50 lines
1.8 KiB
Java
50 lines
1.8 KiB
Java
package it.cavallium.dbengine.client;
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import com.google.common.collect.Multimap;
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import com.google.common.collect.Multimaps;
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import it.cavallium.dbengine.database.LLIndexRequest;
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import it.cavallium.dbengine.database.LLSoftUpdateDocument;
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import it.cavallium.dbengine.database.LLTerm;
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import it.cavallium.dbengine.database.LLUpdateDocument;
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import it.cavallium.dbengine.database.LLUpdateFields;
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import it.cavallium.dbengine.rpc.current.data.IndicizerAnalyzers;
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import it.cavallium.dbengine.rpc.current.data.IndicizerSimilarities;
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import java.util.Map;
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import org.apache.lucene.index.IndexableField;
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import org.jetbrains.annotations.NotNull;
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public abstract class Indicizer<T, U> {
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/**
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* Transform a value to an IndexRequest.
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*/
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public abstract @NotNull LLIndexRequest toIndexRequest(@NotNull T key, @NotNull U value);
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public final @NotNull LLUpdateDocument toDocument(@NotNull T key, @NotNull U value) {
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var req = toIndexRequest(key, value);
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if (req instanceof LLUpdateFields updateFields) {
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return new LLUpdateDocument(updateFields.items());
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} else if (req instanceof LLUpdateDocument updateDocument) {
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return updateDocument;
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} else if (req instanceof LLSoftUpdateDocument softUpdateDocument) {
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return new LLUpdateDocument(softUpdateDocument.items());
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} else {
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throw new UnsupportedOperationException("Unexpected request type: " + req);
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}
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}
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public abstract @NotNull LLTerm toIndex(@NotNull T key);
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public abstract @NotNull String getKeyFieldName();
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public abstract @NotNull T getKey(IndexableField key);
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public abstract IndicizerAnalyzers getPerFieldAnalyzer();
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public abstract IndicizerSimilarities getPerFieldSimilarity();
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public Multimap<String, String> getMoreLikeThisDocumentFields(T key, U value) {
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return Multimaps.forMap(Map.of());
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}
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}
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