protected List<Object> readArray(XMLStreamReader parser) throws XMLStreamException {
if (XMLStreamConstants.START_ELEMENT != parser.getEventType()) {
throw new RuntimeException("must be start element, not: " + parser.getEventType());
}
if (!"arr".equals(parser.getLocalName().toLowerCase(Locale.ENGLISH))) {
throw new RuntimeException("must be 'arr', not: " + parser.getLocalName());
}
StringBuilder builder = new StringBuilder();
KnownType type = null;
List<Object> vals = new ArrayList<Object>();
int depth = 0;
while (true) {
switch (parser.next()) {
case XMLStreamConstants.START_ELEMENT:
depth++;
KnownType t = KnownType.get(parser.getLocalName());
if (t == null) {
throw new RuntimeException("this must be known type! not: " + parser.getLocalName());
}
if (type == null) {
type = t;
}
/**
* * actually, there is no rule that arrays need the same type else if( type != t && !(t
* == KnownType.NULL || type == KnownType.NULL)) { throw new RuntimeException( "arrays
* must have the same type! ("+type+"!="+t+") "+parser.getLocalName() ); } *
*/
type = t;
builder.setLength(0); // reset the text
if (!type.isLeaf) {
switch (type) {
case LST:
vals.add(readNamedList(parser));
depth--;
continue;
case ARR:
vals.add(readArray(parser));
depth--;
continue;
case RESULT:
vals.add(readDocuments(parser));
depth--;
continue;
case DOC:
vals.add(readDocument(parser));
depth--;
continue;
}
throw new XMLStreamException("branch element not handled!", parser.getLocation());
}
break;
case XMLStreamConstants.END_ELEMENT:
if (--depth < 0) {
return vals; // the last element is itself
}
// System.out.println( "ARR:"+type+"::"+builder );
Object val = type.read(builder.toString().trim());
if (val == null && type != KnownType.NULL) {
throw new XMLStreamException("error reading value:" + type, parser.getLocation());
}
vals.add(val);
break;
case XMLStreamConstants
.SPACE: // TODO? should this be trimmed? make sure it only gets one/two space?
case XMLStreamConstants.CDATA:
case XMLStreamConstants.CHARACTERS:
builder.append(parser.getText());
break;
}
}
}
protected SolrDocument readDocument(XMLStreamReader parser) throws XMLStreamException {
if (XMLStreamConstants.START_ELEMENT != parser.getEventType()) {
throw new RuntimeException("must be start element, not: " + parser.getEventType());
}
if (!"doc".equals(parser.getLocalName().toLowerCase(Locale.ENGLISH))) {
throw new RuntimeException("must be 'lst', not: " + parser.getLocalName());
}
SolrDocument doc = new SolrDocument();
StringBuilder builder = new StringBuilder();
KnownType type = null;
String name = null;
// just eat up the events...
int depth = 0;
while (true) {
switch (parser.next()) {
case XMLStreamConstants.START_ELEMENT:
depth++;
builder.setLength(0); // reset the text
type = KnownType.get(parser.getLocalName());
if (type == null) {
throw new RuntimeException("this must be known type! not: " + parser.getLocalName());
}
name = null;
int cnt = parser.getAttributeCount();
for (int i = 0; i < cnt; i++) {
if ("name".equals(parser.getAttributeLocalName(i))) {
name = parser.getAttributeValue(i);
break;
}
}
if (name == null) {
throw new XMLStreamException(
"requires 'name' attribute: " + parser.getLocalName(), parser.getLocation());
}
// Handle multi-valued fields
if (type == KnownType.ARR) {
for (Object val : readArray(parser)) {
doc.addField(name, val);
}
depth--; // the array reading clears out the 'endElement'
} else if (!type.isLeaf) {
throw new XMLStreamException("must be value or array", parser.getLocation());
}
break;
case XMLStreamConstants.END_ELEMENT:
if (--depth < 0) {
return doc;
}
// System.out.println( "FIELD:"+type+"::"+name+"::"+builder );
Object val = type.read(builder.toString().trim());
if (val == null) {
throw new XMLStreamException("error reading value:" + type, parser.getLocation());
}
doc.addField(name, val);
break;
case XMLStreamConstants
.SPACE: // TODO? should this be trimmed? make sure it only gets one/two space?
case XMLStreamConstants.CDATA:
case XMLStreamConstants.CHARACTERS:
builder.append(parser.getText());
break;
}
}
}
protected NamedList<Object> readNamedList(XMLStreamReader parser) throws XMLStreamException {
if (XMLStreamConstants.START_ELEMENT != parser.getEventType()) {
throw new RuntimeException("must be start element, not: " + parser.getEventType());
}
StringBuilder builder = new StringBuilder();
NamedList<Object> nl = new SimpleOrderedMap<Object>();
KnownType type = null;
String name = null;
// just eat up the events...
int depth = 0;
while (true) {
switch (parser.next()) {
case XMLStreamConstants.START_ELEMENT:
depth++;
builder.setLength(0); // reset the text
type = KnownType.get(parser.getLocalName());
if (type == null) {
throw new RuntimeException("this must be known type! not: " + parser.getLocalName());
}
name = null;
int cnt = parser.getAttributeCount();
for (int i = 0; i < cnt; i++) {
if ("name".equals(parser.getAttributeLocalName(i))) {
name = parser.getAttributeValue(i);
break;
}
}
/**
* The name in a NamedList can actually be null if( name == null ) { throw new
* XMLStreamException( "requires 'name' attribute: "+parser.getLocalName(),
* parser.getLocation() ); }
*/
if (!type.isLeaf) {
switch (type) {
case LST:
nl.add(name, readNamedList(parser));
depth--;
continue;
case ARR:
nl.add(name, readArray(parser));
depth--;
continue;
case RESULT:
nl.add(name, readDocuments(parser));
depth--;
continue;
case DOC:
nl.add(name, readDocument(parser));
depth--;
continue;
}
throw new XMLStreamException("branch element not handled!", parser.getLocation());
}
break;
case XMLStreamConstants.END_ELEMENT:
if (--depth < 0) {
return nl;
}
// System.out.println( "NL:ELEM:"+type+"::"+name+"::"+builder );
nl.add(name, type.read(builder.toString().trim()));
break;
case XMLStreamConstants
.SPACE: // TODO? should this be trimmed? make sure it only gets one/two space?
case XMLStreamConstants.CDATA:
case XMLStreamConstants.CHARACTERS:
builder.append(parser.getText());
break;
}
}
}