edu.ku.brc.af.ui.forms.DataSetterForObj.java Source code

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Here is the source code for edu.ku.brc.af.ui.forms.DataSetterForObj.java

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/* Copyright (C) 2015, University of Kansas Center for Research
 * 
 * Specify Software Project, specify@ku.edu, Biodiversity Institute,
 * 1345 Jayhawk Boulevard, Lawrence, Kansas, 66045, USA
 * 
 * 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 2
 * of the License, or (at your option) 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/
package edu.ku.brc.af.ui.forms;

import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;

import org.apache.commons.beanutils.PropertyUtils;
import org.apache.log4j.Logger;

import edu.ku.brc.ui.UIHelper;

/**
 * This knows how to set a field's value into a POJO.<br><br>
 * Implementation idea: We may need to cache the method objects, 
 * and then the factory will want to create a different object per class that will be using this)
 *
 * @code_status Beta
 * 
 * @author rods
 *
 */
public class DataSetterForObj implements DataObjectSettable {
    // Static Data Members
    private static final Logger log = Logger.getLogger(DataSetterForObj.class);

    protected Object[] args = new Object[1];

    /**
     * Default constructor (needed for factory) 
     */
    public DataSetterForObj() {
        // do nothing
    }

    /* (non-Javadoc)
     * @see edu.ku.brc.ui.forms.DataObjectSettable#setFieldValue(java.lang.Object, java.lang.String, java.lang.Object)
     */
    public void setFieldValue(Object dataObj, String fieldName, Object data) {
        //log.debug("fieldName["+fieldName+"] dataObj["+dataObj+"] data ["+data+"]");
        try {
            PropertyDescriptor descr = PropertyUtils.getPropertyDescriptor(dataObj, fieldName.trim());
            if (descr != null) {
                // Check to see if the class of the data we have is different than the one we are trying to set into
                // This typically happens when we have a TextField with a number and it needs to be converted from a 
                // String representation of the number to the actually numeric type like from String to Integer or Short
                Object dataVal = data;
                Class<?> fieldClass = descr.getPropertyType();
                if (data != null) {

                    if (dataVal.getClass() != fieldClass && !fieldClass.isAssignableFrom(dataVal.getClass())) {
                        dataVal = UIHelper.convertDataFromString(dataVal.toString(), fieldClass);
                    }
                } /*else // Data is Null
                  {
                  if (fieldClass.isAssignableFrom(Collection.class) || fieldClass.isAssignableFrom(Set.class))
                  {
                      return;
                  }
                  }*/
                if (dataVal instanceof String && ((String) dataVal).isEmpty()) {
                    dataVal = null;
                }
                Method setter = PropertyUtils.getWriteMethod(descr);
                if (setter != null && dataObj != null) {
                    args[0] = dataVal;
                    //log.debug("fieldname["+fieldName+"] dataObj["+dataObj+"] data ["+dataVal+"] ("+(dataVal != null ? dataVal.getClass().getSimpleName() : "")+")");
                    setter.invoke(dataObj, dataVal);
                } else {
                    log.error("dataObj was null - Trouble setting value field named["
                            + (fieldName != null ? fieldName.trim() : "null") + "] in data object ["
                            + (dataObj != null ? dataObj.getClass().toString() : "null") + "]");
                }
            } else {
                log.error("We could not find a field named[" + fieldName.trim() + "] in data object ["
                        + dataObj.getClass().toString() + "]");
            }
        } catch (java.lang.reflect.InvocationTargetException ex) {
            log.error("Trouble setting value field named[" + (fieldName != null ? fieldName.trim() : "null")
                    + "] in data object [" + (dataObj != null ? dataObj.getClass().toString() : "null") + "]");
            log.error(ex);
            ex.printStackTrace();
            edu.ku.brc.af.core.UsageTracker.incrHandledUsageCount();
            edu.ku.brc.exceptions.ExceptionTracker.getInstance().capture(DataSetterForObj.class, ex);

        } catch (Exception ex) {
            log.error("Trouble setting value field named[" + (fieldName != null ? fieldName.trim() : "null")
                    + "] in data object [" + (dataObj != null ? dataObj.getClass().toString() : "null") + "]");
            log.error(ex);
            ex.printStackTrace();
            edu.ku.brc.af.core.UsageTracker.incrHandledUsageCount();
            edu.ku.brc.exceptions.ExceptionTracker.getInstance().capture(DataSetterForObj.class, ex);
        }
    }

    /* (non-Javadoc)
     * @see edu.ku.brc.ui.forms.DataObjectSettable#usesDotNotation()
     */
    public boolean usesDotNotation() {
        return true;
    }

}