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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package services;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.osoa.sca.annotations.Property;
import org.osoa.sca.annotations.Reference;
public class CatalogImpl implements Catalog {
@Property
public String currencyCode = "USD";
@Reference
public CurrencyConverter currencyConverter;
private String currencySymbol;
public String[] get() {
String[] catalogArray = null;
String itemName;
float itemPrice;
String itemCurrencyCode;
Connection conn = null;
PreparedStatement pstmt = null;
ResultSet rs = null;
currencySymbol = currencyConverter.getCurrencySymbol(currencyCode);
try {
//initialize driver and register it with DriverManager
Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
conn = DriverManager.getConnection(
"jdbc:derby:target/store_db",
"",
"");
pstmt = conn.prepareStatement("select * from \"Catalog\"",
ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
rs = pstmt.executeQuery();
rs.last();
catalogArray = new String[rs.getRow()];
do {
itemName = rs.getString(2);
itemPrice = rs.getFloat(4);
itemCurrencyCode = rs.getString(3);
catalogArray[rs.getRow()-1] = new String(itemName+" - "+
currencySymbol+" "+
currencyConverter.getConversion(itemCurrencyCode, currencyCode, itemPrice));
} while(rs.previous());
} catch (SQLException ex) {
ex.printStackTrace();
}catch (ClassNotFoundException ex) {
ex.printStackTrace();
} finally {
cleanup(conn,pstmt,rs);
}
return catalogArray;
}
private void cleanup(Connection conn, PreparedStatement pstmt, ResultSet rs) {
if (rs!=null) {
try {
rs.close();
} catch (SQLException ex) {
ex.printStackTrace();
}
}
if (pstmt!=null) {
try {
pstmt.close();
} catch (SQLException ex) {
ex.printStackTrace();
}
}
if (conn!=null) {
try {
conn.close();
} catch (SQLException ex) {
ex.printStackTrace();
}
}
}
}
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