2 * Copyright 2005-2010 the original author or authors.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package org.wamblee.system.components;
18 import org.wamblee.io.InputResource;
20 import org.wamblee.system.core.AbstractComponent;
21 import org.wamblee.system.core.DefaultProvidedInterface;
22 import org.wamblee.system.core.ProvidedInterface;
23 import org.wamblee.system.core.Scope;
25 import java.io.IOException;
27 import java.util.Properties;
30 * Property component that reads a property file and provides it to other
31 * components through a provided interface. NOTE: when multiple property
32 * components are used, disambiguation of provided and required interfaces is
35 * @author Erik Brakkee
37 public class PropertyComponent extends AbstractComponent<Properties> {
38 private static ProvidedInterface PROPS = new DefaultProvidedInterface(
39 "props", Properties.class);
41 private Properties props;
44 * Creates a new PropertyComponent object.
48 public PropertyComponent(String aName, InputResource aResource)
50 this(aName, readProps(aResource));
54 * Creates a new PropertyComponent object.
57 public PropertyComponent(String aName, Properties aProps) {
61 addProvidedInterface(PROPS);
64 private static Properties readProps(InputResource aResource)
66 Properties props = new Properties();
67 props.load(aResource.getInputStream());
73 protected Properties doStart(Scope aScope) {
74 addInterface(PROPS, props, aScope);
80 protected void doStop(Properties aRuntime) {