content: package com.airhacks.enhydrator.in;
  
  /*
   * #%L
   * enhydrator
   * %%
   * Copyright (C) 2014 Adam Bien
   * %%
   * 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.
   * #L%
   */
  import com.airhacks.enhydrator.db.UnmanagedConnectionProvider;
  import java.sql.Connection;
  import java.sql.PreparedStatement;
  import java.sql.SQLException;
  import java.util.Objects;
  import javax.xml.bind.annotation.XmlAccessType;
  import javax.xml.bind.annotation.XmlAccessorType;
  import javax.xml.bind.annotation.XmlAttribute;
  import javax.xml.bind.annotation.XmlRootElement;
  
  /**
   *
   * @author airhacks.com
   */
  @XmlAccessorType(XmlAccessType.FIELD)
  @XmlRootElement(name = "jdbc-source")
  public class JDBCSource implements Source {
  
      @XmlAttribute
      private String name;
  
      private UnmanagedConnectionProvider connectionProvider;
  
      JDBCSource() {
          //JAXB requires a no-arg contructor
      }
  
      JDBCSource(UnmanagedConnectionProvider connectionProvider) {
          this();
          this.connectionProvider = connectionProvider;
          this.connectionProvider.connect();
      }
  
      @Override
      public Iterable<Row> query(String query, Object... params) {
          PreparedStatement stmt;
          try {
              Connection connection = this.connectionProvider.get();
              stmt = connection.prepareStatement(query);
          } catch (SQLException ex) {
              throw new IllegalStateException("Cannot prepare SQL statement", ex);
          }
          for (int i = 0; i < params.length; i++) {
              Object param = params[i];
              try {
                  stmt.setObject(i + 1, param);
              } catch (SQLException ex) {
                  throw new IllegalStateException("Cannot set parameter (" + i + "," + param + ") for query: " + query, ex);
              }
          }
          try {
              return new EntryIterable(new ResultSetIterator(stmt.executeQuery()));
          } catch (SQLException ex) {
              throw new IllegalStateException("Cannot execute query: " + query, ex);
          }
      }
  
      @Override
      public int hashCode() {
          int hash = 5;
          hash = 11 * hash + Objects.hashCode(this.name);
          hash = 11 * hash + Objects.hashCode(this.connectionProvider);
          return hash;
      }
  
      @Override
      public boolean equals(Object obj) {
          if (obj == null) {
              return false;
          }
          if (getClass() != obj.getClass()) {
              return false;
          }
          final JDBCSource other = (JDBCSource) obj;
          if (!Objects.equals(this.name, other.name)) {
              return false;
          }
          if (!Objects.equals(this.connectionProvider, other.connectionProvider)) {
              return false;
          }
          return true;
      }
  
      public static class Configuration {
  
          protected String url;
          protected String driver;
          protected String user;
          protected String password;
  
          public Configuration driver(String driver) {
              this.driver = driver;
              return this;
          }
  
          public Configuration url(String url) {
              this.url = url;
              return this;
          }
  
          public Configuration user(String user) {
              this.user = user;
              return this;
          }
  
          public Configuration password(String password) {
              this.password = password;
              return this;
          }
  
          public JDBCSource newSource() {
              JDBCSource source = new JDBCSource(new UnmanagedConnectionProvider(driver, url, user, password));
              return source;
          }
      }
  
      @Override
      public String toString() {
          return "JDBCSource{" + "name=" + name + ", connectionProvider=" + connectionProvider + '}';
      }
  
  }
  