use of com.facebook.presto.sql.tree.SetSession in project presto by prestodb.
the class SetSessionTask method execute.
@Override
public ListenableFuture<?> execute(SetSession statement, TransactionManager transactionManager, Metadata metadata, AccessControl accessControl, QueryStateMachine stateMachine, List<Expression> parameters) {
Session session = stateMachine.getSession();
QualifiedName propertyName = statement.getName();
List<String> parts = propertyName.getParts();
if (parts.size() > 2) {
throw new SemanticException(INVALID_SESSION_PROPERTY, statement, "Invalid session property '%s'", propertyName);
}
// validate the property name
PropertyMetadata<?> propertyMetadata;
if (parts.size() == 1) {
accessControl.checkCanSetSystemSessionProperty(session.getIdentity(), parts.get(0));
propertyMetadata = metadata.getSessionPropertyManager().getSystemSessionPropertyMetadata(parts.get(0)).orElseThrow(() -> new SemanticException(INVALID_SESSION_PROPERTY, statement, "Session property %s does not exist", statement.getName()));
} else {
ConnectorId connectorId = metadata.getCatalogHandle(stateMachine.getSession(), parts.get(0)).orElseThrow(() -> new SemanticException(MISSING_CATALOG, statement, "Catalog %s does not exist", parts.get(0)));
accessControl.checkCanSetCatalogSessionProperty(session.getRequiredTransactionId(), session.getIdentity(), parts.get(0), parts.get(1));
propertyMetadata = metadata.getSessionPropertyManager().getConnectorSessionPropertyMetadata(connectorId, parts.get(1)).orElseThrow(() -> new SemanticException(INVALID_SESSION_PROPERTY, statement, "Session property %s does not exist", statement.getName()));
}
Type type = propertyMetadata.getSqlType();
Object objectValue;
try {
objectValue = evaluatePropertyValue(statement.getValue(), type, session, metadata, parameters);
} catch (SemanticException e) {
throw new PrestoException(StandardErrorCode.INVALID_SESSION_PROPERTY, format("Unable to set session property '%s' to '%s': %s", propertyName, statement.getValue(), e.getMessage()));
}
String value = serializeSessionProperty(type, objectValue);
// verify the SQL value can be decoded by the property
stateMachine.addSetSessionProperties(propertyName.toString(), value);
return immediateFuture(null);
}
use of com.facebook.presto.sql.tree.SetSession in project presto by prestodb.
the class TestSqlParser method testSetSession.
@Test
public void testSetSession() throws Exception {
assertStatement("SET SESSION foo = 'bar'", new SetSession(QualifiedName.of("foo"), new StringLiteral("bar")));
assertStatement("SET SESSION foo.bar = 'baz'", new SetSession(QualifiedName.of("foo", "bar"), new StringLiteral("baz")));
assertStatement("SET SESSION foo.bar.boo = 'baz'", new SetSession(QualifiedName.of("foo", "bar", "boo"), new StringLiteral("baz")));
assertStatement("SET SESSION foo.bar = 'ban' || 'ana'", new SetSession(QualifiedName.of("foo", "bar"), new FunctionCall(QualifiedName.of("concat"), ImmutableList.of(new StringLiteral("ban"), new StringLiteral("ana")))));
}
use of com.facebook.presto.sql.tree.SetSession in project presto by prestodb.
the class TestSetSessionTask method testSetSessionWithParameters.
private void testSetSessionWithParameters(Expression expression, String expectedValue, List<Expression> parameters) throws Exception {
QueryStateMachine stateMachine = QueryStateMachine.begin(new QueryId("query"), "set foo.bar = 'baz'", TEST_SESSION, URI.create("fake://uri"), false, transactionManager, accessControl, executor, metadata);
getFutureValue(new SetSessionTask().execute(new SetSession(QualifiedName.of(CATALOG_NAME, "bar"), expression), transactionManager, metadata, accessControl, stateMachine, parameters));
Map<String, String> sessionProperties = stateMachine.getSetSessionProperties();
assertEquals(sessionProperties, ImmutableMap.of("foo.bar", expectedValue));
}
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