com.univocity.parsers.common.processor
Class BatchedObjectColumnProcessor

java.lang.Object
  com.univocity.parsers.common.DefaultConversionProcessor
      com.univocity.parsers.common.processor.core.AbstractObjectProcessor<T>
          com.univocity.parsers.common.processor.core.AbstractBatchedObjectColumnProcessor<ParsingContext>
              com.univocity.parsers.common.processor.BatchedObjectColumnProcessor

All Implemented Interfaces:

ConversionProcessor, Processor<ParsingContext>, RowProcessor

public abstract class BatchedObjectColumnProcessor
extends AbstractBatchedObjectColumnProcessor<ParsingContext>
implements RowProcessor

A RowProcessor implementation for converting batches of rows extracted from any implementation of AbstractParser into columns of objects.

This uses the value conversions provided by Conversion instances.

For each row processed, a sequence of conversions will be executed to generate the appropriate object. Each resulting object will then be stored in a list that contains the values of the corresponding column.

During the execution of the process, the AbstractBatchedObjectColumnProcessor.batchProcessed(int) method will be invoked after a given number of rows has been processed.

The user can access the lists with values parsed for all columns using the methods AbstractBatchedObjectColumnProcessor.getColumnValuesAsList(), AbstractBatchedObjectColumnProcessor.getColumnValuesAsMapOfIndexes() and AbstractBatchedObjectColumnProcessor.getColumnValuesAsMapOfNames().

After AbstractBatchedObjectColumnProcessor.batchProcessed(int) is invoked, all values will be discarded and the next batch of column values will be accumulated. This process will repeat until there's no more rows in the input.

Author:

uniVocity Software Pty Ltd - parsers@univocity.com

See Also:

AbstractParser, RowProcessor, AbstractBatchedColumnProcessor, Conversion

Constructor Summary

BatchedObjectColumnProcessor(int rowsPerBatch)
Constructs a batched column processor configured to invoke the AbstractBatchedObjectColumnProcessor.batchesProcessed method after a given number of rows has been processed.

Method Summary

Methods inherited from class com.univocity.parsers.common.processor.core.AbstractBatchedObjectColumnProcessor

batchProcessed, getBatchesProcessed, getColumn, getColumn, getColumn, getColumn, getColumnValuesAsList, getColumnValuesAsMapOfIndexes, getColumnValuesAsMapOfNames, getHeaders, getRowsPerBatch, processEnded, processStarted, putColumnValuesInMapOfIndexes, putColumnValuesInMapOfNames, rowProcessed

Methods inherited from class com.univocity.parsers.common.processor.core.AbstractObjectProcessor

rowProcessed

Methods inherited from class com.univocity.parsers.common.DefaultConversionProcessor

applyConversions, convertAll, convertFields, convertIndexes, convertType, handleConversionError, initializeConversions, reverseConversions, toDataProcessingException

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.univocity.parsers.common.processor.RowProcessor

processEnded, processStarted, rowProcessed

Constructor Detail

BatchedObjectColumnProcessor

public BatchedObjectColumnProcessor(int rowsPerBatch)

Constructs a batched column processor configured to invoke the AbstractBatchedObjectColumnProcessor.batchesProcessed method after a given number of rows has been processed.

Parameters:

rowsPerBatch - the number of rows to process in each batch.