File	Doc	Category	Size	Date	Package
MBeanAttributeInfo.java	API Doc	Java SE 5 API	8072	Fri Aug 26 14:57:32 BST 2005	javax.management

MBeanAttributeInfo

• java.lang.Object
  • javax.management.MBeanFeatureInfo

Fields Summary
private static final long	serialVersionUID
static final MBeanAttributeInfo[]	NO_ATTRIBUTES
private final String	attributeType
private final boolean	isWrite
private final boolean	isRead
private final boolean	is

Constructors Summary
public MBeanAttributeInfo(String name, String type, String description, boolean isReadable, boolean isWritable, boolean isIs) Constructs an MBeanAttributeInfo object. param name The name of the attribute. param type The type or class name of the attribute. param description A human readable description of the attribute. param isReadable True if the attribute has a getter method, false otherwise. param isWritable True if the attribute has a setter method, false otherwise. param isIs True if this attribute has an "is" getter, false otherwise. super(name, description); this.attributeType = type; this.isRead= isReadable; this.isWrite = isWritable; if (isIs && !isReadable) { throw new IllegalArgumentException("Cannot have an \"is\" getter for a non-readable attribute."); } if (isIs && (!type.equals("java.lang.Boolean") && (!type.equals("boolean")))) { throw new IllegalArgumentException("Cannot have an \"is\" getter for a non-boolean attribute."); } this.is = isIs;
public MBeanAttributeInfo(String name, String description, Method getter, Method setter) This constructor takes the name of a simple attribute, and Method objects for reading and writing the attribute. param name The programmatic name of the attribute. param description A human readable description of the attribute. param getter The method used for reading the attribute value. May be null if the property is write-only. param setter The method used for writing the attribute value. May be null if the attribute is read-only. exception IntrospectionException There is a consistency problem in the definition of this attribute. this(name, attributeType(getter, setter), description, (getter != null), (setter != null), isIs(getter));

Methods Summary
private static java.lang.String	attributeType(java.lang.reflect.Method getter, java.lang.reflect.Method setter) Finds the type of the attribute. Class type = null; if (getter != null) { if (getter.getParameterTypes().length != 0) { throw new IntrospectionException("bad getter arg count"); } type = getter.getReturnType(); if (type == Void.TYPE) { throw new IntrospectionException("getter " + getter.getName() + " returns void"); } } if (setter != null) { Class params[] = setter.getParameterTypes(); if (params.length != 1) { throw new IntrospectionException("bad setter arg count"); } if (type == null) type = params[0]; else if (type != params[0]) { throw new IntrospectionException("type mismatch between " + "getter and setter"); } } if (type == null) { throw new IntrospectionException("getter and setter cannot " + "both be null"); } return type.getName();
public java.lang.Object	clone() Returns a shallow clone of this instance. The clone is obtained by simply calling super.clone(), thus calling the default native shallow cloning mechanism implemented by Object.clone(). No deeper cloning of any internal field is made. Since this class is immutable, cloning is chiefly of interest to subclasses. try { return super.clone() ; } catch (CloneNotSupportedException e) { // should not happen as this class is cloneable return null; }
public boolean	equals(java.lang.Object o) Compare this MBeanAttributeInfo to another. param o the object to compare to. return true iff o is an MBeanAttributeInfo such that its {@link #getName()}, {@link #getType()}, {@link #getDescription()}, {@link #isReadable()}, {@link #isWritable()}, and {@link #isIs()} values are equal (not necessarily identical) to those of this MBeanAttributeInfo. if (o == this) return true; if (!(o instanceof MBeanAttributeInfo)) return false; MBeanAttributeInfo p = (MBeanAttributeInfo) o; return (p.getName().equals(getName()) && p.getType().equals(getType()) && p.getDescription().equals(getDescription()) && p.isReadable() == isReadable() && p.isWritable() == isWritable() && p.isIs() == isIs());
public java.lang.String	getType() Returns the class name of the attribute. return the class name. return attributeType;
public int	hashCode() return getName().hashCode() ^ getType().hashCode();
private static boolean	isIs(java.lang.reflect.Method getter) return (getter != null && getter.getName().startsWith("is") && (getter.getReturnType().equals(Boolean.TYPE) || getter.getReturnType().equals(Boolean.class)));
public boolean	isIs() Indicates if this attribute has an "is" getter. return true if this attribute has an "is" getter. return is;
public boolean	isReadable() Whether the value of the attribute can be read. return True if the attribute can be read, false otherwise. return isRead;
public boolean	isWritable() Whether new values can be written to the attribute. return True if the attribute can be written to, false otherwise. return isWrite;