Package org.apache.calcite.jdbc

Interface CalciteMetaColumnFactory

All Known Implementing Classes:

CalciteMetaColumnFactoryImpl

public interface CalciteMetaColumnFactory

Factory for creating instances of MetaImpl.MetaColumn.

See Also:

• DatabaseMetaData.getColumns(java.lang.String, java.lang.String, java.lang.String, java.lang.String)

Method Summary

Modifier and Type	Method	Description
org.apache.calcite.avatica.MetaImpl.MetaColumn	createColumn(Table table, String tableCat, String tableSchem, String tableName, String columnName, int dataType, String typeName, Integer columnSize, @Nullable Integer decimalDigits, int numPrecRadix, int nullable, Integer charOctetLength, int ordinalPosition, String isNullable)	Instantiates a MetaColumn.
default List<String>	getColumnNames()	Returns the list of expected column names.
Class<? extends org.apache.calcite.avatica.MetaImpl.MetaColumn>	getMetaColumnClass()	Returns the type of object created.

Method Details

createColumn

org.apache.calcite.avatica.MetaImpl.MetaColumn createColumn(Table table,
 String tableCat,
 String tableSchem,
 String tableName,
 String columnName,
 int dataType,
 String typeName,
 Integer columnSize,
 @Nullable Integer decimalDigits,
 int numPrecRadix,
 int nullable,
 Integer charOctetLength,
 int ordinalPosition,
 String isNullable)

Instantiates a MetaColumn.

getColumnNames

default List<String> getColumnNames()

Returns the list of expected column names.

The default implementation returns the columns described in the JDBC specification.

getMetaColumnClass

Class<? extends org.apache.calcite.avatica.MetaImpl.MetaColumn> getMetaColumnClass()

Returns the type of object created. Must be a subclass of MetaColumn.