org.hibernate.dialect

public Interface ColumnAliasExtractor

Strategy for extracting the unique column alias out of a ResultSetMetaData. This is used during the "auto discovery" phase of native SQL queries.

Generally this should be done via ResultSetMetaData#getColumnLabel, but not all drivers do this correctly.

Field Summary

Modifier and Type	Field and Description
public static final ColumnAliasExtractor	COLUMN_LABEL_EXTRACTOR An extractor which uses `ResultSetMetaData#getColumnLabel`
public static final ColumnAliasExtractor	COLUMN_NAME_EXTRACTOR An extractor which uses `ResultSetMetaData#getColumnName`

Modifier and Type	Method and Description
public String	Returns: The alias extractColumnAlias(ResultSetMetaData The result set metadata metaData, int The column position position) Extract the unique column alias.

COLUMN_LABEL_EXTRACTOR	back to summary
public static final ColumnAliasExtractor COLUMN_LABEL_EXTRACTOR An extractor which uses `ResultSetMetaData#getColumnLabel`

COLUMN_NAME_EXTRACTOR	back to summary
public static final ColumnAliasExtractor COLUMN_NAME_EXTRACTOR An extractor which uses `ResultSetMetaData#getColumnName` Annotations @SuppressWarnings:UnusedDeclaration

extractColumnAlias

public String extractColumnAlias(ResultSetMetaData metaData, int position) throws SQLException

Extract the unique column alias.

Parameters

Returns:String

The alias

Exceptions