com.browseengine.bobo.facets.data.PredefinedTermListFactory Maven / Gradle / Ivy
/**
* This software is licensed to you under the Apache License, Version 2.0 (the
* "Apache License").
*
* LinkedIn's contributions are made under the Apache License. If you contribute
* to the Software, the contributions will be deemed to have been made under the
* Apache License, unless you expressly indicate otherwise. Please do not make any
* contributions that would be inconsistent with the Apache License.
*
* You may obtain a copy of the Apache License at http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, this software
* distributed under the Apache License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the Apache
* License for the specific language governing permissions and limitations for the
* software governed under the Apache License.
*
* © 2012 LinkedIn Corp. All Rights Reserved.
*/
package com.browseengine.bobo.facets.data;
import java.lang.reflect.Constructor;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
/**
* Class supported:
*
* - {@link Integer}
* - {@link Float}
* - {@link Character}
* - {@link Double}
* - {@link Short}
* - {@link Long}
* - {@link Date}
*
*
* Autoboxing: primitive types corresponding classes above are supported.
*/
public class PredefinedTermListFactory implements TermListFactory
{
private static Map, Class>> supportedTypes = new HashMap, Class>>();
static
{
supportedTypes.put(int.class, TermIntList.class);
supportedTypes.put(float.class, TermFloatList.class);
supportedTypes.put(char.class, TermCharList.class);
supportedTypes.put(double.class, TermDoubleList.class);
supportedTypes.put(short.class, TermShortList.class);
supportedTypes.put(long.class, TermLongList.class);
supportedTypes.put(Integer.class, TermIntList.class);
supportedTypes.put(Float.class, TermFloatList.class);
supportedTypes.put(Character.class, TermCharList.class);
supportedTypes.put(Double.class, TermDoubleList.class);
supportedTypes.put(Short.class, TermShortList.class);
supportedTypes.put(Long.class, TermLongList.class);
supportedTypes.put(Date.class, TermDateList.class);
}
private final Class _cls;
private final String _format;
private final Class> _listClass;
public PredefinedTermListFactory(Class cls, String format)
{
if (supportedTypes.get(cls) == null)
{
throw new IllegalArgumentException("Class " + cls + " not defined.");
}
_cls = (Class) cls;
_format = format;
_listClass = (Class>) supportedTypes.get(_cls);
}
public PredefinedTermListFactory(Class cls)
{
this(cls, null);
}
public TermValueList createTermList(int capacity)
{
if (TermCharList.class.equals(_listClass)) // we treat char type separate as
// it does not have a format
// string
{
@SuppressWarnings("unchecked")
TermValueList retlist = (TermValueList) (new TermCharList(capacity));;
return retlist;
} else
{
try
{
Constructor> constructor = _listClass
.getConstructor(int.class, String.class); // the constructor also takes the format String as parameter
return constructor.newInstance(capacity, _format);
} catch (Exception e)
{
throw new RuntimeException(e.getMessage());
}
}
}
public TermValueList createTermList()
{
return createTermList(-1);
}
public Class getType()
{
// TODO Auto-generated method stub
return _cls;
}
}