Map.Entry<?, ?> entry = (Map.Entry<?, ?>) iter.next();
            String key = entry.getKey().toString();
            JSONArray array = (JSONArray) entry.getValue();

            // Gets the FieldsMetaData, searching for all different keys on the Map:
            HashSet<String> metaData = new HashSet<String>();
            Iterator<?> iterArray = array.iterator();
            while (iterArray.hasNext()) {
                JSONObject map = (JSONObject) iterArray.next();
                Iterator<?> iterMap = map.entrySet().iterator();
                while (iterMap.hasNext()) {
                    Map.Entry<?, ?> entryMap = (Map.Entry<?, ?>) iterMap.next();
                    metaData.add(entryMap.getKey().toString());
                }
            }

            // Sets the FieldsMetaData:
            Iterator<?> iterMetaData = metaData.iterator();
            while (iterMetaData.hasNext()) {
                metadata.addFieldAsList(key + "." + iterMetaData.next().toString());
            }

            // Adds the array to the report's context.
            // array can be directly passed as a value for contextMap because it inherits from ArrayList.
            context.put(key, array);
        }
    }

}