Module litebridge.db.spi.impl

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

Class Count

java.lang.Object

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

All Implemented Interfaces:

SelectExpression

public class Count
extends Object
implements SelectExpression

COUNT(*) aggregate function.

Constructor Summary

Constructors

Constructor	Description
Count()

Method Summary

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

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

Count

public Count()

Method Details

toSql

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

Description copied from interface: SelectExpression

Creates a SQL representation of the expression, providing the immediate nesting/parent expression.

Specified by:

toSql in interface SelectExpression

Parameters:

operation - the operation that is being executed

context - 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