2 * Copyright 2008 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;
31 * Property component that reads a property file and provides it to other
32 * components through a provided interface. NOTE: when multiple property
33 * components are used, disambiguation of provided and required interfaces is
36 * @author Erik Brakkee
38 public class PropertyComponent extends AbstractComponent<Properties> {
42 private static ProvidedInterface PROPS = new DefaultProvidedInterface("props",
48 private Properties props;
51 * Creates a new PropertyComponent object.
53 * @param aName DOCUMENT ME!
54 * @param aResource DOCUMENT ME!
56 * @throws IOException DOCUMENT ME!
58 public PropertyComponent(String aName, InputResource aResource)
60 this(aName, readProps(aResource));
64 * Creates a new PropertyComponent object.
66 * @param aName DOCUMENT ME!
67 * @param aProps DOCUMENT ME!
69 public PropertyComponent(String aName, Properties aProps) {
73 addProvidedInterface(PROPS);
79 * @param aResource DOCUMENT ME!
81 * @return DOCUMENT ME!
83 * @throws IOException DOCUMENT ME!
85 private static Properties readProps(InputResource aResource)
87 Properties props = new Properties();
88 props.load(aResource.getInputStream());
96 * @param aScope DOCUMENT ME!
98 * @return DOCUMENT ME!
101 protected Properties doStart(Scope aScope) {
102 addInterface(PROPS, props, aScope);
110 * @param aRuntime DOCUMENT ME!
113 protected void doStop(Properties aRuntime) {