ex8_12.txt

j2ee core design patterns

Example 8.12 	TORowMapper.java: A Sample Implementation
package com.corej2eepatterns.util;

// imports
public class TORowMapper {

	// create Customer TO
	public CustomerTO createCustomerTO(RowSet rowSet) {
		CustomerTO to = new CustomerTO();
		to.setId(getString(rowSet), 0);
		to.setName(getString(rowSet), 1);
		. . .
	}

	// create other TOs
	. . .

	// implement primitive methods used by create methods
	protected boolean wasNull(RowSet rowSet) {
		try {
			return rowSet.wasNull();
		} catch (SQLException e) {
			throw new RuntimeException(e.getMessage());
		}
	}

	protected String getString(RowSet rowSet, int columnIndex) {
		try {
			return rowSet.getString(columnIndex);
		} catch (SQLException e) {
			throw new RuntimeException(e.getMessage());
		}
	}

	protected boolean getBoolean(
			RowSet rowSet, int columnIndex) {
		try {
			return rowSet.getBoolean(columnIndex);
		} catch (SQLException e) {
			throw new RuntimeException(e.getMessage());
		}
	}

	protected java.util.Date getDate(
			RowSet rowSet, int columnIndex) {
		try {
			return rowSet.getDate(columnIndex);
		} catch (SQLException e) {
			throw new RuntimeException(e.getMessage());
		}
	}

	// Other primitive getXXX methods for all required
	// data types
	. . . 

}