| /* |
| * 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.nlpcraft.model.tools.sqlgen; |
| |
| import org.apache.nlpcraft.model.*; |
| import java.util.Collection; |
| import java.util.stream.*; |
| |
| /** |
| * Object presentation of SQL schema. This representation gives object model for the SQL metadata |
| * that was extracted from RDBMS and added to the data model stub by {@link NCSqlModelGenerator} utility. |
| * |
| * @see NCSqlSchemaBuilder#makeSchema(NCModel) |
| */ |
| public interface NCSqlSchema { |
| /** |
| * Gets collection of tables for this SQL schema. |
| * |
| * @return Collection of tables for this SQL schema. |
| */ |
| Collection<NCSqlTable> getTables(); |
| |
| /** |
| * Gets collection of joins for this SQL schema. |
| * |
| * @return Collection of joins for this SQL schema. |
| */ |
| Collection<NCSqlJoin> getJoins(); |
| |
| /** |
| * Creates and returns collection of all SQL columns across all tables in given schema. It is |
| * equivalent to: |
| * <pre class="brush: java"> |
| * return getTables().stream().flatMap(t -> t.getColumns().stream()).collect(Collectors.toList()); |
| * </pre> |
| * |
| * @return Collection of all SQL columns across all tables in given schema. |
| */ |
| default Collection<NCSqlColumn> getAllColumns() { |
| return getTables().stream().flatMap(t -> t.getColumns().stream()).collect(Collectors.toList()); |
| } |
| } |