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/* 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.qpid.configuration;
import org.apache.qpid.configuration.Accessor.SystemPropertyAccessor;
abstract class QpidProperty<T>
{
private T defValue;
private String[] names;
protected Accessor accessor;
QpidProperty(T defValue, String... names)
{
this(new SystemPropertyAccessor(),defValue,names);
}
QpidProperty(Accessor accessor,T defValue, String... names)
{
this.accessor = accessor;
this.defValue = defValue;
this.names = names;
}
T get()
{
for (String name : names)
{
T obj = getByName(name);
if (obj != null)
{
return obj;
}
}
return defValue;
}
protected abstract T getByName(String name);
public static QpidProperty<Boolean> booleanProperty(Boolean defaultValue,
String... names)
{
return new QpidBooleanProperty(defaultValue, names);
}
public static QpidProperty<Boolean> booleanProperty(Accessor accessor,
Boolean defaultValue,String... names)
{
return new QpidBooleanProperty(accessor,defaultValue, names);
}
public static QpidProperty<Integer> intProperty(Integer defaultValue,
String... names)
{
return new QpidIntProperty(defaultValue, names);
}
public static QpidProperty<Integer> intProperty(Accessor accessor,
Integer defaultValue, String... names)
{
return new QpidIntProperty(accessor,defaultValue, names);
}
public static QpidProperty<Long> longProperty(Long defaultValue,
String... names)
{
return new QpidLongProperty(defaultValue, names);
}
public static QpidProperty<Long> longProperty(Accessor accessor,
Long defaultValue, String... names)
{
return new QpidLongProperty(accessor,defaultValue, names);
}
public static QpidProperty<String> stringProperty(String defaultValue,
String... names)
{
return new QpidStringProperty(defaultValue, names);
}
public static QpidProperty<String> stringProperty(Accessor accessor,
String defaultValue,String... names)
{
return new QpidStringProperty(accessor,defaultValue, names);
}
static class QpidBooleanProperty extends QpidProperty<Boolean>
{
QpidBooleanProperty(Boolean defValue, String... names)
{
super(defValue, names);
}
QpidBooleanProperty(Accessor accessor,Boolean defValue, String... names)
{
super(accessor,defValue, names);
}
@Override
protected Boolean getByName(String name)
{
return accessor.getBoolean(name);
}
}
static class QpidIntProperty extends QpidProperty<Integer>
{
QpidIntProperty(Integer defValue, String... names)
{
super(defValue, names);
}
QpidIntProperty(Accessor accessor,Integer defValue, String... names)
{
super(accessor,defValue, names);
}
@Override
protected Integer getByName(String name)
{
return accessor.getInt(name);
}
}
static class QpidLongProperty extends QpidProperty<Long>
{
QpidLongProperty(Long defValue, String... names)
{
super(defValue, names);
}
QpidLongProperty(Accessor accessor,Long defValue, String... names)
{
super(accessor,defValue, names);
}
@Override
protected Long getByName(String name)
{
return accessor.getLong(name);
}
}
static class QpidStringProperty extends QpidProperty<String>
{
QpidStringProperty(String defValue, String... names)
{
super(defValue, names);
}
QpidStringProperty(Accessor accessor,String defValue, String... names)
{
super(accessor,defValue, names);
}
@Override
protected String getByName(String name)
{
return accessor.getString(name);
}
}
}
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