org.pepstock.jem.jbpm.tasks.workitems.MapManager.java Source code

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Here is the source code for org.pepstock.jem.jbpm.tasks.workitems.MapManager.java

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/**
JEM, the BEE - Job Entry Manager, the Batch Execution Environment
Copyright (C) 2012-2015   Andrea "Stock" Stocchero
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
any later version.
    
This program 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 General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
package org.pepstock.jem.jbpm.tasks.workitems;

import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

import javax.naming.InitialContext;
import javax.naming.NamingException;

import org.apache.commons.lang.StringUtils;
import org.pepstock.jem.jbpm.JBpmKeys;
import org.pepstock.jem.jbpm.tasks.JemWorkItem;
import org.pepstock.jem.log.LogAppl;
import org.pepstock.jem.node.tasks.jndi.ContextUtils;

/**
 * Loads a map into another map, putting the instance of data description and data sources
 * @author Andrea "Stock" Stocchero
 * @version 2.2
 */
public abstract class MapManager implements JemWorkItem {

    /**
     * Loads a map into another map, putting the instance of data description and data sources
     * @param parameters map of parameters prepared by JBPM
     * @return copy of the map but with the instances of data description and data sources
     */
    final Map<String, Object> loadParameters(Map<String, Object> parameters) {
        // gets JNDI context
        InitialContext ic = null;
        try {
            ic = ContextUtils.getContext();
        } catch (NamingException e) {
            LogAppl.getInstance().ignore(e.getMessage(), e);
        }

        // creates new map
        Map<String, Object> result = new HashMap<String, Object>();
        // scans all parameters
        for (Entry<String, Object> entry : parameters.entrySet()) {
            try {
                // gets key
                String name = entry.getKey();
                // is DD?
                if (name.startsWith(JBpmKeys.JBPM_DATA_DESCRIPTION_PREFIX)) {
                    // gets data description name
                    String ddn = StringUtils.substringAfter(name, JBpmKeys.JBPM_DATA_DESCRIPTION_PREFIX);
                    // if context is not null, lookup and stores on the map
                    if (ic != null) {
                        result.put(name, ic.lookup(ddn));
                    }
                } else if (name.startsWith(JBpmKeys.JBPM_DATA_SOURCE_PREFIX)) {
                    // is Data source?
                    // gets datasource name
                    String dds = StringUtils.substringAfter(name, JBpmKeys.JBPM_DATA_SOURCE_PREFIX);
                    // if context is not null, lookup and stores on the map
                    if (ic != null) {
                        result.put(name, ic.lookup(dds));
                    }
                } else if (!name.equalsIgnoreCase(JBpmKeys.JBPM_LOCK_KEY)) {
                    // is Lock? IGNORE
                    result.put(name, entry.getValue());
                }
            } catch (NamingException e) {
                // ignore every naming exception
                LogAppl.getInstance().ignore(e.getMessage(), e);
            }
        }
        return result;
    }
}