LanceReadOptions.java

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// to you under the Apache License, Version 2.0 (the
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//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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package org.apache.doris.datasource.lance;

import org.lance.ReadOptions;

import java.util.Map;
import java.util.OptionalLong;

/** Builds consistently configured SDK read options for Lance dataset metadata access. */
final class LanceReadOptions {
    private static final long METADATA_CACHE_SIZE = 64L * 1024 * 1024;

    private LanceReadOptions() {
    }

    /** Called by metadata loading and timestamp-based snapshot resolution. */
    static ReadOptions build(Map<String, String> javaStorageOptions, OptionalLong version) {
        ReadOptions.Builder builder = new ReadOptions.Builder()
                .setStorageOptions(javaStorageOptions)
                .setIndexCacheSizeBytes(0)
                .setMetadataCacheSizeBytes(METADATA_CACHE_SIZE);
        if (version.isPresent()) {
            builder.setVersion(version.getAsLong());
        }
        return builder.build();
    }
}