| /* |
| * Copyright (c) 2010-2012, 2016 Eike Stepper (Loehne, Germany) and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Martin Taal - initial api |
| * Eike Stepper - maintenance |
| */ |
| package org.eclipse.emf.cdo.server.internal.hibernate.tuplizer; |
| |
| import org.eclipse.emf.cdo.common.lob.CDOBlob; |
| import org.eclipse.emf.cdo.common.lob.CDOClob; |
| import org.eclipse.emf.cdo.common.lob.CDOLob; |
| |
| import org.eclipse.net4j.util.HexUtil; |
| |
| import org.hibernate.engine.spi.SessionImplementor; |
| import org.hibernate.type.StandardBasicTypes; |
| import org.hibernate.usertype.ParameterizedType; |
| import org.hibernate.usertype.UserType; |
| |
| import java.io.Serializable; |
| import java.sql.PreparedStatement; |
| import java.sql.ResultSet; |
| import java.sql.SQLException; |
| import java.sql.Types; |
| import java.util.Properties; |
| |
| /** |
| * Base class for persisting {@link CDOBlob} and {@link CDOClob}. |
| */ |
| public abstract class CDOLobUserType implements UserType, ParameterizedType |
| { |
| private static final String SEPARATOR = " - "; |
| |
| private static final int[] SQL_TYPES = { Types.CLOB }; |
| |
| public CDOLobUserType() |
| { |
| } |
| |
| public void setParameterValues(Properties arg0) |
| { |
| } |
| |
| public int[] sqlTypes() |
| { |
| return SQL_TYPES; |
| } |
| |
| public boolean isMutable() |
| { |
| return false; |
| } |
| |
| public Object deepCopy(Object value) |
| { |
| return value; |
| } |
| |
| public boolean equals(Object x, Object y) |
| { |
| if (x == y) |
| { |
| return true; |
| } |
| |
| if (x == null || y == null) |
| { |
| return false; |
| } |
| |
| return x.equals(y); |
| } |
| |
| public Object nullSafeGet(ResultSet rs, String[] names, SessionImplementor sessionImplementor, Object owner) throws SQLException |
| { |
| try |
| { |
| final String value = StandardBasicTypes.STRING.nullSafeGet(rs, names[0], sessionImplementor); |
| if (rs.wasNull()) |
| { |
| return null; |
| } |
| |
| return convertStringToLob(value); |
| } |
| catch (Exception e) |
| { |
| throw new IllegalStateException(e); |
| } |
| } |
| |
| public void nullSafeSet(PreparedStatement statement, Object value, int index, SessionImplementor sessionImplementor) throws SQLException |
| { |
| try |
| { |
| final CDOLob<?> cdoLob = (CDOLob<?>)value; |
| |
| if (value == null || cdoLob.getSize() == 0) |
| { |
| statement.setNull(index, Types.VARCHAR); |
| return; |
| } |
| statement.setString(index, convertLobToString(cdoLob)); |
| } |
| catch (Exception e) |
| { |
| throw new IllegalStateException(e); |
| } |
| } |
| |
| public Serializable disassemble(Object value) |
| { |
| return (Serializable)value; |
| } |
| |
| public Object assemble(Serializable cachedValue, Object owner) |
| { |
| return cachedValue; |
| } |
| |
| private String convertLobToString(CDOLob<?> lob) |
| { |
| return HexUtil.bytesToHex(lob.getID()) + SEPARATOR + lob.getSize(); |
| } |
| |
| private Object convertStringToLob(String lobId) |
| { |
| int pos = lobId.indexOf(SEPARATOR); |
| |
| byte[] id = HexUtil.hexToBytes(lobId.substring(0, pos)); |
| long size = Long.parseLong(lobId.substring(pos + SEPARATOR.length())); |
| return createLob(id, size); |
| } |
| |
| protected abstract Object createLob(byte[] id, long size); |
| |
| public Object replace(Object original, Object target, Object owner) |
| { |
| return original; |
| } |
| |
| public int hashCode(Object x) |
| { |
| return x.hashCode(); |
| } |
| } |