EObjectOperationProperty.java

package org.emfjson.jackson.databind.property;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EOperation;
import org.eclipse.emf.ecore.resource.Resource;

import java.io.IOException;
import java.lang.reflect.InvocationTargetException;

public class EObjectOperationProperty extends EObjectProperty {

	private final EOperation operation;

	protected EObjectOperationProperty(String fieldName, EOperation operation) {
		super(fieldName);

		this.operation = operation;
	}

	@Override
	public void serialize(EObject bean, JsonGenerator jg, SerializerProvider provider) throws IOException {
		Object value;
		try {
			value = bean.eInvoke(operation, null);
		} catch (InvocationTargetException e) {
			// handle error
			value = null;
		}

		if (value != null) {
			jg.writeFieldName(getFieldName());
			JsonSerializer<Object> serializer = provider.findValueSerializer(value.getClass());
			serializer.serialize(value, jg, provider);
		}
	}

	@Override
	public EObject deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException {
		return null;
	}

	@Override
	public void deserializeAndSet(JsonParser jp, EObject current, DeserializationContext ctxt, Resource resource) throws IOException {
		// do nothing
	}

}