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

Introduction

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

Prototype

public void setPrototypeBeanName(String name) 

Source Link

Document

The bean name (id) for an object that can be populated from the field set that will be passed into #mapFieldSet(FieldSet) .

Usage

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

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