public void startElement(String name, AttributeList atts)
throws org.xml.sax.SAXException
{
//-- strip namespace prefix
int idx = name.indexOf(':');
if (idx >= 0) {
name = name.substring(idx+1);
}
StateInfo sInfo = null;
boolean topLevel = false;
//-- if we are currently in another element
//-- definition...flag as complex content
if (!_siStack.isEmpty()) {
sInfo = (StateInfo)_siStack.peek();
sInfo.complex = true;
}
else {
topLevel = true;
}
//-- create current holder for stateInformation
sInfo = new StateInfo();
sInfo.topLevel = topLevel;
_siStack.push(sInfo);
//-- create element definition
sInfo.element = new ElementDecl(_schema, name);
//-- create attributes
for (int i = 0; i < atts.getLength(); i++) {
String attName = atts.getName(i);
//-- skip namespace declarations
if (attName.equals(XMLNS)) continue;
String prefix = "";
idx = attName.indexOf(':');
if (idx >= 0) {
prefix = attName.substring(0, idx);
attName = attName.substring(idx+1);
}
if (prefix.equals(XMLNS)) continue;
AttributeDecl attr = new AttributeDecl(_schema, attName);
//-- guess simple type
String typeName = _nsPrefix + ':' +
DatatypeHandler.guessType(atts.getValue(i));
attr.setSimpleTypeReference(typeName);
sInfo.attributes.addElement(attr);
}
} //-- startElement
/**
* Merges the two element declarations. The resulting
* merge is placed in ElementDecl e1.
*
* @param e1 the main ElementDecl
* @param e2 the secondary ElementDecl to merge with e1
**/
private void merge(ElementDecl e1, ElementDecl e2)
throws SchemaException
{
XMLType e1Type = e1.getType();
XMLType e2Type = e2.getType();
//-- Make sure types are not null and if so create them
if (e1Type == null) {
if (e2Type == null) return; //-- nothing to merge
else {
if (e2Type.isSimpleType()) {
e1.setType(e2Type);
}
else {
ComplexType cType = new ComplexType(_schema);
Group group = new Group();
group.setOrder(_defaultGroupOrder);
cType.addGroup(group);
e1.setType(cType);
e1Type = cType;
}
}
}
else if (e2Type == null) {
if (e1Type.isSimpleType()) {
e2.setType(e1Type);
}
else {
ComplexType cType = new ComplexType(_schema);
Group group = new Group();
group.setOrder(_defaultGroupOrder);
cType.addGroup(group);
e2.setType(cType);
e2Type = cType;
}
}
//-- both simple types
if (e1Type.isSimpleType() && e2Type.isSimpleType()) {
if (!e1Type.getName().equals(e2Type.getName())) {
String typeName = _nsPrefix + ':' +
DatatypeHandler.whichType(e1Type.getName(),
e2Type.getName());
e1.setType(null);
e1.setTypeReference(typeName);
}
return;
}
//-- e1 is simple, e2 is complex
else if (e1Type.isSimpleType()) {
ComplexType cType = new ComplexType(_schema);
e1.setType(cType);
Group group = new Group();
group.setOrder(_defaultGroupOrder);
cType.addGroup(group);
cType.setContentType(ContentType.mixed);
e1Type = cType;
//-- do not return here...we need to now treat as both
//-- were complex
}
//-- e2 is simple, e1 is complex
else if (e2Type.isSimpleType()) {
ComplexType cType = new ComplexType(_schema);
e2.setType(cType);
Group group = new Group();
group.setOrder(_defaultGroupOrder);
cType.addGroup(group);
cType.setContentType(ContentType.mixed);
e2Type = cType;
//-- do not return here...we need to now treat as both
//-- were complex
}
//-- both complex types
ComplexType cType1 = (ComplexType)e1Type;
ComplexType cType2 = (ComplexType)e2Type;
//-- loop through all element/attribute declarations
//-- of e2 and add them to e1 if they do not already exist
//-- and mark them as optional
Group e1Group = (Group) cType1.getParticle(0);
if (e1Group == null) {
e1Group = new Group();
e1Group.setOrder(_defaultGroupOrder);
cType1.addGroup(e1Group);
}
Group e2Group = (Group) cType2.getParticle(0);
if (e2Group == null) {
e2Group = new Group();
e2Group.setOrder(_defaultGroupOrder);
cType2.addGroup(e2Group);
}
Enumeration enum = e2Group.enumerate();
while (enum.hasMoreElements()) {
Particle particle = (Particle)enum.nextElement();
if (particle.getStructureType() == Structure.ELEMENT) {
ElementDecl element = (ElementDecl)particle;
ElementDecl main = e1Group.getElementDecl(element.getName());
if (main == null) {
e1Group.addElementDecl(element);
element.setMinOccurs(0);
}
else {
merge(main, element);
}
}
}
//-- add all attributes from type2
enum = cType2.getAttributeDecls();
while (enum.hasMoreElements()) {
//-- check for attribute with same name
AttributeDecl attNew = (AttributeDecl)enum.nextElement();
String attName = attNew.getName();
AttributeDecl attPrev = cType1.getAttributeDecl(attName);
if (attPrev == null) {
attNew.setUse(AttributeDecl.USE_OPTIONAL);
cType1.addAttributeDecl(attNew);
}
else {
String type1 = attPrev.getSimpleType().getName();
String type2 = attNew.getSimpleType().getName();
if (!type1.equals(type2)) {
String typeName = _nsPrefix + ':' +
DatatypeHandler.whichType(type1, type2);
attPrev.setSimpleTypeReference(typeName); }
}
}
//-- loop through all element/attribute declarations
//-- of e1 and if they do not exist in e2, simply
//-- mark them as optional
enum = e1Group.enumerate();
while (enum.hasMoreElements()) {
Particle particle = (Particle)enum.nextElement();
if (particle.getStructureType() == Structure.ELEMENT) {
ElementDecl element = (ElementDecl)particle;
if (e2Group.getElementDecl(element.getName()) == null) {
element.setMinOccurs(0);
}
}
}
} //-- merge
public void endElement(String name)
throws org.xml.sax.SAXException
{
//-- strip namespace prefix
int idx = name.indexOf(':');
if (idx >= 0) {
name = name.substring(idx+1);
}
StateInfo sInfo = (StateInfo) _siStack.pop();
//-- if we don't have a type, it means there are no
//-- children and therefore the type is a simpleType or
//-- simpleContent
if ((sInfo.element.getType() == null) && (sInfo.buffer != null)) {
//-- create SimpleType (guess type)
String typeName = _nsPrefix + ':' +
DatatypeHandler.guessType(sInfo.buffer.toString());
sInfo.element.setTypeReference(typeName);
//-- simpleContent
if (sInfo.attributes.size() > 0) {
ComplexType cType = new ComplexType(_schema);
//-- SHOULD CHANGE THIS TO SIMPLE CONTENT WHEN
//-- SCHEMA WRITER BUGS ARE FIXED
cType.setContentType(ContentType.mixed);
sInfo.element.setType(cType);
Group group = new Group();
group.setOrder(_defaultGroupOrder);
//-- add attributes
try {
cType.addGroup(group);
for (int i = 0; i < sInfo.attributes.size(); i++) {
AttributeDecl attDecl =
(AttributeDecl)sInfo.attributes.elementAt(i);
cType.addAttributeDecl(attDecl);
}
}
catch(SchemaException sx) {
throw new SAXException(sx);
}
}
}
else {
ComplexType cType = (ComplexType)sInfo.element.getType();
if (cType != null) {
//-- add attributes
try {
for (int i = 0; i < sInfo.attributes.size(); i++) {
AttributeDecl attDecl =
(AttributeDecl)sInfo.attributes.elementAt(i);
cType.addAttributeDecl(attDecl);
}
}
catch(SchemaException sx) {
throw new SAXException(sx);
}
}
}
//-- put element into parent element or as top-level in schema
if (!_siStack.isEmpty()) {
StateInfo parentInfo = (StateInfo)_siStack.peek();
ComplexType type = (ComplexType) parentInfo.element.getType();
Group group = null;
if (type == null) {
parentInfo.complex = true;
type = new ComplexType(_schema);
parentInfo.element.setType(type);
group = new Group();
group.setOrder(_defaultGroupOrder);
try {
type.addGroup(group);
//-- add element
group.addElementDecl(sInfo.element);
}
catch(SchemaException sx) {
throw new SAXException(sx);
}
}
else {
group = (Group) type.getParticle(0);
//-- check for another element declaration with
//-- same name ...
ElementDecl element = group.getElementDecl(name);
boolean checkGroupType = false;
if (element != null) {
//-- if complex...merge definition
if (sInfo.complex) {
try {
merge(element, sInfo.element);
}
catch(SchemaException sx) {
throw new SAXException(sx);
}
}
element.setMaxOccurs(Particle.UNBOUNDED);
checkGroupType = true;
}
else {
try {
group.addElementDecl(sInfo.element);
}
catch(SchemaException sx) {
throw new SAXException(sx);
}
}
//-- change group type if necessary
if (checkGroupType && (group.getOrder() == Order.seq)) {
//-- make sure element is last item in group,
//-- otherwise we need to switch to all
boolean found = false;
boolean changeType = false;
for (int i = 0; i < group.getParticleCount(); i++) {
if (found) {
changeType = true;
break;
}
if (element == group.getParticle(i)) found = true;
}
if (changeType) {
group.setOrder(Order.all);
}
}
}
}
else {
try {
_schema.addElementDecl(sInfo.element);
//-- make complexType top-level also
//XMLType type = sInfo.element.getType();
//if ((type != null) && (type.isComplexType())) {
// if (type.getName() == null) {
// type.setName(sInfo.element.getName() + "Type");
// _schema.addComplexType((ComplexType)type);
// }
//}
}
catch(SchemaException sx) {
throw new SAXException(sx);
}
}
} //-- endElement