log4j-layout-json-template/src/main/java/org/apache/logging/log4j/layout/json/template/resolver/StackTraceElementObjectResolverFactories.java

/*
 * 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.logging.log4j.layout.json.template.resolver;

import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.Map;

enum StackTraceElementObjectResolverFactories {;

    private static final Map<String, TemplateResolverFactory<StackTraceElement, StackTraceElementObjectResolverContext, ? extends TemplateResolver<StackTraceElement>>> RESOLVER_FACTORY_BY_NAME =
            createResolverFactoryByName();

    private static Map<String, TemplateResolverFactory<StackTraceElement, StackTraceElementObjectResolverContext, ? extends TemplateResolver<StackTraceElement>>> createResolverFactoryByName() {
        final Map<String, TemplateResolverFactory<StackTraceElement, StackTraceElementObjectResolverContext, ? extends TemplateResolver<StackTraceElement>>> resolverFactoryByName = new LinkedHashMap<>();
        final StackTraceElementObjectResolverFactory stackTraceElementObjectResolverFactory = StackTraceElementObjectResolverFactory.getInstance();
        resolverFactoryByName.put(stackTraceElementObjectResolverFactory.getName(), stackTraceElementObjectResolverFactory);
        return Collections.unmodifiableMap(resolverFactoryByName);
    }

    static Map<String, TemplateResolverFactory<StackTraceElement, StackTraceElementObjectResolverContext, ? extends TemplateResolver<StackTraceElement>>> getResolverFactoryByName() {
        return RESOLVER_FACTORY_BY_NAME;
    }

}