/**
* Copyright © 2008-2012 NetAllied Systems GmbH, Ravensburg, Germany.
*
* Licensed under the MIT Open Source License,
* for details please see LICENSE file or the website
* http://www.opensource.org/licenses/mit-license.php
*/
package de.netallied.xsd2cppsax;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.xerces.xs.XSElementDeclaration;
/**
* Traverses XSD Tree and finds out which element is used under which parent
* elements.
*
*/
public class ElementUsageCollector extends AbstractStackBasedTraverser {
/** Collected element usage data. Key: XSD element name. */
private Map<String, ElementUsage> completeElementUsage = new HashMap<String, ElementUsage>();
/**
* Constructor.
*/
public ElementUsageCollector(Config config) {
super(config);
}
/**
* @note: this consumes too much memory for COLLADA 1.5 -> only parent is
* returned.
* @return List containing current stack elements in reverse order.
*/
protected List<XSElementDeclaration> buildCurrentAncestorList() {
List<XSElementDeclaration> list = new ArrayList<XSElementDeclaration>();
// this consumes too much memory for COLLADA 1.5
for (int i = getElementStack().size() - 1; i >= 0; i--) {
XSElementDeclaration elemDecl = getElementStack().get(i);
list.add(elemDecl);
}
// if (getElementStack().size() >= 1)
// list.add(getElementStack().get(getElementStack().size() - 1));
return list;
}
/**
* @return Collected element usage data.
*/
public Map<String, ElementUsage> getCompleteElementUsage() {
return completeElementUsage;
}
/**
* {@inheritDoc}
*
* @see de.netallied.xsd2cppsax.AbstractXSTraverser#handleElement(com.sun.org.apache.xerces.internal.xs.XSElementDeclaration)
*/
@Override
public boolean handleElement(XSElementDeclaration element) {
if (!checkStack(element)) {
return true;
}
String elemName = element.getName();
if (!completeElementUsage.containsKey(elemName)) {
ElementUsage usage = new ElementUsage(elemName);
completeElementUsage.put(elemName, usage);
}
ElementUsage usage = completeElementUsage.get(elemName);
if (!getElementStack().isEmpty()) {
String parentName = getElementStack().peek().getName();
usage.addElementByParent(parentName, element);
}
usage.addElement(element);
List<List<XSElementDeclaration>> ancestors = usage.getAncestors();
ancestors.add(buildCurrentAncestorList());
getElementStack().push(element);
super.handleElement(element);
getElementStack().pop();
return true;
}
}