/*
    * Copyright 2006-2007 the original author or authors.
    *
    * 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 org.springframework.batch.admin.service;
  
  import org.springframework.batch.core.repository.dao.JdbcJobExecutionDao;
  import org.springframework.batch.core.repository.dao.JdbcJobInstanceDao;
  import org.springframework.jdbc.support.incrementer.AbstractDataFieldMaxValueIncrementer;
  
  /**
   * @author Dave Syer
   * 
   */
  public class JdbcSearchableJobInstanceDao extends JdbcJobInstanceDao implements SearchableJobInstanceDao {
  
  	private static final String GET_COUNT_BY_JOB_NAME = "SELECT COUNT(1) from %PREFIX%JOB_INSTANCE "
  			+ "where JOB_NAME=?";
  
  	/**
  	 * @see JdbcJobExecutionDao#afterPropertiesSet()
  	 */
  	@Override
  	public void afterPropertiesSet() throws Exception {
  
  		setJobIncrementer(new AbstractDataFieldMaxValueIncrementer() {
  			@Override
  			protected long getNextKey() {
  				return 0;
  			}
  		});
  
  		super.afterPropertiesSet();
  
  	}
  
  	/**
  	 * 
  	 * @see SearchableJobInstanceDao#countJobInstances (String)
  	 */
  	public int countJobInstances(String name) {
  		return getJdbcTemplate().queryForObject(getQuery(GET_COUNT_BY_JOB_NAME), Integer.class, name);
  	}
  
  }