com.wrmsr.kleist.Index.java Source code

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Here is the source code for com.wrmsr.kleist.Index.java

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/*
 * 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 com.wrmsr.kleist;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonPropertyOrder;
import com.google.common.base.MoreObjects;

import javax.annotation.concurrent.Immutable;

import java.util.Comparator;
import java.util.Map;

import static com.google.common.base.Preconditions.checkArgument;
import static com.wrmsr.kleist.util.collect.MoreCollectors.toLinkedHashMap;

@JsonPropertyOrder({ "segments", })
@Immutable
public final class Index {
    private final Map<String, Segment> segments;

    @JsonCreator
    public Index(@JsonProperty("segments") Map<String, Segment> segments) {
        this.segments = segments.entrySet().stream().sorted(Comparator.comparing(e -> e.getValue().getGeneration()))
                .collect(toLinkedHashMap());
        checkArgument(
                this.segments.values().stream().map(Segment::getGeneration).distinct().count() == segments.size());
    }

    @Override
    public String toString() {
        return MoreObjects.toStringHelper(this).add("segments", segments).toString();
    }

    @JsonProperty("segments")
    public Map<String, Segment> getSegments() {
        return segments;
    }
}