/* | |
* 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 org.apache.felix.webconsole.internal.servlet; | |
import java.util.Collection; | |
import java.util.Iterator; | |
import java.util.Map; | |
import java.util.StringTokenizer; | |
import org.osgi.framework.BundleContext; | |
/** | |
* A helper class to get configuration properties. | |
*/ | |
public class ConfigurationUtil | |
{ | |
private ConfigurationUtil() | |
{ | |
// prevent instantiation | |
} | |
/** | |
* Returns the named property from the framework. If the property does | |
* not exist, the default value <code>def</code> is returned. | |
* | |
* @param context The BundleContext providing framework properties | |
* @param name The name of the property to return | |
* @param def The default value if the named property does not exist | |
* @return The value of the named property or <code>def</code> | |
* if the property does not exist | |
*/ | |
public static final String getProperty( BundleContext context, String name, String def ) | |
{ | |
String value = context.getProperty( name ); | |
return ( value == null ) ? def : value; | |
} | |
/** | |
* Returns the named property from the framework. If the property does | |
* not exist, the default value <code>def</code> is returned. | |
* | |
* @param context The BundleContext providing framework properties | |
* @param name The name of the property to return | |
* @param def The default value if the named property does not exist | |
* @return The value of the named property as a string or <code>def</code> | |
* if the property does not exist | |
*/ | |
public static final int getProperty(BundleContext context, String name, int def) | |
{ | |
String value = context.getProperty( name); | |
if (value != null) | |
{ | |
try | |
{ | |
return Integer.parseInt(value.toString()); | |
} | |
catch (NumberFormatException nfe) | |
{ | |
// don't care | |
} | |
} | |
// not a number, not convertible, not set, use default | |
return def; | |
} | |
/** | |
* Returns the named property from the configuration. If the property does | |
* not exist, the default value <code>def</code> is returned. | |
* | |
* @param config The properties from which to returned the named one | |
* @param name The name of the property to return | |
* @param def The default value if the named property does not exist | |
* @return The value of the named property as a string or <code>def</code> | |
* if the property does not exist | |
*/ | |
public static final String getProperty(Map config, String name, String def) | |
{ | |
Object value = config.get(name); | |
if (value instanceof String) | |
{ | |
return (String) value; | |
} | |
if (value == null) | |
{ | |
return def; | |
} | |
return String.valueOf(value); | |
} | |
/** | |
* Returns the named property from the configuration. If the property does | |
* not exist, the default value <code>def</code> is returned. | |
* | |
* @param config The properties from which to returned the named one | |
* @param name The name of the property to return | |
* @param def The default value if the named property does not exist | |
* @return The value of the named property as a string or <code>def</code> | |
* if the property does not exist | |
*/ | |
public static final int getProperty(Map config, String name, int def) | |
{ | |
Object value = config.get(name); | |
if (value instanceof Number) | |
{ | |
return ((Number) value).intValue(); | |
} | |
// try to convert the value to a number | |
if (value != null) | |
{ | |
try | |
{ | |
return Integer.parseInt(value.toString()); | |
} | |
catch (NumberFormatException nfe) | |
{ | |
// don't care | |
} | |
} | |
// not a number, not convertible, not set, use default | |
return def; | |
} | |
/** | |
* Gets a property as String[] | |
* | |
* @param config The properties from which to returned the named one | |
* @param name The name of the property to return | |
* @return the property value as string array - no matter if originally it was other kind of array, collection or comma-separated string. Returns <code>null</code> if the property is not set. | |
*/ | |
public static final String[] getStringArrayProperty(Map config, String name) | |
{ | |
Object value = config.get(name); | |
if (value == null) | |
{ | |
return null; | |
} | |
String[] ret = null; | |
if (value.getClass().isArray()) | |
{ | |
final Object[] names = (Object[]) value; | |
ret = new String[names.length]; | |
for (int i = 0; i < names.length; i++) | |
{ | |
ret[i] = String.valueOf(names[i]); | |
} | |
} | |
else if (value instanceof Collection) | |
{ | |
Collection collection = (Collection) value; | |
ret = new String[collection.size()]; | |
int i = 0; | |
for (Iterator iter = collection.iterator(); iter.hasNext();) | |
{ | |
ret[i] = String.valueOf(iter.next()); | |
i++; | |
} | |
} | |
else if (value instanceof String) | |
{ | |
String pv = ((String) value).trim(); | |
if (pv.length() != 0) | |
{ | |
StringTokenizer tok = new StringTokenizer(pv, ",;"); //$NON-NLS-1$ | |
ret = new String[tok.countTokens()]; | |
int i = 0; | |
while (tok.hasMoreTokens()) | |
{ | |
ret[i] = tok.nextToken(); | |
i++; | |
} | |
} | |
} | |
return ret; | |
} | |
} |