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DI Container for LastaFlute, super forked from Seasar as Java8
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/*
* Copyright 2014-2015 the original author or authors.
*
* Licensed 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 org.dbflute.lasta.di.helper.message;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.InputStream;
import java.net.URL;
import java.util.Properties;
import org.dbflute.lasta.di.core.smart.hot.HotdeployUtil;
import org.dbflute.lasta.di.util.LdiAssertionUtil;
import org.dbflute.lasta.di.util.LdiFileInputStreamUtil;
import org.dbflute.lasta.di.util.LdiInputStreamUtil;
import org.dbflute.lasta.di.util.LdiPropertiesUtil;
import org.dbflute.lasta.di.util.LdiResourceUtil;
import org.dbflute.lasta.di.util.LdiURLUtil;
/**
* @author modified by jflute (originated in Seasar)
*/
public class MessageResourceBundleFacade {
// ===================================================================================
// Attribute
// =========
protected File file; // null allowed
protected long lastModified;
protected MessageResourceBundle bundle; // changeable
protected MessageResourceBundleFacade parent; // null allowed
// ===================================================================================
// Constructor
// ===========
public MessageResourceBundleFacade(URL url) {
setup(url);
}
protected void setup(URL url) {
LdiAssertionUtil.assertNotNull("url", url);
if (HotdeployUtil.isHotdeploy()) {
file = LdiResourceUtil.getFile(url);
}
if (file != null) {
lastModified = file.lastModified();
bundle = createBundle(file);
} else {
bundle = createBundle(url);
}
if (parent != null) {
bundle.setParent(parent.getBundle());
}
}
// ===================================================================================
// Get Bundle
// ==========
public synchronized MessageResourceBundle getBundle() {
if (isModified()) {
bundle = createBundle(file);
}
if (parent != null) {
bundle.setParent(parent.getBundle());
}
return bundle;
}
protected boolean isModified() {
if (file != null && file.lastModified() > lastModified) {
return true;
}
return false;
}
// ===================================================================================
// Factory
// =======
protected MessageResourceBundle createBundle(File file) {
return new MessageResourceBundleImpl(createProperties(file));
}
protected MessageResourceBundle createBundle(URL url) {
return new MessageResourceBundleImpl(createProperties(url));
}
protected Properties createProperties(File file) {
return createProperties(LdiFileInputStreamUtil.create(file));
}
protected Properties createProperties(URL url) {
return createProperties(LdiURLUtil.openStream(url));
}
protected Properties createProperties(InputStream is) {
LdiAssertionUtil.assertNotNull("is", is);
if (!(is instanceof BufferedInputStream)) {
is = new BufferedInputStream(is);
}
try {
Properties properties = new Properties();
LdiPropertiesUtil.load(properties, is);
return properties;
} finally {
LdiInputStreamUtil.close(is);
}
}
// ===================================================================================
// Accessor
// ========
public synchronized MessageResourceBundleFacade getParent() {
return parent;
}
public synchronized void setParent(MessageResourceBundleFacade parent) {
this.parent = parent;
}
}