/// <summary> serialize a compact instance</summary>
//UPGRADE_TODO: Class 'java.io.DataOutputStream' was converted to 'System.IO.BinaryWriter' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javaioDataOutputStream'"
public virtual void writeExternal(System.IO.BinaryWriter out_Renamed)
{
if (instance == null)
{
throw new System.SystemException("instance has not yet been set via setData()");
}
ExtUtil.writeNumeric(out_Renamed, instance.FormId);
ExtUtil.writeNumeric(out_Renamed, instance.ID);
ExtUtil.write(out_Renamed, new ExtWrapNullable(instance.DateSaved));
writeTreeElement(out_Renamed, instance.getRoot());
}
/// <summary> deserialize a compact instance. note the retrieval of the template data instance</summary>
//UPGRADE_TODO: Class 'java.io.DataInputStream' was converted to 'System.IO.BinaryReader' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javaioDataInputStream'"
public virtual void readExternal(System.IO.BinaryReader in_Renamed, PrototypeFactory pf)
{
int formID = ExtUtil.readInt(in_Renamed);
instance = getTemplateInstance(formID).Clone();
instance.ID = ExtUtil.readInt(in_Renamed);
instance.DateSaved = (System.DateTime)ExtUtil.read(in_Renamed, new ExtWrapNullable(typeof(System.DateTime)));
//formID, name, schema, versions, and namespaces are all invariants of the template instance
TreeElement root = instance.getRoot();
readTreeElement(root, in_Renamed, pf);
}
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);
}
/*
* (non-Javadoc)
* @see org.javarosa.core.model.utils.ITreeVisitor#visit(org.javarosa.core.model.DataModelTree)
*/
public virtual 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();
}
for (int i = 0; i < root.NumChildren; i++)
{
TreeElement childAt = root.getChildAt(i);
}
if (root != null)
{
theXmlDoc.addChild(Node.ELEMENT, serializeNode(root));
}
Element top = theXmlDoc.getElement(0);
System.String[] prefixes = tree.NamespacePrefixes;
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);
}
}
public override XPathNodeset eval(FormInstance m, EvaluationContext ec)
{
TreeReference genericRef = getReference();
TreeReference ref_Renamed;
if (genericRef.Context == TreeReference.CONTEXT_ORIGINAL)
{
ref_Renamed = genericRef.contextualize(ec.OriginalContext);
}
else
{
ref_Renamed = genericRef.contextualize(ec.ContextRef);
}
//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_Renamed.InstanceName != null && ref_Renamed.Absolute)
{
FormInstance nonMain = ec.getInstance(ref_Renamed.InstanceName);
if (nonMain != null)
{
m = nonMain;
}
else
{
throw new XPathMissingInstanceException(ref_Renamed.InstanceName, "Instance referenced by " + ref_Renamed.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.MainInstance;
if (m == null)
{
System.String refStr = ref_Renamed == null?"":ref_Renamed.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_Renamed.InstanceName, "Instance referenced by " + ref_Renamed.toString(true) + " has not been loaded");
}
// this makes no sense...
// if (ref.isAbsolute() && m.getTemplatePath(ref) == null) {
// Vector<TreeReference> nodesetRefs = new Vector<TreeReference>();
// return new XPathNodeset(nodesetRefs, m, ec);
// }
//to fix conditions based on non-relevant data, filter the nodeset by relevancy
for (int i = 0; i < nodesetRefs.size(); i++)
{
if (!m.resolveReference((TreeReference)nodesetRefs.elementAt(i)).isRelevant())
{
nodesetRefs.removeElementAt(i);
i--;
}
}
return(new XPathNodeset(nodesetRefs, m, ec));
}
public static TreeReference topRef(FormInstance dm)
{
return(ref_Renamed("/" + dm.getRoot().getName()));
}