Module litebridge.db.spi.impl

Package org.litebridge.db.spi.impl.function

Class SelectColumn

java.lang.Object

org.litebridge.db.spi.expression.ColumnExpressionImpl

org.litebridge.db.spi.impl.function.SelectColumn

All Implemented Interfaces:

ColumnExpression, SelectExpression

public class SelectColumn
extends ColumnExpressionImpl

Expression to select a database column.

Field Summary

Fields

Modifier and Type	Field	Description
protected final ColumnIdentifierGenerator	columnIdentifierGenerator	The column identifier generator used to create SQL column identifiers.

Fields inherited from class org.litebridge.db.spi.expression.ColumnExpressionImpl

column

Constructor Summary

Constructors

Constructor	Description
SelectColumn(Column column, ColumnIdentifierGenerator columnIdentifierGenerator)	Creates a new SelectColumn.

Method Summary

Modifier and Type	Method	Description
String	toSql(Operation operation, ClauseType clause, @Nullable DelegateExpression parent)	Creates a SQL representation of the expression.

Methods inherited from class org.litebridge.db.spi.expression.ColumnExpressionImpl

column

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.litebridge.db.spi.expression.SelectExpression

toSql

Field Details

columnIdentifierGenerator

protected final ColumnIdentifierGenerator columnIdentifierGenerator

The column identifier generator used to create SQL column identifiers.

Constructor Details

SelectColumn

public SelectColumn(Column column,
 ColumnIdentifierGenerator columnIdentifierGenerator)

Creates a new SelectColumn.

Parameters:

column - the column

columnIdentifierGenerator - the column identifier generator

Method Details

toSql

public String toSql(Operation operation,
 ClauseType clause,
 @Nullable DelegateExpression parent)

Creates a SQL representation of the expression.

This is usually used for expressions that do not require any aliases.

Parameters:

operation - the operation that is being executed

clause - The current clause type being evaluated

parent - The parent expression/nesting expression, or null if this is a top-level expression

Returns:

the SQL representation of the expression