| /* |
| * 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.adapter.jdbc; |
| |
| import org.apache.calcite.plan.RelOptCluster; |
| import org.apache.calcite.plan.RelOptTable; |
| import org.apache.calcite.plan.RelTraitSet; |
| import org.apache.calcite.rel.RelNode; |
| import org.apache.calcite.rel.core.TableScan; |
| |
| import com.google.common.collect.ImmutableList; |
| |
| import java.util.List; |
| |
| /** |
| * Relational expression representing a scan of a table in a JDBC data source. |
| */ |
| public class JdbcTableScan extends TableScan implements JdbcRel { |
| final JdbcTable jdbcTable; |
| |
| protected JdbcTableScan( |
| RelOptCluster cluster, |
| RelOptTable table, |
| JdbcTable jdbcTable, |
| JdbcConvention jdbcConvention) { |
| super(cluster, cluster.traitSetOf(jdbcConvention), table); |
| this.jdbcTable = jdbcTable; |
| assert jdbcTable != null; |
| } |
| |
| @Override public RelNode copy(RelTraitSet traitSet, List<RelNode> inputs) { |
| assert inputs.isEmpty(); |
| return new JdbcTableScan( |
| getCluster(), table, jdbcTable, (JdbcConvention) getConvention()); |
| } |
| |
| public JdbcImplementor.Result implement(JdbcImplementor implementor) { |
| return implementor.result(jdbcTable.tableName(), |
| ImmutableList.of(JdbcImplementor.Clause.FROM), this, null); |
| } |
| } |
| |
| // End JdbcTableScan.java |