xqt.adapters.csv.test.ExcelTest.java Source code

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Here is the source code for xqt.adapters.csv.test.ExcelTest.java

Source

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package xqt.adapters.csv.test;

import xqt.adapters.csv.reader.RowBuilder;
import java.io.File;
import java.io.FileInputStream;
import java.util.List;
import java.util.Spliterator;
import java.util.Spliterators;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import java.util.stream.StreamSupport;
import org.apache.poi.ss.usermodel.FormulaEvaluator;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

/**
 *
 * @author Javad Chamanara <chamanara@gmail.com>
 */
public class ExcelTest {

    public void read() {
        try {
            FileInputStream file = new FileInputStream(new File("C:\\Users\\standard\\Downloads\\javaTest.xlsx"));
            //Create Workbook instance holding reference to .xlsx file
            XSSFWorkbook workbook = new XSSFWorkbook(file);

            //Get first/desired sheet from the workbook
            XSSFSheet sheet = workbook.getSheet("Sheet1"); //workbook.getSheet("test");
            //            Stream stream = StreamSupport.stream(sheet.spliterator(), false); // maybe it is better to have a limited size stream by passing the sheet.getPhysicalNumberOfRows()

            Stream<Row> stream = StreamSupport.stream(Spliterators.spliterator(sheet.iterator(),
                    sheet.getPhysicalNumberOfRows(), Spliterator.ORDERED), false);

            //long cnt = stream.count();
            stream = stream.skip(1);
            FormulaEvaluator evaluator = workbook.getCreationHelper().createFormulaEvaluator();
            //Iterable<Row> iterable = () -> sheet.iterator();
            List<Entity> result = stream.filter(row -> (!row.getZeroHeight()))
                    .map(row -> RowBuilder.createRowArray(row, evaluator)).map(rowArray -> new Entity(rowArray))
                    .peek(p -> {
                        System.out.println("");
                    }).collect(Collectors.toList());
            long count = result.stream().count();
            System.out.println("Total records: " + count);
            file.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public class Entity {
        String[] values;

        public Entity(String[] values) {
            this.values = values;
        }
    }

}