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java.lang.Object
|
+--org.apache.struts.action.ActionForm
|
+--org.apache.struts.action.DynaActionForm
Specialized subclass of ActionForm that allows the creation
of form beans with dynamic sets of properties, without requiring the
developer to create a Java class for each type of form bean.
USAGE NOTE - Since Struts 1.1, the
reset() method no longer initializes property values to those
specified in <form-property> elements in the Struts
module configuration file. If you wish to utilize that behavior, the
simplest solution is to subclass DynaActionForm and call
the initialize() method inside it.
| Field Summary | |
protected DynaActionFormClass |
dynaClass
The DynaActionFormClass with which we are associated. |
protected java.util.HashMap |
dynaValues
The set of property values for this DynaActionForm, keyed by property name. |
| Fields inherited from class org.apache.struts.action.ActionForm |
multipartRequestHandler, servlet |
| Constructor Summary | |
DynaActionForm()
|
|
| Method Summary | |
boolean |
contains(java.lang.String name,
java.lang.String key)
Indicates if the specified mapped property contain a value for the specified key value. |
java.lang.Object |
get(java.lang.String name)
Return the value of a simple property with the specified name. |
java.lang.Object |
get(java.lang.String name,
int index)
Return the value of an indexed property with the specified name. |
java.lang.Object |
get(java.lang.String name,
java.lang.String key)
Return the value of a mapped property with the specified name, or null if there is no value for the specified key. |
org.apache.commons.beanutils.DynaClass |
getDynaClass()
Return the DynaClass instance that describes the set of
properties available for this DynaBean. |
protected org.apache.commons.beanutils.DynaProperty |
getDynaProperty(java.lang.String name)
Return the property descriptor for the specified property name. |
java.util.Map |
getMap()
Returns the Map containing the property values. |
void |
initialize(ActionMapping mapping)
Initialize all bean properties to their initial values, as specified in the FormPropertyConfig elements associated with the
definition of this DynaActionForm. |
protected boolean |
isDynaAssignable(java.lang.Class dest,
java.lang.Class source)
Indicates if an object of the source class is assignable to the destination class. |
void |
remove(java.lang.String name,
java.lang.String key)
Remove any existing value for the specified key on the specified mapped property. |
void |
reset(ActionMapping mapping,
javax.servlet.http.HttpServletRequest request)
Reset all bean properties to their default state. |
void |
reset(ActionMapping mapping,
javax.servlet.ServletRequest request)
Reset all bean properties to their default state. |
void |
set(java.lang.String name,
int index,
java.lang.Object value)
Set the value of an indexed property with the specified name. |
void |
set(java.lang.String name,
java.lang.Object value)
Set the value of a simple property with the specified name. |
void |
set(java.lang.String name,
java.lang.String key,
java.lang.Object value)
Set the value of a mapped property with the specified name. |
(package private) void |
setDynaActionFormClass(DynaActionFormClass dynaClass)
Set the DynaActionFormClass instance that we are associated with. |
java.lang.String |
toString()
Render a String representation of this object. |
| Methods inherited from class org.apache.struts.action.ActionForm |
getMultipartRequestHandler, getServlet, getServletWrapper, setMultipartRequestHandler, setServlet, validate, validate |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Field Detail |
protected DynaActionFormClass dynaClass
protected java.util.HashMap dynaValues
| Constructor Detail |
public DynaActionForm()
| Method Detail |
public void initialize(ActionMapping mapping)
Initialize all bean properties to their initial values, as specified
in the FormPropertyConfig elements associated with the
definition of this DynaActionForm.
mapping - The mapping used to select this instance
public void reset(ActionMapping mapping,
javax.servlet.ServletRequest request)
Reset all bean properties to their default state. This method is called before the properties are repopulated by the controller servlet.
The default implementation attempts to forward to the HTTP version of this method.
reset in class ActionFormmapping - The mapping used to select this instancerequest - The servlet request we are processing
public void reset(ActionMapping mapping,
javax.servlet.http.HttpServletRequest request)
Reset all bean properties to their default state. This method is called before the properties are repopulated by the controller servlet.
The default implementation (since Struts 1.1) does nothing.
Subclasses may override this method to reset bean properties to
default values, or the initialize() method may be used to
initialize property values to those provided in the form property
configuration information (which was the previous behavior of
this method).
reset in class ActionFormmapping - The mapping used to select this instancerequest - The servlet request we are processing
public boolean contains(java.lang.String name,
java.lang.String key)
contains in interface org.apache.commons.beanutils.DynaBeanname - Name of the property to checkkey - Name of the key to check
java.lang.IllegalArgumentException - if there is no property
of the specified namepublic java.lang.Object get(java.lang.String name)
get in interface org.apache.commons.beanutils.DynaBeanname - Name of the property whose value is to be retrieved
java.lang.IllegalArgumentException - if there is no property
of the specified name
java.lang.NullPointerException - if the type specified for the
property is invalid
public java.lang.Object get(java.lang.String name,
int index)
get in interface org.apache.commons.beanutils.DynaBeanname - Name of the property whose value is to be retrievedindex - Index of the value to be retrieved
java.lang.IllegalArgumentException - if there is no property
of the specified name
java.lang.IllegalArgumentException - if the specified property
exists, but is not indexed
java.lang.IndexOutOfBoundsException - if the specified index
is outside the range of the underlying property
java.lang.NullPointerException - if no array or List has been
initialized for this property
public java.lang.Object get(java.lang.String name,
java.lang.String key)
null if there is no value for the specified key.
get in interface org.apache.commons.beanutils.DynaBeanname - Name of the property whose value is to be retrievedkey - Key of the value to be retrieved
java.lang.IllegalArgumentException - if there is no property
of the specified name
java.lang.IllegalArgumentException - if the specified property
exists, but is not mappedpublic org.apache.commons.beanutils.DynaClass getDynaClass()
DynaClass instance that describes the set of
properties available for this DynaBean.
getDynaClass in interface org.apache.commons.beanutils.DynaBeanpublic java.util.Map getMap()
Map containing the property values. This is
done mostly to facilitate accessing the DynaActionForm
through JavaBeans accessors, in order to use the JavaServer Pages
Standard Tag Library.
For instance, the normal JSTL EL syntax for accessing an
ActionForm would be something like this:
${formbean.prop}
The JSTL EL syntax for accessing a DynaActionForm looks
something like this (because of the presence of this
getMap() method):
${dynabean.map.prop}
public void remove(java.lang.String name,
java.lang.String key)
remove in interface org.apache.commons.beanutils.DynaBeanname - Name of the property for which a value is to
be removedkey - Key of the value to be removed
java.lang.IllegalArgumentException - if there is no property
of the specified name
public void set(java.lang.String name,
java.lang.Object value)
set in interface org.apache.commons.beanutils.DynaBeanname - Name of the property whose value is to be setvalue - Value to which this property is to be set
org.apache.commons.beanutils.ConversionException - if the specified value cannot be
converted to the type required for this property
java.lang.IllegalArgumentException - if there is no property
of the specified name
java.lang.NullPointerException - if the type specified for the
property is invalid
java.lang.NullPointerException - if an attempt is made to set a
primitive property to null
public void set(java.lang.String name,
int index,
java.lang.Object value)
set in interface org.apache.commons.beanutils.DynaBeanname - Name of the property whose value is to be setindex - Index of the property to be setvalue - Value to which this property is to be set
org.apache.commons.beanutils.ConversionException - if the specified value cannot be
converted to the type required for this property
java.lang.IllegalArgumentException - if there is no property
of the specified name
java.lang.IllegalArgumentException - if the specified property
exists, but is not indexed
java.lang.IndexOutOfBoundsException - if the specified index
is outside the range of the underlying property
public void set(java.lang.String name,
java.lang.String key,
java.lang.Object value)
set in interface org.apache.commons.beanutils.DynaBeanname - Name of the property whose value is to be setkey - Key of the property to be setvalue - Value to which this property is to be set
org.apache.commons.beanutils.ConversionException - if the specified value cannot be
converted to the type required for this property
java.lang.IllegalArgumentException - if there is no property
of the specified name
java.lang.IllegalArgumentException - if the specified property
exists, but is not mappedpublic java.lang.String toString()
toString in class java.lang.Objectvoid setDynaActionFormClass(DynaActionFormClass dynaClass)
dynaClass - The DynaActionFormClass instance for this beanprotected org.apache.commons.beanutils.DynaProperty getDynaProperty(java.lang.String name)
name - Name of the property for which to retrieve the descriptor
java.lang.IllegalArgumentException - if this is not a valid property
name for our DynaClass
protected boolean isDynaAssignable(java.lang.Class dest,
java.lang.Class source)
dest - Destination classsource - Source class
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