org.feature4j.FeatureBundle.java Source code

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Here is the source code for org.feature4j.FeatureBundle.java

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/*
 * Copyright 2014 the original author or authors.
 *
 * 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.feature4j;

import com.google.common.base.Optional;
import com.google.common.collect.ImmutableMap;

import java.util.Map;

import static com.google.common.base.MoreObjects.firstNonNull;

public class FeatureBundle {

    private final Map<String, Object> features;

    public FeatureBundle(Map<String, Object> features) {
        this.features = ImmutableMap.copyOf(features);
    }

    public Boolean enabled(String key) {
        return get(key, Boolean.class, Boolean.FALSE);
    }

    public String string(String key) {
        return firstNonNull(get(key), "").toString();
    }

    public <T> T get(String key, Class<T> valueClass, T defaultValue) {
        final Optional<T> value = get(key, valueClass);
        return value.isPresent() ? value.get() : defaultValue;
    }

    public <T> Optional<T> get(String key, Class<T> valueClass) {
        final Object featureValue = features.get(key);
        if (featureValue == null || !featureValue.getClass().isAssignableFrom(valueClass)) {
            return Optional.absent();
        }
        return Optional.fromNullable((T) featureValue);
    }

    public Object get(String key) {
        return features.get(key);
    }

    public Map<String, Object> getFeatures() {
        return features;
    }
}