PaimonTableCacheValue.java

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//
//   http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.doris.datasource.paimon;

import org.apache.paimon.table.Table;

import java.util.Objects;
import java.util.concurrent.atomic.AtomicLong;

/**
 * Cache value for a Paimon table handle. Snapshot projections use a separate cache entry so this
 * value cannot grow after admission through a memoized supplier.
 */
public class PaimonTableCacheValue {
    private static final AtomicLong NEXT_GENERATION = new AtomicLong();

    private final Table paimonTable;
    private final PaimonSnapshotCacheValue latestSnapshotFence;
    private final long generation;

    public PaimonTableCacheValue(Table paimonTable, PaimonSnapshotCacheValue latestSnapshotFence) {
        this.paimonTable = paimonTable;
        this.latestSnapshotFence = Objects.requireNonNull(
                latestSnapshotFence, "latestSnapshotFence can not be null");
        this.generation = NEXT_GENERATION.incrementAndGet();
    }

    public Table getPaimonTable() {
        return paimonTable;
    }

    public long getGeneration() {
        return generation;
    }

    public PaimonSnapshotCacheValue getLatestSnapshotFence() {
        return latestSnapshotFence;
    }
}