com.webcohesion.ofx4j.io.AggregateIntrospector.java Source code

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Here is the source code for com.webcohesion.ofx4j.io.AggregateIntrospector.java

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/*
 * Copyright 2008 Web Cohesion
 *
 * 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 com.webcohesion.ofx4j.io;

import com.webcohesion.ofx4j.meta.Aggregate;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.reflections.Reflections;

import java.util.*;

/**
 * Introspector for aggregate information.
 *
 * @author Ryan Heaton
 */
public class AggregateIntrospector {

    private static final Log LOG = LogFactory.getLog(AggregateIntrospector.class);
    static final Map<Class, AggregateInfo> INFO_MAP = new HashMap<Class, AggregateInfo>();
    static final Map<String, Class> AGGREGATE_CLASSES_BY_NAME;
    static {
        AGGREGATE_CLASSES_BY_NAME = Collections.synchronizedMap(new TreeMap<String, Class>());
        Reflections reflections = new Reflections("com.webcohesion.ofx4j");
        Set<Class<?>> aggregateClasses = reflections.getTypesAnnotatedWith(Aggregate.class);
        for (Class<?> clazz : aggregateClasses) {
            AggregateInfo info = getAggregateInfo(clazz);
            AGGREGATE_CLASSES_BY_NAME.put(info.getName(), clazz);
        }
    }

    /**
     * Get the aggregate meta information for the specified class.
     *
     * @param clazz the aggregate class.
     * @return The aggregate meta information, or null if the class isn't an aggregate.
     */
    public static AggregateInfo getAggregateInfo(Class clazz) {
        AggregateInfo info = null;
        if (clazz.isAnnotationPresent(Aggregate.class)) {
            synchronized (INFO_MAP) {
                info = INFO_MAP.get(clazz);
                if (info == null) {
                    info = new AggregateInfo(clazz);
                    INFO_MAP.put(clazz, info);
                }
            }
        }
        return info;
    }

    /**
     * Find the aggregate class by name.
     *
     * @param aggregateName The name of the aggregate.
     * @return The aggregate class.
     */
    public static Class findAggregateByName(String aggregateName) {
        return AGGREGATE_CLASSES_BY_NAME.get(aggregateName);
    }

}