OpenMBeanParameterInfo (Java Platform SE 6) - JDK 5 Documentation v6.0, Java 2 SDK 英文文档

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Java™ Platform
Standard Ed. 6

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javax.management.openmbean
Interface OpenMBeanParameterInfo

All Known Subinterfaces:: OpenMBeanAttributeInfo

All Known Implementing Classes:: OpenMBeanAttributeInfoSupport, OpenMBeanParameterInfoSupport

public interface OpenMBeanParameterInfo

Describes a parameter used in one or more operations or constructors of an open MBean.

This interface declares the same methods as the class MBeanParameterInfo. A class implementing this interface (typically OpenMBeanParameterInfoSupport) should extend MBeanParameterInfo.

Since:: 1.5

Method Summary

boolean equals(Object obj)
          Compares the specified obj parameter with this OpenMBeanParameterInfo instance for equality.

Object getDefaultValue()
          Returns the default value for this parameter, if it has one, or null otherwise.

String getDescription()
          Returns a human readable description of the parameter described by this OpenMBeanParameterInfo instance.

Set<?> getLegalValues()
          Returns the set of legal values for this parameter, if it has one, or null otherwise.

Comparable<?> getMaxValue()
          Returns the maximal value for this parameter, if it has one, or null otherwise.

Comparable<?> getMinValue()
          Returns the minimal value for this parameter, if it has one, or null otherwise.

String getName()
          Returns the name of the parameter described by this OpenMBeanParameterInfo instance.

OpenType<?> getOpenType()
          Returns the open type of the values of the parameter described by this OpenMBeanParameterInfo instance.

boolean hasDefaultValue()
          Returns true if this parameter has a specified default value, or false otherwise.

int hashCode()
          Returns the hash code value for this OpenMBeanParameterInfo instance.

boolean hasLegalValues()
          Returns true if this parameter has a specified set of legal values, or false otherwise.

boolean hasMaxValue()
          Returns true if this parameter has a specified maximal value, or false otherwise.

boolean hasMinValue()
          Returns true if this parameter has a specified minimal value, or false otherwise.

boolean isValue(Object obj)
          Tests whether obj is a valid value for the parameter described by this OpenMBeanParameterInfo instance.

String toString()
          Returns a string representation of this OpenMBeanParameterInfo instance.

Method Summary
`boolean`	`equals(Object obj)` Compares the specified `obj` parameter with this `OpenMBeanParameterInfo` instance for equality.
`Object`	`getDefaultValue()` Returns the default value for this parameter, if it has one, or `null` otherwise.
`String`	`getDescription()` Returns a human readable description of the parameter described by this `OpenMBeanParameterInfo` instance.
`Set<?>`	`getLegalValues()` Returns the set of legal values for this parameter, if it has one, or `null` otherwise.
`Comparable<?>`	`getMaxValue()` Returns the maximal value for this parameter, if it has one, or `null` otherwise.
`Comparable<?>`	`getMinValue()` Returns the minimal value for this parameter, if it has one, or `null` otherwise.
`String`	`getName()` Returns the name of the parameter described by this `OpenMBeanParameterInfo` instance.
`OpenType<?>`	`getOpenType()` Returns the open type of the values of the parameter described by this `OpenMBeanParameterInfo` instance.
`boolean`	`hasDefaultValue()` Returns `true` if this parameter has a specified default value, or `false` otherwise.
`int`	`hashCode()` Returns the hash code value for this `OpenMBeanParameterInfo` instance.
`boolean`	`hasLegalValues()` Returns `true` if this parameter has a specified set of legal values, or `false` otherwise.
`boolean`	`hasMaxValue()` Returns `true` if this parameter has a specified maximal value, or `false` otherwise.
`boolean`	`hasMinValue()` Returns `true` if this parameter has a specified minimal value, or `false` otherwise.
`boolean`	`isValue(Object obj)` Tests whether `obj` is a valid value for the parameter described by this `OpenMBeanParameterInfo` instance.
`String`	`toString()` Returns a string representation of this `OpenMBeanParameterInfo` instance.

Method Detail

getDescription

String getDescription()

Returns a human readable description of the parameter described by this OpenMBeanParameterInfo instance.

Returns:: the description.

getName

String getName()

Returns the name of the parameter described by this OpenMBeanParameterInfo instance.

Returns:: the name.

getOpenType

OpenType<?> getOpenType()

Returns the open type of the values of the parameter described by this OpenMBeanParameterInfo instance.

Returns:: the open type.

getDefaultValue

Object getDefaultValue()

Returns the default value for this parameter, if it has one, or null otherwise.

Returns:: the default value.

getLegalValues

Set<?> getLegalValues()

Returns the set of legal values for this parameter, if it has one, or null otherwise.

Returns:: the set of legal values.

getMinValue

Comparable<?> getMinValue()

Returns the minimal value for this parameter, if it has one, or null otherwise.

Returns:: the minimum value.

getMaxValue

Comparable<?> getMaxValue()

Returns the maximal value for this parameter, if it has one, or null otherwise.

Returns:: the maximum value.

hasDefaultValue

boolean hasDefaultValue()

Returns true if this parameter has a specified default value, or false otherwise.

Returns:: true if there is a default value.

hasLegalValues

boolean hasLegalValues()

Returns true if this parameter has a specified set of legal values, or false otherwise.

Returns:: true if there is a set of legal values.

hasMinValue

boolean hasMinValue()

Returns true if this parameter has a specified minimal value, or false otherwise.

Returns:: true if there is a minimum value.

hasMaxValue

boolean hasMaxValue()

Returns true if this parameter has a specified maximal value, or false otherwise.

Returns:: true if there is a maximum value.

isValue

boolean isValue(Object obj)

Tests whether obj is a valid value for the parameter described by this OpenMBeanParameterInfo instance.

Parameters:: obj - the object to be tested.
Returns:: true if obj is a valid value for the parameter described by this OpenMBeanParameterInfo instance, false otherwise.

equals

boolean equals(Object obj)

Compares the specified obj parameter with this OpenMBeanParameterInfo instance for equality.

Returns true if and only if all of the following statements are true:

obj is non null,
obj also implements the OpenMBeanParameterInfo interface,
their names are equal
their open types are equal
their default, min, max and legal values are equal.

This ensures that this equals method works properly for obj parameters which are different implementations of the OpenMBeanParameterInfo interface.

Overrides:: equals in class Object

Parameters:: obj - the object to be compared for equality with this OpenMBeanParameterInfo instance;
Returns:: true if the specified object is equal to this OpenMBeanParameterInfo instance.
See Also:: Object.hashCode(), Hashtable

hashCode

int hashCode()

Returns the hash code value for this OpenMBeanParameterInfo instance.

The hash code of an OpenMBeanParameterInfo instance is the sum of the hash codes of all elements of information used in equals comparisons (ie: its name, its open type, and its default, min, max and legal values).

This ensures that t1.equals(t2) implies that t1.hashCode()==t2.hashCode() for any two OpenMBeanParameterInfo instances t1 and t2, as required by the general contract of the method Object.hashCode().

Overrides:: hashCode in class Object

Returns:: the hash code value for this OpenMBeanParameterInfo instance
See Also:: Object.equals(java.lang.Object), Hashtable

toString

String toString()

Returns a string representation of this OpenMBeanParameterInfo instance.

The string representation consists of the name of this class (ie javax.management.openmbean.OpenMBeanParameterInfo), the string representation of the name and open type of the described parameter, and the string representation of its default, min, max and legal values.

Overrides:: toString in class Object

Returns:: a string representation of this OpenMBeanParameterInfo instance