org.primefaces.extensions.converter.JsonExposeAwareConverter Maven / Gradle / Ivy

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/*
 * Copyright 2011-2015 PrimeFaces Extensions
 *
 * Licensed 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.
 *
 * $Id$
 */

package org.primefaces.extensions.converter;

import javax.el.ValueExpression;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;

import org.primefaces.extensions.util.json.GsonConverter;
import org.primefaces.extensions.util.json.GsonExposeAwareConverter;

/**
 * Extension of {@link org.primefaces.extensions.converter.JsonConverter}. It uses specific Gson converters from this tag library.
 *
 * @author  Oleg Varaksin / last modified by $Author$
 * @version $Revision$
 * @since   1.1.0
 */
public class JsonExposeAwareConverter extends JsonConverter {

	private boolean excludeFieldsWithoutExposeAnnotation = false;

	public JsonExposeAwareConverter() {
	}

	public JsonExposeAwareConverter(boolean excludeFieldsWithoutExposeAnnotation) {
		this.excludeFieldsWithoutExposeAnnotation = excludeFieldsWithoutExposeAnnotation;
	}

	public boolean isExcludeFieldsWithoutExposeAnnotation() {
		return excludeFieldsWithoutExposeAnnotation;
	}

	public void setExcludeFieldsWithoutExposeAnnotation(boolean excludeFieldsWithoutExposeAnnotation) {
		this.excludeFieldsWithoutExposeAnnotation = excludeFieldsWithoutExposeAnnotation;
	}

	@Override
	public Object getAsObject(FacesContext context, UIComponent component, String value) {
		java.lang.reflect.Type objType;

		if (getType() == null) {
			ValueExpression expression = component.getValueExpression("value");
			objType = expression.getType(context.getELContext());
		} else {
			objType = getObjectType(getType().trim(), false);
		}

		if (excludeFieldsWithoutExposeAnnotation) {
			return GsonExposeAwareConverter.getGson().fromJson(value, objType);
		} else {
			return GsonConverter.getGson().fromJson(value, objType);
		}
	}

	@Override
	public String getAsString(FacesContext context, UIComponent component, Object value) {
		if (excludeFieldsWithoutExposeAnnotation) {
			if (getType() == null) {
				return GsonExposeAwareConverter.getGson().toJson(value);
			} else {
				return GsonExposeAwareConverter.getGson().toJson(value, getObjectType(getType().trim(), false));
			}
		} else {
			if (getType() == null) {
				return GsonConverter.getGson().toJson(value);
			} else {
				return GsonConverter.getGson().toJson(value, getObjectType(getType().trim(), false));
			}
		}
	}
}