/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.db.queryengine.plan.relational.planner.assertions;

import org.apache.iotdb.db.queryengine.plan.relational.sql.ast.SymbolReference;

import static java.util.Objects.requireNonNull;

public class MatchResult {
  public static final MatchResult NO_MATCH = new MatchResult(false, new SymbolAliases());

  private final boolean matches;
  private final SymbolAliases newAliases;

  public static MatchResult match() {
    return new MatchResult(true, new SymbolAliases());
  }

  public static MatchResult match(String alias, SymbolReference symbolReference) {
    SymbolAliases newAliases = SymbolAliases.builder().put(alias, symbolReference).build();
    return new MatchResult(true, newAliases);
  }

  public static MatchResult match(SymbolAliases newAliases) {
    return new MatchResult(true, newAliases);
  }

  public MatchResult(boolean matches) {
    this(matches, new SymbolAliases());
  }

  private MatchResult(boolean matches, SymbolAliases newAliases) {
    this.matches = matches;
    this.newAliases = requireNonNull(newAliases, "newAliases is null");
  }

  public boolean isMatch() {
    return matches;
  }

  public SymbolAliases getAliases() {
    return newAliases;
  }

  @Override
  public String toString() {
    if (matches) {
      return "MATCH";
    }
    return "NO MATCH";
  }
}
