Example usage for org.springframework.batch.item.file FlatFileItemReader setLineMapper

Introduction

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

Prototype

public void setLineMapper(LineMapper<T> lineMapper) 

Source Link

Document

Setter for line mapper.

Usage

From source file:com.cocktail.initializer.ItemReader.java

/**
 * Read items.//from  w  w  w.  ja  v a2s  . c o  m
 *
 * @param <I>
 *            the generic type
 * @param path
 *            the path
 * @param itemMapper
 *            the item mapper
 * @return the list
 * @throws Exception
 *             the exception
 */
public static <I> List<I> readItems(String path, FieldSetMapper<I> itemMapper) throws Exception {

    ClassPathResource resource = new ClassPathResource(path);
    Scanner scanner = new Scanner(resource.getInputStream());
    String line = scanner.nextLine();
    scanner.close();

    FlatFileItemReader<I> itemReader = new FlatFileItemReader<I>();
    itemReader.setResource(resource);

    // DelimitedLineTokenizer defaults to | as its delimiter
    DelimitedLineTokenizer tokenizer = new DelimitedLineTokenizer("|");
    tokenizer.setNames(line.split("\\|"));
    tokenizer.setStrict(false);

    DefaultLineMapper<I> lineMapper = new DefaultLineMapper<I>();
    lineMapper.setLineTokenizer(tokenizer);
    lineMapper.setFieldSetMapper(itemMapper);
    itemReader.setLineMapper(lineMapper);
    itemReader.setRecordSeparatorPolicy(new DefaultRecordSeparatorPolicy());
    itemReader.setLinesToSkip(1);
    itemReader.open(new ExecutionContext());

    List<I> items = new ArrayList<>();
    I item = null;

    do {

        item = itemReader.read();

        if (item != null) {
            items.add(item);
        }

    } while (item != null);

    return items;
}

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From source file:example.store.StoreInitializer.java

/**
 * Reads a file {@code starbucks.csv} from the class path and parses it into {@link Store} instances about to
 * persisted./*from   w  w w. j a  v a  2s. c o m*/
 *
 * @return
 * @throws Exception
 */
public static List<Store> readStores() throws Exception {

    ClassPathResource resource = new ClassPathResource("starbucks.csv");
    Scanner scanner = new Scanner(resource.getInputStream());
    String line = scanner.nextLine();
    scanner.close();

    FlatFileItemReader<Store> itemReader = new FlatFileItemReader<Store>();
    itemReader.setResource(resource);

    // DelimitedLineTokenizer defaults to comma as its delimiter
    DelimitedLineTokenizer tokenizer = new DelimitedLineTokenizer();
    tokenizer.setNames(line.split(","));
    tokenizer.setStrict(false);

    DefaultLineMapper<Store> lineMapper = new DefaultLineMapper<Store>();
    lineMapper.setLineTokenizer(tokenizer);
    lineMapper.setFieldSetMapper(StoreFieldSetMapper.INSTANCE);
    itemReader.setLineMapper(lineMapper);
    itemReader.setRecordSeparatorPolicy(new DefaultRecordSeparatorPolicy());
    itemReader.setLinesToSkip(1);
    itemReader.open(new ExecutionContext());

    List<Store> stores = new ArrayList<>();
    Store store = null;

    do {

        store = itemReader.read();

        if (store != null) {
            stores.add(store);
        }

    } while (store != null);

    return stores;
}

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From source file:example.springdata.rest.stores.StoreInitializer.java

/**
 * Reads a file {@code starbucks.csv} from the class path and parses it into {@link Store} instances about to
 * persisted./*  ww  w  .  j a  va2 s .  co m*/
 * 
 * @return
 * @throws Exception
 */
public static List<Store> readStores() throws Exception {

    ClassPathResource resource = new ClassPathResource("starbucks.csv");
    Scanner scanner = new Scanner(resource.getInputStream());
    String line = scanner.nextLine();
    scanner.close();

    FlatFileItemReader<Store> itemReader = new FlatFileItemReader<Store>();
    itemReader.setResource(resource);

    // DelimitedLineTokenizer defaults to comma as its delimiter
    DelimitedLineTokenizer tokenizer = new DelimitedLineTokenizer();
    tokenizer.setNames(line.split(","));
    tokenizer.setStrict(false);

    DefaultLineMapper<Store> lineMapper = new DefaultLineMapper<Store>();
    lineMapper.setFieldSetMapper(fields -> {

        Point location = new Point(fields.readDouble("Longitude"), fields.readDouble("Latitude"));
        Address address = new Address(fields.readString("Street Address"), fields.readString("City"),
                fields.readString("Zip"), location);

        return new Store(fields.readString("Name"), address);
    });

    lineMapper.setLineTokenizer(tokenizer);
    itemReader.setLineMapper(lineMapper);
    itemReader.setRecordSeparatorPolicy(new DefaultRecordSeparatorPolicy());
    itemReader.setLinesToSkip(1);
    itemReader.open(new ExecutionContext());

    List<Store> stores = new ArrayList<>();
    Store store = null;

    do {

        store = itemReader.read();

        if (store != null) {
            stores.add(store);
        }

    } while (store != null);

    return stores;
}

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From source file:io.spring.batch.configuration.BatchConfiguration.java

@Bean
@StepScope/*  w ww.j  a  va2s. c  o m*/
protected FlatFileItemReader<Customer> reader(@Value("#{jobParameters['fileName']}") Resource fileName)
        throws Exception {
    DefaultLineMapper<Customer> defaultLineMapper = new DefaultLineMapper<>();
    defaultLineMapper.setLineTokenizer(new DelimitedLineTokenizer());
    defaultLineMapper.setFieldSetMapper(new FieldSetMapper<Customer>() {
        @Override
        public Customer mapFieldSet(FieldSet fieldSet) throws BindException {
            Customer cust = new Customer();

            cust.setCustomerName(fieldSet.readString(0));
            cust.setQty(fieldSet.readInt(1));

            return cust;
        }
    });

    defaultLineMapper.afterPropertiesSet();

    FlatFileItemReader<Customer> reader = new FlatFileItemReader<>();
    reader.setLineMapper(defaultLineMapper);
    reader.setResource(fileName);
    reader.afterPropertiesSet();

    return reader;
}

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From source file:de.codecentric.batch.jobs.FlatFileJobConfiguration.java

@Bean
public ItemReader<String> reader() {
    FlatFileItemReader<String> reader = new FlatFileItemReader<String>();
    reader.setResource(new ClassPathResource("in-javaconfig.txt"));
    reader.setLineMapper(new PassThroughLineMapper());
    return reader;
}

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From source file:com.springsource.html5expense.config.BatchConfig.java

@Bean
@Scope("step")/*from w ww .j  ava 2 s.  c  o  m*/
public FlatFileItemReader reader(@Value("#{jobParameters[file]}") String resource) {

    File f = new File(this.batchFileDirectory, resource + ".csv");

    DelimitedLineTokenizer del = new DelimitedLineTokenizer();
    del.setNames("date,amount,category,merchant".split(","));
    del.setDelimiter(DelimitedLineTokenizer.DELIMITER_COMMA);

    DefaultLineMapper<FieldSet> defaultLineMapper = new DefaultLineMapper<FieldSet>();
    defaultLineMapper.setLineTokenizer(del);
    defaultLineMapper.setFieldSetMapper(new PassThroughFieldSetMapper());
    defaultLineMapper.afterPropertiesSet();

    FlatFileItemReader<FieldSet> fileItemReader = new FlatFileItemReader<FieldSet>();
    fileItemReader.setLineMapper(defaultLineMapper);
    fileItemReader.setResource(new FileSystemResource(f));

    return fileItemReader;
}

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From source file:de.codecentric.batch.jobs.FlatFileToDbNoSkipJobConfiguration.java

@Bean
@StepScope//w  ww . j a  va2  s.  c  o  m
public FlatFileItemReader<Item> flatFileItemReader(@Value("#{jobParameters[pathToFile]}") String pathToFile) {
    FlatFileItemReader<Item> itemReader = new FlatFileItemReader<Item>();
    itemReader.setLineMapper(lineMapper());
    itemReader.setResource(new FileSystemResource("src/test/resources/" + pathToFile));
    return itemReader;
}

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From source file:de.langmi.spring.batch.examples.readers.support.CompositeItemStreamReaderTest.java

/**
 * Helpermethod to create FlatFileItemReader, sets the name too, to make restart
 * scenario possible - otherwise one flatFileItemReader would overwrite the 
 * other (in context)./*from  www  . j  ava2  s.c o  m*/
 *
 * @param inputFile
 * @return configured FlatFileItemReader cast as ItemStreamReader
 */
private ItemStreamReader<String> createFlatFileItemReader(final String inputFile) {
    FlatFileItemReader<String> ffir = new FlatFileItemReader<String>();
    // init reader
    ffir.setLineMapper(new PassThroughLineMapper());
    ffir.setResource(new FileSystemResource(inputFile));
    ffir.setName(inputFile);

    return (ItemStreamReader<String>) ffir;
}

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From source file:de.langmi.spring.batch.examples.readers.file.zip.ZipMultiResourceItemReaderTest.java

/**
 * Helper method to setup the used MultiResourceItemReader.
 *
 * @param mReader//www.  j  a va  2s  . c o m
 * @throws Exception 
 */
private void generalMultiResourceReaderSetup(ZipMultiResourceItemReader<String> mReader) throws Exception {
    // setup delegate
    FlatFileItemReader<String> reader = new FlatFileItemReader<String>();
    reader.setLineMapper(new PassThroughLineMapper());
    mReader.setDelegate(reader);
}

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From source file:io.spring.marchmadness.MooreStatConfiguration.java

@Bean
public ItemReader<MooreNcaaStat> reader(ResourceLoader resourceLoader) {
    FlatFileItemReader<MooreNcaaStat> reader = new FlatFileItemReader<MooreNcaaStat>();
    reader.setResource(resourceLoader.getResource("file:" + inputFileName));
    reader.setLineMapper(new DefaultLineMapper<MooreNcaaStat>() {
        {/*from   w ww . ja  va 2  s  .c o m*/
            setLineTokenizer(new DelimitedLineTokenizer() {
                {
                    setNames(new String[] { "year", "rank", "name", "win", "loss", "tie", "sos", "pr" });
                }
            });
            setFieldSetMapper(new BeanWrapperFieldSetMapper<MooreNcaaStat>() {
                {
                    setTargetType(MooreNcaaStat.class);
                }
            });
        }
    });
    return reader;
}

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