/**
* This will invoke the <code>startElement</code> callback in the <code>ContentHandler</code>.
*
* @param element <code>Element</code> used in callbacks.
* @param nsAtts <code>List</code> of namespaces to declare with the element or <code>null</code>.
*/
private void startElement(Element element, Attributes nsAtts) throws JDOMException {
String namespaceURI = element.getNamespaceURI();
String localName = element.getName();
String rawName = element.getQualifiedName();
// Allocate attribute list.
AttributesImpl atts = (nsAtts != null) ? new AttributesImpl(nsAtts) : new AttributesImpl();
List attributes = element.getAttributes();
Iterator i = attributes.iterator();
while (i.hasNext()) {
Attribute a = (Attribute) i.next();
atts.addAttribute(
a.getNamespaceURI(),
a.getName(),
a.getQualifiedName(),
getAttributeTypeName(a.getAttributeType()),
a.getValue());
}
try {
contentHandler.startElement(namespaceURI, localName, rawName, atts);
} catch (SAXException se) {
throw new JDOMException("Exception in startElement", se);
}
}
public void addMessage(SAXParseException exception, String typeOfError) {
if (errorCount == 0) xpaths = new Element("xsderrors", ns);
errorCount++;
Element elem = (Element) so.getLocator().getNode();
Element x = new Element("xpath", ns);
try {
String xpath = jeeves.utils.XPath.getXPath(elem);
// -- remove the first element to ensure XPath fits XML passed with
// -- root element
if (xpath.startsWith("/")) {
int ind = xpath.indexOf('/', 1);
if (ind != -1) {
xpath = xpath.substring(ind + 1);
} else {
xpath = "."; // error to be placed on the root element
}
}
x.setText(xpath);
} catch (JDOMException e) {
e.printStackTrace();
x.setText("nopath");
}
String message = exception.getMessage() + " (Element: " + elem.getQualifiedName();
String parentName;
if (!elem.isRootElement()) {
Element parent = (Element) elem.getParent();
if (parent != null) parentName = parent.getQualifiedName();
else parentName = "Unknown";
} else {
parentName = "/";
}
message += " with parent element: " + parentName + ")";
Element m = new Element("message", ns).setText(message);
Element errorType = new Element("typeOfError", ns).setText(typeOfError);
Element errorNumber = new Element("errorNumber", ns).setText(String.valueOf(errorCount));
Element e = new Element("error", ns);
e.addContent(errorType);
e.addContent(errorNumber);
e.addContent(m);
e.addContent(x);
xpaths.addContent(e);
}
/**
* This will invoke the <code>endElement</code> callback in the <code>ContentHandler</code>.
*
* @param element <code>Element</code> used in callbacks.
*/
private void endElement(Element element) throws JDOMException {
String namespaceURI = element.getNamespaceURI();
String localName = element.getName();
String rawName = element.getQualifiedName();
try {
contentHandler.endElement(namespaceURI, localName, rawName);
} catch (SAXException se) {
throw new JDOMException("Exception in endElement", se);
}
}
/**
* Displays information about all nodes in a result set.
*
* @param nodelist the result list of an XPath expression evaluation
*/
public static void display_node_list(List nodelist) {
int size = nodelist.size();
for (Object obj : nodelist) {
String value = null;
if (obj instanceof Element) {
Element elem = (Element) obj;
String details =
String.format(
"%d children, %d attrs", elem.getChildren().size(), elem.getAttributes().size());
value = String.format("%s (%s)", elem.getQualifiedName(), details);
} else if (obj instanceof Attribute) {
Attribute attr = (Attribute) obj;
value = String.format("@%s=\'%s\'", attr.getQualifiedName(), attr.getValue());
} else if (obj instanceof Text) {
Text text = (Text) obj;
value = String.format("\"%s\"", text.getText());
} else if (obj instanceof String) {
String s = (String) obj;
value = String.format("\"%s\"", s);
} else if (obj instanceof Boolean) {
Boolean b = (Boolean) obj;
value = String.format("%s", b.toString());
} else if (obj instanceof Double) {
Double d = (Double) obj;
value = String.format("%s", d.toString());
} else {
value = "Unsupported dynamic type";
} // if-else
System.out.printf(" (%s) %s\n", obj.getClass().getName(), value);
} // for
System.out.printf("Result: %d nodes\n", size);
} // display_node_list()
public Z3950ServerResults harvest() throws Exception {
Set<String> newUuids = new HashSet<String>();
int groupSize = 10;
log.info("Retrieving remote metadata information:" + params.uuid);
Z3950ServerResults serverResults = new Z3950ServerResults();
// --- Clean all before harvest : Remove/Add mechanism
localUuids = new UUIDMapper(dbms, params.uuid);
// --- remove old metadata
for (String uuid : localUuids.getUUIDs()) {
String id = localUuids.getID(uuid);
if (log.isDebugEnabled()) log.debug(" - Removing old metadata before update with id: " + id);
dataMan.deleteMetadataGroup(context, dbms, id);
serverResults.locallyRemoved++;
}
if (serverResults.locallyRemoved > 0) dbms.commit();
// --- Search remote node
MetaSearcher s = searchMan.newSearcher(SearchManager.Z3950, Geonet.File.SEARCH_Z3950_CLIENT);
ServiceConfig config = new ServiceConfig();
Element request = new Element("request");
// --- Z39.50 servers from harvest params
for (String id : params.getRepositories()) {
request.addContent(new Element(Geonet.SearchResult.SERVERS).setText(id));
}
// --- Z39.50 query from harvest params
request.addContent(new Element(Geonet.SearchResult.ZQUERY).setText(params.query));
// --- don't get html presentations (get them later)
request.addContent(new Element(Geonet.SearchResult.SERVERHTML).setText("off"));
// --- set timeout to be 100 seconds
request.addContent(new Element(Geonet.SearchResult.TIMEOUT).setText("100"));
// --- set hitsPerPage
request.addContent(new Element(Geonet.SearchResult.HITS_PER_PAGE).setText(groupSize + ""));
// --- do the search
s.search(context, request, config);
if (s.getSize() == 0) {
log.error("Search failed or returned 0 results, trying again");
s.search(context, request, config);
if (s.getSize() == 0) {
throw new Exception("Bad luck, Search failed or returned 0 results");
}
}
if (log.isDebugEnabled()) log.debug("Search returned " + s.getSize() + " hits");
// -- process the hits in groups of groupSize
int numberOfHits = Math.min(Integer.parseInt(params.maximumHits), s.getSize());
// -- add from and to placeholders to request
request.addContent(new Element("from"));
request.addContent(new Element("to"));
Element categories = Lib.local.retrieve(dbms, "Categories");
if (log.isDebugEnabled()) log.debug("categories " + Xml.getString(categories));
Element repositories = new Info().getZRepositories(context, settingMan);
if (log.isDebugEnabled()) log.debug("repos " + Xml.getString(repositories));
// -- build a map of collection code versus repository name for
// -- assigning the categories
Map<String, String> codes = new HashMap<String, String>();
Map<String, String> catCodes = new HashMap<String, String>();
// -- add new category for each repository
boolean addcateg = false;
for (String repo : params.getRepositories()) {
Element repoElem = Xml.selectElement(repositories, "record[id='" + repo + "']");
if (repoElem != null) {
Element repoId = repoElem.getChild("id");
String repoName = repoElem.getChildText("name");
codes.put(
repoId.getAttributeValue("serverCode") + ":" + repoId.getAttributeValue("code"),
repoName);
// create a result holder for this repository
serverResults.getServerResult(repoName);
// sanitize the name of the category
String categName = repoName.replaceAll("[^\\w]", "");
categName = categName.toLowerCase();
catCodes.put(
repoId.getAttributeValue("serverCode") + ":" + repoId.getAttributeValue("code"),
categName);
if (Xml.selectElement(categories, "record[name='" + categName + "']") == null) {
int newId = context.getSerialFactory().getSerial(dbms, "Categories");
dbms.execute("INSERT INTO Categories(id, name) VALUES (?, ?)", newId, categName);
Lib.local.insert(dbms, "Categories", newId, repoName);
addcateg = true;
}
}
}
if (addcateg) dbms.commit();
// --- return only maximum hits as directed by the harvest params
int nrGroups = (numberOfHits / groupSize) + 1;
for (int i = 1; i <= nrGroups; i++) {
int lower = ((i - 1) * groupSize) + 1;
int upper = Math.min((i * groupSize), numberOfHits);
request.getChild("from").setText("" + lower);
request.getChild("to").setText("" + upper);
// --- Loading results
List<Document> list = s.presentDocuments(context, request, config);
// --- Loading categories and groups
localCateg = new CategoryMapper(dbms);
localGroups = new GroupMapper(dbms);
if (log.isDebugEnabled())
log.debug(
"There are "
+ (list.size() - 1)
+ " children in the results ("
+ lower
+ " to "
+ upper
+ ")");
boolean transformIt = false;
String thisXslt = context.getAppPath() + Geonet.Path.IMPORT_STYLESHEETS + "/";
if (!params.importXslt.equals("none")) {
thisXslt = thisXslt + params.importXslt;
transformIt = true;
}
// --- For each record....
for (Document doc : list) {
Element md = doc.getRootElement();
String eName = md.getQualifiedName();
if (eName.equals("summary")) continue;
// -- Remove existing geonet:info children as for example
// -- GeoNetwork Z39.50 server return when full mode
// -- an extra element with server info not needed
// -- once harvested
String colCode = "";
Element info = md.getChild(Edit.RootChild.INFO, Edit.NAMESPACE);
if (info != null) {
String serverCode = info.getChildText("server");
int colPos = serverCode.indexOf(':');
if (colPos != -1) {
colCode = serverCode.substring(0, colPos) + ":" + info.getChildText("collection");
}
}
md.removeChildren(Edit.RootChild.INFO, Edit.NAMESPACE);
String repoName = codes.get(colCode);
if (log.isDebugEnabled()) log.debug("Processing record from server " + repoName);
HarvestResult result = serverResults.getServerResult(repoName);
result.totalMetadata++;
if (eName.equals("error")) {
log.error("JZKit could not retrieve record - returned " + Xml.getString(md));
result.unretrievable++;
continue;
}
// transform using importxslt if not none
if (transformIt) {
try {
if (log.isDebugEnabled()) log.debug("Before transform: " + Xml.getString(md));
md = Xml.transform(md, thisXslt);
if (log.isDebugEnabled()) log.debug("After transform: " + Xml.getString(md));
} catch (Exception e) {
System.out.println("Cannot transform XML, ignoring. Error was: " + e.getMessage());
result.badFormat++;
continue; // skip this one
}
}
// detect schema, extract uuid and add
String schema = dataMan.autodetectSchema(md, null);
if (schema == null) {
log.warning("Skipping metadata with unknown schema.");
result.unknownSchema++;
continue;
}
String uuid = null;
try {
uuid = dataMan.extractUUID(schema, md);
} catch (Exception e) {
log.error("Unable to extract UUID: " + e.getMessage());
e.printStackTrace();
}
if (uuid == null || uuid.equals("")) {
log.warning("Skipping metadata due to failure extracting uuid (uuid null or empty).");
result.unretrievable++;
continue;
}
log.info(" - Adding metadata with " + uuid);
// --- generate a new metadata id
int id = context.getSerialFactory().getSerial(dbms, "Metadata");
// TODO end confusion about datatypes
String id$ = Integer.toString(id);
String docType = "";
if (!transformIt && (doc.getDocType() != null)) {
docType = Xml.getString(doc.getDocType());
}
// --- check for duplicate uuid - violates constraints on metadata table
// --- if we attempt insert
boolean alreadyAdded = !newUuids.add(uuid);
boolean alreadyInDb = (dataMan.getMetadataId(dbms, uuid) != null);
if (alreadyAdded || alreadyInDb) {
log.error("Uuid " + uuid + " already exists in this set/database - cannot insert");
result.couldNotInsert++;
continue;
}
//
// insert metadata
//
try {
String groupOwner = "1", isTemplate = "n", title = null;
int owner = 1;
String category = null, createDate = new ISODate().toString(), changeDate = createDate;
boolean ufo = false, indexImmediate = false;
dataMan.insertMetadata(
context,
dbms,
schema,
md,
id,
uuid,
owner,
groupOwner,
params.uuid,
isTemplate,
docType,
title,
category,
createDate,
changeDate,
ufo,
indexImmediate);
} catch (Exception e) {
log.error("Unable to insert metadata " + e.getMessage());
e.printStackTrace();
result.couldNotInsert++;
continue;
}
addPrivileges(id$, params.getPrivileges(), localGroups, dataMan, context, dbms, log);
addCategories(
id$,
params.getCategories(),
localCateg,
dataMan,
dbms,
context,
log,
catCodes.get(colCode));
dataMan.setTemplateExt(dbms, id, "n", null);
dataMan.setHarvestedExt(dbms, id, params.uuid, params.name);
// validate it here if requested
if (params.validate) {
Document docVal;
if (!transformIt && (doc.getDocType() != null)) {
docVal = new Document(md, (DocType) doc.getDocType().detach());
} else {
docVal = new Document(md);
}
if (!dataMan.doValidate(dbms, schema, id$, docVal, context.getLanguage())) {
result.doesNotValidate++;
}
}
dataMan.indexMetadata(dbms, id$);
result.addedMetadata++;
}
}
dbms.commit();
return serverResults;
}
/**
* This method is used to recursively create a java object based on the provided element.
* Available elements : list, item, map, string and data. To create simple object see the
* convertSimpleObject method.
*
* @param element the element to convert.
* @return the created POJO, null if the element does not fit.
*/
private void appendObject(Map<String, Object> container, Element element) {
final String name = element.getQualifiedName();
final List<Attribute> attributes = element.getAttributes();
final List<Element> childElements = element.getChildren();
/*
* The simplest tag containing only a text value !
*/
if ((childElements.size() == 0) && (attributes.size() == 0)) {
container.put(name, element.getTextNormalize());
return;
}
/*
* Element is composed of attributes and child elements that we put in a map
*/
final Map<String, Object> objectMap = new HashMap<String, Object>();
// add attributes, using the predefined prefix to avoid collisions with
// elements names
for (final Attribute attr : attributes) {
objectMap.put(this.mAttrPrefix + attr.getQualifiedName(), attr.getValue());
}
// add child elements under their names (recursive call)
for (final Element elt : childElements) {
appendObject(objectMap, elt);
}
// add all the text content concatenated in one
final String textContent = element.getTextNormalize();
if (textContent.length() > 0) {
objectMap.put(this.mTextAttrName, textContent);
}
/*
* now its time to add our object in the parent container but.. are we
* the only one with the given name ?
*/
if (container.containsKey(name)) {
// we are not alone !
final Object existingMappedElement = container.get(name);
List<Object> fraternity;
if (existingMappedElement instanceof List) {
// the fraternity is allready organized
fraternity = (List) existingMappedElement;
fraternity.add(objectMap);
} else {
// we have one self-ignoring brother
// > create the fraternity
fraternity = new ArrayList<Object>();
fraternity.add(existingMappedElement);
fraternity.add(objectMap);
}
container.put(name, fraternity);
} else {
// we are truly unique.. (until now)
container.put(name, objectMap);
}
}
/**
* Constructor for switch Block
*
* <p>
*
* @param applyElement Reference to <code>org.jdom.Element</code> containing "apply" element
* @param m The parent <code>Model</code>
*/
@SuppressWarnings("unchecked")
public BlockMathSwitch(Element applyElement, Model m) {
// Initialize superblock elements
super("pending", "switch", m);
// Parse parts of the Apply element
Namespace mathml = Namespace.getNamespace("", "http://www.w3.org/1998/Math/MathML");
Element piecewise = applyElement.getChild("piecewise", mathml);
// second chance if not qualified
if (piecewise == null) {
piecewise = applyElement.getChild("piecewise");
}
// take appropriate action based on type
if (piecewise == null) {
List<Element> elist = applyElement.getChildren();
Iterator<Element> elisti = elist.iterator();
Element el = elisti.next();
System.err.println(
"Error - BlockMathSwitch constructor called with"
+ " wrong type element. Expected <piecewise>, found <"
+ el.getQualifiedName()
+ ">.");
} else {
// set name of ourself - will be "uniquified" later
this.setName("switch" + "_" + m.getNumBlocks());
// look for two children: <piece> and <otherwise>
List<Element> kids = piecewise.getChildren();
if (kids.size() < 2) {
System.err.println(
"Error - expected at least two child elements (one <piece> and one <otherwise> element); found only "
+ kids.size()
+ " elements total.");
} else {
// Get the children that describe switch
List<Element> pieces = piecewise.getChildren("piece", mathml);
Element otherwise = piecewise.getChild("otherwise", mathml);
// check they are not null
if (pieces.isEmpty()) {
pieces = piecewise.getChildren("piece"); // 2nd chance
}
if (pieces.isEmpty()) {
System.err.println("Error - <piecewise> element contained no <piece> elements");
return;
}
if (otherwise == null) {
otherwise = piecewise.getChild("otherwise"); // 2nd chance
}
if (otherwise == null) {
System.err.println("Error - <piecewise> element contained no <otherwise> element");
return;
}
// look at first piece
Element piece = pieces.get(0);
List<Element> pieceChildren = piece.getChildren();
if (pieceChildren.size() != 2) {
System.err.println(
"Error - <piece> element can only have two children - found "
+ pieces.size()
+ " instead.");
return;
}
List<Element> other = otherwise.getChildren();
if (other.size() != 1) {
System.err.println(
"Error - <otherwise> element needs one child - found " + other.size() + " instead.");
return;
}
// process like: this.genInputsFromApply(ikid);
// piece has two children: output 1 and condition it is used, and
// otherwise has default condition.
// Input 1 is passed if condition is true
this.genInputsFromApply(pieceChildren.iterator(), 1); // input 1 & condition (input 2)
if (pieces.size() <= 1) {
// if last piece, then input 3 is the <otherwise> child
this.genInputsFromApply(other.iterator(), 3); // input 3 (otherwise)
} else {
// if not, then recurse after removing the first <piece> element
boolean childRemoved = this.removeFirstPiece(piecewise);
if (!childRemoved)
throw new AssertionError(
"Unable to remove first child from <piecewise> "
+ "while trying to build an upstream switch for "
+ this.getName());
BlockMathSwitch bms = new BlockMathSwitch(applyElement, m);
this.addInput(bms, 3);
}
}
}
// System.out.println(" BlockMathSwitch constructor: " + myName + " created.");
}
