| // Copyright (C) 2014 The Android Open Source Project |
| // |
| // Licensed 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 com.google.gwtorm.schema.sql; |
| |
| import com.google.gwtorm.schema.ColumnModel; |
| import com.google.gwtorm.server.OrmDuplicateKeyException; |
| import com.google.gwtorm.server.OrmException; |
| import com.google.gwtorm.server.StatementExecutor; |
| |
| import java.sql.Connection; |
| import java.sql.PreparedStatement; |
| import java.sql.ResultSet; |
| import java.sql.SQLException; |
| import java.sql.Statement; |
| import java.sql.Types; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| public class DialectMaxDB extends SqlDialect { |
| |
| public DialectMaxDB() { |
| typeNames.put(Types.BIGINT, "FIXED (19,0)"); |
| typeNames.put(Types.LONGVARCHAR, "LONG UNICODE"); |
| } |
| |
| @Override |
| public boolean canDetermineIndividualBatchUpdateCounts() { |
| return false; |
| } |
| |
| @Override |
| public boolean canDetermineTotalBatchUpdateCount() { |
| return true; |
| } |
| |
| @Override |
| public int executeBatch(PreparedStatement ps) throws SQLException { |
| ps.executeBatch(); |
| return ps.getUpdateCount(); // total number of rows updated (on MaxDB) |
| } |
| |
| @Override |
| public Set<String> listSequences(Connection conn) throws SQLException { |
| final Statement s = conn.createStatement(); |
| try { |
| // lists sequences from schema associated with the current connection only |
| final ResultSet rs = |
| s.executeQuery("SELECT sequence_name FROM sequences"); |
| try { |
| HashSet<String> sequences = new HashSet<>(); |
| while (rs.next()) { |
| sequences.add(rs.getString(1).toLowerCase()); |
| } |
| return sequences; |
| } finally { |
| rs.close(); |
| } |
| } finally { |
| s.close(); |
| } |
| } |
| |
| @Override |
| public void renameColumn(StatementExecutor e, String tableName, |
| String fromColumn, ColumnModel col) throws OrmException { |
| final StringBuilder s = new StringBuilder(); |
| s.append("RENAME COLUMN "); |
| s.append(tableName).append(".").append(fromColumn); |
| s.append(" TO "); |
| s.append(col.getColumnName()); |
| e.execute(s.toString()); |
| } |
| |
| @Override |
| public OrmException convertError(String op, String entity, SQLException err) { |
| int sqlstate = getSQLStateInt(err); |
| if (sqlstate == 23000) { // UNIQUE CONSTRAINT VIOLATION |
| int errorCode = err.getErrorCode(); |
| if (errorCode == 200 || errorCode == -20) { // Duplicate Key |
| return new OrmDuplicateKeyException(entity, err); |
| } |
| } |
| return super.convertError(op, entity, err); |
| } |
| |
| @Override |
| public String getNextSequenceValueSql(String seqname) { |
| return "SELECT " + seqname + ".nextval FROM dual"; |
| } |
| |
| @Override |
| public boolean handles(String url, Connection c) throws SQLException { |
| return url.startsWith("jdbc:sapdb:"); |
| } |
| |
| @Override |
| public void renameTable(StatementExecutor e, String from, String to) |
| throws OrmException { |
| final StringBuilder r = new StringBuilder(); |
| r.append("RENAME TABLE "); |
| r.append(from); |
| r.append(" TO "); |
| r.append(to); |
| e.execute(r.toString()); |
| } |
| |
| } |