| ArraySerializer.java |
/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 2001-2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Axis" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.jboss.axis.encoding.ser;
import org.jboss.axis.AxisEngine;
import org.jboss.axis.Constants;
import org.jboss.axis.MessageContext;
import org.jboss.axis.encoding.SerializationContext;
import org.jboss.axis.encoding.Serializer;
import org.jboss.axis.schema.SchemaVersion;
import org.jboss.axis.soap.SOAPConstants;
import org.jboss.axis.utils.JavaUtils;
import org.jboss.axis.utils.Messages;
import org.jboss.axis.wsdl.fromJava.Types;
import org.jboss.logging.Logger;
import org.w3c.dom.Element;
import org.xml.sax.Attributes;
import org.xml.sax.helpers.AttributesImpl;
import javax.xml.namespace.QName;
import java.io.IOException;
import java.lang.reflect.Array;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
/**
* An ArraySerializer handles serializing of arrays.
* <p/>
* Some code borrowed from ApacheSOAP - thanks to Matt Duftler!
*
* @author Glen Daniels (gdaniels@macromedia.com)
* <p/>
* Multi-reference stuff:
* @author Rich Scheuerle (scheu@us.ibm.com)
*/
public class ArraySerializer implements Serializer
{
private static Logger log = Logger.getLogger(ArraySerializer.class.getName());
// Maps the a componentType Class to its type QName
// Usefull when you want to override the default
private HashMap componentTypeMap = new HashMap();
/**
* Serialize an element that is an array.
*
* @param name is the element name
* @param attributes are the attributes...serialize is free to add more.
* @param value is the value
* @param context is the SerializationContext
*/
public void serialize(QName name, Attributes attributes,
Object value, SerializationContext context)
throws IOException
{
if (value == null)
throw new IOException(Messages.getMessage("cantDoNullArray00"));
MessageContext msgContext = context.getMessageContext();
SchemaVersion schema = SchemaVersion.SCHEMA_2001;
SOAPConstants soap = SOAPConstants.SOAP11_CONSTANTS;
if (msgContext != null)
{
schema = msgContext.getSchemaVersion();
soap = msgContext.getSOAPConstants();
}
Class cls = value.getClass();
Collection list = null;
if (!cls.isArray())
{
if (!(value instanceof Collection))
{
throw new IOException(Messages.getMessage("cantSerialize00", cls.getName()));
}
list = (Collection)value;
}
// Get the componentType of the array/list
Class componentType;
if (list == null)
{
componentType = cls.getComponentType();
}
else
{
componentType = Object.class;
}
// Explicitly registered component type qnames have priority
// In most cases we won't have them unless a subclass sets it explicitly
// TDI 17-Jun-2004
QName componentQName = (QName)componentTypeMap.get(componentType);
String dims = "";
// Check to see if componentType is also an array.
// If so, set the componentType to the most nested non-array
// componentType. Increase the dims string by "[]"
// each time through the loop.
// Note from Rich Scheuerle:
// This won't handle Lists of Lists or
// arrays of Lists....only arrays of arrays.
// Only do this, if the type was not explicitly registered
if (componentQName == null)
{
while (componentType.isArray())
{
componentType = componentType.getComponentType();
if (soap == SOAPConstants.SOAP12_CONSTANTS)
dims += "* ";
else
dims += "[]";
}
}
// Get the QName of the componentType.
if (componentQName == null)
{
componentQName = context.getQNameForClass(componentType);
}
// If not found, look at the super classes
if (componentQName == null)
{
Class searchCls = componentType;
while (searchCls != null && componentQName == null)
{
searchCls = searchCls.getSuperclass();
componentQName = context.getQNameForClass(searchCls);
}
if (componentQName != null)
{
componentType = searchCls;
}
}
if (componentQName == null)
{
throw new IOException(Messages.getMessage("noType00", componentType.getName()));
}
String prefix = context.getPrefixForURI(componentQName.getNamespaceURI());
String compType = prefix + ":" + componentQName.getLocalPart();
int len = (list == null) ? Array.getLength(value) : list.size();
String arrayType;
if (soap == SOAPConstants.SOAP12_CONSTANTS)
arrayType = dims + len;
else
arrayType = dims + "[" + len + "]";
// Discover whether array can be serialized directly as a two-dimensional
// array (i.e. arrayType=int[2,3]) versus an array of arrays.
// Benefits:
// - Less text passed on the wire.
// - Easier to read wire format
// - Tests the deserialization of multi-dimensional arrays.
// Drawbacks:
// - Is not safe! It is possible that the arrays are multiply
// referenced. Transforming into a 2-dim array will cause the
// multi-referenced information to be lost. Plus there is no
// way to determine whether the arrays are multi-referenced.
// - .NET currently (Dec 2002) does not support 2D SOAP-encoded arrays
//
// OLD Comment as to why this was ENABLED:
// It is necessary for
// interoperability (echo2DStringArray). It is 'safe' for now
// because Axis treats arrays as non multi-ref (see the note
// in SerializationContextImpl.isPrimitive(...) )
// More complicated processing is necessary for 3-dim arrays, etc.
//
// Axis 1.1 - December 2002
// Turned this OFF because Microsoft .NET can not deserialize
// multi-dimensional SOAP-encoded arrays, and this interopability
// is pretty high visibility. Make it a global configuration parameter:
// <parameter name="enable2DArrayEncoding" value="true"/> (tomj)
//
// Check the message context to see if we should turn 2D processing ON
// Default is OFF
boolean enable2Dim = false;
// Vidyanand : added this check
if (msgContext != null)
{
enable2Dim =
JavaUtils.isTrueExplicitly(msgContext.getAxisEngine().getOption(AxisEngine.PROP_TWOD_ARRAY_ENCODING));
}
int dim2Len = -1;
if (enable2Dim && !dims.equals(""))
{
if (cls.isArray() && len > 0)
{
boolean okay = true;
// Make sure all of the component arrays are the same size
for (int i = 0; i < len && okay; i++)
{
Object elementValue = Array.get(value, i);
if (elementValue == null)
okay = false;
else if (dim2Len < 0)
{
dim2Len = Array.getLength(elementValue);
if (dim2Len <= 0)
{
okay = false;
}
}
else if (dim2Len != Array.getLength(elementValue))
{
okay = false;
}
}
// Update the arrayType to use mult-dim array encoding
if (okay)
{
dims = dims.substring(0, dims.length() - 2);
if (soap == SOAPConstants.SOAP12_CONSTANTS)
arrayType = dims + len + " " + dim2Len;
else
arrayType = dims + "[" + len + "," + dim2Len + "]";
}
else
{
dim2Len = -1;
}
}
}
// Need to distinguish if this is array processing for an
// actual schema array or for a maxOccurs usage.
// For the maxOccurs case, the currentXMLType of the context is
// the same as the componentQName.
boolean maxOccursUsage = (msgContext != null && !msgContext.isEncoded()) &&
componentQName.equals(context.getCurrentXMLType());
if (!maxOccursUsage)
{
AttributesImpl attrs;
if (attributes == null)
{
attrs = new AttributesImpl();
}
else if (attributes instanceof AttributesImpl)
{
attrs = (AttributesImpl)attributes;
}
else
{
attrs = new AttributesImpl(attributes);
}
if (attrs.getIndex(soap.getEncodingURI(), soap.getAttrItemType()) == -1)
{
String encprefix =
context.getPrefixForURI(soap.getEncodingURI());
if (soap != SOAPConstants.SOAP12_CONSTANTS)
{
compType = compType + arrayType;
attrs.addAttribute(soap.getEncodingURI(),
soap.getAttrItemType(),
encprefix + ":arrayType",
"CDATA",
compType);
}
else
{
attrs.addAttribute(soap.getEncodingURI(),
soap.getAttrItemType(),
encprefix + ":itemType",
"CDATA",
compType);
attrs.addAttribute(soap.getEncodingURI(),
"arraySize",
encprefix + ":arraySize",
"CDATA",
arrayType);
}
}
// Force type to be SOAP_ARRAY for all array serialization.
//
// There are two choices here:
// Force the type to type=SOAP_ARRAY
// Pros: More interop test successes.
// Cons: Since we have specific type information it
// is more correct to use it. Plus the specific
// type information may be important on the
// server side to disambiguate overloaded operations.
// Use the specific type information:
// Pros: The specific type information is more correct
// and may be useful for operation overloading.
// Cons: More interop test failures (as of 2/6/2002).
//
int typeI = attrs.getIndex(schema.getXsiURI(),
"type");
if (typeI != -1)
{
String qname =
context.getPrefixForURI(schema.getXsiURI(),
"xsi") + ":type";
QName soapArray;
if (soap == SOAPConstants.SOAP12_CONSTANTS)
{
soapArray = Constants.SOAP_ARRAY12;
}
else
{
soapArray = Constants.SOAP_ARRAY;
}
attrs.setAttribute(typeI,
schema.getXsiURI(),
"type",
qname,
"CDATA",
context.qName2String(soapArray));
}
attributes = attrs;
}
// For the maxOccurs case, each item is named with the QName
// we got in the arguments. For normal array case, we write an element with
// that QName, and then serialize each item as <item>
QName elementName = name;
Attributes serializeAttr = attributes;
if (!maxOccursUsage)
{
serializeAttr = null; // since we are putting them here
context.startElement(name, attributes);
elementName = Constants.QNAME_LITERAL_ITEM;
}
if (dim2Len < 0)
{
// Normal case, serialize each array element
if (list == null)
{
for (int index = 0; index < len; index++)
{
Object aValue = Array.get(value, index);
// Serialize the element.
context.serialize(elementName, serializeAttr, aValue,
componentQName, // prefered type QName
true, // Send null values
Boolean.FALSE); // Don't send xsi:type if it matches preferred QName
}
}
else
{
for (Iterator iterator = list.iterator(); iterator.hasNext();)
{
Object aValue = iterator.next();
// Serialize the element.
context.serialize(elementName, serializeAttr, aValue,
componentQName, // prefered type QName
true, // Send null values
Boolean.FALSE); // Don't send xsi:type if it matches preferred QName
}
}
}
else
{
// Serialize as a 2 dimensional array
for (int index = 0; index < len; index++)
{
for (int index2 = 0; index2 < dim2Len; index2++)
{
Object aValue = Array.get(Array.get(value, index), index2);
context.serialize(elementName, null, aValue);
}
}
}
if (!maxOccursUsage)
context.endElement();
}
public String getMechanismType()
{
return Constants.AXIS_SAX;
}
public void addComponentTypeMapping(Class pomponentType, QName typeName)
{
componentTypeMap.put(pomponentType, typeName);
}
/**
* Return XML schema for the specified type, suitable for insertion into
* the <types> element of a WSDL document, or underneath an
* <element> or <attribute> declaration.
*
* @param javaType the Java Class we're writing out schema for
* @param types the Java2WSDL Types object which holds the context
* for the WSDL being generated.
* @return a type element containing a schema simpleType/complexType
* @see org.jboss.axis.wsdl.fromJava.Types
*/
public Element writeSchema(Class javaType, Types types) throws Exception
{
// If an array the component type should be processed first
String componentTypeName = null;
Class componentType = null;
if (javaType.isArray())
{
String dimString = "[]";
componentType = javaType.getComponentType();
if (componentType.isArray())
{
while (componentType.isArray())
{
dimString += "[]";
componentType = componentType.getComponentType();
}
}
else
{
types.writeType(componentType, null);
}
componentTypeName =
types.getQNameString(types.getTypeQName(componentType)) +
dimString;
}
// Use Types helper method to actually create the complexType
return types.createArrayElement(componentTypeName);
}
}
| ArraySerializer.java |