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

Introduction

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

Prototype

public void setComments(String[] comments) 

Source Link

Document

Setter for comment prefixes.

Usage

From source file:org.springframework.batch.item.file.builder.FlatFileItemReaderBuilder.java

/**
 * Builds the {@link FlatFileItemReader}.
 *
 * @return a {@link FlatFileItemReader}//ww  w  . j av  a2  s .co  m
 * @throws Exception
 */
public FlatFileItemReader<T> build() throws Exception {
    if (this.saveState) {
        Assert.state(StringUtils.hasText(this.name), "A name is required when saveSate is set to true.");
    }

    if (this.resource == null) {
        logger.debug("The resource is null.  This is only a valid scenario when "
                + "injecting it later as in when using the MultiResourceItemReader");
    }

    Assert.notNull(this.recordSeparatorPolicy, "A RecordSeparatorPolicy is required.");
    int validatorValue = this.tokenizerValidator.intValue();
    Assert.state(validatorValue == 1 || validatorValue == 2 || validatorValue == 4,
            "Only one LineTokenizer option may be configured");

    FlatFileItemReader<T> reader = new FlatFileItemReader<>();

    if (StringUtils.hasText(this.name)) {
        reader.setName(this.name);
    }

    reader.setResource(this.resource);

    if (this.lineMapper != null) {
        reader.setLineMapper(this.lineMapper);
    } else {
        DefaultLineMapper<T> lineMapper = new DefaultLineMapper<>();

        if (this.lineTokenizer != null && this.fieldSetMapper != null) {
            lineMapper.setLineTokenizer(this.lineTokenizer);
        } else if (this.fixedLengthBuilder != null) {
            lineMapper.setLineTokenizer(this.fixedLengthBuilder.build());
        } else if (this.delimitedBuilder != null) {
            lineMapper.setLineTokenizer(this.delimitedBuilder.build());
        } else {
            throw new IllegalStateException("No LineTokenizer implementation was provided.");
        }

        if (this.targetType != null || StringUtils.hasText(this.prototypeBeanName)) {
            BeanWrapperFieldSetMapper<T> mapper = new BeanWrapperFieldSetMapper<>();
            mapper.setTargetType(this.targetType);
            mapper.setPrototypeBeanName(this.prototypeBeanName);
            mapper.setStrict(this.beanMapperStrict);
            mapper.setBeanFactory(this.beanFactory);
            mapper.setDistanceLimit(this.distanceLimit);
            mapper.setCustomEditors(this.customEditors);
            mapper.afterPropertiesSet();

            lineMapper.setFieldSetMapper(mapper);
        } else if (this.fieldSetMapper != null) {
            lineMapper.setFieldSetMapper(this.fieldSetMapper);
        } else {
            throw new IllegalStateException("No FieldSetMapper implementation was provided.");
        }

        reader.setLineMapper(lineMapper);
    }

    reader.setLinesToSkip(this.linesToSkip);

    if (!this.comments.isEmpty()) {
        reader.setComments(this.comments.toArray(new String[this.comments.size()]));
    }

    reader.setSkippedLinesCallback(this.skippedLinesCallback);
    reader.setRecordSeparatorPolicy(this.recordSeparatorPolicy);
    reader.setMaxItemCount(this.maxItemCount);
    reader.setSaveState(this.saveState);
    reader.setStrict(this.strict);

    return reader;
}

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