Files
design-patterns/03-behavioral/template-method/CsvMigration.java

28 lines
731 B
Java

package template;
public class CsvMigration extends DataMigration {
private final String filePath;
public CsvMigration(String filePath) { this.filePath = filePath; }
@Override protected String getSourceName() { return "CSV:" + filePath; }
@Override
protected void connect() {
System.out.println(" Opening CSV file: " + filePath);
}
@Override
protected int readData() {
System.out.println(" Parsing CSV rows...");
return 1_500; // simulated row count
}
@Override
protected int transformData(int rawCount) {
System.out.println(" Mapping CSV columns to target schema (" + rawCount + " rows)...");
return rawCount; // no rows lost
}
}