private InternalTable buildColumns(
Session session, String catalogName, Map<String, NullableValue> filters) {
InternalTable.Builder table =
InternalTable.builder(informationSchemaTableColumns(TABLE_COLUMNS));
for (Entry<QualifiedObjectName, List<ColumnMetadata>> entry :
getColumnsList(session, catalogName, filters).entrySet()) {
QualifiedObjectName tableName = entry.getKey();
int ordinalPosition = 1;
for (ColumnMetadata column : entry.getValue()) {
if (column.isHidden()) {
continue;
}
table.add(
tableName.getCatalogName(),
tableName.getSchemaName(),
tableName.getObjectName(),
column.getName(),
ordinalPosition,
null,
"YES",
column.getType().getDisplayName(),
column.getComment());
ordinalPosition++;
}
}
return table.build();
}
private InternalTable buildTables(
Session session, String catalogName, Map<String, NullableValue> filters) {
Set<QualifiedObjectName> tables =
ImmutableSet.copyOf(getTablesList(session, catalogName, filters));
Set<QualifiedObjectName> views =
ImmutableSet.copyOf(getViewsList(session, catalogName, filters));
InternalTable.Builder table =
InternalTable.builder(informationSchemaTableColumns(TABLE_TABLES));
for (QualifiedObjectName name : union(tables, views)) {
// if table and view names overlap, the view wins
String type = views.contains(name) ? "VIEW" : "BASE TABLE";
table.add(name.getCatalogName(), name.getSchemaName(), name.getObjectName(), type);
}
return table.build();
}
@Override
public CompletableFuture<?> execute(
Call call,
TransactionManager transactionManager,
Metadata metadata,
AccessControl accessControl,
QueryStateMachine stateMachine) {
if (!stateMachine.isAutoCommit()) {
throw new PrestoException(
NOT_SUPPORTED, "Procedures cannot be called within a transaction (use autocommit mode)");
}
Session session = stateMachine.getSession();
QualifiedObjectName procedureName = createQualifiedObjectName(session, call, call.getName());
Procedure procedure = metadata.getProcedureRegistry().resolve(procedureName);
// map declared argument names to positions
Map<String, Integer> positions = new HashMap<>();
for (int i = 0; i < procedure.getArguments().size(); i++) {
positions.put(procedure.getArguments().get(i).getName(), i);
}
// per specification, do not allow mixing argument types
Predicate<CallArgument> hasName = argument -> argument.getName().isPresent();
boolean anyNamed = call.getArguments().stream().anyMatch(hasName);
boolean allNamed = call.getArguments().stream().allMatch(hasName);
if (anyNamed && !allNamed) {
throw new SemanticException(
INVALID_PROCEDURE_ARGUMENTS, call, "Named and positional arguments cannot be mixed");
}
// get the argument names in call order
Map<String, CallArgument> names = new LinkedHashMap<>();
for (int i = 0; i < call.getArguments().size(); i++) {
CallArgument argument = call.getArguments().get(i);
if (argument.getName().isPresent()) {
String name = argument.getName().get();
if (names.put(name, argument) != null) {
throw new SemanticException(
INVALID_PROCEDURE_ARGUMENTS, argument, "Duplicate procedure argument: %s", name);
}
if (!positions.containsKey(name)) {
throw new SemanticException(
INVALID_PROCEDURE_ARGUMENTS, argument, "Unknown argument name: %s", name);
}
} else if (i < procedure.getArguments().size()) {
names.put(procedure.getArguments().get(i).getName(), argument);
} else {
throw new SemanticException(
INVALID_PROCEDURE_ARGUMENTS, call, "Too many arguments for procedure");
}
}
// verify argument count
if (names.size() < positions.size()) {
throw new SemanticException(
INVALID_PROCEDURE_ARGUMENTS, call, "Too few arguments for procedure");
}
// get argument values
Object[] values = new Object[procedure.getArguments().size()];
for (Entry<String, CallArgument> entry : names.entrySet()) {
CallArgument callArgument = entry.getValue();
int index = positions.get(entry.getKey());
Argument argument = procedure.getArguments().get(index);
Expression expression = callArgument.getValue();
Type type = argument.getType();
Object value = evaluateConstantExpression(expression, type, metadata, session);
values[index] = toTypeObjectValue(session, type, value);
}
// validate arguments
MethodType methodType = procedure.getMethodHandle().type();
for (int i = 0; i < procedure.getArguments().size(); i++) {
if ((values[i] == null) && methodType.parameterType(i).isPrimitive()) {
String name = procedure.getArguments().get(i).getName();
throw new PrestoException(
INVALID_PROCEDURE_ARGUMENT, "Procedure argument cannot be null: " + name);
}
}
// insert session argument
List<Object> arguments = new ArrayList<>();
Iterator<Object> valuesIterator = asList(values).iterator();
for (Class<?> type : methodType.parameterList()) {
if (ConnectorSession.class.isAssignableFrom(type)) {
arguments.add(session.toConnectorSession(procedureName.getCatalogName()));
} else {
arguments.add(valuesIterator.next());
}
}
try {
procedure.getMethodHandle().invokeWithArguments(arguments);
} catch (Throwable t) {
if (t instanceof InterruptedException) {
Thread.currentThread().interrupt();
}
propagateIfInstanceOf(t, PrestoException.class);
throw new PrestoException(PROCEDURE_CALL_FAILED, t);
}
return completedFuture(null);
}
