| /* |
| * 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.geode.connectors.jdbc; |
| |
| import java.sql.SQLException; |
| import java.util.concurrent.atomic.LongAdder; |
| |
| import org.apache.geode.CopyHelper; |
| import org.apache.geode.annotations.Experimental; |
| import org.apache.geode.cache.CacheWriter; |
| import org.apache.geode.cache.CacheWriterException; |
| import org.apache.geode.cache.EntryEvent; |
| import org.apache.geode.cache.RegionEvent; |
| import org.apache.geode.cache.SerializedCacheValue; |
| import org.apache.geode.connectors.jdbc.internal.AbstractJdbcCallback; |
| import org.apache.geode.connectors.jdbc.internal.SqlHandler; |
| import org.apache.geode.internal.cache.InternalCache; |
| import org.apache.geode.pdx.PdxInstance; |
| |
| /** |
| * This class provides synchronous write through to a data source using JDBC. |
| * |
| * @since Geode 1.4 |
| */ |
| @Experimental |
| public class JdbcWriter<K, V> extends AbstractJdbcCallback implements CacheWriter<K, V> { |
| |
| private final LongAdder totalEvents = new LongAdder(); |
| |
| @SuppressWarnings("unused") |
| public JdbcWriter() { |
| super(); |
| } |
| |
| // Constructor for test purposes only |
| JdbcWriter(SqlHandler sqlHandler, InternalCache cache) { |
| super(sqlHandler, cache); |
| } |
| |
| |
| @Override |
| public void beforeUpdate(EntryEvent<K, V> event) throws CacheWriterException { |
| writeEvent(event); |
| } |
| |
| @Override |
| public void beforeCreate(EntryEvent<K, V> event) throws CacheWriterException { |
| writeEvent(event); |
| } |
| |
| @Override |
| public void beforeDestroy(EntryEvent<K, V> event) throws CacheWriterException { |
| writeEvent(event); |
| } |
| |
| @Override |
| public void beforeRegionDestroy(RegionEvent<K, V> event) throws CacheWriterException { |
| // this event is not sent to JDBC |
| } |
| |
| @Override |
| public void beforeRegionClear(RegionEvent<K, V> event) throws CacheWriterException { |
| // this event is not sent to JDBC |
| } |
| |
| private void writeEvent(EntryEvent<K, V> event) { |
| if (eventCanBeIgnored(event.getOperation())) { |
| return; |
| } |
| checkInitialized(event.getRegion()); |
| totalEvents.add(1); |
| try { |
| getSqlHandler().write(event.getRegion(), event.getOperation(), event.getKey(), |
| getPdxNewValue(event)); |
| } catch (SQLException e) { |
| throw JdbcConnectorException.createException(e); |
| } |
| } |
| |
| private PdxInstance getPdxNewValue(EntryEvent<K, V> event) { |
| Boolean initialPdxReadSerialized = cache.getPdxReadSerializedOverride(); |
| cache.setPdxReadSerializedOverride(true); |
| try { |
| Object newValue = event.getNewValue(); |
| if (!(newValue instanceof PdxInstance)) { |
| SerializedCacheValue<V> serializedNewValue = event.getSerializedNewValue(); |
| if (serializedNewValue != null) { |
| newValue = serializedNewValue.getDeserializedValue(); |
| } else { |
| newValue = CopyHelper.copy(newValue); |
| } |
| if (newValue != null && !(newValue instanceof PdxInstance)) { |
| String valueClassName = newValue.getClass().getName(); |
| throw new IllegalArgumentException(getClass().getSimpleName() |
| + " only supports PDX values; newValue is " + valueClassName); |
| } |
| } |
| return (PdxInstance) newValue; |
| } finally { |
| cache.setPdxReadSerializedOverride(initialPdxReadSerialized); |
| } |
| } |
| |
| long getTotalEvents() { |
| return totalEvents.longValue(); |
| } |
| } |