org.openmrs.module.openhmis.commons.web.EntityPropertyEditor.java Source code

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Here is the source code for org.openmrs.module.openhmis.commons.web.EntityPropertyEditor.java

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/*
 * The contents of this file are subject to the OpenMRS Public 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://license.openmrs.org
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 *
 * Copyright (C) OpenMRS, LLC.  All Rights Reserved.
 */
package org.openmrs.module.openhmis.commons.web;

import java.beans.PropertyEditorSupport;
import java.lang.reflect.ParameterizedType;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.math.NumberUtils;
import org.openmrs.OpenmrsObject;
import org.openmrs.api.context.Context;
import org.openmrs.module.openhmis.commons.api.entity.IObjectDataService;

/**
 * Support class to build property editors for entities.
 * @param <E> The model class
 */
public class EntityPropertyEditor<E extends OpenmrsObject> extends PropertyEditorSupport {
    private IObjectDataService<E> service;

    public EntityPropertyEditor(Class<? extends IObjectDataService<E>> service) {
        this.service = Context.getService(service);
    }

    @Override
    @SuppressWarnings("unchecked")
    public String getAsText() {
        E entity = (E) getValue();

        if (entity == null) {
            return "";
        } else {
            return entity.getId().toString();
        }
    }

    @Override
    public void setAsText(String text) {
        if (StringUtils.isEmpty(text)) {
            setValue(null);
        } else {
            E entity;
            if (NumberUtils.isNumber(text)) {
                entity = service.getById(Integer.valueOf(text));
            } else {
                entity = service.getByUuid(text);
            }

            setValue(entity);
            if (entity == null) {
                throw new IllegalArgumentException(
                        "Entity ('" + getEntityClass().getName() + "') not found: " + text);
            }
        }
    }

    @SuppressWarnings("unchecked")
    protected Class<E> getEntityClass() {
        ParameterizedType parameterizedType = (ParameterizedType) getClass().getGenericSuperclass();

        return (Class) parameterizedType.getActualTypeArguments()[0];
    }
}