com.zenika.vertx.lib.asongo.then.DocumentThenTemplate.java Source code

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Here is the source code for com.zenika.vertx.lib.asongo.then.DocumentThenTemplate.java

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/*
 * The MIT License (MIT)
 *
 * Copyright (c)  2014 Zenika
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @author M. Labusquire
 */

package com.zenika.vertx.lib.asongo.then;

import com.mongodb.MongoException;
import com.zenika.vertx.lib.asongo.AsongoConfiguration;
import com.zenika.vertx.lib.asongo.domain.result.DocumentResult;
import com.zenika.vertx.lib.asongo.mapper.marshall.Unmarshaller;
import com.zenika.vertx.lib.asongo.operation.DocumentMongoOperator;
import org.vertx.java.core.Handler;
import org.vertx.java.core.eventbus.Message;
import org.vertx.java.core.json.JsonObject;
import org.vertx.java.core.logging.Logger;
import org.vertx.java.core.logging.impl.LoggerFactory;

/**
 * This implementation is convenient for any generified return type
 * T is the return type
 * K is the type of document
 *
 * @author M. Labusquire
 */
public abstract class DocumentThenTemplate<T, K> implements Then<T> {

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

    protected final DocumentMongoOperator operator;
    protected final AsongoConfiguration configuration;

    protected DocumentThenTemplate(DocumentMongoOperator operator, AsongoConfiguration configuration) {

        if (operator == null || configuration == null) {
            throw new IllegalArgumentException("An operator and a configuration is required");
        }

        this.operator = operator;
        this.configuration = configuration;
    }

    @Override
    public void then(final Handler<T> handler) {

        final JsonObject command = getCommand();
        final Class<K> clazz = getClazz();

        if (LOGGER.isDebugEnabled())
            LOGGER.debug("The command " + command + ", is send to " + configuration.getMongoPersistorAdress());

        configuration.getEventBus().send(configuration.getMongoPersistorAdress(), command,
                new Handler<Message<JsonObject>>() {

                    @Override
                    public void handle(final Message<JsonObject> message) {

                        Unmarshaller unmarshaller = configuration.getMapper().getUnmarshaller();

                        final DocumentResult<K> presult = unmarshaller.unmarshall(message.body().toString(),
                                DocumentResult.class, clazz);

                        if (LOGGER.isDebugEnabled())
                            LOGGER.debug("The result is " + presult);

                        if (presult.isNotError()) {
                            handler.handle(operator.<T, K>getResult(presult));
                        } else {
                            String errorMsg = presult.getMessage();
                            LOGGER.error("Bad request to mongo " + errorMsg + " with the command " + command);
                            throw new MongoException(
                                    "Bad request to mongo " + errorMsg + " with the command " + command);
                        }

                    }
                });
    }

    protected abstract JsonObject getCommand();

    protected abstract Class<K> getClazz();

}