/**
* @see org.teiid.query.resolver.CommandResolver#resolveCommand(org.teiid.query.sql.lang.Command,
* TempMetadataAdapter, boolean)
*/
@Override
public void resolveCommand(
Command command, TempMetadataAdapter metadata, boolean resolveNullLiterals) throws Exception {
DynamicCommand dynamicCmd = (DynamicCommand) command;
Iterator columns = dynamicCmd.getAsColumns().iterator();
Set<GroupSymbol> groups = new HashSet<GroupSymbol>();
// if there is no into group, just create temp metadata ids
if (dynamicCmd.getIntoGroup() == null) {
while (columns.hasNext()) {
ElementSymbol column = (ElementSymbol) columns.next();
column.setMetadataID(new TempMetadataID(column.getShortName(), column.getType()));
}
} else if (dynamicCmd.getIntoGroup().isTempGroupSymbol()) {
while (columns.hasNext()) {
ElementSymbol column = (ElementSymbol) columns.next();
GroupSymbol gs = getTeiidParser().createASTNode(ASTNodes.GROUP_SYMBOL);
gs.setName(dynamicCmd.getIntoGroup().getName());
column.setGroupSymbol(gs);
}
}
ResolverVisitor visitor = new ResolverVisitor(getTeiidParser().getVersion());
visitor.resolveLanguageObject(
dynamicCmd, groups, dynamicCmd.getExternalGroupContexts(), metadata);
String sqlType = getDataTypeManager().getDataTypeName(dynamicCmd.getSql().getType());
String targetType = DataTypeManagerService.DefaultDataTypes.STRING.getId();
if (!targetType.equals(sqlType)
&& !getDataTypeManager().isImplicitConversion(sqlType, targetType)) {
throw new QueryResolverException(Messages.gs(Messages.TEIID.TEIID30100, sqlType));
}
if (dynamicCmd.getUsing() != null && !dynamicCmd.getUsing().isEmpty()) {
for (SetClause clause : dynamicCmd.getUsing().getClauses()) {
ElementSymbol id = clause.getSymbol();
GroupSymbol gs = getTeiidParser().createASTNode(ASTNodes.GROUP_SYMBOL);
gs.setName(ProcedureReservedWords.DVARS);
id.setGroupSymbol(gs);
id.setType(clause.getValue().getType());
id.setMetadataID(new TempMetadataID(id.getName(), id.getType()));
}
}
GroupSymbol intoSymbol = dynamicCmd.getIntoGroup();
if (intoSymbol != null) {
if (!intoSymbol.isImplicitTempGroupSymbol()) {
ResolverUtil.resolveGroup(intoSymbol, metadata);
} else {
List symbols = dynamicCmd.getAsColumns();
ResolverUtil.resolveImplicitTempGroup(metadata, intoSymbol, symbols);
}
}
}
/**
* NOTE: we specifically don't need to visit the as columns or the using identifiers. These will
* be resolved by the dynamic command resolver instead.
*
* @see LanguageVisitor#visit(org.teiid.query.sql.lang.DynamicCommand)
*/
@Override
public void visit(DynamicCommand obj) {
preVisitVisitor(obj);
visitNode(obj.getSql());
visitNode(obj.getIntoGroup());
if (obj.getUsing() != null) {
for (SetClause setClause : obj.getUsing().getClauses()) {
visitNode(setClause.getValue());
}
}
postVisitVisitor(obj);
}