CompositeIdFieldPersister.java

package eu.f3rog.db;

import com.j256.ormlite.field.FieldType;
import com.j256.ormlite.field.SqlType;
import com.j256.ormlite.field.types.BaseDataType;
import com.j256.ormlite.support.DatabaseResults;

import java.sql.SQLException;

/**
 * Class {@link CompositeIdFieldPersister} is used for persisting / retrieving {@link TimeStamp} objects to / from database.
 *
 * @author Frantisek Gazo
 * @version 2015-09-09
 */
public class CompositeIdFieldPersister extends BaseDataType {

    private static final CompositeIdFieldPersister instance = new CompositeIdFieldPersister();

    private CompositeIdFieldPersister() {
        super(SqlType.STRING, new Class<?>[]{TimeStamp.class});
    }

    public static CompositeIdFieldPersister getSingleton() {
        return instance;
    }

    @Override
    public Object javaToSqlArg(FieldType fieldType, Object javaObject) {
        if (javaObject == null) {
            return null;
        } else {
            return javaObject.toString();
        }
    }

    @Override
    public Object sqlArgToJava(FieldType fieldType, Object sqlArg, int columnPos) throws SQLException {
        return CompositeId.Builder.buildFrom((String) sqlArg);
    }

    @Override
    public Object resultToSqlArg(FieldType fieldType, DatabaseResults results, int columnPos) throws SQLException {
        return results.getString(columnPos);
    }

    @Override
    public Object parseDefaultString(FieldType fieldType, String defaultStr) throws SQLException {
        return defaultStr;
    }

}