EngineMetaCache.java

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package org.apache.doris.datasource.metacache;

import org.apache.doris.datasource.ExternalCatalog;
import org.apache.doris.datasource.ExternalTable;
import org.apache.doris.datasource.SchemaCacheValue;
import org.apache.doris.datasource.mvcc.MvccSnapshot;

import java.util.List;
import java.util.Optional;

/**
 * Unified interface for engine-level metadata caches.
 */
public interface EngineMetaCache {
    String getEngineType();

    void init(ExternalCatalog catalog);

    List<CacheModule> getCacheModules();

    default void invalidateCatalog() {
        getCacheModules().forEach(CacheModule::invalidateAll);
    }

    default void invalidateDb(String dbName) {
        getCacheModules().forEach(module -> module.invalidateDb(dbName));
    }

    default void invalidateTable(ExternalTable table) {
        getCacheModules().forEach(module -> module.invalidateTable(table.getDbName(), table.getName()));
    }

    EnginePartitionInfo getPartitionInfo(ExternalTable table, Optional<MvccSnapshot> snapshot);

    EngineSnapshot getSnapshot(ExternalTable table, Optional<MvccSnapshot> snapshot);

    SchemaCacheValue getSchema(ExternalTable table, long schemaVersion);
}