Java FormInstance.getRoot方法代码示例

import org.javarosa.core.model.instance.FormInstance; //导入方法依赖的package包/类
public void visit(FormInstance tree) {
	theXmlDoc = new Document();
	//TreeElement root = tree.getRoot();

	TreeElement root = tree.resolveReference(rootRef);

	//For some reason resolveReference won't ever return the root, so we'll
	//catch that case and just start at the root.
	if(root == null) {
		root = tree.getRoot();
	}

	if (root != null) {
		theXmlDoc.addChild(Node.ELEMENT, serializeNode(root));
	}

	Element top = theXmlDoc.getElement(0);

	String[] prefixes = tree.getNamespacePrefixes();
	for(int i = 0 ; i < prefixes.length; ++i ) {
		top.setPrefix(prefixes[i], tree.getNamespaceURI(prefixes[i]));
	}
	if (tree.schema != null) {
		top.setNamespace(tree.schema);
		top.setPrefix("", tree.schema);
	}
}
 

import org.javarosa.core.model.instance.FormInstance; //导入方法依赖的package包/类
public void visit(FormInstance tree) {
	nodeSet = new String();

	TreeElement root = tree.getRoot();
	// TreeElement root = tree.resolveReference(rootRef);

	instanceID = root.getAttributeValue("", "id");
	xmlns = root.getAttributeValue("", "xmlns");
	delimiter = root.getAttributeValue("", "delimiter");
	if ( delimiter == null ) {
		// for the spelling-impaired...
		delimiter = root.getAttributeValue("", "delimeter");
	}
	prefix = root.getAttributeValue("", "prefix");

	instanceID = (instanceID != null)? instanceID : "unknown";
	xmlns = (xmlns != null)? xmlns : " ";
	delimiter = (delimiter != null ) ? delimiter : "#";
	prefix = (prefix != null) ? prefix : "J1!"+instanceID+"!";

	//Don't bother adding any delimiters, yet. Delimiters are
	//added before tags/data
	theSmsStr = prefix;

	// serialize each node (and it's children) to get it's answers
	serializeTree(root);
	theSmsStr = theSmsStr.trim();
}
 

import org.javarosa.core.model.instance.FormInstance; //导入方法依赖的package包/类
public static void mergeDataModel (FormInstance parent, FormInstance child, TreeReference parentRef) {
	TreeElement parentNode = parent.resolveReference(parentRef);
	//ugly
	if (parentNode == null) {
		parentRef = parent.addNode(parentRef);
		parentNode = parent.resolveReference(parentRef);
	}
	TreeElement childNode = child.getRoot();

	int mult = parentNode.getChildMultiplicity(childNode.getName());
	childNode.setMult(mult);

	parentNode.addChild(childNode);
}
 

import org.javarosa.core.model.instance.FormInstance; //导入方法依赖的package包/类
public XPathNodeset eval (FormInstance m, EvaluationContext ec) {
		TreeReference genericRef = getReference();

		TreeReference ref;
		if(genericRef.getContext() == TreeReference.CONTEXT_ORIGINAL) {
			ref = genericRef.contextualize(ec.getOriginalContext());
		} else {
			ref = genericRef.contextualize(ec.getContextRef());
		}

		//We don't necessarily know the model we want to be working with until we've contextualized the
		//node

		//check if this nodeset refers to a non-main instance
		if(ref.getInstanceName() != null && ref.isAbsolute())
		{
			FormInstance nonMain = ec.getInstance(ref.getInstanceName());
			if(nonMain != null)
			{
				m = nonMain;
			}
			else
			{
				throw new XPathMissingInstanceException(ref.getInstanceName(), "Instance referenced by " + ref.toString(true) + " does not exist");
			}
		} else {
            //TODO: We should really stop passing 'm' around and start just getting the right instance from ec
            //at a more central level
            m = ec.getMainInstance();

            if(m == null) {
                    String refStr = ref == null ? "" : ref.toString(true);
    				throw new XPathException("Cannot evaluate the reference [" + refStr + "] in the current evaluation context. No default instance has been declared!");
            }
		}

		// regardless of the above, we want to ensure there is a definition
		if(m.getRoot() == null) {
			//This instance is _declared_, but doesn't actually have any data in it.
			throw new XPathMissingInstanceException(ref.getInstanceName(), "Instance referenced by " + ref.toString(true) + " has not been loaded");
		}

		// this makes no sense...
//		if (ref.isAbsolute() && m.getTemplatePath(ref) == null) {
//			List<TreeReference> nodesetRefs = new List<TreeReference>();
//			return new XPathNodeset(nodesetRefs, m, ec);
//		}

      List<TreeReference> nodesetRefs = ec.expandReference(ref);

		//to fix conditions based on non-relevant data, filter the nodeset by relevancy
		for (int i = 0; i < nodesetRefs.size(); i++) {
			if (!m.resolveReference(nodesetRefs.get(i)).isRelevant()) {
				nodesetRefs.remove(i);
				i--;
			}
		}

		return new XPathNodeset(nodesetRefs, m, ec);
	}