Examples of org.springframework.batch.item.ExecutionContext

org.springframework.batch.item.ExecutionContext
Object representing a context for an {@link ItemStream}. It is a thin wrapper for a map that allows optionally for type safety on reads. It also allows for dirty checking by setting a 'dirty' flag whenever any put is called. Note that putting null value is equivalent to removing the entry for the given key. @author Lucas Ward @author Douglas Kaminsky

   * @param split the split
   * @return the execution context
   * @throws IOException Signals that an I/O exception has occurred.
   */
  protected ExecutionContext createExecutionContext(Path path, Split split) throws IOException {
    ExecutionContext context = new ExecutionContext();
    context.putString(getKeyFileName(), path.toUri().getPath());
    context.putLong(getKeySplitStart(), split.getStart());
    context.putLong(getKeySplitLength(), split.getLength());
    if (split instanceof SplitLocation) {
      context.putString(getKeySplitLocations(), StringUtils.collectionToCommaDelimitedString(Arrays
          .asList(((SplitLocation) split).getLocations())));
    }
    return context;
  }

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    DataStoreReader<String> reader = new TextFileReader(configuration, path, null, null, null);
    DataStoreItemReader<String> itemReader = new DataStoreItemReader<String>();
    itemReader.setDataStoreReader(reader);
    itemReader.setLineDataMapper(new PassThroughLineDataMapper());


    ExecutionContext context = new ExecutionContext();
    context.putLong(DataStoreItemReader.READ_POSITION, 150);
    itemReader.open(context);


    int count = 0;
    while (itemReader.read() != null) {
      count++;

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        assertEquals(secondStepExec, jobRepository.getLastStepExecution(secondJobExec.getJobInstance(), step.getName()));
    }


    @Test
    public void testSaveExecutionContext() throws Exception {
        ExecutionContext ctx = new ExecutionContext();
        ctx.putLong("crashedPosition", 7);
        JobExecution jobExec = jobRepository.createJobExecution(job.getName(), jobParameters);
        jobExec.setStartTime(new Date(0));
        jobExec.setExecutionContext(ctx);
        Step step = new StepSupport("step1");
        StepExecution stepExec = new StepExecution(step.getName(), jobExec);

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    DataStoreReader<String> reader = new TextFileReader(configuration, path, null, null, null);
    DataStoreItemReader<String> itemReader = new DataStoreItemReader<String>();
    itemReader.setDataStoreReader(reader);
    itemReader.setLineDataMapper(new PassThroughLineDataMapper());


    ExecutionContext context = new ExecutionContext();
    context.putLong(DataStoreItemReader.READ_POSITION, 300);
    itemReader.open(context);


    int count = 0;
    while (itemReader.read() != null) {
      count++;

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    DataStoreReader<String> reader = new TextFileReader(configuration, path, null, null, null);
    DataStoreItemReader<String> itemReader = new DataStoreItemReader<String>();
    itemReader.setDataStoreReader(reader);
    itemReader.setLineDataMapper(new PassThroughLineDataMapper());


    ExecutionContext context = new ExecutionContext();
    context.putLong(DataStoreItemReader.READ_POSITION, 301);
    itemReader.open(context);
  }

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    while (itemReader.read() != null) {
      count++;
    }
    assertThat(count, is(300));


    ExecutionContext context = new ExecutionContext();
    itemReader.update(context);
    assertThat(context.getLong(DataStoreItemReader.READ_POSITION), is(300l));
  }

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        // should we throw error if null?
        map.put(key, value);
      }
    }


    return new ExecutionContext(map);
  }

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    if(type.terminateOnly.booleanValue()) {
      stepExecution.setTerminateOnly();
    }
    stepExecution.setFilterCount(type.filterCount);


    ExecutionContext executionContext = convertExecutionContextType(type.executionContext);
    stepExecution.setExecutionContext(executionContext);


    return stepExecution;
  }

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      StepExecution convertStepExecutionType = convertStepExecutionType(stepExecutionType);
      stepExecutions.add(convertStepExecutionType);
    }
    jobExecution.addStepExecutions(stepExecutions);


    ExecutionContext executionContext = convertExecutionContextType(type.executionContext);


    jobExecution.setExecutionContext(executionContext);


    return jobExecution;
  }

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  private static void saveJobStats(Job job, StepExecution stepExecution) {
    if (stepExecution == null) {
      return;
    }
    ExecutionContext executionContext = stepExecution.getExecutionContext();
    String statusPrefix = "Job Status::";
    executionContext.put(statusPrefix + "ID", JobUtils.getJobId(job).toString());
    executionContext.put(statusPrefix + "Name", job.getJobName());
    executionContext.put(statusPrefix + "Tracking URL", job.getTrackingURL());
    executionContext.put(statusPrefix + "State", JobUtils.getStatus(job).toString());
    try {
      for (String cgName : job.getCounters().getGroupNames()) {
        CounterGroup group = job.getCounters().getGroup(cgName);
        Iterator<Counter> ci = group.iterator();
        while (ci.hasNext()) {
          Counter c = ci.next();
          executionContext.put(group.getDisplayName().trim() + "::" + c.getDisplayName().trim(), c.getValue());
        }
      }
    } catch (Exception ignore) {}
  }

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