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

AvgWithArgumentCastFunction(String castType)

Method Summary

protected String

renderArgument(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, 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(String castType)

Method Detail

renderArgument

protected String renderArgument(String argument,
                                int firstArgumentJdbcType)

Overrides:

renderArgument in class StandardAnsiSqlAggregationFunctions.AvgFunction