use of com.facebook.presto.Session in project presto by prestodb.
the class TestBlackHoleSmoke method fieldLength.
@Test
public void fieldLength() {
Session session = testSessionBuilder().setCatalog("blackhole").setSchema("default").build();
assertThatQueryReturnsValue(format("CREATE TABLE nation WITH ( %s = 8, %s = 1, %s = 1, %s = 1 ) AS " + "SELECT nationkey, name, regionkey, comment, 'abc' short_varchar FROM tpch.tiny.nation", FIELD_LENGTH_PROPERTY, ROWS_PER_PAGE_PROPERTY, PAGES_PER_SPLIT_PROPERTY, SPLIT_COUNT_PROPERTY), 25L, session);
MaterializedResult rows = queryRunner.execute(session, "SELECT * FROM nation");
assertEquals(rows.getRowCount(), 1);
MaterializedRow row = Iterables.getOnlyElement(rows);
assertEquals(row.getFieldCount(), 5);
assertEquals(row.getField(0), 0L);
assertEquals(row.getField(1), "********");
assertEquals(row.getField(2), 0L);
assertEquals(row.getField(3), "********");
// this one is shorter due to column type being VARCHAR(3)
assertEquals(row.getField(4), "***");
assertThatQueryReturnsValue("DROP TABLE nation", true);
}
use of com.facebook.presto.Session in project presto by prestodb.
the class CallTask method execute.
@Override
public ListenableFuture<?> execute(Call call, TransactionManager transactionManager, Metadata metadata, AccessControl accessControl, QueryStateMachine stateMachine, List<Expression> parameters) {
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());
ConnectorId connectorId = metadata.getCatalogHandle(stateMachine.getSession(), procedureName.getCatalogName()).orElseThrow(() -> new SemanticException(MISSING_CATALOG, call, "Catalog %s does not exist", procedureName.getCatalogName()));
Procedure procedure = metadata.getProcedureRegistry().resolve(connectorId, procedureName.asSchemaTableName());
// 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 = ExpressionTreeRewriter.rewriteWith(new ParameterRewriter(parameters), callArgument.getValue());
Type type = metadata.getType(argument.getType());
checkCondition(type != null, INVALID_PROCEDURE_DEFINITION, "Unknown procedure argument type: %s", argument.getType());
Object value = evaluateConstantExpression(expression, type, metadata, session, parameters);
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(connectorId));
} 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 immediateFuture(null);
}
use of com.facebook.presto.Session in project presto by prestodb.
the class CreateSchemaTask method execute.
@Override
public ListenableFuture<?> execute(CreateSchema statement, TransactionManager transactionManager, Metadata metadata, AccessControl accessControl, QueryStateMachine stateMachine, List<Expression> parameters) {
Session session = stateMachine.getSession();
CatalogSchemaName schema = createCatalogSchemaName(session, statement, Optional.of(statement.getSchemaName()));
// TODO: validate that catalog exists
accessControl.checkCanCreateSchema(session.getRequiredTransactionId(), session.getIdentity(), schema);
if (metadata.schemaExists(session, schema)) {
if (!statement.isNotExists()) {
throw new SemanticException(SCHEMA_ALREADY_EXISTS, statement, "Schema '%s' already exists", schema);
}
return immediateFuture(null);
}
ConnectorId connectorId = metadata.getCatalogHandle(session, schema.getCatalogName()).orElseThrow(() -> new PrestoException(NOT_FOUND, "Catalog does not exist: " + schema.getCatalogName()));
Map<String, Object> properties = metadata.getSchemaPropertyManager().getProperties(connectorId, schema.getCatalogName(), statement.getProperties(), session, metadata, parameters);
metadata.createSchema(session, schema, properties);
return immediateFuture(null);
}
use of com.facebook.presto.Session in project presto by prestodb.
the class CreateViewTask method execute.
@Override
public ListenableFuture<?> execute(CreateView statement, TransactionManager transactionManager, Metadata metadata, AccessControl accessControl, QueryStateMachine stateMachine, List<Expression> parameters) {
Session session = stateMachine.getSession();
QualifiedObjectName name = createQualifiedObjectName(session, statement, statement.getName());
accessControl.checkCanCreateView(session.getRequiredTransactionId(), session.getIdentity(), name);
String sql = getFormattedSql(statement.getQuery(), sqlParser, Optional.of(parameters));
Analysis analysis = analyzeStatement(statement, session, metadata, accessControl, parameters);
List<ViewColumn> columns = analysis.getOutputDescriptor(statement.getQuery()).getVisibleFields().stream().map(field -> new ViewColumn(field.getName().get(), field.getType())).collect(toImmutableList());
String data = codec.toJson(new ViewDefinition(sql, session.getCatalog(), session.getSchema(), columns, Optional.of(session.getUser())));
metadata.createView(session, name, data, statement.isReplace());
return immediateFuture(null);
}
use of com.facebook.presto.Session in project presto by prestodb.
the class DropTableTask method execute.
@Override
public ListenableFuture<?> execute(DropTable statement, TransactionManager transactionManager, Metadata metadata, AccessControl accessControl, QueryStateMachine stateMachine, List<Expression> parameters) {
Session session = stateMachine.getSession();
QualifiedObjectName tableName = createQualifiedObjectName(session, statement, statement.getTableName());
Optional<TableHandle> tableHandle = metadata.getTableHandle(session, tableName);
if (!tableHandle.isPresent()) {
if (!statement.isExists()) {
throw new SemanticException(MISSING_TABLE, statement, "Table '%s' does not exist", tableName);
}
return immediateFuture(null);
}
accessControl.checkCanDropTable(session.getRequiredTransactionId(), session.getIdentity(), tableName);
metadata.dropTable(session, tableHandle.get());
return immediateFuture(null);
}
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