59 lines
2.3 KiB
Java
59 lines
2.3 KiB
Java
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package it.cavallium.dbengine.client.query;
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import it.cavallium.dbengine.client.query.current.data.NumericSort;
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import it.cavallium.dbengine.client.query.current.data.QueryParams;
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import org.apache.commons.lang.NotImplementedException;
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import org.apache.lucene.index.Term;
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import org.apache.lucene.search.Query;
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import org.apache.lucene.search.ScoreMode;
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import org.apache.lucene.search.Sort;
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import org.apache.lucene.search.SortField;
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import org.apache.lucene.search.SortField.Type;
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import org.apache.lucene.search.SortedNumericSortField;
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public class QueryParser {
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public static Query toQuery(it.cavallium.dbengine.client.query.current.data.Query query) {
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if (query == null) return null;
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throw new NotImplementedException();
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}
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public static boolean isScoringEnabled(QueryParams queryParams) {
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return queryParams.getScoreMode().getComputeScores();
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}
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public static Sort toSort(it.cavallium.dbengine.client.query.current.data.Sort sort) {
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switch (sort.getBasicType$()) {
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case NoSort:
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return null;
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case ScoreSort:
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return new Sort(SortField.FIELD_SCORE);
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case DocSort:
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return new Sort(SortField.FIELD_DOC);
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case NumericSort:
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NumericSort numericSort = (NumericSort) sort;
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return new Sort(new SortedNumericSortField(numericSort.getField(), Type.LONG, numericSort.getReverse()));
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default:
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throw new IllegalStateException("Unexpected value: " + sort.getBasicType$());
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}
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}
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@SuppressWarnings("ConstantConditions")
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public static ScoreMode toScoreMode(it.cavallium.dbengine.client.query.current.data.ScoreMode scoreMode) {
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if (scoreMode.getComputeScores() && scoreMode.getOnlyTopScores()) {
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return ScoreMode.TOP_SCORES;
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} else if (scoreMode.getComputeScores() && !scoreMode.getOnlyTopScores()) {
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return ScoreMode.COMPLETE;
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} else if (!scoreMode.getComputeScores() && scoreMode.getOnlyTopScores()) {
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throw new IllegalStateException("Conflicting score mode options: [computeScores = false, onlyTopScore = true]");
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} else if (!scoreMode.getComputeScores() && !scoreMode.getOnlyTopScores()) {
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return ScoreMode.COMPLETE_NO_SCORES;
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} else {
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throw new IllegalStateException("Unexpected value: " + scoreMode);
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}
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}
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public static it.cavallium.dbengine.client.query.current.data.Term toQueryTerm(Term term) {
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return it.cavallium.dbengine.client.query.current.data.Term.of(term.field(), term.text());
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}
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}
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