private RelationalNode correctProjectionInternalTables(PlanNode node, AccessNode aNode)
throws QueryMetadataException, TeiidComponentException {
if (node.getGroups().size() != 1) {
return aNode;
}
GroupSymbol group = node.getGroups().iterator().next();
if (!CoreConstants.SYSTEM_MODEL.equals(
metadata.getFullName(metadata.getModelID(group.getMetadataID())))
&& !CoreConstants.SYSTEM_ADMIN_MODEL.equals(
metadata.getFullName(metadata.getModelID(group.getMetadataID())))) {
return aNode;
}
List projectSymbols = (List) node.getProperty(NodeConstants.Info.OUTPUT_COLS);
List<ElementSymbol> acutalColumns = ResolverUtil.resolveElementsInGroup(group, metadata);
if (projectSymbols.equals(acutalColumns)) {
return aNode;
}
node.setProperty(NodeConstants.Info.OUTPUT_COLS, acutalColumns);
if (node.getParent() != null && node.getParent().getType() == NodeConstants.Types.PROJECT) {
// if the parent is already a project, just correcting the output cols is enough
return aNode;
}
ProjectNode pnode = new ProjectNode(getID());
pnode.setSelectSymbols(projectSymbols);
aNode = (AccessNode) prepareToAdd(node, aNode);
node.setProperty(NodeConstants.Info.OUTPUT_COLS, projectSymbols);
pnode.addChild(aNode);
return pnode;
}
private void checkForSharedSourceCommand(AccessNode aNode) {
// create a top level key to avoid the full command toString
String modelName = aNode.getModelName();
Command cmd = aNode.getCommand();
// don't share full scans against internal sources, it's a waste of buffering
if (CoreConstants.SYSTEM_MODEL.equals(modelName)
|| CoreConstants.SYSTEM_ADMIN_MODEL.equals(modelName)
|| TempMetadataAdapter.TEMP_MODEL.getName().equals(modelName)) {
if (!(cmd instanceof Query)) {
return;
}
Query query = (Query) cmd;
if (query.getOrderBy() == null && query.getCriteria() == null) {
return;
}
}
AccessNode other = sharedCommands.get(cmd);
if (other == null) {
sharedCommands.put(cmd, aNode);
} else {
if (other.info == null) {
other.info = new RegisterRequestParameter.SharedAccessInfo();
other.info.id = sharedId.getAndIncrement();
}
other.info.sharingCount++;
aNode.info = other.info;
}
}
public boolean isSystemFunction(String name) {
return this.getName().equalsIgnoreCase(name)
&& CoreConstants.SYSTEM_MODEL.equals(this.getSchema());
}
public String getFullName() {
if (CoreConstants.SYSTEM_MODEL.equals(this.schema)) {
return getName();
}
return this.schema + AbstractMetadataRecord.NAME_DELIM_CHAR + getName();
}