Examples with TableColumn com.facebook.presto.spi.ConnectorMaterializedViewDefinition.TableColumn used on opensource projects

Example 1 with TableColumn

use of com.facebook.presto.spi.ConnectorMaterializedViewDefinition.TableColumn in project presto by prestodb.

the class MaterializedViewColumnMappingExtractor method getColumnMappings.

private static Map<String, Map<SchemaTableName, String>> getColumnMappings(Analysis analysis, Map<TableColumn, Set<TableColumn>> columnMappings) {
    checkState(analysis.getStatement() instanceof CreateMaterializedView, "Only support the computation of column mappings when analyzing CreateMaterializedView");
    ImmutableMap.Builder<String, Map<SchemaTableName, String>> fullColumnMappings = ImmutableMap.builder();
    Map<String, TableColumn> originalColumnMappings = getOriginalColumnsFromAnalysis(analysis);
    for (Map.Entry<String, TableColumn> columnMapping : originalColumnMappings.entrySet()) {
        String viewColumn = columnMapping.getKey();
        TableColumn originalBaseColumn = columnMapping.getValue();
        Map<SchemaTableName, String> fullBaseColumns = columnMappings.getOrDefault(originalBaseColumn, ImmutableSet.of(originalBaseColumn)).stream().collect(toImmutableMap(e -> e.getTableName(), e -> e.getColumnName()));
        fullColumnMappings.put(viewColumn, fullBaseColumns);
    }
    return fullColumnMappings.build();
}

Example 2 with TableColumn

use of com.facebook.presto.spi.ConnectorMaterializedViewDefinition.TableColumn in project presto by prestodb.

the class MaterializedViewColumnMappingExtractor method tryGetOriginalTableColumn.

private static Optional<TableColumn> tryGetOriginalTableColumn(Field field) {
    if (field.getOriginTable().isPresent() && field.getOriginColumnName().isPresent()) {
        SchemaTableName table = toSchemaTableName(field.getOriginTable().get());
        String column = field.getOriginColumnName().get();
        return Optional.of(new TableColumn(table, column, true));
    }
    return Optional.empty();
}