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/*
 * Copyright (c) 2011-2014 The original author or authors
 * ------------------------------------------------------
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Apache License v2.0 which accompanies this distribution.
 *
 *     The Eclipse Public License is available at
 *     http://www.eclipse.org/legal/epl-v10.html
 *
 *     The Apache License v2.0 is available at
 *     http://www.opensource.org/licenses/apache2.0.php
 *
 * You may elect to redistribute this code under either of these licenses.
 */

package io.vertx.ext.jdbc.impl.actions;

import io.vertx.core.json.JsonArray;
import io.vertx.ext.sql.SQLOptions;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

/**
 * @author Nick Scavelli
 */
public class JDBCQuery extends AbstractJDBCAction {

  private final String sql;
  private final JsonArray in;

  public JDBCQuery(JDBCStatementHelper helper, SQLOptions options, String sql, JsonArray in) {
    super(helper, options);
    this.sql = sql;
    this.in = in;
  }

  @Override
  public io.vertx.ext.sql.ResultSet execute(Connection conn) throws SQLException {
    try (PreparedStatement statement = conn.prepareStatement(sql)) {
      // apply statement options
      applyStatementOptions(statement);

      fillStatement(statement, in);
      boolean retResult = statement.execute();

      io.vertx.ext.sql.ResultSet resultSet = null;

      if (retResult) {
        io.vertx.ext.sql.ResultSet ref = null;
        // normal return only
        while (retResult) {
          try (ResultSet rs = statement.getResultSet()) {
            // 1st rs
            if (ref == null) {
              resultSet = asList(rs);
              ref = resultSet;
            } else {
              ref.setNext(asList(rs));
              ref = ref.getNext();
            }
          }
          retResult = statement.getMoreResults();
        }
      }

      return resultSet;
    }
  }

}