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/*
* 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.tuscany.service.persistence.store.jdbc.converter;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import org.apache.tuscany.spi.services.store.StoreWriteException;
import org.apache.tuscany.service.persistence.store.jdbc.Converter;
import org.apache.tuscany.service.persistence.store.jdbc.TCCLObjectInputStream;
/**
* Base class for <code>Converter</code> implementations
*
* @version $Rev$ $Date$
*/
public abstract class AbstractConverter implements Converter {
public static final int OWNER = 1;
public static final int ID = 2;
public static final int EXPIRATION = 3;
public static final int DATA = 4;
public static final int OBJECT_UPDATE = 1;
public static final int OWNER_UPDATE = 2;
public static final int ID_UPDATE = 3;
protected String findSql = "SELECT * FROM CONVERSATION_STATE WHERE OWNER = ? AND ID = ?";
protected String insertSql =
"INSERT INTO CONVERSATION_STATE (OWNER, ID, EXPIRATION, OBJECT) VALUES (?, ?, ?, ?)";
protected String updateSql = "UPDATE CONVERSATION_STATE SET OBJECT = ? WHERE OWNER = ? AND ID = ?";
protected String selectUpdateSql =
"SELECT ID FROM CONVERSATION_STATE WHERE OWNER = ? AND ID = ? FOR UPDATE";
protected String deleteSql = "DELETE FROM CONVERSATION_STATE WHERE ID = ?";
protected String deleteExpiredSql = "DELETE FROM CONVERSATION_STATE WHERE EXPIRATION <= ?";
protected String deleteRecordSql = "DELETE FROM CONVERSATION_STATE WHERE OWNER = ? AND ID = ?";
public String getInsertSql() {
return insertSql;
}
public String getUpdateSql() {
return updateSql;
}
public String getFindSql() {
return findSql;
}
public String getDeleteSql() {
return deleteSql;
}
public String getDeleteExpiredSql() {
return deleteExpiredSql;
}
public String getSelectUpdateSql() {
return selectUpdateSql;
}
public String getDeleteRecordSql() {
return deleteRecordSql;
}
public boolean findAndLock(PreparedStatement stmt, String ownerId, String id)
throws StoreWriteException {
try {
stmt.setString(OWNER, ownerId);
stmt.setString(ID, id);
return stmt.executeQuery().next();
} catch (SQLException e) {
throw new StoreWriteException(e);
}
}
public void delete(PreparedStatement stmt, String ownerId, String id) throws StoreWriteException {
try {
stmt.setString(OWNER, ownerId);
stmt.setString(ID, id);
} catch (SQLException e) {
throw new StoreWriteException(e);
}
}
protected byte[] serialize(Serializable serializable) throws IOException {
ByteArrayOutputStream bas = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(bas);
out.writeObject(serializable);
return bas.toByteArray();
}
protected Object deserialize(byte[] bytes) throws IOException, ClassNotFoundException {
return new TCCLObjectInputStream(new ByteArrayInputStream(bytes)).readObject();
}
}
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