/*
 * 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.core.repository.dao;

import org.springframework.beans.factory.InitializingBean;
import org.springframework.jdbc.core.simple.SimpleJdbcOperations;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;

/**
 * Encapsulates common functionality needed by JDBC batch metadata DAOs -
 * provides jdbcTemplate for subclasses and handles table prefixes.
 * 
 * @author Robert Kasanicky
 */
public abstract class AbstractJdbcBatchMetadataDao implements InitializingBean {

	/**
	 * Default value for the table prefix property.
	 */
	public static final String DEFAULT_TABLE_PREFIX = "BATCH_";
	
	public static final int DEFAULT_EXIT_MESSAGE_LENGTH = 2500;

	private String tablePrefix = DEFAULT_TABLE_PREFIX;

	private SimpleJdbcOperations jdbcTemplate;

	protected String getQuery(String base) {
		return StringUtils.replace(base, "%PREFIX%", tablePrefix);
	}
	
	protected String getTablePrefix() {
		return tablePrefix;
	}

	/**
	 * Public setter for the table prefix property. This will be prefixed to all
	 * the table names before queries are executed. Defaults to
	 * {@link #DEFAULT_TABLE_PREFIX}.
	 * 
	 * @param tablePrefix the tablePrefix to set
	 */
	public void setTablePrefix(String tablePrefix) {
		this.tablePrefix = tablePrefix;
	}

	public void setJdbcTemplate(SimpleJdbcOperations jdbcTemplate) {
		this.jdbcTemplate = jdbcTemplate;
	}

	protected SimpleJdbcOperations getJdbcTemplate() {
		return jdbcTemplate;
	}

	public void afterPropertiesSet() throws Exception {
		Assert.notNull(jdbcTemplate);
	}

}
