/**
* Returns the hash code value for this {@code OpenMBeanParameterInfoSupport} instance.
*
* <p>The hash code of an {@code OpenMBeanParameterInfoSupport} instance is the sum of the hash
* codes of all elements of information used in {@code equals} comparisons (ie: its name, its
* <i>open type</i>, its default, min, max and legal values, and its Descriptor).
*
* <p>This ensures that {@code t1.equals(t2)} implies that {@code t1.hashCode()==t2.hashCode()}
* for any two {@code OpenMBeanParameterInfoSupport} instances {@code t1} and {@code t2}, as
* required by the general contract of the method {@link Object#hashCode() Object.hashCode()}.
*
* <p>However, note that another instance of a class implementing the {@code
* OpenMBeanParameterInfo} interface may be equal to this {@code OpenMBeanParameterInfoSupport}
* instance as defined by {@link #equals(java.lang.Object)}, but may have a different hash code if
* it is calculated differently.
*
* <p>As {@code OpenMBeanParameterInfoSupport} instances are immutable, the hash code for this
* instance is calculated once, on the first call to {@code hashCode}, and then the same value is
* returned for subsequent calls.
*
* @return the hash code value for this {@code OpenMBeanParameterInfoSupport} instance
*/
public int hashCode() {
// Calculate the hash code value if it has not yet been done
// (ie 1st call to hashCode())
//
if (myHashCode == null) myHashCode = OpenMBeanAttributeInfoSupport.hashCode(this);
// return always the same hash code for this instance (immutable)
//
return myHashCode.intValue();
}
/**
* Returns a string representation of this {@code OpenMBeanParameterInfoSupport} instance.
*
* <p>The string representation consists of the name of this class (i.e. {@code
* javax.management.openmbean.OpenMBeanParameterInfoSupport}), the string representation of the
* name and open type of the described parameter, the string representation of its default, min,
* max and legal values and the string representation of its descriptor.
*
* <p>As {@code OpenMBeanParameterInfoSupport} instances are immutable, the string representation
* for this instance is calculated once, on the first call to {@code toString}, and then the same
* value is returned for subsequent calls.
*
* @return a string representation of this {@code OpenMBeanParameterInfoSupport} instance.
*/
public String toString() {
// Calculate the string value if it has not yet been done (ie
// 1st call to toString())
//
if (myToString == null) myToString = OpenMBeanAttributeInfoSupport.toString(this);
// return always the same string representation for this
// instance (immutable)
//
return myToString;
}
/**
* Tests whether {@code obj} is a valid value for the parameter described by this {@code
* OpenMBeanParameterInfo} instance.
*
* @param obj the object to be tested.
* @return {@code true} if {@code obj} is a valid value for the parameter described by this {@code
* OpenMBeanParameterInfo} instance, {@code false} otherwise.
*/
public boolean isValue(Object obj) {
return OpenMBeanAttributeInfoSupport.isValue(this, obj);
// compiler bug? should be able to omit class name here
// also below in toString and hashCode
}