/* * Licensed 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 com.facebook.presto.sql.planner.assertions; import com.facebook.presto.sql.planner.Symbol; import static java.util.Objects.requireNonNull; class SymbolAlias implements PlanTestSymbol { private final String alias; SymbolAlias(String alias) { this.alias = requireNonNull(alias, "alias is null"); } public Symbol toSymbol(SymbolAliases aliases) { return Symbol.from(aliases.get(alias)); } @Override public String toString() { return alias; } }