Module litebridge.db.spi.impl

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

Class Avg

java.lang.Object

org.litebridge.db.spi.expression.ColumnExpressionImpl

org.litebridge.db.spi.expression.DelegateColumnExpression

org.litebridge.db.spi.impl.function.DelegateColumnExpressionImpl

org.litebridge.db.spi.impl.function.FunctionExpression

org.litebridge.db.spi.impl.function.aggregate.Avg

All Implemented Interfaces:

ColumnExpression, DelegateExpression, SelectExpression

public class Avg
extends FunctionExpression

AVG(column) aggregate function.

Field Summary

Fields inherited from class org.litebridge.db.spi.impl.function.DelegateColumnExpressionImpl

columnIdentifierGenerator

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

target

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

column

Constructor Summary

Constructors

Constructor	Description
Avg(ColumnExpression target, ColumnIdentifierGenerator columnIdentifierGenerator)	Constructs a new AVG function expression.

Method Summary

Modifier and Type	Method	Description
protected String	template()	Gets the template for the SQL representation of the function.

Methods inherited from class org.litebridge.db.spi.impl.function.FunctionExpression

toSql

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

column, target

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

Constructor Details

Avg

public Avg(ColumnExpression target,
 ColumnIdentifierGenerator columnIdentifierGenerator)

Constructs a new AVG function expression.

Parameters:

target - The column expression to apply the function to.

columnIdentifierGenerator - The generator for column identifiers.

Method Details

template

protected String template()

Description copied from class: FunctionExpression

Gets the template for the SQL representation of the function.

The template should contain a single "%s" placeholder for the column identifier.

Specified by:

template in class FunctionExpression

Returns:

SQL representation template