java.beans
Class IndexedPropertyDescriptor
IndexedPropertyDescriptor describes information about a JavaBean
indexed property, by which we mean an array-like property that
has been exposed via a pair of get and set methods and another
pair that allows you to get to the property by an index.
An example property would have four methods like this:
FooBar[] getFoo()
void setFoo(FooBar[])
FooBar getFoo(int)
void setFoo(int,FooBar)
The constraints put on get and set methods are:
- There must be at least a get(int) or a set(int,...) method.
Nothing else is required. Spec note:One nice restriction
would be that if there is a get() there must be a get(int), same
with set, but that is not in the spec and is fairly harmless.)
- A get array method must have signature
<propertyType>[] <getMethodName>() - A set array method must have signature
void <setMethodName>(<propertyType>[]) - A get index method must have signature
<propertyType> <getMethodName>(int) - A set index method must have signature
void <setMethodName>(int,<propertyType>) - All these methods may throw any exception.
- All these methods must be public.
IndexedPropertyDescriptor(String name, Class beanClass)- Create a new IndexedPropertyDescriptor by introspection.
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IndexedPropertyDescriptor(String name, Class beanClass, String getMethodName, String setMethodName, String getIndexName, String setIndexName)- Create a new IndexedPropertyDescriptor by introspection.
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IndexedPropertyDescriptor(String name, Method getMethod, Method setMethod, Method getIndex, Method setIndex)- Create a new PropertyDescriptor using explicit Methods.
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createPropertyEditor, equals, getPropertyEditorClass, getPropertyType, getReadMethod, getWriteMethod, hashCode, isBound, isConstrained, setBound, setConstrained, setPropertyEditorClass, setReadMethod, setWriteMethod |
attributeNames, getDisplayName, getName, getShortDescription, getValue, isExpert, isHidden, isPreferred, setDisplayName, setExpert, setHidden, setName, setPreferred, setShortDescription, setValue |
clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
IndexedPropertyDescriptor
public IndexedPropertyDescriptor(String name,
Class beanClass)
throws IntrospectionException Create a new IndexedPropertyDescriptor by introspection.
This form of constructor creates the PropertyDescriptor by
looking for getter methods named
get<name>()
and setter methods named
set<name>() in class
<beanClass>, where <name> has its
first letter capitalized by the constructor.
Implementation note: If there is a get(int) method,
then the return type of that method is used to find the
remaining methods. If there is no get method, then the
set(int) method is searched for exhaustively and that type
is used to find the others.
Spec note:
If there is no get(int) method and multiple set(int) methods with
the same name and the correct parameters (different type of course),
then an IntrospectionException is thrown. While Sun's spec
does not state this, it can make Bean behavior different on
different systems (since method order is not guaranteed) and as
such, can be treated as a bug in the spec. I am not aware of
whether Sun's implementation catches this.
name - the programmatic name of the property, usually
starting with a lowercase letter (e.g. fooManChu
instead of FooManChu).beanClass - the class the get and set methods live in.
IndexedPropertyDescriptor
public IndexedPropertyDescriptor(String name,
Class beanClass,
String getMethodName,
String setMethodName,
String getIndexName,
String setIndexName)
throws IntrospectionException Create a new IndexedPropertyDescriptor by introspection.
This form of constructor allows you to specify the
names of the get and set methods to search for.
Implementation note: If there is a get(int) method,
then the return type of that method is used to find the
remaining methods. If there is no get method, then the
set(int) method is searched for exhaustively and that type
is used to find the others.
Spec note:
If there is no get(int) method and multiple set(int) methods with
the same name and the correct parameters (different type of course),
then an IntrospectionException is thrown. While Sun's spec
does not state this, it can make Bean behavior different on
different systems (since method order is not guaranteed) and as
such, can be treated as a bug in the spec. I am not aware of
whether Sun's implementation catches this.
name - the programmatic name of the property, usually
starting with a lowercase letter (e.g. fooManChu
instead of FooManChu).beanClass - the class the get and set methods live in.getMethodName - the name of the get array method.setMethodName - the name of the set array method.getIndexName - the name of the get index method.setIndexName - the name of the set index method.
IndexedPropertyDescriptor
public IndexedPropertyDescriptor(String name,
Method getMethod,
Method setMethod,
Method getIndex,
Method setIndex)
throws IntrospectionException Create a new PropertyDescriptor using explicit Methods.
Note that the methods will be checked for conformance to standard
Property method rules, as described above at the top of this class.
name - the programmatic name of the property, usually
starting with a lowercase letter (e.g. fooManChu
instead of FooManChu).getMethod - the get array method.setMethod - the set array method.getIndex - the get index method.setIndex - the set index method.
IndexedPropertyDescriptor.java --
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