Examples with TableElement com.facebook.presto.sql.tree.TableElement used on opensource projects

Example 1 with TableElement

use of com.facebook.presto.sql.tree.TableElement in project presto by prestodb.

the class CreateTableTask method execute.

@Override
public ListenableFuture<?> execute(CreateTable statement, TransactionManager transactionManager, Metadata metadata, AccessControl accessControl, QueryStateMachine stateMachine, List<Expression> parameters) {
    checkArgument(!statement.getElements().isEmpty(), "no columns for table");
    Session session = stateMachine.getSession();
    QualifiedObjectName tableName = createQualifiedObjectName(session, statement, statement.getName());
    Optional<TableHandle> tableHandle = metadata.getTableHandle(session, tableName);
    if (tableHandle.isPresent()) {
        if (!statement.isNotExists()) {
            throw new SemanticException(TABLE_ALREADY_EXISTS, statement, "Table '%s' already exists", tableName);
        }
        return immediateFuture(null);
    }
    List<ColumnMetadata> columns = new ArrayList<>();
    Map<String, Object> inheritedProperties = ImmutableMap.of();
    boolean includingProperties = false;
    for (TableElement element : statement.getElements()) {
        if (element instanceof ColumnDefinition) {
            ColumnDefinition column = (ColumnDefinition) element;
            Type type = metadata.getType(parseTypeSignature(column.getType()));
            if ((type == null) || type.equals(UNKNOWN)) {
                throw new SemanticException(TYPE_MISMATCH, column, "Unknown type for column '%s' ", column.getName());
            }
            columns.add(new ColumnMetadata(column.getName(), type, column.getComment().orElse(null), false));
        } else if (element instanceof LikeClause) {
            LikeClause likeClause = (LikeClause) element;
            QualifiedObjectName likeTableName = createQualifiedObjectName(session, statement, likeClause.getTableName());
            if (!metadata.getCatalogHandle(session, likeTableName.getCatalogName()).isPresent()) {
                throw new SemanticException(MISSING_CATALOG, statement, "LIKE table catalog '%s' does not exist", likeTableName.getCatalogName());
            }
            if (!tableName.getCatalogName().equals(likeTableName.getCatalogName())) {
                throw new SemanticException(NOT_SUPPORTED, statement, "LIKE table across catalogs is not supported");
            }
            TableHandle likeTable = metadata.getTableHandle(session, likeTableName).orElseThrow(() -> new SemanticException(MISSING_TABLE, statement, "LIKE table '%s' does not exist", likeTableName));
            TableMetadata likeTableMetadata = metadata.getTableMetadata(session, likeTable);
            Optional<LikeClause.PropertiesOption> propertiesOption = likeClause.getPropertiesOption();
            if (propertiesOption.isPresent() && propertiesOption.get().equals(LikeClause.PropertiesOption.INCLUDING)) {
                if (includingProperties) {
                    throw new SemanticException(NOT_SUPPORTED, statement, "Only one LIKE clause can specify INCLUDING PROPERTIES");
                }
                includingProperties = true;
                inheritedProperties = likeTableMetadata.getMetadata().getProperties();
            }
            likeTableMetadata.getColumns().stream().filter(column -> !column.isHidden()).forEach(columns::add);
        } else {
            throw new PrestoException(GENERIC_INTERNAL_ERROR, "Invalid TableElement: " + element.getClass().getName());
        }
    }
    accessControl.checkCanCreateTable(session.getRequiredTransactionId(), session.getIdentity(), tableName);
    ConnectorId connectorId = metadata.getCatalogHandle(session, tableName.getCatalogName()).orElseThrow(() -> new PrestoException(NOT_FOUND, "Catalog does not exist: " + tableName.getCatalogName()));
    Map<String, Object> properties = metadata.getTablePropertyManager().getProperties(connectorId, tableName.getCatalogName(), statement.getProperties(), session, metadata, parameters);
    Map<String, Object> finalProperties = combineProperties(statement.getProperties().keySet(), properties, inheritedProperties);
    ConnectorTableMetadata tableMetadata = new ConnectorTableMetadata(tableName.asSchemaTableName(), columns, finalProperties);
    metadata.createTable(session, tableName.getCatalogName(), tableMetadata);
    return immediateFuture(null);
}