1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20 package org.apache.directory.api.ldap.schemaloader;
21
22
23 import org.apache.directory.api.i18n.I18n;
24 import org.apache.directory.api.ldap.model.entry.Attribute;
25 import org.apache.directory.api.ldap.model.entry.Value;
26 import org.apache.directory.api.ldap.model.exception.LdapException;
27 import org.apache.directory.api.ldap.model.exception.LdapInvalidAttributeValueException;
28 import org.apache.directory.api.ldap.model.message.ResultCodeEnum;
29
30
31 /**
32 * A class loader that loads classes from an attribute within an entry.
33 *
34 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
35 */
36 public class AttributeClassLoader extends ClassLoader
37 {
38
39 /** The attribute. */
40 private Attribute attribute;
41
42
43 /**
44 * Instantiates a new attribute class loader.
45 */
46 public AttributeClassLoader()
47 {
48 super( AttributeClassLoader.class.getClassLoader() );
49 }
50
51
52 /**
53 * Sets the attribute.
54 *
55 * @param attribute the new attribute
56 * @throws LdapException if the attribute is not binary.
57 */
58 public void setAttribute( Attribute attribute ) throws LdapException
59 {
60 if ( attribute.isHumanReadable() )
61 {
62 throw new LdapInvalidAttributeValueException( ResultCodeEnum.CONSTRAINT_VIOLATION,
63 I18n.err( I18n.ERR_10001 ) );
64 }
65
66 this.attribute = attribute;
67 }
68
69
70 /**
71 * {@inheritDoc}
72 */
73 public Class<?> findClass( String name ) throws ClassNotFoundException
74 {
75 byte[] classBytes = null;
76
77 Value<?> value = attribute.get();
78
79 if ( value.isHumanReadable() )
80 {
81 throw new ClassNotFoundException( I18n.err( I18n.ERR_10002 ) );
82 }
83
84 classBytes = value.getBytes();
85
86 return defineClass( name, classBytes, 0, classBytes.length );
87 }
88 }