public static QueryMetadataContext buildQueryMetadataContext(
final EObject eObject, final boolean restrictSearch) {
Collection resources = null;
Container container = null;
try {
// assume model container...modler metadata is for workspace
container = ModelerCore.getModelContainer();
ModelWorkspace workspace = ModelerCore.getModelWorkspace();
if (workspace.isOpen()) {
resources = Arrays.asList(workspace.getEmfResources());
} else {
resources = container.getResources();
}
} catch (CoreException e) {
TransformationPlugin.Util.log(e);
}
// find the resoucre for the eObject in the container
Resource resource = ModelerCore.getModelEditor().findResource(container, eObject);
// create a indexSelector for this resource and instantiate transformation validator
ModelResourceIndexSelector selector = new ModelResourceIndexSelector(resource);
QueryMetadataContext context = new QueryMetadataContext(selector);
// set the resource scope (all model resources in open model projects)
context.setResources(resources);
// set the restrict search flag
context.setRestrictedSearch(restrictSearch);
return context;
}
/**
* Find the EObject having the specified UUID using the ObjectManager for the lookup. If an
* EObject with this UUID cannot be found then null is returned.
*/
protected EObject lookupEObject(final String uuid) {
CoreArgCheck.isNotEmpty(uuid);
// Before searching by UUID make sure all resources associated with this QMI are loaded
if (this.getResources() != null) {
for (Iterator iter = this.getResources().iterator(); iter.hasNext(); ) {
Resource r = (Resource) iter.next();
if (!r.isLoaded()) {
try {
r.load(Collections.EMPTY_MAP);
} catch (IOException e) {
TransformationPlugin.Util.log(IStatus.ERROR, e.getLocalizedMessage());
}
}
}
}
// Go to the Container ...
EObject eObject = null;
if (this.getContainer() != null) {
eObject = (EObject) this.getContainer().getEObjectFinder().find(uuid);
if (eObject != null) {
// get the resource on the object
Resource resource = eObject.eResource();
// check if this is among the resources is scope for this QMI
if (this.getResources() != null) {
Container cntr = ModelerCore.getContainer(resource);
// If the resource exists in the same Container as the one associated with this QMI
// but the resource is not in the scope of resources then return null
if (cntr == this.getContainer() && !this.getResources().contains(resource)) {
return null;
}
}
}
return eObject;
}
// We are in a non-container environment
Iterator rsrs = this.getResources().iterator();
while (rsrs.hasNext()) {
Resource rsrc = (Resource) rsrs.next();
if (rsrc instanceof MMXmiResource) {
eObject = ((MMXmiResource) rsrc).getEObject(uuid);
if (eObject != null) {
return eObject;
}
} else if (rsrc instanceof XSDResourceImpl) {
eObject = ((XSDResourceImpl) rsrc).getEObject(uuid);
if (eObject != null) {
return eObject;
}
}
}
return eObject;
}
/**
* Return a reference to a {@link QueryMetadataInterface} implementation that for the given
* eObject , its resourceand the resources that depend ont it. This assumes the Eobject is in a
* modelContainer, should be used only for workspace validation.
*
* @param eObject The eObject for which metadata instance is returned
* @param restrictSearch A boolean indicating if the search needs to be restricted to model
* imports or if the whole workspace needs to be searched
* @return the QueryMetadataInterface implementation; never null
*/
public QueryMetadataInterface getModelerMetadata(
final EObject eObject, final boolean restrictSearch) {
CoreArgCheck.isNotNull(eObject);
QueryMetadataContext context = buildQueryMetadataContext(eObject, restrictSearch);
Container container = null;
try {
container = ModelerCore.getModelContainer();
} catch (CoreException e) {
TransformationPlugin.Util.log(e);
}
return getModelerMetadata(context, container);
}
/**
* Return all metadata records for the entity that matches the given entity name and is of the
* type specified by the record type.
*
* @param recordType
* @param entityName the name to match
* @param isPartialName true if the entity name is a partially qualified
* @throws Exception
*/
@Override
protected Collection findMetadataRecords(
final char recordType, final String entityName, final boolean isPartialName)
throws Exception {
Collection eObjects = new ArrayList();
String uuid = null;
if (CoreStringUtil.startsWithIgnoreCase(entityName, UUID.PROTOCOL)) {
uuid = entityName.toLowerCase();
} else {
String shortName = getShortElementName(entityName);
if (CoreStringUtil.startsWithIgnoreCase(shortName, UUID.PROTOCOL)) {
uuid = shortName.toLowerCase();
}
}
// if it the element is a UUID
if (uuid != null) {
EObject eObj = lookupEObject(uuid);
if (eObj != null) {
// 12/31/03 (LLP) : fix for 10825. Prevent NPE when column has been deleted.
if (eObj.eContainer() != null || eObj.eResource() != null) {
eObjects.add(eObj);
}
}
}
// no eObjects found, could be cause the name is a "user string" or Eobject for UUID could
// not be found in any of open resources
if (eObjects.isEmpty()) {
Collection sysObjects = findSystemMetadataRecords(recordType, entityName, isPartialName);
if (!sysObjects.isEmpty()) {
return sysObjects;
}
// model name is first token
List tokens = CoreStringUtil.getTokens(entityName, DELIMITER_STRING);
String firstSegment = (String) tokens.get(0);
// check if a modelResource exists on the index selector,
// if so there are indexes to be queried
if (eObjects.isEmpty() && getIndexSelector() instanceof ModelResourceIndexSelector) {
if (ModelerCore.DEBUG_QUERY_RESOLUTION) {
final String debugMsg =
TransformationPlugin.Util.getString(
"ModelerMetadata.Resolving_entity_{0}_using_index_files_1",
entityName); //$NON-NLS-1$
TransformationPlugin.Util.log(IStatus.INFO, debugMsg);
}
ModelResourceIndexSelector resourceSelector =
(ModelResourceIndexSelector) getIndexSelector();
Object modelResource =
ModelerCore.getModelWorkspace().findModelResource(resourceSelector.getResource());
if (modelResource != null) {
// look up the index files instead of navigating the resources.
Collection records = super.findMetadataRecords(recordType, entityName, isPartialName);
if (!super.getContext().isRestrictedSearch() && records.isEmpty()) {
// if cant find query all files, there may have been no imports added
// some one is trying to resolved a query containing groups for which there are no
// imports
IndexSelector workspaceSelector = new ModelWorkspaceIndexSelector();
super.getContext().setIndexSelector(workspaceSelector);
// look up the index files for the whole workspace instead of looking at imported
// resources
records = super.findMetadataRecords(recordType, entityName, isPartialName);
// set back the resource selector for subsequent metadata lookup
super.getContext().setIndexSelector(resourceSelector);
}
if (ModelerCore.DEBUG_QUERY_RESOLUTION) {
final Object[] params = new Object[] {Integer.toString(records.size()), entityName};
final String debugMsg =
TransformationPlugin.Util.getString(
"ModelerMetadata.Found_{0}_records_for_the_entity_{1}_1",
params); //$NON-NLS-1$
ModelerCore.Util.log(IStatus.INFO, debugMsg);
}
if (!records.isEmpty()) {
return records;
}
if (uuid != null) {
ResourceSet[] resourceSets = this.getContainer().getExternalResourceSets();
for (int i = 0; i < resourceSets.length; i++) {
ResourceSet currentResourceSet = resourceSets[i];
if (currentResourceSet != null && currentResourceSet instanceof Container) {
Container externalContainer = (Container) currentResourceSet;
EObject externalEObj = (EObject) externalContainer.getEObjectFinder().find(uuid);
if (externalEObj != null) {
// 12/31/03 (LLP) : fix for 10825. Prevent NPE when column has been deleted.
if (externalEObj.eContainer() != null || externalEObj.eResource() != null) {
eObjects.add(externalEObj);
}
}
}
}
}
}
}
if (ModelerCore.DEBUG_QUERY_RESOLUTION) {
final String debugMsg =
TransformationPlugin.Util.getString(
"ModelerMetadata.Resolving_entity_{0}_by_navigating_the_workspace_1",
entityName); //$NON-NLS-1$
TransformationPlugin.Util.log(IStatus.INFO, debugMsg);
}
// Look up the EObject by path assuming the first path segement
// is the model name and the remaining segments are the path within
// the model
// find all resources for model name
Iterator resourceIter = this.findResourcesByName(firstSegment).iterator();
while (resourceIter.hasNext()) {
Resource resource = (Resource) resourceIter.next();
// find EObjects in each resource
if (resource != null) {
Collection entities = findEntitiesByName(resource, entityName, recordType, isPartialName);
for (Iterator iter = entities.iterator(); iter.hasNext(); ) {
EObject eObj = (EObject) iter.next();
if (eObj != null && (eObj.eContainer() != null || eObj.eResource() != null)) {
eObjects.add(eObj);
}
}
}
}
}
// find metadata records for the Eobjects collected
if (!eObjects.isEmpty()) {
Collection records = createMetadataRecords(recordType, eObjects);
if (ModelerCore.DEBUG_QUERY_RESOLUTION) {
final Object[] params = new Object[] {Integer.toString(records.size()), entityName};
final String debugMsg =
TransformationPlugin.Util.getString(
"ModelerMetadata.Found_{0}_records_for_the_entity_{1}_1", params); // $NON-NLS-1$
ModelerCore.Util.log(IStatus.INFO, debugMsg);
}
return records;
}
return Collections.EMPTY_LIST;
}