org.apache.openjpa.kernel.exps
Class Index
java.lang.Object
org.apache.openjpa.kernel.exps.Val
org.apache.openjpa.kernel.exps.UnaryMathVal
org.apache.openjpa.kernel.exps.Index
- All Implemented Interfaces:
- Serializable, Value
class Index
- extends UnaryMathVal
Returns the index of a value within a collection/map.
- Author:
- Catalina Wei
Constructor Summary |
Index(Val val)
Constructor. |
Method Summary |
Class |
getType(Class c)
Return the type of this value based on the numeric type being operated
on. |
protected Object |
operate(Object o,
Class c)
Return the result of this mathematical operation on the given value. |
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 |
Index
public Index(Val val)
- Constructor.
getType
public Class getType(Class c)
- Description copied from class:
UnaryMathVal
- Return the type of this value based on the numeric type being operated
on.
- Specified by:
getType
in class UnaryMathVal
operate
protected Object operate(Object o,
Class c)
- Description copied from class:
UnaryMathVal
- Return the result of this mathematical operation on the given value.
- Specified by:
operate
in class UnaryMathVal
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