| 1 | package org.springframework.batch.core.repository.dao; |
| 2 | |
| 3 | import java.sql.ResultSet; |
| 4 | import java.sql.SQLException; |
| 5 | import java.sql.Types; |
| 6 | import java.util.List; |
| 7 | |
| 8 | import org.apache.commons.logging.Log; |
| 9 | import org.apache.commons.logging.LogFactory; |
| 10 | import org.springframework.batch.core.BatchStatus; |
| 11 | import org.springframework.batch.core.JobExecution; |
| 12 | import org.springframework.batch.core.JobInstance; |
| 13 | import org.springframework.batch.repeat.ExitStatus; |
| 14 | import org.springframework.beans.factory.InitializingBean; |
| 15 | import org.springframework.jdbc.core.RowMapper; |
| 16 | import org.springframework.jdbc.support.incrementer.DataFieldMaxValueIncrementer; |
| 17 | import org.springframework.util.Assert; |
| 18 | |
| 19 | /** |
| 20 | * Jdbc implementation of {@link JobExecutionDao}. Uses sequences (via Spring's |
| 21 | * {@link DataFieldMaxValueIncrementer} abstraction) to create all primary keys |
| 22 | * before inserting a new row. Objects are checked to ensure all mandatory |
| 23 | * fields to be stored are not null. If any are found to be null, an |
| 24 | * IllegalArgumentException will be thrown. This could be left to JdbcTemplate, |
| 25 | * however, the exception will be fairly vague, and fails to highlight which |
| 26 | * field caused the exception. |
| 27 | * |
| 28 | * @author Lucas Ward |
| 29 | * @author Dave Syer |
| 30 | * @author Robert Kasanicky |
| 31 | */ |
| 32 | public class JdbcJobExecutionDao extends AbstractJdbcBatchMetadataDao implements JobExecutionDao, InitializingBean { |
| 33 | |
| 34 | private static final Log logger = LogFactory.getLog(JdbcJobExecutionDao.class); |
| 35 | |
| 36 | private static final int EXIT_MESSAGE_LENGTH = 250; |
| 37 | |
| 38 | private static final String GET_JOB_EXECUTION_COUNT = "SELECT count(JOB_EXECUTION_ID) from %PREFIX%JOB_EXECUTION " |
| 39 | + "where JOB_INSTANCE_ID = ?"; |
| 40 | |
| 41 | private static final String SAVE_JOB_EXECUTION = "INSERT into %PREFIX%JOB_EXECUTION(JOB_EXECUTION_ID, JOB_INSTANCE_ID, START_TIME, " |
| 42 | + "END_TIME, STATUS, CONTINUABLE, EXIT_CODE, EXIT_MESSAGE, VERSION) values (?, ?, ?, ?, ?, ?, ?, ?, ?)"; |
| 43 | |
| 44 | private static final String CHECK_JOB_EXECUTION_EXISTS = "SELECT COUNT(*) FROM %PREFIX%JOB_EXECUTION WHERE JOB_EXECUTION_ID = ?"; |
| 45 | |
| 46 | private static final String UPDATE_JOB_EXECUTION = "UPDATE %PREFIX%JOB_EXECUTION set START_TIME = ?, END_TIME = ?, " |
| 47 | + " STATUS = ?, CONTINUABLE = ?, EXIT_CODE = ?, EXIT_MESSAGE = ?, VERSION = ? where JOB_EXECUTION_ID = ?"; |
| 48 | |
| 49 | private static final String FIND_JOB_EXECUTIONS = "SELECT JOB_EXECUTION_ID, START_TIME, END_TIME, STATUS, CONTINUABLE, EXIT_CODE, EXIT_MESSAGE from %PREFIX%JOB_EXECUTION" |
| 50 | + " where JOB_INSTANCE_ID = ?"; |
| 51 | |
| 52 | private static final String GET_LAST_EXECUTION = "SELECT JOB_EXECUTION_ID, START_TIME, END_TIME, STATUS, CONTINUABLE, EXIT_CODE, EXIT_MESSAGE from %PREFIX%JOB_EXECUTION" |
| 53 | + " where JOB_INSTANCE_ID = ? and START_TIME = (SELECT max(START_TIME) from %PREFIX%JOB_EXECUTION where JOB_INSTANCE_ID = ?)"; |
| 54 | |
| 55 | private DataFieldMaxValueIncrementer jobExecutionIncrementer; |
| 56 | |
| 57 | public List findJobExecutions(final JobInstance job) { |
| 58 | |
| 59 | Assert.notNull(job, "Job cannot be null."); |
| 60 | Assert.notNull(job.getId(), "Job Id cannot be null."); |
| 61 | |
| 62 | return getJdbcTemplate().query(getQuery(FIND_JOB_EXECUTIONS), new Object[] { job.getId() }, |
| 63 | new JobExecutionRowMapper(job)); |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * @see JobExecutionDao#getJobExecutionCount(JobInstance) |
| 68 | * @throws IllegalArgumentException if jobId is null. |
| 69 | */ |
| 70 | public int getJobExecutionCount(JobInstance jobInstance) { |
| 71 | Long jobId = jobInstance.getId(); |
| 72 | Assert.notNull(jobId, "JobId cannot be null"); |
| 73 | |
| 74 | Object[] parameters = new Object[] { jobId }; |
| 75 | |
| 76 | return getJdbcTemplate().queryForInt(getQuery(GET_JOB_EXECUTION_COUNT), parameters); |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * |
| 81 | * SQL implementation using Sequences via the Spring incrementer |
| 82 | * abstraction. Once a new id has been obtained, the JobExecution is saved |
| 83 | * via a SQL INSERT statement. |
| 84 | * |
| 85 | * @see JobExecutionDao#saveJobExecution(JobExecution) |
| 86 | * @throws IllegalArgumentException if jobExecution is null, as well as any |
| 87 | * of it's fields to be persisted. |
| 88 | */ |
| 89 | public void saveJobExecution(JobExecution jobExecution) { |
| 90 | |
| 91 | validateJobExecution(jobExecution); |
| 92 | |
| 93 | jobExecution.incrementVersion(); |
| 94 | |
| 95 | jobExecution.setId(new Long(jobExecutionIncrementer.nextLongValue())); |
| 96 | Object[] parameters = new Object[] { jobExecution.getId(), jobExecution.getJobId(), |
| 97 | jobExecution.getStartTime(), jobExecution.getEndTime(), jobExecution.getStatus().toString(), |
| 98 | jobExecution.getExitStatus().isContinuable() ? "Y" : "N", jobExecution.getExitStatus().getExitCode(), |
| 99 | jobExecution.getExitStatus().getExitDescription(), jobExecution.getVersion() }; |
| 100 | getJdbcTemplate().update( |
| 101 | getQuery(SAVE_JOB_EXECUTION), |
| 102 | parameters, |
| 103 | new int[] { Types.INTEGER, Types.INTEGER, Types.TIMESTAMP, Types.TIMESTAMP, Types.VARCHAR, Types.CHAR, |
| 104 | Types.VARCHAR, Types.VARCHAR, Types.INTEGER }); |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * Validate JobExecution. At a minimum, JobId, StartTime, EndTime, and |
| 109 | * Status cannot be null. |
| 110 | * |
| 111 | * @param jobExecution |
| 112 | * @throws IllegalArgumentException |
| 113 | */ |
| 114 | private void validateJobExecution(JobExecution jobExecution) { |
| 115 | |
| 116 | Assert.notNull(jobExecution); |
| 117 | Assert.notNull(jobExecution.getJobId(), "JobExecution Job-Id cannot be null."); |
| 118 | Assert.notNull(jobExecution.getStatus(), "JobExecution status cannot be null."); |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * Update given JobExecution using a SQL UPDATE statement. The JobExecution |
| 123 | * is first checked to ensure all fields are not null, and that it has an |
| 124 | * ID. The database is then queried to ensure that the ID exists, which |
| 125 | * ensures that it is valid. |
| 126 | * |
| 127 | * @see JobExecutionDao#updateJobExecution(JobExecution) |
| 128 | */ |
| 129 | public void updateJobExecution(JobExecution jobExecution) { |
| 130 | |
| 131 | validateJobExecution(jobExecution); |
| 132 | |
| 133 | jobExecution.incrementVersion(); |
| 134 | |
| 135 | String exitDescription = jobExecution.getExitStatus().getExitDescription(); |
| 136 | if (exitDescription != null && exitDescription.length() > EXIT_MESSAGE_LENGTH) { |
| 137 | exitDescription = exitDescription.substring(0, EXIT_MESSAGE_LENGTH); |
| 138 | logger.debug("Truncating long message before update of JobExecution: " + jobExecution); |
| 139 | } |
| 140 | Object[] parameters = new Object[] { jobExecution.getStartTime(), jobExecution.getEndTime(), |
| 141 | jobExecution.getStatus().toString(), jobExecution.getExitStatus().isContinuable() ? "Y" : "N", |
| 142 | jobExecution.getExitStatus().getExitCode(), exitDescription, jobExecution.getVersion(), |
| 143 | jobExecution.getId() }; |
| 144 | |
| 145 | if (jobExecution.getId() == null) { |
| 146 | throw new IllegalArgumentException("JobExecution ID cannot be null. JobExecution must be saved " |
| 147 | + "before it can be updated."); |
| 148 | } |
| 149 | |
| 150 | // Check if given JobExecution's Id already exists, if none is found it |
| 151 | // is invalid and |
| 152 | // an exception should be thrown. |
| 153 | if (getJdbcTemplate().queryForInt(getQuery(CHECK_JOB_EXECUTION_EXISTS), new Object[] { jobExecution.getId() }) != 1) { |
| 154 | throw new NoSuchObjectException("Invalid JobExecution, ID " + jobExecution.getId() + " not found."); |
| 155 | } |
| 156 | |
| 157 | getJdbcTemplate().update( |
| 158 | getQuery(UPDATE_JOB_EXECUTION), |
| 159 | parameters, |
| 160 | new int[] { Types.TIMESTAMP, Types.TIMESTAMP, Types.VARCHAR, Types.CHAR, Types.VARCHAR, Types.VARCHAR, |
| 161 | Types.INTEGER, Types.INTEGER }); |
| 162 | } |
| 163 | |
| 164 | /** |
| 165 | * Setter for {@link DataFieldMaxValueIncrementer} to be used when |
| 166 | * generating primary keys for {@link JobExecution} instances. |
| 167 | * |
| 168 | * @param jobExecutionIncrementer the {@link DataFieldMaxValueIncrementer} |
| 169 | */ |
| 170 | public void setJobExecutionIncrementer(DataFieldMaxValueIncrementer jobExecutionIncrementer) { |
| 171 | this.jobExecutionIncrementer = jobExecutionIncrementer; |
| 172 | } |
| 173 | |
| 174 | public void afterPropertiesSet() throws Exception { |
| 175 | super.afterPropertiesSet(); |
| 176 | Assert.notNull(jobExecutionIncrementer); |
| 177 | } |
| 178 | |
| 179 | /** |
| 180 | * Re-usable mapper for {@link JobExecution} instances. |
| 181 | * |
| 182 | * @author Dave Syer |
| 183 | * |
| 184 | */ |
| 185 | private static class JobExecutionRowMapper implements RowMapper { |
| 186 | |
| 187 | private JobInstance job; |
| 188 | |
| 189 | public JobExecutionRowMapper(JobInstance job) { |
| 190 | super(); |
| 191 | this.job = job; |
| 192 | } |
| 193 | |
| 194 | public Object mapRow(ResultSet rs, int rowNum) throws SQLException { |
| 195 | JobExecution jobExecution = new JobExecution(job); |
| 196 | jobExecution.setId(new Long(rs.getLong(1))); |
| 197 | jobExecution.setStartTime(rs.getTimestamp(2)); |
| 198 | jobExecution.setEndTime(rs.getTimestamp(3)); |
| 199 | jobExecution.setStatus(BatchStatus.getStatus(rs.getString(4))); |
| 200 | jobExecution.setExitStatus(new ExitStatus("Y".equals(rs.getString(5)), rs.getString(6), rs.getString(7))); |
| 201 | return jobExecution; |
| 202 | } |
| 203 | |
| 204 | } |
| 205 | |
| 206 | public JobExecution getLastJobExecution(JobInstance jobInstance) { |
| 207 | |
| 208 | Long id = jobInstance.getId(); |
| 209 | |
| 210 | List executions = getJdbcTemplate().query(getQuery(GET_LAST_EXECUTION), new Object[] { id, id }, |
| 211 | new JobExecutionRowMapper(jobInstance)); |
| 212 | |
| 213 | Assert.state(executions.size() <= 1, "There must be at most one latest job execution"); |
| 214 | |
| 215 | if (executions.isEmpty()) { |
| 216 | return null; |
| 217 | } |
| 218 | else { |
| 219 | return (JobExecution) executions.get(0); |
| 220 | } |
| 221 | } |
| 222 | |
| 223 | } |