| /* |
| * 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.ignite.internal.processors.query.h2; |
| |
| import java.util.List; |
| import org.apache.ignite.internal.processors.cache.query.GridCacheTwoStepQuery; |
| import org.apache.ignite.internal.processors.query.GridQueryFieldMetadata; |
| import org.apache.ignite.internal.processors.query.h2.sql.GridSqlStatement; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * Parsing result for SELECT. |
| */ |
| @SuppressWarnings("AssignmentOrReturnOfFieldWithMutableType") |
| public class QueryParserResultSelect { |
| /** Statement. */ |
| private GridSqlStatement stmt; |
| |
| /** Two-step query, or {@code} null if this result is for local query. */ |
| private final GridCacheTwoStepQuery twoStepQry; |
| |
| /** |
| * Two-step query in SELECT FOR UPDATE case, or {@code} null if this result is for local query. |
| * If a query is for update, we need to save two variants of the this query. |
| * First variant {@link QueryParserResultSelect#twoStepQry} is used when the query is executed outside |
| * of transaction - it is executed as a plain query. The second variant of the query - is actually |
| * a "for update" query which is used when running within transaction. In this query an extra _key column |
| * is implicitly appended to query columns. This extra column is used to lock the selected rows. |
| * This column is hidden from client. |
| */ |
| private final GridCacheTwoStepQuery forUpdateTwoStepQry; |
| |
| /** Metadata for two-step query, or {@code} null if this result is for local query. */ |
| private final List<GridQueryFieldMetadata> meta; |
| |
| /** Involved cache IDs. */ |
| private final List<Integer> cacheIds; |
| |
| /** ID of the first MVCC cache. */ |
| private final Integer mvccCacheId; |
| |
| /** |
| * Sql query with cleared "FOR UPDATE" statement. |
| * This string is used when query is executed out of transaction. |
| */ |
| private final String forUpdateQryOutTx; |
| |
| /** |
| * Sql query for update. Contains additional "_key" column. |
| * This string is used when executing query within explicit transaction. |
| */ |
| private final String forUpdateQryTx; |
| |
| /** |
| * Constructor. |
| * |
| * @param stmt Statement. |
| * @param twoStepQry Distributed query plan. |
| * @param forUpdateTwoStepQry FOR UPDATE query for execution within transaction. |
| * @param meta Fields metadata. |
| * @param cacheIds Cache IDs. |
| * @param mvccCacheId ID of the first MVCC cache. |
| * @param forUpdateQryOutTx FOR UPDATE query string for execution out of transaction. |
| * @param forUpdateQryTx FOR UPDATE query string for execution within transaction. |
| */ |
| public QueryParserResultSelect( |
| GridSqlStatement stmt, |
| @Nullable GridCacheTwoStepQuery twoStepQry, |
| @Nullable GridCacheTwoStepQuery forUpdateTwoStepQry, |
| List<GridQueryFieldMetadata> meta, |
| List<Integer> cacheIds, |
| @Nullable Integer mvccCacheId, |
| String forUpdateQryOutTx, |
| String forUpdateQryTx |
| ) { |
| this.stmt = stmt; |
| this.twoStepQry = twoStepQry; |
| this.forUpdateTwoStepQry = forUpdateTwoStepQry; |
| this.meta = meta; |
| this.cacheIds = cacheIds; |
| this.mvccCacheId = mvccCacheId; |
| this.forUpdateQryOutTx = forUpdateQryOutTx; |
| this.forUpdateQryTx = forUpdateQryTx; |
| } |
| |
| /** |
| * @return Parsed SELECT statement. |
| */ |
| public GridSqlStatement statement() { |
| return stmt; |
| } |
| |
| /** |
| * @return Two-step query, or {@code} null if this result is for local query. |
| */ |
| @Nullable public GridCacheTwoStepQuery twoStepQuery() { |
| return twoStepQry; |
| } |
| |
| /** |
| * @return Two-step query for update, or {@code} null if this result is for local query. |
| */ |
| @Nullable public GridCacheTwoStepQuery forUpdateTwoStepQuery() { |
| return forUpdateTwoStepQry; |
| } |
| |
| /** |
| * @return Two-step query metadata. |
| */ |
| public List<GridQueryFieldMetadata> meta() { |
| return meta; |
| } |
| |
| /** |
| * @return Whether split is needed for this query. |
| */ |
| public boolean splitNeeded() { |
| return twoStepQry != null; |
| } |
| |
| /** |
| * @return Involved cache IDs. |
| */ |
| public List<Integer> cacheIds() { |
| return cacheIds; |
| } |
| |
| /** |
| * @return ID of the first MVCC cache. |
| */ |
| public Integer mvccCacheId() { |
| return mvccCacheId; |
| } |
| |
| /** |
| * @return Whether this is a SELECT for MVCC caches. |
| */ |
| public boolean mvccEnabled() { |
| return mvccCacheId != null; |
| } |
| |
| /** |
| * @return Whether this is FOR UPDATE query. |
| */ |
| public boolean forUpdate() { |
| return forUpdateQryTx != null; |
| } |
| |
| /** |
| * @return Sql FOR UPDATE query for execution out of transaction. |
| */ |
| public String forUpdateQueryOutTx() { |
| return forUpdateQryOutTx; |
| } |
| |
| /** |
| * @return Sql FOR UPDATE query for execution within transaction. |
| */ |
| public String forUpdateQueryTx() { |
| return forUpdateQryTx; |
| } |
| } |