本文整理了Java中com.facebook.presto.metadata.Metadata.listTableColumns()方法的一些代码示例，展示了Metadata.listTableColumns()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Metadata.listTableColumns()方法的具体详情如下：
包路径：com.facebook.presto.metadata.Metadata
类名称：Metadata
方法名：listTableColumns

Metadata.listTableColumns介绍

[英]Gets the metadata for all columns that match the specified table prefix.
[中]获取与指定表前缀匹配的所有列的元数据。

代码示例

代码示例来源：origin: prestodb/presto

public static Map<SchemaTableName, List<ColumnMetadata>> listTableColumns(Session session, Metadata metadata, AccessControl accessControl, QualifiedTablePrefix prefix)
  {
    Map<SchemaTableName, List<ColumnMetadata>> tableColumns = metadata.listTableColumns(session, prefix).entrySet().stream()
        .collect(toImmutableMap(entry -> entry.getKey().asSchemaTableName(), Entry::getValue));
    Set<SchemaTableName> allowedTables = accessControl.filterTables(
        session.getRequiredTransactionId(),
        session.getIdentity(),
        prefix.getCatalogName(),
        tableColumns.keySet());

    ImmutableMap.Builder<SchemaTableName, List<ColumnMetadata>> result = ImmutableMap.builder();
    for (Entry<SchemaTableName, List<ColumnMetadata>> entry : tableColumns.entrySet()) {
      if (allowedTables.contains(entry.getKey())) {
        result.put(entry);
      }
    }
    return result.build();
  }
}

代码示例来源：origin: uk.co.nichesolutions.presto/presto-main

private Map<QualifiedObjectName, List<ColumnMetadata>> getColumnsList(Session session, String catalogName, Map<String, NullableValue> filters)
{
  return metadata.listTableColumns(session, extractQualifiedTablePrefix(catalogName, filters));
}

代码示例来源：origin: uk.co.nichesolutions.presto/presto-main

@Override
public RecordCursor cursor(ConnectorTransactionHandle transactionHandle, ConnectorSession connectorSession, TupleDomain<Integer> constraint)
{
  GlobalSystemTransactionHandle transaction = checkType(transactionHandle, GlobalSystemTransactionHandle.class, "transaction");
  Session session = toSession(transaction.getTransactionId(), connectorSession);
  Optional<String> catalogFilter = stringFilter(constraint, 0);
  Optional<String> schemaFilter = stringFilter(constraint, 1);
  Optional<String> tableFilter = stringFilter(constraint, 2);
  Builder table = InMemoryRecordSet.builder(METADATA);
  for (String catalog : filter(metadata.getCatalogNames().keySet(), catalogFilter)) {
    QualifiedTablePrefix prefix = FilterUtil.tablePrefix(catalog, schemaFilter, tableFilter);
    for (Entry<QualifiedObjectName, List<ColumnMetadata>> entry : metadata.listTableColumns(session, prefix).entrySet()) {
      addColumnRows(table, entry.getKey(), entry.getValue());
    }
  }
  return table.build().cursor();
}