|
||||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | |||||||||
java.lang.Objectorg.apache.openjpa.kernel.exps.Val
org.apache.openjpa.kernel.exps.UnaryMathVal
abstract class UnaryMathVal
Value produced by a mathematical operation on one value.
| Constructor Summary | |
|---|---|
UnaryMathVal(Val val)
Constructor. |
|
| Method Summary | |
|---|---|
void |
acceptVisit(ExpressionVisitor visitor)
Accept a visit from a tree visitor. |
protected Object |
eval(Object candidate,
Object orig,
StoreContext ctx,
Object[] params)
Return this value for the given candidate. |
Class |
getType()
Return the expected type for this value, or Object if
the type is unknown. |
protected abstract Class |
getType(Class c)
Return the type of this value based on the numeric type being operated on. |
protected abstract Object |
operate(Object o,
Class c)
Return the result of this mathematical operation on the given value. |
void |
setImplicitType(Class type)
Set the implicit type of the value, based on how it is used in the filter. |
| Methods inherited from class org.apache.openjpa.kernel.exps.Val |
|---|
eval, evaluate, evaluate, getAlias, getMetaData, getName, getPath, getSelectAs, isAggregate, isVariable, isXPath, setAlias, setMetaData |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public UnaryMathVal(Val val)
| Method Detail |
|---|
public Class getType()
ValueObject if
the type is unknown.
public void setImplicitType(Class type)
ValueObject from Value.getType().
protected Object eval(Object candidate,
Object orig,
StoreContext ctx,
Object[] params)
Val
eval in class Valprotected abstract Class getType(Class c)
protected abstract Object operate(Object o,
Class c)
public void acceptVisit(ExpressionVisitor visitor)
Value
acceptVisit in interface ValueacceptVisit in class Val
|
||||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | |||||||||