org.eclipse.jdt.internal.core.search.indexing.QualifierQuery Maven / Gradle / Ivy
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/*******************************************************************************
* Copyright (c) 2021 Gayan Perera and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Gayan Perera - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.core.search.indexing;
import java.util.stream.Stream;
import org.eclipse.jdt.core.compiler.CharOperation;
/**
* The index qualifier query which is used for searching MetaIndex qualifications in IndexManager.
*/
public final class QualifierQuery {
public static final char[] NO_CHARS = new char[0];
public enum QueryCategory {
SUPER,
REF;
public static QueryCategory[] fromEncoded(char[][] encoded) {
return Stream.of(encoded).map(c -> QueryCategory.valueOf(String.valueOf(c))).toArray(QueryCategory[]::new);
}
}
private final QueryCategory[] categories;
private final char[] simpleKey;
private final char[] qualifiedKey;
private QualifierQuery(QueryCategory[] categories, char[] simpleKey, char[] qualifiedKey) {
this.categories = categories;
this.simpleKey = simpleKey;
this.qualifiedKey = qualifiedKey;
}
public static QualifierQuery fromEncodedQuery(char[] query) {
char[][] components = CharOperation.splitOn(':', query);
return new QualifierQuery(QueryCategory.fromEncoded(CharOperation.splitOn(',', components[0])), components[1],
components.length == 3 ? components[2] : NO_CHARS);
}
public static char[] encodeQuery(QueryCategory[] categories, char[] simpleKey, char[] qualifierKey) {
char[] category = CharOperation.concatWith(Stream.of(categories).map(c -> c.name().toCharArray()).toArray(char[][]::new), ',');
return CharOperation.concatWith(new char[][] {category, simpleKey, qualifierKey}, ':');
}
public QueryCategory[] getCategories() {
return this.categories;
}
public char[] getQualifiedKey() {
return this.qualifiedKey;
}
public char[] getSimpleKey() {
return this.simpleKey;
}
}