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Java > Open Source Codes > org > jboss > axis > encoding > ser > VectorSerializer


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55
56 package org.jboss.axis.encoding.ser;
57
58 import org.jboss.axis.Constants;
59 import org.jboss.axis.encoding.SerializationContext;
60 import org.jboss.axis.encoding.Serializer;
61 import org.jboss.axis.utils.IdentityHashMap;
62 import org.jboss.axis.utils.Messages;
63 import org.jboss.axis.wsdl.fromJava.Types;
64 import org.jboss.logging.Logger;
65 import org.w3c.dom.Element JavaDoc;
66 import org.xml.sax.Attributes JavaDoc;
67
68 import javax.xml.namespace.QName JavaDoc;
69 import java.io.IOException JavaDoc;
70 import java.util.Iterator JavaDoc;
71 import java.util.Vector JavaDoc;
72
73 /**
74  * A <code>VectorSerializer</code> is be used to serialize and
75  * deserialize Vectors using the <code>SOAP-ENC</code>
76  * encoding style.<p>
77  *
78  * @author Rich Scheuerle (scheu@us.ibm.com)
79  */

80
81 public class VectorSerializer implements Serializer
82 {
83    private static Logger log = Logger.getLogger(VectorSerializer.class.getName());
84
85    /**
86     * Serialize a Vector
87     * <p/>
88     * Walk the collection of keys, serializing each key/value pair
89     * inside an <item> element.
90     *
91     * @param name the desired QName for the element
92     * @param attributes the desired attributes for the element
93     * @param value the Object to serialize
94     * @param context the SerializationContext in which to do all this
95     * @throws IOException
96     */

97    public void serialize(QName JavaDoc name, Attributes JavaDoc attributes,
98                          Object JavaDoc value, SerializationContext context)
99            throws IOException JavaDoc
100    {
101       if (!(value instanceof Vector JavaDoc))
102          throw new IOException JavaDoc(Messages.getMessage("noVector00", "VectorSerializer",
103                  value.getClass().getName()));
104
105       Vector JavaDoc vector = (Vector JavaDoc)value;
106
107       // Check for circular references.
108
if (isRecursive(new IdentityHashMap(), vector))
109       {
110          throw new IOException JavaDoc(Messages.getMessage("badVector00"));
111       }
112
113       context.startElement(name, attributes);
114       for (Iterator JavaDoc i = vector.iterator(); i.hasNext();)
115       {
116          Object JavaDoc item = i.next();
117          context.serialize(Constants.QNAME_LITERAL_ITEM, null, item);
118       }
119       context.endElement();
120    }
121
122    public boolean isRecursive(IdentityHashMap map, Vector JavaDoc vector)
123    {
124       map.add(vector);
125       boolean recursive = false;
126       for (int i = 0; i < vector.size() && !recursive; i++)
127       {
128          Object JavaDoc o = vector.get(i);
129          if (o instanceof Vector JavaDoc)
130          {
131             if (map.containsKey(o))
132             {
133                return true;
134             }
135             else
136             {
137                recursive = isRecursive(map, (Vector JavaDoc)o);
138             }
139          }
140       }
141       return recursive;
142    }
143
144    public String JavaDoc getMechanismType()
145    {
146       return Constants.AXIS_SAX;
147    }
148
149    /**
150     * Return XML schema for the specified type, suitable for insertion into
151     * the &lt;types&gt; element of a WSDL document, or underneath an
152     * &lt;element&gt; or &lt;attribute&gt; declaration.
153     *
154     * @param javaType the Java Class we're writing out schema for
155     * @param types the Java2WSDL Types object which holds the context
156     * for the WSDL being generated.
157     * @return a type element containing a schema simpleType/complexType
158     * @see org.jboss.axis.wsdl.fromJava.Types
159     */

160    public Element JavaDoc writeSchema(Class JavaDoc javaType, Types types) throws Exception JavaDoc
161    {
162       Element JavaDoc complexType = types.createElement("complexType");
163       complexType.setAttribute("name", "Vector");
164       types.writeSchemaElement(Constants.SOAP_VECTOR, complexType);
165       Element JavaDoc seq = types.createElement("sequence");
166       complexType.appendChild(seq);
167
168       Element JavaDoc element = types.createElement("element");
169       element.setAttribute("name", "item");
170       element.setAttribute("minOccurs", "0");
171       element.setAttribute("maxOccurs", "unbounded");
172       element.setAttribute("type", "xsd:anyType");
173       seq.appendChild(element);
174
175       return complexType;
176    }
177 }
178
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