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// **********************************************************************
//
// Copyright (c) 2003-2008 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
import Demo.*;
//
// This servant is a default servant. The book identity is retrieved
// from the Ice.Current object.
//
class BookI extends _BookDisp
{
public void
ice_ping(Ice.Current current)
{
SQLRequestContext context = SQLRequestContext.getCurrentContext();
assert context != null;
Integer id = new Integer(current.id.name);
try
{
java.sql.PreparedStatement stmt = context.prepareStatement("SELECT * FROM books WHERE id = ?");
stmt.setInt(1, id);
java.sql.ResultSet rs = stmt.executeQuery();
if(!rs.next())
{
throw new Ice.ObjectNotExistException();
}
}
catch(java.sql.SQLException e)
{
// Log the error, and raise an UnknownException.
error(e);
Ice.UnknownException ex = new Ice.UnknownException();
ex.initCause(e);
throw ex;
}
}
public BookDescription
describe(Ice.Current current)
{
SQLRequestContext context = SQLRequestContext.getCurrentContext();
assert context != null;
Integer id = new Integer(current.id.name);
try
{
java.sql.PreparedStatement stmt = context.prepareStatement("SELECT * FROM books WHERE id = ?");
stmt.setInt(1, id);
java.sql.ResultSet rs = stmt.executeQuery();
if(!rs.next())
{
throw new Ice.ObjectNotExistException();
}
return extractDescription(context, rs, current.adapter);
}
catch(java.sql.SQLException e)
{
// Log the error, and raise an UnknownException.
error(e);
Ice.UnknownException ex = new Ice.UnknownException();
ex.initCause(e);
throw ex;
}
}
public void
destroy(Ice.Current current)
{
SQLRequestContext context = SQLRequestContext.getCurrentContext();
assert context != null;
Integer id = new Integer(current.id.name);
try
{
java.sql.PreparedStatement stmt = context.prepareStatement("DELETE FROM books WHERE id = ?");
stmt.setInt(1, id);
int count = stmt.executeUpdate();
if(count == 0)
{
throw new Ice.ObjectNotExistException();
}
}
catch(java.sql.SQLException e)
{
// Log the error, and raise an UnknownException.
error(e);
Ice.UnknownException ex = new Ice.UnknownException();
ex.initCause(e);
throw ex;
}
}
public String
getRenter(Ice.Current current)
throws BookNotRentedException
{
SQLRequestContext context = SQLRequestContext.getCurrentContext();
assert context != null;
Integer id = new Integer(current.id.name);
try
{
java.sql.PreparedStatement stmt = context.prepareStatement("SELECT * FROM books WHERE id = ?");
stmt.setInt(1, id);
java.sql.ResultSet rs = stmt.executeQuery();
if(!rs.next())
{
throw new Ice.ObjectNotExistException();
}
int renterId = rs.getInt("renter_id");
if(rs.wasNull())
{
throw new BookNotRentedException();
}
stmt = context.prepareStatement("SELECT * FROM customers WHERE id = ?");
stmt.setInt(1, renterId);
rs = stmt.executeQuery();
boolean next = rs.next();
assert next;
return rs.getString("name");
}
catch(java.sql.SQLException e)
{
// Log the error, and raise an UnknownException.
error(e);
Ice.UnknownException ex = new Ice.UnknownException();
ex.initCause(e);
throw ex;
}
}
public void
rentBook(String name, Ice.Current current)
throws BookRentedException
{
SQLRequestContext context = SQLRequestContext.getCurrentContext();
assert context != null;
Integer id = new Integer(current.id.name);
try
{
java.sql.PreparedStatement stmt = context.prepareStatement("SELECT * FROM books WHERE id = ?");
stmt.setInt(1, id);
java.sql.ResultSet rs = stmt.executeQuery();
if(!rs.next())
{
throw new Ice.ObjectNotExistException();
}
rs.getInt("renter_id");
if(!rs.wasNull())
{
throw new BookRentedException();
}
stmt = context.prepareStatement("SELECT * FROM customers WHERE name = ?");
stmt.setString(1, name);
rs = stmt.executeQuery();
Integer renterId = null;
if(rs.next())
{
renterId = rs.getInt("id");
assert !rs.next();
}
else
{
stmt = context.prepareStatement("INSERT into customers (name) VALUES(?)",
java.sql.Statement.RETURN_GENERATED_KEYS);
stmt.setString(1, name);
int count = stmt.executeUpdate();
assert count == 1;
rs = stmt.getGeneratedKeys();
boolean next = rs.next();
assert next;
renterId = rs.getInt(1);
}
stmt = context.prepareStatement("UPDATE books SET renter_id = ? WHERE id = ?");
stmt.setInt(1, renterId);
stmt.setInt(2, id);
int count = stmt.executeUpdate();
assert count == 1;
// Commit the transaction.
context.commit();
}
catch(java.sql.SQLException e)
{
// Log the error, and raise an UnknownException.
error(e);
Ice.UnknownException ex = new Ice.UnknownException();
ex.initCause(e);
throw ex;
}
}
public void
returnBook(Ice.Current current)
throws BookNotRentedException
{
SQLRequestContext context = SQLRequestContext.getCurrentContext();
assert context != null;
Integer id = new Integer(current.id.name);
try
{
java.sql.PreparedStatement stmt = context.prepareStatement("SELECT * FROM books WHERE id = ?");
stmt.setInt(1, id);
java.sql.ResultSet rs = stmt.executeQuery();
if(!rs.next())
{
throw new Ice.ObjectNotExistException();
}
Integer renterId = rs.getInt("renter_id");
if(rs.wasNull())
{
throw new BookNotRentedException();
}
stmt = context.prepareStatement("UPDATE books SET renter_id = NULL WHERE id = ?");
stmt.setInt(1, id);
int count = stmt.executeUpdate();
assert count == 1;
}
catch(java.sql.SQLException e)
{
// Log the error, and raise an UnknownException.
error(e);
Ice.UnknownException ex = new Ice.UnknownException();
ex.initCause(e);
throw ex;
}
}
BookI(Ice.Logger logger)
{
_logger = logger;
}
static Ice.Identity
createIdentity(Integer bookId)
{
Ice.Identity id = new Ice.Identity();
id.category = "book";
id.name = bookId.toString();
return id;
}
static BookDescription
extractDescription(SQLRequestContext context, java.sql.ResultSet rs, Ice.ObjectAdapter adapter)
throws java.sql.SQLException
{
Integer id = rs.getInt("id");
BookDescription desc = new BookDescription();
desc.isbn = rs.getString("isbn");
desc.title = rs.getString("title");
desc.authors = new java.util.LinkedList<String>();
desc.proxy = BookPrxHelper.uncheckedCast(adapter.createProxy(createIdentity(id)));
java.sql.PreparedStatement stmt = null;
// Query for the rentedBy.
Integer renterId = rs.getInt("renter_id");
if(!rs.wasNull())
{
stmt = context.prepareStatement("SELECT * FROM customers WHERE id = ?");
stmt.setInt(1, renterId);
java.sql.ResultSet customerRS = stmt.executeQuery();
boolean next = customerRS.next();
assert next;
desc.rentedBy = customerRS.getString(2);
}
// Query for the authors.
stmt = context.prepareStatement("SELECT * FROM authors INNER JOIN authors_books ON " +
"authors.id=authors_books.author_id AND authors_books.book_id = ?");
stmt.setInt(1, id);
java.sql.ResultSet authorRS = stmt.executeQuery();
while(authorRS.next())
{
desc.authors.add(authorRS.getString("name"));
}
return desc;
}
private void
error(Exception ex)
{
java.io.StringWriter sw = new java.io.StringWriter();
java.io.PrintWriter pw = new java.io.PrintWriter(sw);
ex.printStackTrace(pw);
pw.flush();
_logger.error("BookI: error:\n" + sw.toString());
}
private Ice.Logger _logger;
}
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