SqlCacheVersion.java

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package org.apache.doris.qe.cache;

import java.util.Objects;

/**
 * Immutable whole-table SQL result-cache identity and its wall-clock update time.
 * The identity is compared for equality, never ordered. It must cover data, schema and table recreation,
 * and describe the same pinned generation as the scan. Reading it must not enumerate files or partitions.
 * The timestamp is only for the cache's quiet-window eligibility check, never for identity comparisons.
 */
public final class SqlCacheVersion {
    private final String version;
    private final long updateTimeMillis;

    public SqlCacheVersion(String version, long updateTimeMillis) {
        this.version = Objects.requireNonNull(version, "version");
        this.updateTimeMillis = updateTimeMillis;
    }

    public String getVersion() {
        return version;
    }

    public long getUpdateTimeMillis() {
        return updateTimeMillis;
    }
}