GreetingConverter.java

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2013, Red Hat, Inc. and/or its affiliates, and individual
 * contributors by the @authors tag. See the copyright.txt in the
 * distribution for a full listing of individual contributors.
 *
 * 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.
 */
package org.switchyard.quickstarts.camel.sql.binding;

import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.apache.camel.Converter;
import org.apache.log4j.Logger;

/**
 * Custom type converter used to convert from {@link Greeting} into {@link Iterator}.
 */
@Converter
public class GreetingConverter {

    private static final Logger LOGGER = Logger.getLogger(GreetingConverter.class);

    /**
     * Wraps greeting into iterator.
     *
     * @param greeting Greeting.
     * @return
     */
    @Converter
    public static Iterator<Object> from(Greeting greeting) {
        return new PojoIterator(greeting);
    }

    @Converter
    public static Greeting[] from(List<Map<String, Object>> objects) {
        Greeting[] greetings = new Greeting[objects.size()];
        int position = 0;
        for (Map<String, Object> greeting : objects) {
            greetings[position++] = new Greeting(
                (Integer) greeting.get("id"),
                (String) greeting.get("receiver"),
                (String) greeting.get("sender")
                );
        }
        return greetings;
    }

    /**
     * Wraps a map that contains the greeting sql result into a Greeting[].
     *
     * @param object Map with the result.
     */
    @Converter
    public static Greeting from(Map<String, Object> object) {
        LOGGER.debug("Converting " + object.toString() + "to a Greeting object");
        Greeting greeting = new Greeting((Integer) object.get("id"), (String) object.get("receiver"), (String) object.get("sender"));
        return greeting;
    }


}