Write my own filter or validator
/*
* Copyright (c) 2006-2008 North Concepts Inc. All rights reserved.
* Proprietary and Confidential. Use is subject to license terms.
*
* http://northconcepts.com/data-pipeline/licensing/
*
*/
package com.northconcepts.datapipeline.examples.cookbook.customization;
import java.io.File;
import com.northconcepts.datapipeline.core.DataReader;
import com.northconcepts.datapipeline.core.StreamWriter;
import com.northconcepts.datapipeline.csv.CSVReader;
import com.northconcepts.datapipeline.filter.FilteringReader;
import com.northconcepts.datapipeline.job.JobTemplate;
import com.northconcepts.datapipeline.transform.BasicFieldTransformer;
import com.northconcepts.datapipeline.transform.TransformingReader;
import com.northconcepts.datapipeline.validate.ValidatingReader;
public class WriteMyOwnFilterOrValidator {
public static void main(String[] args) throws Throwable {
DataReader reader = new CSVReader(new File("credit-balance.csv"))
.setFieldNamesInFirstRow(true);
// convert balance from string to double
reader = new TransformingReader(reader)
.add(new BasicFieldTransformer("Balance").stringToDouble());
// ensure all balances are 0.0 or more
reader = new ValidatingReader(reader)
.setExceptionOnFailure(true)
.add(new MyFilter(0.0));
// retain balances over $1000.00
reader = new FilteringReader(reader)
.add(new MyFilter(1000.0));
JobTemplate.DEFAULT.transfer(reader, new StreamWriter(System.out));
}
}
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