| /* |
| * 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.calcite.sql.validate; |
| |
| import org.apache.calcite.rel.type.RelDataType; |
| import org.apache.calcite.sql.SqlNode; |
| import org.apache.calcite.sql.SqlWith; |
| import org.apache.calcite.sql.SqlWithItem; |
| import org.apache.calcite.util.Util; |
| |
| import org.checkerframework.checker.nullness.qual.Nullable; |
| |
| import static java.util.Objects.requireNonNull; |
| |
| /** |
| * Namespace for <code>WITH</code> clause. |
| */ |
| public class WithNamespace extends AbstractNamespace { |
| //~ Instance fields -------------------------------------------------------- |
| |
| private final SqlWith with; |
| |
| //~ Constructors ----------------------------------------------------------- |
| |
| /** |
| * Creates a TableConstructorNamespace. |
| * |
| * @param validator Validator |
| * @param with WITH clause |
| * @param enclosingNode Enclosing node |
| */ |
| WithNamespace(SqlValidatorImpl validator, |
| SqlWith with, |
| SqlNode enclosingNode) { |
| super(validator, enclosingNode); |
| this.with = with; |
| } |
| |
| //~ Methods ---------------------------------------------------------------- |
| |
| @Override protected RelDataType validateImpl(RelDataType targetRowType) { |
| for (SqlNode withItem : with.withList) { |
| validator.validateWithItem((SqlWithItem) withItem); |
| } |
| final SqlValidatorScope scope2 = |
| validator.getWithScope(Util.last(with.withList)); |
| final SqlValidatorNamespace bodyNamespace = |
| requireNonNull(validator.getNamespace(with.body), "namespace"); |
| |
| validator.validateQuery(with.body, scope2, targetRowType); |
| final RelDataType rowType = validator.getValidatedNodeType(with.body); |
| validator.setValidatedNodeType(with, rowType); |
| mustFilterFields = bodyNamespace.getMustFilterFields(); |
| return rowType; |
| } |
| |
| @Override public @Nullable SqlNode getNode() { |
| return with; |
| } |
| } |