Examples with MaterializedViewColumnMappingExtractor com.facebook.presto.sql.analyzer.MaterializedViewColumnMappingExtractor used on opensource projects

Example 1 with MaterializedViewColumnMappingExtractor

use of com.facebook.presto.sql.analyzer.MaterializedViewColumnMappingExtractor in project presto by prestodb.

the class CreateMaterializedViewTask method execute.

@Override
public ListenableFuture<?> execute(CreateMaterializedView statement, TransactionManager transactionManager, Metadata metadata, AccessControl accessControl, Session session, List<Expression> parameters, WarningCollector warningCollector) {
    QualifiedObjectName viewName = createQualifiedObjectName(session, statement, statement.getName());
    Optional<TableHandle> viewHandle = metadata.getTableHandle(session, viewName);
    if (viewHandle.isPresent()) {
        if (!statement.isNotExists()) {
            throw new SemanticException(MATERIALIZED_VIEW_ALREADY_EXISTS, statement, "Materialized view '%s' already exists", viewName);
        }
        return immediateFuture(null);
    }
    accessControl.checkCanCreateTable(session.getRequiredTransactionId(), session.getIdentity(), session.getAccessControlContext(), viewName);
    accessControl.checkCanCreateView(session.getRequiredTransactionId(), session.getIdentity(), session.getAccessControlContext(), viewName);
    Analyzer analyzer = new Analyzer(session, metadata, sqlParser, accessControl, Optional.empty(), parameters, warningCollector);
    Analysis analysis = analyzer.analyze(statement);
    ConnectorId connectorId = metadata.getCatalogHandle(session, viewName.getCatalogName()).orElseThrow(() -> new PrestoException(NOT_FOUND, "Catalog does not exist: " + viewName.getCatalogName()));
    List<ColumnMetadata> columnMetadata = analysis.getOutputDescriptor(statement.getQuery()).getVisibleFields().stream().map(field -> new ColumnMetadata(field.getName().get(), field.getType())).collect(toImmutableList());
    Map<String, Expression> sqlProperties = mapFromProperties(statement.getProperties());
    Map<String, Object> properties = metadata.getTablePropertyManager().getProperties(connectorId, viewName.getCatalogName(), sqlProperties, session, metadata, parameters);
    ConnectorTableMetadata viewMetadata = new ConnectorTableMetadata(toSchemaTableName(viewName), columnMetadata, properties, statement.getComment());
    String sql = getFormattedSql(statement.getQuery(), sqlParser, Optional.of(parameters));
    List<SchemaTableName> baseTables = analysis.getTableNodes().stream().map(table -> {
        QualifiedObjectName tableName = createQualifiedObjectName(session, table, table.getName());
        if (!viewName.getCatalogName().equals(tableName.getCatalogName())) {
            throw new SemanticException(NOT_SUPPORTED, statement, "Materialized view %s created from a base table in a different catalog %s is not supported.", viewName, tableName);
        }
        return toSchemaTableName(tableName);
    }).distinct().collect(toImmutableList());
    MaterializedViewColumnMappingExtractor extractor = new MaterializedViewColumnMappingExtractor(analysis, session);
    ConnectorMaterializedViewDefinition viewDefinition = new ConnectorMaterializedViewDefinition(sql, viewName.getSchemaName(), viewName.getObjectName(), baseTables, Optional.of(session.getUser()), extractor.getMaterializedViewColumnMappings(), extractor.getMaterializedViewDirectColumnMappings(), extractor.getBaseTablesOnOuterJoinSide(), Optional.empty());
    try {
        metadata.createMaterializedView(session, viewName.getCatalogName(), viewMetadata, viewDefinition, statement.isNotExists());
    } catch (PrestoException e) {
        // connectors are not required to handle the ignoreExisting flag
        if (!e.getErrorCode().equals(ALREADY_EXISTS.toErrorCode()) || !statement.isNotExists()) {
            throw e;
        }
    }
    return immediateFuture(null);
}