| /* |
| * 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.client.solrj.io.sql; |
| |
| import java.sql.ResultSetMetaData; |
| import java.sql.SQLException; |
| import java.sql.Types; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.solr.client.solrj.io.Tuple; |
| |
| class ResultSetMetaDataImpl implements ResultSetMetaData { |
| private final ResultSetImpl resultSet; |
| private final Tuple metadataTuple; |
| private final Tuple firstTuple; |
| |
| ResultSetMetaDataImpl(ResultSetImpl resultSet) { |
| this.resultSet = resultSet; |
| this.metadataTuple = this.resultSet.getMetadataTuple(); |
| this.firstTuple = this.resultSet.getFirstTuple(); |
| } |
| |
| @SuppressWarnings({"rawtypes"}) |
| private Class getColumnClass(int column) throws SQLException { |
| Object o = this.firstTuple.get(this.getColumnLabel(column)); |
| if(o == null) { |
| return String.class; //Nulls will only be present with Strings. |
| } else { |
| return o.getClass(); |
| } |
| } |
| |
| @Override |
| public int getColumnCount() throws SQLException { |
| List<String> fields = metadataTuple.getStrings("fields"); |
| if(fields == null) { |
| throw new SQLException("Unable to determine fields for column count"); |
| } |
| return fields.size(); |
| } |
| |
| @Override |
| public boolean isAutoIncrement(int column) throws SQLException { |
| return false; |
| } |
| |
| @Override |
| public boolean isCaseSensitive(int column) throws SQLException { |
| return false; |
| } |
| |
| @Override |
| public boolean isSearchable(int column) throws SQLException { |
| return false; |
| } |
| |
| @Override |
| public boolean isCurrency(int column) throws SQLException { |
| return false; |
| } |
| |
| @Override |
| public int isNullable(int column) throws SQLException { |
| return 0; |
| } |
| |
| @Override |
| public boolean isSigned(int column) throws SQLException { |
| return false; |
| } |
| |
| @Override |
| public int getColumnDisplaySize(int column) throws SQLException { |
| return this.getColumnLabel(column).length(); |
| } |
| |
| @Override |
| public String getColumnLabel(int column) throws SQLException { |
| @SuppressWarnings({"unchecked"}) |
| Map<String, String> aliases = (Map<String, String>) metadataTuple.get("aliases"); |
| return aliases.get(this.getColumnName(column)); |
| } |
| |
| @Override |
| public String getColumnName(int column) throws SQLException { |
| List<String> columns = metadataTuple.getStrings("fields"); |
| if(column < 1 || column > columns.size()) { |
| throw new SQLException("Column index " + column + " is not valid"); |
| } |
| return columns.get(column - 1); |
| } |
| |
| @Override |
| public String getSchemaName(int column) throws SQLException { |
| return null; |
| } |
| |
| @Override |
| public int getPrecision(int column) throws SQLException { |
| return 0; |
| } |
| |
| @Override |
| public int getScale(int column) throws SQLException { |
| return 0; |
| } |
| |
| @Override |
| public String getTableName(int column) throws SQLException { |
| return null; |
| } |
| |
| @Override |
| public String getCatalogName(int column) throws SQLException { |
| return null; |
| } |
| |
| @Override |
| public int getColumnType(int column) throws SQLException { |
| switch (getColumnTypeName(column)) { |
| case "String": |
| return Types.VARCHAR; |
| case "Integer": |
| return Types.INTEGER; |
| case "Long": |
| return Types.DOUBLE; |
| case "Double": |
| return Types.DOUBLE; |
| default: |
| return Types.JAVA_OBJECT; |
| } |
| } |
| |
| @Override |
| public String getColumnTypeName(int column) throws SQLException { |
| return this.getColumnClass(column).getSimpleName(); |
| } |
| |
| @Override |
| public boolean isReadOnly(int column) throws SQLException { |
| return false; |
| } |
| |
| @Override |
| public boolean isWritable(int column) throws SQLException { |
| return false; |
| } |
| |
| @Override |
| public boolean isDefinitelyWritable(int column) throws SQLException { |
| return false; |
| } |
| |
| @Override |
| public String getColumnClassName(int column) throws SQLException { |
| return this.getColumnClass(column).getTypeName(); |
| } |
| |
| @Override |
| public <T> T unwrap(Class<T> iface) throws SQLException { |
| return null; |
| } |
| |
| @Override |
| public boolean isWrapperFor(Class<?> iface) throws SQLException { |
| return false; |
| } |
| } |