/**
* Returns the article data for the given identity.
*
* @param articleIdentity the article identity
* @throws IllegalStateException if there is no article with the given identity
* @throws SQLException if there is a problem with the underlying JDBC connection
*/
public Article queryArticle(final long articleIdentity) throws SQLException {
final Article article = new Article();
synchronized (this.connection) {
try (PreparedStatement statement = this.connection.prepareStatement(SQL_SELECT_ARTICLE)) {
statement.setLong(1, articleIdentity);
try (ResultSet resultSet = statement.executeQuery()) {
if (!resultSet.next()) throw new IllegalStateException("article doesn't exist.");
article.setIdentity(resultSet.getLong("identity"));
article.setDescription(resultSet.getString("description"));
article.setCount(resultSet.getInt("count"));
article.setPrice(resultSet.getLong("price"));
}
}
}
return article;
}
/**
* Returns all article data.
*
* @throws IllegalStateException if the login data is invalid
* @throws SQLException if there is a problem with the underlying JDBC connection
*/
public SortedSet<Article> queryArticles() throws SQLException {
final SortedSet<Article> articles = new TreeSet<Article>();
synchronized (this.connection) {
try (PreparedStatement statement = this.connection.prepareStatement(SQL_SELECT_ARTICLES)) {
try (ResultSet resultSet = statement.executeQuery()) {
while (resultSet.next()) {
final Article article = new Article();
article.setIdentity(resultSet.getLong("identity"));
article.setDescription(resultSet.getString("description"));
article.setCount(resultSet.getInt("count"));
article.setPrice(resultSet.getLong("price"));
articles.add(article);
}
}
}
}
return articles;
}