com.jporm.rm.quasar.connection.datasource.QuasarDataSourceTransactionProvider Maven / Gradle / Ivy

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/*******************************************************************************
 * Copyright 2013 Francesco Cina'
 *
 * 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 com.jporm.rm.quasar.connection.datasource;

import java.util.concurrent.atomic.AtomicInteger;

import javax.sql.DataSource;

import com.jporm.commons.core.async.AsyncTaskExecutor;
import com.jporm.commons.core.async.ThreadPoolAsyncTaskExecutor;
import com.jporm.commons.core.inject.ServiceCatalog;
import com.jporm.commons.core.query.SqlFactory;
import com.jporm.commons.core.query.cache.SqlCache;
import com.jporm.commons.core.util.DBTypeDescription;
import com.jporm.rm.connection.Transaction;
import com.jporm.rm.connection.TransactionProvider;
import com.jporm.rm.connection.datasource.DataSourceTransaction;
import com.jporm.rm.quasar.connection.JpoCompletableWrapper;
import com.jporm.sql.dialect.DBProfile;

/**
 *
 * @author Francesco Cina
 *
 *         21/mag/2011
 */
public class QuasarDataSourceTransactionProvider implements TransactionProvider {

    private final static AtomicInteger COUNT = new AtomicInteger(0);
    private final AsyncTaskExecutor connectionExecutor = new ThreadPoolAsyncTaskExecutor(2, "jpo-connection-get-pool-" + COUNT.getAndIncrement());
    private final AsyncTaskExecutor executor;
    private final DataSource dataSource;
    private QuasarDataSourceConnectionProvider connectionProvider;
    private DBProfile dbType;

    public QuasarDataSourceTransactionProvider(final DataSource dataSource, final AsyncTaskExecutor executor) {
        this(dataSource, executor, null);
    }

    public QuasarDataSourceTransactionProvider(final DataSource dataSource, final AsyncTaskExecutor executor, final DBProfile dbType) {
        this.dataSource = dataSource;
        this.executor = executor;
        this.dbType = dbType;
    }

    @Override
    public final DBProfile getDBProfile() {
        if (dbType == null) {
            dbType = JpoCompletableWrapper.get(executor.execute(() -> {
                return DBTypeDescription.build(dataSource).getDBType().getDBProfile();
            }));
        }
        return dbType;
    }

    @Override
    public Transaction getTransaction(ServiceCatalog serviceCatalog, SqlCache sqlCache, SqlFactory sqlFactory) {
        return new DataSourceTransaction(serviceCatalog, getDBProfile(), sqlCache, sqlFactory, getConnectionProvider());
    }

    @Override
    public QuasarDataSourceConnectionProvider getConnectionProvider() {
        if (connectionProvider == null) {
            connectionProvider = new QuasarDataSourceConnectionProvider(dataSource, getDBProfile(), connectionExecutor, executor);
        }
        return connectionProvider;
    }

}