Example usage for org.springframework.batch.item.file.transform DelimitedLineAggregator DelimitedLineAggregator

Introduction

In this page you can find the example usage for org.springframework.batch.item.file.transform DelimitedLineAggregator DelimitedLineAggregator.

Prototype

DelimitedLineAggregator

Source Link

Usage

From source file:be.ordina.springbatch.batch.writer.FineInformationWriter.java

public FineInformationWriter() {
    this.setResource(new FileSystemResource("src/main/resources/output.csv"));
    BeanWrapperFieldExtractor<Fine> fieldExtractor = new BeanWrapperFieldExtractor<>();
    fieldExtractor.setNames(new String[] { "licensePlate", "speed", "amountToPay", "graveError" });
    DelimitedLineAggregator<Fine> delLineAgg = new DelimitedLineAggregator<>();
    delLineAgg.setDelimiter(",");
    delLineAgg.setFieldExtractor(fieldExtractor);
    this.setLineAggregator(delLineAgg);
}

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From source file:uk.ac.ebi.eva.pipeline.io.writers.VepInputFlatFileWriter.java

/**
 * @return must return a {@link FlatFileItemWriter} and not a {@link org.springframework.batch.item.ItemWriter}
 * {@see https://jira.spring.io/browse/BATCH-2097
 *
 * TODO: The variant list should be compressed
 *//*from www . ja va2s .  c om*/
public VepInputFlatFileWriter(File file) {
    super();

    BeanWrapperFieldExtractor<VariantWrapper> fieldExtractor = new BeanWrapperFieldExtractor<>();
    fieldExtractor.setNames(new String[] { "chr", "start", "end", "refAlt", "strand" });

    DelimitedLineAggregator<VariantWrapper> delLineAgg = new DelimitedLineAggregator<>();
    delLineAgg.setDelimiter("\t");
    delLineAgg.setFieldExtractor(fieldExtractor);

    setResource(new FileSystemResource(file));
    setAppendAllowed(false);
    setShouldDeleteIfExists(true);
    setLineAggregator(delLineAgg);
}

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From source file:org.springframework.batch.admin.sample.LeadRandomizer.java

@Test
public void testLeads() throws Exception {

    FlatFileItemReader<FieldSet> reader = new FlatFileItemReader<FieldSet>();
    reader.setResource(new ClassPathResource("/data/test.txt"));
    DefaultLineMapper<FieldSet> lineMapper = new DefaultLineMapper<FieldSet>();
    lineMapper.setLineTokenizer(new DelimitedLineTokenizer());
    lineMapper.setFieldSetMapper(new PassThroughFieldSetMapper());
    reader.setLinesToSkip(1);//from   w  w w  . j  a va  2  s  . co m
    final List<String> headers = new ArrayList<String>();
    reader.setSkippedLinesCallback(new LineCallbackHandler() {
        public void handleLine(String line) {
            headers.add(line);
        }
    });
    reader.setLineMapper(lineMapper);
    reader.open(new ExecutionContext());

    List<FieldSet> list = new ArrayList<FieldSet>();
    FieldSet item = reader.read();
    while (item != null) {
        list.add(item);
        item = reader.read();
    }
    assertEquals(7, list.size());

    FlatFileItemWriter<FieldSet> writer = new FlatFileItemWriter<FieldSet>();
    FileSystemResource resource = new FileSystemResource("target/output/output.txt");
    FileUtils.deleteQuietly(resource.getFile());
    writer.setResource(resource);
    writer.setHeaderCallback(new FlatFileHeaderCallback() {
        public void writeHeader(Writer writer) throws IOException {
            for (String header : headers) {
                writer.write(header);
            }
        }
    });
    writer.setLineAggregator(new DelimitedLineAggregator<FieldSet>());
    writer.open(new ExecutionContext());

    String[] names = getFields(list, 1);
    String[] country = getFields(list, 2);
    String[] products = getFields(list, 3);
    double[] amounts = getMinMax(list, 4);

    NumberFormat formatter = new DecimalFormat("#.##");
    int count = 20;
    for (int i = 0; i < 100; i++) {
        List<FieldSet> items = new ArrayList<FieldSet>();
        for (FieldSet fieldSet : list) {
            String[] values = fieldSet.getValues();
            values[0] = "" + (count++);
            values[1] = choose(names);
            values[2] = choose(country);
            values[3] = choose(products);
            values[4] = formatter.format(random(amounts));
            items.add(new DefaultFieldSet(values));
        }
        writer.write(items);
    }
    writer.close();

}

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