org.apache.openjpa.jdbc.kernel.exps
Class Sum

java.lang.Object
  extended by org.apache.openjpa.jdbc.kernel.exps.AbstractVal
      extended by org.apache.openjpa.jdbc.kernel.exps.UnaryOp
          extended by org.apache.openjpa.jdbc.kernel.exps.Sum
All Implemented Interfaces:
Serializable, Val, Value

 class Sum
extends UnaryOp

Sum.

Author:
Abe White

Field Summary
 
Fields inherited from class org.apache.openjpa.jdbc.kernel.exps.AbstractVal
FALSE, TRUE
 
Fields inherited from interface org.apache.openjpa.jdbc.kernel.exps.Val
ABS_VAL, ARGS_VAL, CONCAT_VAL, FORCE_OUTER, INDEXOF_VAL, JOIN_REL, LENGTH_VAL, LOCATE_VAL, LOWER_VAL, MATH_VAL, NULL_CMP, SQRT_VAL, SUBSTRING_VAL, TRIM_VAL, UPPER_VAL, VAL
 
Constructor Summary
Sum(Val val)
          Constructor.
 
Method Summary
protected  String getOperator()
          Return the name of this operator.
protected  Class getType(Class c)
          Return the type of this value based on the argument type.
 boolean isAggregate()
          Return true if this value is an aggregate.
 
Methods inherited from class org.apache.openjpa.jdbc.kernel.exps.UnaryOp
acceptVisit, appendTo, calculateValue, getMetaData, getNoParen, getType, getValue, groupBy, initialize, initializeValue, length, load, orderBy, select, selectColumns, setImplicitType, setMetaData
 
Methods inherited from class org.apache.openjpa.jdbc.kernel.exps.AbstractVal
appendIsEmpty, appendIsNotEmpty, appendIsNotNull, appendIsNull, appendSize, getId, isVariable, isXPath, toDataStoreValue
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Sum

public Sum(Val val)
Constructor. Provide the value to operate on.

Method Detail

getType

protected Class getType(Class c)
Description copied from class: UnaryOp
Return the type of this value based on the argument type. Returns the argument type by default.

Overrides:
getType in class UnaryOp

getOperator

protected String getOperator()
Description copied from class: UnaryOp
Return the name of this operator.

Specified by:
getOperator in class UnaryOp

isAggregate

public boolean isAggregate()
Description copied from interface: Value
Return true if this value is an aggregate.

Specified by:
isAggregate in interface Value
Overrides:
isAggregate in class AbstractVal


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