/*
* Copyright 2008 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.constretto.internal.store;
import org.constretto.ConfigurationStore;
import org.constretto.exception.ConstrettoException;
import org.constretto.model.ConfigurationValue;
import org.constretto.model.Resource;
import org.constretto.model.TaggedPropertySet;
import org.ini4j.IniPreferences;
import java.util.*;
import java.util.prefs.BackingStoreException;
import java.util.prefs.Preferences;
/**
* @author <a href="mailto:kaare.nilsen@gmail.com">Kaare Nilsen</a>
* @author <a href="mailto:kristoffer.moum@arktekk.no">Kristoffer Moum</a>
*/
public class IniFileConfigurationStore implements ConfigurationStore {
private static final String DEFAULT_TAG = "default";
private List<Resource> resources = new ArrayList<Resource>();
public IniFileConfigurationStore() {
}
private IniFileConfigurationStore(List<Resource> resources) {
this.resources = resources;
}
public IniFileConfigurationStore addResource(Resource resource) {
resources.add(resource);
return new IniFileConfigurationStore(resources);
}
public List<TaggedPropertySet> parseConfiguration() {
List<TaggedPropertySet> taggedPropertySets = new ArrayList<TaggedPropertySet>();
for (Resource r : resources) {
if (r.exists()) {
Preferences prefs = load(r);
List<String> tags = getChildren(prefs);
for (String tag : tags) {
Preferences node = prefs.node(tag);
List<String> keysPerNode = getKeys(node);
Map<String, String> properties = new HashMap<String, String>();
for (String key : keysPerNode) {
String value = node.get(key, null);
properties.put(key, value);
}
if (tag.equals(DEFAULT_TAG)) {
tag = ConfigurationValue.DEFAULT_TAG;
}
TaggedPropertySet taggedPropertySet = new TaggedPropertySet(tag, properties, getClass());
taggedPropertySets.add(taggedPropertySet);
}
}
}
return taggedPropertySets;
}
private List<String> getKeys(Preferences p) {
try {
return Arrays.asList(p.keys());
} catch (BackingStoreException e) {
throw new ConstrettoException(e);
}
}
private List<String> getChildren(Preferences p) {
try {
return Arrays.asList(p.childrenNames());
} catch (BackingStoreException e) {
throw new ConstrettoException(e);
}
}
private Preferences load(Resource resource) {
try {
return new IniPreferences(resource.getInputStream());
} catch (Exception e) {
throw new ConstrettoException(e);
}
}
}