package io.ebeaninternal.server.transaction;

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

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

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

  TransactionFactoryTenantWithRead(TransactionManager manager, DataSourceSupplier dataSourceSupplier, CurrentTenantProvider tenantProvider) {
    super(manager, dataSourceSupplier, tenantProvider);
  }

  @Override
  public SpiTransaction createQueryTransaction(Object tenantId) {

    Connection connection = null;
    try {
      if (tenantId == null) {
        // tenantId not set (by lazy loading) so get current tenantId
        tenantId = tenantProvider.currentId();
      }
      connection = dataSourceSupplier.getReadOnlyConnection(tenantId);
      return new ImplicitReadOnlyTransaction(manager, connection, tenantId);

    } catch (PersistenceException ex) {
      JdbcClose.close(connection);
      throw ex;

    } catch (SQLException ex) {
      throw new PersistenceException(ex);
    }
  }
}