org.gcube.portlets.user.timeseries.charts.support.assertions
Class Assertion<T extends Throwable>
java.lang.Object
org.gcube.portlets.user.timeseries.charts.support.assertions.Assertion<T>
- All Implemented Interfaces:
- Serializable
public class Assertion<T extends Throwable>
- extends Object
- implements Serializable
General purpose assertion handler.
Assertion can be generalized to check a boolean expression and
to raise an exception in correspondence to a failure happening
during checking.
Example:
Assertion<TheExceptionType> assertion = new Assertion<ParamException> ();
assertion.validate (param != null, new TheExceptionType("invalid parameter null"));
or, in a more compact form:
// The exception to throw in case of failure
// during the evaluation of the expected condition
new Assertion<TheExceptionType>().validate(
i>5, // The expected boolean condition
new TheExceptionType("Parameter must be greater than 5")); //The error message
- Author:
- Daniele Strollo (ISTI-CNR)
- See Also:
- Serialized Form
Method Summary |
void |
validate(boolean assertion,
T exc)
Makes an assertion and if the expression evaluation fails, throws an
exception of type T. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Assertion
public Assertion()
validate
public final void validate(boolean assertion,
T exc)
throws T extends Throwable
- Makes an assertion and if the expression evaluation fails, throws an
exception of type T.
Example:
new Assertion<MyException>().validate(whatExpected, new MyException("guard failed"));
- Parameters:
assertion
- the boolean expression to evaluateexc
- the exception to throw if the condition does not hold
- Throws:
T
- the exception extending Throwable
T extends Throwable
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