Source code: org/apache/axis/encoding/ser/EnumSerializer.java
1 /*
2 * Copyright 2001-2004 The Apache Software Foundation.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package org.apache.axis.encoding.ser;
18
19 import org.apache.axis.components.logger.LogFactory;
20 import org.apache.axis.encoding.SerializationContext;
21 import org.apache.axis.utils.Messages;
22 import org.apache.axis.wsdl.fromJava.Types;
23 import org.apache.commons.logging.Log;
24 import org.w3c.dom.Element;
25 import org.xml.sax.Attributes;
26
27 import javax.xml.namespace.QName;
28 import java.io.IOException;
29
30 /**
31 * Serializer for a JAX-RPC enum.
32 *
33 * @author Rich Scheuerle <scheu@us.ibm.com>
34 * @author Sam Ruby <rubys@us.ibm.com>
35 */
36 public class EnumSerializer extends SimpleSerializer
37 {
38 protected static Log log =
39 LogFactory.getLog(EnumSerializer.class.getName());
40
41 private java.lang.reflect.Method toStringMethod = null;
42
43 public EnumSerializer(Class javaType, QName xmlType) {
44 super(javaType, xmlType);
45 }
46
47 /**
48 * Serialize an enumeration
49 */
50 public void serialize(QName name, Attributes attributes,
51 Object value, SerializationContext context)
52 throws IOException
53 {
54 context.startElement(name, attributes);
55 context.writeString(getValueAsString(value, context));
56 context.endElement();
57 }
58
59 public String getValueAsString(Object value, SerializationContext context) {
60 // Invoke the toString method on the enumeration class and
61 // write out the result as a string.
62 try {
63 if (toStringMethod == null) {
64 toStringMethod = javaType.getMethod("toString", null);
65 }
66 return (String) toStringMethod.invoke(value, null);
67 } catch (Exception e) {
68 log.error(Messages.getMessage("exception00"), e);
69 }
70 return null;
71 }
72
73 /**
74 * Return XML schema for the specified type, suitable for insertion into
75 * the <types> element of a WSDL document, or underneath an
76 * <element> or <attribute> declaration.
77 *
78 * @param javaType the Java Class we're writing out schema for
79 * @param types the Java2WSDL Types object which holds the context
80 * for the WSDL being generated.
81 * @return a type element containing a schema simpleType/complexType
82 * @see org.apache.axis.wsdl.fromJava.Types
83 */
84 public Element writeSchema(Class javaType, Types types) throws Exception {
85 // Use Types helper method.
86 return types.writeEnumType(xmlType, javaType);
87 }
88 }