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package io.ebeaninternal.server.transaction;

import io.ebean.util.JdbcClose;
import io.ebeaninternal.api.SpiTransaction;

import javax.persistence.PersistenceException;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;

/**
 * Aware of read only autoCommit based DataSource.
 * 
 * This means for implicit query only transactions we can:
 * - Use the read only DataSource
 * - Skip explicit commit (as we use AutoCommit instead)
 * 
 */
final class TransactionFactoryBasicWithRead extends TransactionFactoryBasic {

  private final DataSource readOnlyDataSource;

  TransactionFactoryBasicWithRead(TransactionManager manager, DataSourceSupplier dataSourceSupplier) {
    super(manager, dataSourceSupplier);
    this.readOnlyDataSource = dataSourceSupplier.readOnlyDataSource();
  }

  @Override
  public SpiTransaction createReadOnlyTransaction(Object tenantId, boolean useMaster) {
    Connection connection = null;
    try {
      connection = useMaster ? dataSource.getConnection() : readOnlyDataSource.getConnection();
      return new ImplicitReadOnlyTransaction(useMaster, manager, connection);
    } catch (PersistenceException ex) {
      JdbcClose.close(connection);
      throw ex;
    } catch (SQLException ex) {
      throw new PersistenceException(ex);
    }
  }
}