| 1 | // Copyright 2004-2007 Jean-Francois Poilpret |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | package net.sourceforge.hiveremoting.caucho; |
| 16 | |
| 17 | import java.util.Map; |
| 18 | |
| 19 | import org.apache.commons.logging.Log; |
| 20 | import org.apache.hivemind.ApplicationRuntimeException; |
| 21 | import org.apache.hivemind.util.ConstructorUtils; |
| 22 | |
| 23 | import com.caucho.hessian.io.Deserializer; |
| 24 | import com.caucho.hessian.io.Serializer; |
| 25 | import com.caucho.hessian.io.SerializerFactory; |
| 26 | |
| 27 | /** |
| 28 | * Specific Caucho <code>SerializerFactory</code> to handle special |
| 29 | * Serializers and Deserializers as defined in configuration point |
| 30 | * <code>hiveremoting.caucho.CauchoSerializers</code>. |
| 31 | * @author Jean-Francois Poilpret |
| 32 | */ |
| 33 | public class CauchoSerializerFactory extends SerializerFactory |
| 34 | { |
| 35 | public CauchoSerializerFactory(Map config, Log logger) |
| 36 | { |
| 37 | _serializers = config; |
| 38 | _logger = logger; |
| 39 | } |
| 40 | |
| 41 | // Overridden |
| 42 | @Override protected Deserializer getDefaultDeserializer(Class clazz) |
| 43 | { |
| 44 | CauchoSerializerContribution contrib = findSerializer(clazz); |
| 45 | if (contrib != null) |
| 46 | { |
| 47 | if (contrib.getDeserializer() != null) |
| 48 | { |
| 49 | return contrib.getDeserializer(); |
| 50 | } |
| 51 | else if (contrib.getDeserializerClass() != null) |
| 52 | { |
| 53 | // Instantiate a deserializer for this class |
| 54 | return (Deserializer) instantiate(contrib.getDeserializerClass(), clazz); |
| 55 | } |
| 56 | } |
| 57 | // If no deserializer found or created before, use Hessian default one |
| 58 | return super.getDefaultDeserializer(clazz); |
| 59 | } |
| 60 | |
| 61 | // Overridden |
| 62 | @Override protected Serializer getDefaultSerializer(Class clazz) |
| 63 | { |
| 64 | CauchoSerializerContribution contrib = findSerializer(clazz); |
| 65 | if (contrib != null) |
| 66 | { |
| 67 | if (contrib.getSerializer() != null) |
| 68 | { |
| 69 | return contrib.getSerializer(); |
| 70 | } |
| 71 | else if (contrib.getSerializerClass() != null) |
| 72 | { |
| 73 | // Instantiate a serializer for this class |
| 74 | return (Serializer) instantiate(contrib.getSerializerClass(), clazz); |
| 75 | } |
| 76 | } |
| 77 | // If no serializer found or created before, use Hessian default one |
| 78 | return super.getDefaultSerializer(clazz); |
| 79 | } |
| 80 | |
| 81 | protected Object instantiate(Class clazz, Class arg) |
| 82 | { |
| 83 | try |
| 84 | { |
| 85 | return ConstructorUtils.invokeConstructor(clazz, new Object[]{arg}); |
| 86 | } |
| 87 | catch (ApplicationRuntimeException e) |
| 88 | { |
| 89 | _logger.warn("instantiate(): " + clazz, e); |
| 90 | return null; |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | protected CauchoSerializerContribution findSerializer(Class clazz) |
| 95 | { |
| 96 | // The first time strict-class true is permitted, but not for next iterations |
| 97 | return findSerializer(clazz, true); |
| 98 | } |
| 99 | |
| 100 | protected CauchoSerializerContribution findSerializer(Class clazz, boolean first) |
| 101 | { |
| 102 | CauchoSerializerContribution contrib = |
| 103 | (CauchoSerializerContribution) _serializers.get(clazz); |
| 104 | if ( (contrib != null) |
| 105 | && ((!contrib.getStrictClass()) || first)) |
| 106 | { |
| 107 | return contrib; |
| 108 | } |
| 109 | |
| 110 | // Time to stop recursivity? |
| 111 | if (Object.class.equals(clazz)) |
| 112 | { |
| 113 | return null; |
| 114 | } |
| 115 | |
| 116 | // Check interfaces if first time |
| 117 | if (first) |
| 118 | { |
| 119 | Class[] interfaces = clazz.getInterfaces(); |
| 120 | for (int i = 0; i < interfaces.length; i++) |
| 121 | { |
| 122 | contrib = (CauchoSerializerContribution) _serializers.get(clazz); |
| 123 | if (contrib != null) |
| 124 | { |
| 125 | return contrib; |
| 126 | } |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | // Check superclass(es) then (recursively) |
| 131 | return findSerializer(clazz.getSuperclass(), false); |
| 132 | } |
| 133 | |
| 134 | private final Map _serializers; |
| 135 | protected final Log _logger; |
| 136 | } |