org.plasma.sdo.xml.StreamMarshaller Maven / Gradle / Ivy
/**
* PlasmaSDO™ License
*
* This is a community release of PlasmaSDO™, a dual-license
* Service Data Object (SDO) 2.1 implementation.
* This particular copy of the software is released under the
* version 2 of the GNU General Public License. PlasmaSDO™ was developed by
* TerraMeta Software, Inc.
*
* Copyright (c) 2013, TerraMeta Software, Inc. All rights reserved.
*
* General License information can be found below.
*
* This distribution may include materials developed by third
* parties. For license and attribution notices for these
* materials, please refer to the documentation that accompanies
* this distribution (see the "Licenses for Third-Party Components"
* appendix) or view the online documentation at
* nonContainmentObjects = new HashSet();
public EventVisitor(XMLStreamWriter writer) {
this.writer = writer;
}
public void start(PlasmaDataObject target, PlasmaDataObject source, String sourcePropertyName, int level){
try {
PlasmaType sourceType = null;
PlasmaProperty sourceProperty = null;
if (source != null) {
if (this.nonContainmentObjects.contains(source)) {
this.nonContainmentObjects.add(target); // so gets checked as source at next level, removed on end event
return; // no content needed for non containment obj
}
sourceType = (PlasmaType)source.getType();
sourceProperty = (PlasmaProperty)sourceType.getProperty(sourcePropertyName);
}
PlasmaType targetType = (PlasmaType)target.getType();
if (log.isDebugEnabled())
if (source == null)
log.debug("start: " + targetType.getName()
+ "("+((PlasmaNode)target).getUUIDAsString()+")");
else
log.debug("start: " + sourceType.getName()
+ "("+((PlasmaNode)source).getUUIDAsString()+ ")."
+ sourceProperty.getName() + "->"
+ targetType.getName() + "("+((PlasmaNode)target).getUUIDAsString()+")");
if (source != null) {
this.writer.writeStartElement(helper.getLocalName(sourceProperty));
}
else { // its the root
if (document.getRootElementName() == null) {
// no passed in root element name, write namespace
// stuff into start tag of data-graph root
this.writer.writeStartElement(namespacePrefix,
helper.getLocalName(targetType),
document.getRootElementURI());
writeRootAttributes(writer);
}
else {
this.writer.writeStartElement(
helper.getLocalName(targetType));
}
}
// root or containment reference
if (source == null || source.contains(target)) {
writeContent(this.writer, target, source,
sourceProperty, targetType, sourceType, level);
}
else {
// source node does not contain the target, yet the
// target may contain other nodes which we will subsequently
// get, Therefore check for source as non-containment obj above
this.nonContainmentObjects.add(target);
writeNonContainmentReferenceContent(this.writer, target, source,
sourceProperty, targetType, sourceType, level);
}
} catch (XMLStreamException e) {
throw new MarshallerRuntimeException(e);
} catch (IOException e) {
throw new MarshallerRuntimeException(e);
}
}
public void end(PlasmaDataObject target, PlasmaDataObject source, String sourcePropertyName, int level){
try {
if (source != null) {
if (this.nonContainmentObjects.contains(source)) {
this.nonContainmentObjects.remove(target); //
return; // no content needed for non containment obj
}
}
this.writer.writeEndElement();
} catch (XMLStreamException e) {
throw new MarshallerRuntimeException(e);
}
}
}
private void writeNonContainmentReferenceContent(XMLStreamWriter writer, DataObject dataObject, DataObject source,
Property sourceProperty,
PlasmaType targetType, PlasmaType sourceType,
int level) throws IOException, XMLStreamException {
// create XSI type for all non-containment refs
writer.writeAttribute("xsi",
XMLConstants.XMLSCHEMA_INSTANCE_NAMESPACE_URI, "type",
namespacePrefix + ":"
+ SchemaUtil.getNonContainmentReferenceName(targetType));
writer.writeAttribute(SchemaUtil.getSerializationAttributeName(),
((PlasmaDataObject)dataObject).getUUIDAsString());
}
private void writeContent(XMLStreamWriter writer, DataObject dataObject, DataObject source,
Property sourceProperty,
PlasmaType targetType, PlasmaType sourceType,
int level) throws IOException, XMLStreamException {
int externKeyCount = 0;
for (Property property : targetType.getProperties()) {
PlasmaProperty prop = (PlasmaProperty)property;
if (prop.isKey(KeyType.external)) {
externKeyCount++;
}
}
// create XSI type on demand for containment refs
// FIXME: SDO namespaces are necessary in some cases
// to determine exact XSI type to unmarshal. Can't determine
// this from the property type on unmarshalling.
if (externKeyCount > 0)
writer.writeAttribute("xsi",
XMLConstants.XMLSCHEMA_INSTANCE_NAMESPACE_URI, "type",
namespacePrefix + ":"
+ SchemaUtil.getContainmentReferenceName(targetType));
writer.writeAttribute(SchemaUtil.getSerializationAttributeName(),
((PlasmaDataObject)dataObject).getUUIDAsString());
for (Property property : targetType.getProperties()) {
PlasmaProperty prop = (PlasmaProperty)property;
if (!prop.getType().isDataType() || !prop.isXMLAttribute()) {
continue;
}
// FIXME - what about pri-keys which are not sequences
//VisibilityKind visibility = (VisibilityKind)prop.get(PlasmaProperty.INSTANCE_PROPERTY_OBJECT_VISIBILITY);
//if (visibility != null && visibility.ordinal() == VisibilityKind.private_.ordinal())
// continue; // for properties defined as private no XML or XML Schema property generated
Object value = dataObject.get(prop);
if (value == null)
continue;
writer.writeAttribute(helper.getLocalName(prop),
fromObject(prop.getType(), value));
}
// add element properties
List list = targetType.getProperties();
PlasmaProperty[] properties = new PlasmaProperty[list.size()];
list.toArray(properties);
Arrays.sort(properties, this.comparator);
for (Property property : properties) {
PlasmaProperty prop = (PlasmaProperty)property;
if (!prop.getType().isDataType() || prop.isXMLAttribute())
continue;
// FIXME - what about pri-keys which are not sequences
//VisibilityKind visibility = (VisibilityKind)prop.get(PlasmaProperty.INSTANCE_PROPERTY_OBJECT_VISIBILITY);
//if (visibility != null && visibility.ordinal() == VisibilityKind.private_.ordinal())
// continue; // for properties defined as private no XML or XML Schema property generated
Object value = dataObject.get(prop);
if (value == null)
continue;
writer.writeStartElement(helper.getLocalName(prop));
writer.writeCharacters(this.fromObject(prop.getType(), value));
writer.writeEndElement();
}
}
class PropertyComparator implements Comparator {
public int compare(PlasmaProperty p1, PlasmaProperty p2) {
if (p1.getSort() != null && p2.getSort() != null)
return p1.getSort().getKey().compareTo(p2.getSort().getKey());
else
return p1.getName().compareTo(p2.getName());
}
}
}
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