| /* |
| * 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.opennlp.corpus_server.impl; |
| |
| import java.io.IOException; |
| import java.sql.Blob; |
| import java.sql.Connection; |
| import java.sql.PreparedStatement; |
| import java.sql.ResultSet; |
| import java.sql.SQLException; |
| import java.sql.Statement; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| import javax.sql.DataSource; |
| |
| import org.apache.opennlp.corpus_server.store.CorporaChangeListener; |
| import org.apache.opennlp.corpus_server.store.CorpusStore; |
| |
| public class DerbyCorpusStore implements CorpusStore { |
| |
| private final static Logger LOGGER = Logger.getLogger( |
| DerbyCorpusStore.class .getName()); |
| |
| private DataSource dataSource; |
| private DerbyCorporaStore store; |
| private final String corpusName; |
| |
| DerbyCorpusStore(DataSource dataSource, DerbyCorporaStore store, String corpusName) { |
| this.dataSource = dataSource; |
| this.store = store; |
| this.corpusName = corpusName; |
| } |
| |
| @Override |
| public String getCorpusId() { |
| return corpusName; |
| } |
| |
| @Override |
| public byte[] getCAS(String casId) throws IOException { |
| |
| byte casBytes[] = null; |
| |
| try { |
| Connection conn = dataSource.getConnection(); |
| |
| PreparedStatement ps = conn.prepareStatement("select * from " + |
| corpusName + " where name=?"); |
| ps.setString(1, casId); |
| |
| ResultSet casResult = ps.executeQuery(); |
| |
| if (casResult.next()) { |
| casBytes = casResult.getBytes(2); |
| } |
| |
| casResult.close(); |
| ps.close(); |
| conn.close(); |
| |
| } catch (SQLException e) { |
| |
| if (LOGGER.isLoggable(Level.SEVERE)) { |
| LOGGER.log(Level.SEVERE, "Failed to retrieve CAS: " + |
| casId, e); |
| } |
| |
| throw new IOException(e); |
| } |
| |
| return casBytes; |
| } |
| |
| @Override |
| public void addCAS(String casID, byte[] content) throws IOException { |
| |
| try { |
| Connection conn = dataSource.getConnection(); |
| PreparedStatement ps = conn.prepareStatement("insert into " + |
| corpusName + " values (?, ?)"); |
| |
| ps.setString(1, casID); |
| |
| Blob b = conn.createBlob(); |
| b.setBytes(1, content); |
| ps.setBlob(2, b); |
| |
| ps.executeUpdate(); |
| |
| conn.commit(); |
| |
| ps.close(); |
| conn.close(); |
| } catch (SQLException e) { |
| |
| if (LOGGER.isLoggable(Level.SEVERE)) { |
| LOGGER.log(Level.SEVERE, "Failed to add CAS: " + |
| casID, e); |
| } |
| |
| throw new IOException(e); |
| } |
| |
| for (CorporaChangeListener listener : store.getListeners()) { |
| listener.addedCAS(this, casID); |
| } |
| } |
| |
| @Override |
| public void updateCAS(String casID, byte[] content) throws IOException { |
| try { |
| Connection conn = dataSource.getConnection(); |
| PreparedStatement ps = conn.prepareStatement("update " + |
| corpusName + " set cas = ? where name = ?"); |
| |
| ps.setString(2, casID); |
| |
| Blob b = conn.createBlob(); |
| b.setBytes(1, content); |
| ps.setBlob(1, b); |
| |
| ps.executeUpdate(); |
| |
| conn.commit(); |
| |
| ps.close(); |
| conn.close(); |
| } catch (SQLException e) { |
| |
| if (LOGGER.isLoggable(Level.SEVERE)) { |
| LOGGER.log(Level.SEVERE, "Failed to add CAS: " + |
| casID, e); |
| } |
| |
| throw new IOException(e); |
| } |
| |
| for (CorporaChangeListener listener : store.getListeners()) { |
| listener.updatedCAS(this, casID); |
| } |
| } |
| |
| @Override |
| public void removeCAS(String casID) throws IOException { |
| |
| try { |
| Connection conn = dataSource.getConnection(); |
| PreparedStatement ps = conn.prepareStatement("delete from " + |
| corpusName + " where name = ?"); |
| |
| ps.setString(1, casID); |
| |
| ps.executeUpdate(); |
| |
| conn.commit(); |
| |
| ps.close(); |
| conn.close(); |
| } catch (SQLException e) { |
| |
| if (LOGGER.isLoggable(Level.SEVERE)) { |
| LOGGER.log(Level.SEVERE, "Failed to remove CAS: " + |
| casID, e); |
| } |
| |
| throw new IOException(e); |
| } |
| |
| for (CorporaChangeListener listener : store.getListeners()) { |
| listener.removedCAS(this, casID); |
| } |
| } |
| |
| @Override |
| public byte[] getTypeSystem() throws IOException { |
| |
| byte tsBytes[]; |
| |
| try { |
| Connection conn = dataSource.getConnection(); |
| Statement s = conn.createStatement(); |
| ResultSet tsResult = s.executeQuery("select * FROM " + corpusName + |
| " WHERE name='_typesystem'"); |
| |
| if (tsResult.next()) { |
| tsBytes = tsResult.getBytes(2); |
| } |
| else { |
| throw new IOException("Failed to retrieve type system!"); |
| } |
| |
| tsResult.close(); |
| s.close(); |
| conn.close(); |
| } catch (SQLException e) { |
| |
| if (LOGGER.isLoggable(Level.SEVERE)) { |
| LOGGER.log(Level.SEVERE, "Failed to retrieve type system", e); |
| } |
| |
| throw new IOException(e); |
| } |
| |
| return tsBytes; |
| } |
| |
| @Override |
| public byte[] getIndexMapping() throws IOException { |
| byte indexMappingBytes[] = null; |
| |
| try { |
| Connection conn = dataSource.getConnection(); |
| Statement s = conn.createStatement(); |
| ResultSet indexMappingResult = s.executeQuery("select * FROM " + corpusName + |
| " WHERE name='_indexMapping'"); |
| |
| if (indexMappingResult.next()) { |
| indexMappingBytes = indexMappingResult.getBytes(2); |
| } |
| |
| indexMappingResult.close(); |
| s.close(); |
| conn.close(); |
| } catch (SQLException e) { |
| |
| if (LOGGER.isLoggable(Level.SEVERE)) { |
| LOGGER.log(Level.SEVERE, "Failed to retrieve type system", e); |
| } |
| |
| throw new IOException(e); |
| } |
| |
| return indexMappingBytes; |
| } |
| } |