/*
 * Copyright 2014-2015 Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags.
 *
 * 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 org.hawkular.metrics.core.impl.mapper;

import org.hawkular.metrics.core.api.NumericMetric;

import com.google.common.base.Function;

/**
 * @author John Sanda
 */
public abstract class MetricMapper<T> implements Function<NumericMetric, T> {

    @Override
    public T apply(NumericMetric metric) {
        if (metric == null) {
            throw new NoResultsException();
        }
        return doApply(metric);
    }

    abstract T doApply(NumericMetric metric);
}

/*
 * Copyright 2014-2015 Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags.
 *
 * 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 org.hawkular.metrics.core.impl.mapper;

import org.hawkular.metrics.core.api.NumericMetric;

import com.google.common.base.Function;

/**
 * @author John Sanda
 */
public abstract class MetricMapper<T> implements Function<NumericMetric, T> {

    @Override
    public T apply(NumericMetric metric) {
        if (metric == null) {
            throw new NoResultsException();
        }
        return doApply(metric);
    }

    public abstract T doApply(NumericMetric metric);
}

Fix method visibility after refactoring.