| /* |
| * 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.solr.handler; |
| |
| import java.io.IOException; |
| import java.sql.Array; |
| import java.sql.ResultSet; |
| import java.sql.ResultSetMetaData; |
| import java.sql.SQLException; |
| import java.util.Properties; |
| |
| import org.apache.solr.client.solrj.io.comp.StreamComparator; |
| import org.apache.solr.client.solrj.io.stream.JDBCStream; |
| |
| /** |
| * Used with o.a.s.Handler.SQLHandler. |
| * |
| * @lucene.internal |
| * @since 7.0.0 |
| */ |
| public class CalciteJDBCStream extends JDBCStream { |
| private static final long serialVersionUID = 1L; |
| |
| public CalciteJDBCStream(String connectionUrl, String sqlQuery, StreamComparator definedSort, |
| Properties connectionProperties, String driverClassName) throws IOException { |
| super(connectionUrl, sqlQuery, definedSort, connectionProperties, driverClassName); |
| } |
| |
| @Override |
| protected ResultSetValueSelector determineValueSelector(int columnIdx, ResultSetMetaData metadata) |
| throws SQLException { |
| ResultSetValueSelector valueSelector = super.determineValueSelector(columnIdx, metadata); |
| if (valueSelector == null) { |
| final int columnNumber = columnIdx + 1; |
| final String columnName = metadata.getColumnLabel(columnNumber); |
| final String className = metadata.getColumnClassName(columnNumber); |
| if (Array.class.getName().equals(className)) { |
| valueSelector = new ResultSetValueSelector() { |
| @Override |
| public Object selectValue(ResultSet resultSet) throws SQLException { |
| Object o = resultSet.getObject(columnNumber); |
| if (resultSet.wasNull()) { |
| return null; |
| } |
| if (o instanceof Array) { |
| Array array = (Array) o; |
| return array.getArray(); |
| } else { |
| return o; |
| } |
| } |
| |
| @Override |
| public String getColumnName() { |
| return columnName; |
| } |
| }; |
| } |
| } |
| return valueSelector; |
| } |
| } |