org.sql.generation.api.grammar.factories
Interface ColumnsFactory

public interface ColumnsFactory

A factory to create various expressions related to columns. This factory is obtainable from SQLVendor.

Author:

Stanislav Muhametsin

See Also:

SQLVendor

Method Summary

ColumnReferenceByExpression	colExp(ValueExpression expression) Creates column reference, which has value of some expression.
ColumnReferenceByName	colName(String colName) Creates column reference, which references column by name, without table name.
ColumnReferenceByName	colName(String tableName, String colName) Creates column reference, which reference column by its name and by name of table, to which it belongs.
ColumnNameList	colNames(String... names) Constructs new ColumnNameList.

Method Detail

colExp

ColumnReferenceByExpression colExp(ValueExpression expression)

Creates column reference, which has value of some expression.

Parameters:

expression - The expression for the column.

Returns:

The new ColumnReferenceByExpression.

colName

ColumnReferenceByName colName(String colName)

Creates column reference, which references column by name, without table name.

Calling this method is equivalent in calling colName(String, String) and passing null as first argument.

Parameters:

colName - The name of the column.

Returns:

The new ColumnReferenceByName.

colName

ColumnReferenceByName colName(String tableName,
                              String colName)

Creates column reference, which reference column by its name and by name of table, to which it belongs.

Parameters:

tableName - The name of the table. May be null.

colName - The name of the column.

Returns:

The new ColumnReferenceByName.

colNames

ColumnNameList colNames(String... names)

Constructs new ColumnNameList.

Parameters:

names - The column names. At least one element must be present.

Returns:

The new ColumnNameList.