org.hibernate.dialect.function
Class StandardAnsiSqlAggregationFunctions.AvgFunction

java.lang.Object
  extended by org.hibernate.dialect.function.StandardSQLFunction
      extended by org.hibernate.dialect.function.StandardAnsiSqlAggregationFunctions.AvgFunction
All Implemented Interfaces:
SQLFunction
Direct Known Subclasses:
AvgWithArgumentCastFunction
Enclosing class:
StandardAnsiSqlAggregationFunctions

public static class StandardAnsiSqlAggregationFunctions.AvgFunction
extends StandardSQLFunction

Definition of a standard ANSI SQL compliant AVG function


Field Summary
static StandardAnsiSqlAggregationFunctions.AvgFunction INSTANCE
           
 
Constructor Summary
StandardAnsiSqlAggregationFunctions.AvgFunction()
           
 
Method Summary
protected  int determineJdbcTypeCode(Type firstArgumentType, SessionFactoryImplementor factory)
           
protected  String render(int firstArgumentJdbcType, String argument, SessionFactoryImplementor factory)
           
 String render(Type firstArgumentType, List arguments, SessionFactoryImplementor factory)
          Render the function call as SQL fragment.
protected  String renderArgument(String argument, int firstArgumentJdbcType)
           
 
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
 

Field Detail

INSTANCE

public static final StandardAnsiSqlAggregationFunctions.AvgFunction INSTANCE
Constructor Detail

StandardAnsiSqlAggregationFunctions.AvgFunction

public StandardAnsiSqlAggregationFunctions.AvgFunction()
Method Detail

render

public String render(Type firstArgumentType,
                     List arguments,
                     SessionFactoryImplementor factory)
              throws QueryException
Description copied from class: StandardSQLFunction
Render the function call as SQL fragment.

Note, the 'firstArgumentType' parameter should match the one passed into SQLFunction.getReturnType(org.hibernate.type.Type, org.hibernate.engine.spi.Mapping)

Specified by:
render in interface SQLFunction
Overrides:
render in class StandardSQLFunction
Parameters:
firstArgumentType - The type of the first argument
arguments - The function arguments
factory - The SessionFactory
Returns:
The rendered function call
Throws:
QueryException - Indicates a problem rendering the function call.

determineJdbcTypeCode

protected final int determineJdbcTypeCode(Type firstArgumentType,
                                          SessionFactoryImplementor factory)
                                   throws QueryException
Throws:
QueryException

render

protected String render(int firstArgumentJdbcType,
                        String argument,
                        SessionFactoryImplementor factory)

renderArgument

protected String renderArgument(String argument,
                                int firstArgumentJdbcType)


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