com.cloudera.exhibit.core.simple.SimpleObs.java Source code

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Here is the source code for com.cloudera.exhibit.core.simple.SimpleObs.java

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/*
 * Copyright (c) 2015, Cloudera, Inc. All Rights Reserved.
 *
 * Cloudera, Inc. 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
 *
 * This software 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 com.cloudera.exhibit.core.simple;

import com.cloudera.exhibit.core.Obs;
import com.cloudera.exhibit.core.ObsDescriptor;
import com.google.common.base.Preconditions;
import com.google.common.collect.Lists;

import java.util.List;

public class SimpleObs extends Obs {

    private final ObsDescriptor descriptor;
    private final List<Object> values;

    public static SimpleObs of(ObsDescriptor desc, Object... args) {
        return new SimpleObs(desc, Lists.newArrayList(args));
    }

    public SimpleObs(ObsDescriptor descriptor, List<Object> values) {
        assert (descriptor.size() == values.size());
        this.descriptor = Preconditions.checkNotNull(descriptor);
        this.values = Preconditions.checkNotNull(values);
    }

    @Override
    public ObsDescriptor descriptor() {
        return descriptor;
    }

    @Override
    public Object get(int index) {
        return values.get(index);
    }

    public List<Object> getValues() {
        return values;
    }

    @Override
    public int hashCode() {
        return descriptor.hashCode() + 17 * values.hashCode();
    }

    @Override
    public boolean equals(Object other) {
        if (other == null || !(other instanceof SimpleObs)) {
            return false;
        }
        SimpleObs obs = (SimpleObs) other;
        return descriptor.equals(obs.descriptor) && values.equals(obs.values);
    }
}