129 lines
3.5 KiB
Java
129 lines
3.5 KiB
Java
package it.cavallium.dbengine.database.disk;
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import it.cavallium.dbengine.database.DiscardingCloseable;
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import it.cavallium.dbengine.lucene.LuceneCloseable;
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import it.cavallium.dbengine.lucene.searcher.ShardIndexSearcher;
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import it.cavallium.dbengine.utils.SimpleResource;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import java.util.Objects;
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import org.apache.lucene.search.IndexSearcher;
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public interface LLIndexSearchers extends DiscardingCloseable {
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static LLIndexSearchers of(List<LLIndexSearcher> indexSearchers) {
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return new ShardedIndexSearchers(indexSearchers);
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}
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static UnshardedIndexSearchers unsharded(LLIndexSearcher indexSearcher) {
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return new UnshardedIndexSearchers(indexSearcher);
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}
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List<IndexSearcher> shards();
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List<LLIndexSearcher> llShards();
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IndexSearcher shard(int shardIndex);
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LLIndexSearcher llShard(int shardIndex);
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class UnshardedIndexSearchers implements LLIndexSearchers, LuceneCloseable {
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private final LLIndexSearcher indexSearcher;
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public UnshardedIndexSearchers(LLIndexSearcher indexSearcher) {
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Objects.requireNonNull(indexSearcher);
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this.indexSearcher = indexSearcher;
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}
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@Override
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public List<IndexSearcher> shards() {
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return List.of(indexSearcher.getIndexSearcher());
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}
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@Override
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public List<LLIndexSearcher> llShards() {
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return Collections.singletonList(indexSearcher);
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}
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@Override
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public IndexSearcher shard(int shardIndex) {
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if (shardIndex != -1) {
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throw new IndexOutOfBoundsException("Shard index " + shardIndex + " is invalid, this is a unsharded index");
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}
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return indexSearcher.getIndexSearcher();
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}
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@Override
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public LLIndexSearcher llShard(int shardIndex) {
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if (shardIndex != -1) {
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throw new IndexOutOfBoundsException("Shard index " + shardIndex + " is invalid, this is a unsharded index");
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}
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return indexSearcher;
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}
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public IndexSearcher shard() {
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return this.shard(-1);
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}
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public LLIndexSearcher llShard() {
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return this.llShard(-1);
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}
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@Override
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public void close() {
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indexSearcher.close();
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}
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}
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class ShardedIndexSearchers implements LLIndexSearchers, LuceneCloseable {
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private final List<LLIndexSearcher> indexSearchers;
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private final List<IndexSearcher> indexSearchersVals;
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public ShardedIndexSearchers(List<LLIndexSearcher> indexSearchers) {
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List<IndexSearcher> shardedIndexSearchersVals = new ArrayList<>(indexSearchers.size());
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for (LLIndexSearcher indexSearcher : indexSearchers) {
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shardedIndexSearchersVals.add(indexSearcher.getIndexSearcher());
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}
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shardedIndexSearchersVals = ShardIndexSearcher.create(shardedIndexSearchersVals);
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this.indexSearchers = indexSearchers;
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this.indexSearchersVals = shardedIndexSearchersVals;
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}
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@Override
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public List<IndexSearcher> shards() {
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return Collections.unmodifiableList(indexSearchersVals);
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}
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@Override
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public List<LLIndexSearcher> llShards() {
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return Collections.unmodifiableList(indexSearchers);
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}
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@Override
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public IndexSearcher shard(int shardIndex) {
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if (shardIndex < 0) {
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throw new IndexOutOfBoundsException("Shard index " + shardIndex + " is invalid");
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}
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return indexSearchersVals.get(shardIndex);
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}
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@Override
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public LLIndexSearcher llShard(int shardIndex) {
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if (shardIndex < 0) {
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throw new IndexOutOfBoundsException("Shard index " + shardIndex + " is invalid");
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}
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return indexSearchers.get(shardIndex);
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}
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@Override
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public void close() {
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for (LLIndexSearcher indexSearcher : indexSearchers) {
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indexSearcher.close();
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}
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}
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}
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}
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