/*
* JGAAP -- a graphical program for stylometric authorship attribution
* Copyright (C) 2009,2011 by Patrick Juola
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.jgaap.backend;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.jgaap.generics.Canonicizer;
/**
*
* Instances new Canonicizers based on display name.
*
* @author Michael Ryan
* @since 5.0.0
*/
public class Canonicizers {
private static final ImmutableList<Canonicizer> CANONICIZERS = loadCanonicizers();
private static final ImmutableMap<String, Canonicizer> canonicizers = loadCanonicizersMap();
/**
* A read-only list of the Canonicizers
*/
public static List<Canonicizer> getCanonicizers() {
return CANONICIZERS;
}
private static ImmutableList<Canonicizer> loadCanonicizers() {
List<Object> objects = AutoPopulate.findObjects("com.jgaap.canonicizers", Canonicizer.class);
for(Object tmp : AutoPopulate.findClasses("com.jgaap.generics", Canonicizer.class)){
objects.addAll(AutoPopulate.findObjects("com.jgaap.canonicizers", (Class<?>)tmp));
}
List<Canonicizer> canonicizers = new ArrayList<Canonicizer>(objects.size());
for (Object tmp : objects) {
canonicizers.add((Canonicizer)tmp);
}
Collections.sort(canonicizers);
return ImmutableList.copyOf(canonicizers);
}
private static ImmutableMap<String, Canonicizer> loadCanonicizersMap() {
// Load the canonicizers dynamically
ImmutableMap.Builder<String, Canonicizer> builder = ImmutableMap.builder();
for(Canonicizer canon : CANONICIZERS){
builder.put(canon.displayName().toLowerCase().trim(), canon);
}
return builder.build();
}
public static Canonicizer getCanonicizer(String action) throws Exception{
Canonicizer canonicizer;
String[] tmp = action.split("\\|", 2);
action = tmp[0].trim().toLowerCase();
if(canonicizers.containsKey(action)){
canonicizer = canonicizers.get(action).getClass().newInstance();
}else{
throw new Exception("Canonicizer "+action+" not found!");
}
if(tmp.length > 1){
canonicizer.setParameters(tmp[1]);
}
return canonicizer;
}
}