org.hibernate.dialect.function

Class AvgWithArgumentCastFunction

java.lang.Object

org.hibernate.dialect.function.StandardSQLFunction

org.hibernate.dialect.function.StandardAnsiSqlAggregationFunctions.AvgFunction

org.hibernate.dialect.function.AvgWithArgumentCastFunction

All Implemented Interfaces:

SQLFunction

public class AvgWithArgumentCastFunction
extends StandardAnsiSqlAggregationFunctions.AvgFunction

Some databases strictly return the type of the of the aggregation value for AVG which is problematic in the case of averaging integers because the decimals will be dropped. The usual workaround is to cast the integer argument as some form of double/decimal.

Field Summary

Fields inherited from class org.hibernate.dialect.function.StandardAnsiSqlAggregationFunctions.AvgFunction

INSTANCE

Constructor Summary

Constructors

Constructor and Description
AvgWithArgumentCastFunction(java.lang.String castType) Constructs a AvgWithArgumentCastFunction

Method Summary

Modifier and Type	Method and Description
protected java.lang.String	renderArgument(java.lang.String argument, int firstArgumentJdbcType)

Methods inherited from class org.hibernate.dialect.function.StandardAnsiSqlAggregationFunctions.AvgFunction

determineJdbcTypeCode, render, render

Methods inherited from class org.hibernate.dialect.function.StandardSQLFunction

getName, getRenderedName, getReturnType, getType, hasArguments, hasParenthesesIfNoArguments, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

AvgWithArgumentCastFunction

public AvgWithArgumentCastFunction(java.lang.String castType)

Constructs a AvgWithArgumentCastFunction

Parameters:

castType - The type to cast the avg argument to

Method Detail

renderArgument

protected java.lang.String renderArgument(java.lang.String argument,
                                          int firstArgumentJdbcType)

Overrides:

renderArgument in class StandardAnsiSqlAggregationFunctions.AvgFunction