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A Java's Collaborative Filtering library to carry out experiments in research of Collaborative Filtering based Recommender Systems. The library has been designed from researchers to researchers.

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/*
 * 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.commons.math3.exception;

import org.apache.commons.math3.exception.util.Localizable;
import org.apache.commons.math3.exception.util.LocalizedFormats;
import org.apache.commons.math3.exception.util.ExceptionContext;
import org.apache.commons.math3.exception.util.ExceptionContextProvider;

/**
 * Base class for all unsupported features.
 * It is used for all the exceptions that have the semantics of the standard
 * {@link UnsupportedOperationException}, but must also provide a localized
 * message.
 *
 * @since 2.2
 */
public class MathUnsupportedOperationException extends UnsupportedOperationException
    implements ExceptionContextProvider {
    /** Serializable version Id. */
    private static final long serialVersionUID = -6024911025449780478L;
    /** Context. */
    private final ExceptionContext context;

    /**
     * Default constructor.
     */
    public MathUnsupportedOperationException() {
        this(LocalizedFormats.UNSUPPORTED_OPERATION);
    }
    /**
     * @param pattern Message pattern providing the specific context of
     * the error.
     * @param args Arguments.
     */
    public MathUnsupportedOperationException(Localizable pattern,
                                             Object ... args) {
        context = new ExceptionContext(this);
        context.addMessage(pattern, args);
    }

    /** {@inheritDoc} */
    public ExceptionContext getContext() {
        return context;
    }

    /** {@inheritDoc} */
    @Override
    public String getMessage() {
        return context.getMessage();
    }

    /** {@inheritDoc} */
    @Override
    public String getLocalizedMessage() {
        return context.getLocalizedMessage();
    }
}