EmptyCallableMemberDescriptor.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 freemarker.ext.beans;

/**
 * Represents that no member was chosen. Why it wasn't is represented by the two singleton instances,
 * {@link #NO_SUCH_METHOD} and {@link #AMBIGUOUS_METHOD}. (Note that instances of these are cached associated with the
 * argument types, thus it shouldn't store details that are specific to the actual argument values. In fact, it better
 * remains a set of singletons.)     
 */
final class EmptyCallableMemberDescriptor extends MaybeEmptyCallableMemberDescriptor {
    
    static final EmptyCallableMemberDescriptor NO_SUCH_METHOD = new EmptyCallableMemberDescriptor();
    static final EmptyCallableMemberDescriptor AMBIGUOUS_METHOD = new EmptyCallableMemberDescriptor();
    
    private EmptyCallableMemberDescriptor() { };
    
}