Package org.apache.torque.util.functions
Class Count
java.lang.Object
org.apache.torque.util.functions.AggregateFunction
org.apache.torque.util.functions.Count
- All Implemented Interfaces:
Column,SQLFunction
SQL99 Standard count function.
- Version:
- $Id: Count.java 1848281 2018-12-06 10:48:36Z tv $
-
Constructor Summary
ConstructorsConstructorDescriptionConstruct an COUNT function class with an SQL expression to count.Construct an COUNT function class with the column to count.Construct an COUNT function class with the column to count and possibly a distinct modifier. -
Method Summary
Modifier and TypeMethodDescriptionvoidsetFunction(String function) This method cannot be called, an UnsupportedOperationException will always be thrown.Methods inherited from class org.apache.torque.util.functions.AggregateFunction
getArgument, getArguments, getColumn, getColumnName, getFullTableName, getFunction, getSchemaName, getSqlExpression, getTableName, isDistinct, setArguments, setColumn
-
Constructor Details
-
Count
Construct an COUNT function class with the column to count.- Parameters:
column- the Column to count.
-
Count
Construct an COUNT function class with an SQL expression to count.- Parameters:
sqlExpression- the SQL expression to count.
-
Count
Construct an COUNT function class with the column to count and possibly a distinct modifier.- Parameters:
column- the Column to count.distinct- whether to count only over distinct values.
-
-
Method Details
-
setFunction
This method cannot be called, an UnsupportedOperationException will always be thrown.- Overrides:
setFunctionin classAggregateFunction- Parameters:
function- disregarded.- Throws:
UnsupportedOperationException- always.
-