Example usage for org.springframework.batch.item.file.mapping BeanWrapperFieldSetMapper setDistanceLimit

Introduction

In this page you can find the example usage for org.springframework.batch.item.file.mapping BeanWrapperFieldSetMapper setDistanceLimit.

Prototype

public void setDistanceLimit(int distanceLimit) 

Source Link

Document

The maximum difference that can be tolerated in spelling between input key names and bean property names.

Usage

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

/**
 * Builds the {@link FlatFileItemReader}.
 *
 * @return a {@link FlatFileItemReader}//from w  w  w  . j  av  a2s. 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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