Class TableInfo

java.lang.Object

io.trino.spi.eventlistener.TableInfo

public class TableInfo
extends Object

This class is JSON serializable for convenience and serialization compatibility is not guaranteed across versions.

Constructor Summary

Constructors

Constructor	Description
TableInfo(String catalog, String schema, String table, String authorization, List<String> filters, List<ColumnInfo> columns, boolean directlyReferenced, Optional<String> viewText, List<TableReferenceInfo> referenceChain)

Method Summary

Modifier and Type	Method	Description
String	getAuthorization()
String	getCatalog()
List<ColumnInfo>	getColumns()
List<String>	getFilters()
List<TableReferenceInfo>	getReferenceChain()	Get the reference chain for this table.
String	getSchema()
String	getTable()
Optional<String>	getViewText()	If this object refers to a view or materialized view, return the SQL text of the view.
boolean	isDirectlyReferenced()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

TableInfo

@Unstable
public TableInfo(String catalog,
 String schema,
 String table,
 String authorization,
 List<String> filters,
 List<ColumnInfo> columns,
 boolean directlyReferenced,
 Optional<String> viewText,
 List<TableReferenceInfo> referenceChain)

Method Details

getCatalog

public String getCatalog()

getSchema

public String getSchema()

getTable

public String getTable()

getAuthorization

public String getAuthorization()

getFilters

public List<String> getFilters()

getColumns

public List<ColumnInfo> getColumns()

isDirectlyReferenced

public boolean isDirectlyReferenced()

getViewText

public Optional<String> getViewText()

If this object refers to a view or materialized view, return the SQL text of the view.

Returns:

The SQL text of the view, or empty if this object does not refer to a view.

getReferenceChain

public List<TableReferenceInfo> getReferenceChain()

Get the reference chain for this table. Contains entries for view-like expressions such as views, column masks, and row filters. Note that in contrast to getFilters() and getColumns(), this has information about the reference chain leading this table to be included in the query, rather than information about which filters/masks were applied to this table scan.

Let us assume the following setup, with default catalog "default" and default schema "db":

 CREATE TABLE t_base (a INT, b INT);
 CREATE VIEW v1 AS SELECT * FROM t_base;
 CREATE VIEW v2 AS SELECT * FROM v1;

 Row filter for t_base:      a NOT IN (SELECT * FROM t_filter)
 Column mask for t_base.b:   IF(b IN (SELECT * FROM t_mask), b, NULL)
 

If we execute SELECT * FROM v2, we will see the following values for referenceChain:

 v2 -> []
 v1 -> [{"view", "default", "db", "v2"}]
 t_base -> [{"view", "default", "db", "v2"}, {"view", "default", "db", "v1"}]
 t_filter -> [{"view", "default", "db", "v2"}, {"view", "default", "db", "v1"}, {"rowFilter", "a NOT IN (SELECT * FROM t_filter)", "default", "db", "t_base"}]
 t_mask -> [{"view", "default", "db", "v2"}, {"view", "default", "db", "v1"}, {"columnMask", "IF(b IN SELECT * FROM t_mask, b, NULL)", "default", "db", "t_base"}]
 

Returns:

The reference chain leading to this table, in order.