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Posted to dev@struts.apache.org by dg...@apache.org on 2003/07/09 04:37:20 UTC
cvs commit: jakarta-struts/src/share/org/apache/struts/tiles ComponentDefinition.java
dgraham 2003/07/08 19:37:20
Modified: src/share/org/apache/struts/tiles ComponentDefinition.java
Log:
Formatted code.
Revision Changes Path
1.8 +483 -493 jakarta-struts/src/share/org/apache/struts/tiles/ComponentDefinition.java
Index: ComponentDefinition.java
===================================================================
RCS file: /home/cvs/jakarta-struts/src/share/org/apache/struts/tiles/ComponentDefinition.java,v
retrieving revision 1.7
retrieving revision 1.8
diff -u -r1.7 -r1.8
--- ComponentDefinition.java 17 Apr 2003 03:51:12 -0000 1.7
+++ ComponentDefinition.java 9 Jul 2003 02:37:20 -0000 1.8
@@ -59,7 +59,6 @@
*
*/
-
package org.apache.struts.tiles;
import java.io.Serializable;
@@ -68,6 +67,7 @@
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
+import org.apache.struts.tiles.xmlDefinition.XmlDefinition;
import org.apache.struts.util.RequestUtils;
/**
@@ -75,403 +75,397 @@
* Attributes of a component can be defined with the help of this class.
* An instance of this class can be used as a bean, and passed to 'insert' tag.
*/
-public class ComponentDefinition implements Serializable
-{
- /** Commons Logging instance. */
- protected static Log log = LogFactory.getLog(ComponentDefinition.class);
-
- /**
- * Definition name
- */
- protected String name;
-
- /**
- * Component / template path (URL).
- */
- protected String path;
-
- /**
- * Attributes defined for the component.
- */
- protected Map attributes;
- /** role associated to definition */
- protected String role;
+public class ComponentDefinition implements Serializable {
+
+ /**
+ * Commons Logging instance.
+ */
+ protected static Log log = LogFactory.getLog(ComponentDefinition.class);
+
+ /**
+ * Definition name
+ */
+ protected String name = null;
+
+ /**
+ * Component / template path (URL).
+ */
+ protected String path = null;
+
+ /**
+ * Attributes defined for the component.
+ */
+ protected Map attributes = null;
+
+ /**
+ * Role associated to definition.
+ */
+ protected String role = null;
/** Associated Controller URL or classname, if defined */
- protected String controller;
- /** Associated Controller typename, if controllerName defined.
- * Can be CONTROLLER, ACTION or URL, or null */
- protected String controllerType;
-
- /** Controller name type */
- public static final String URL = "url";
- /** Controller name type */
- public static final String CONTROLLER = "controller";
- /** Controller name type */
- public static final String ACTION = "action";
-
- /**
- * Controller associated to Definition.
- * Lazy creation : only on first request
- */
- private Controller controllerInstance;
-
- /**
- * Constructor.
- */
- public ComponentDefinition()
- {
- attributes = new HashMap();
- }
-
- /**
- * Copy Constructor.
- * Create a new definition initialized with parent definition.
- * Do a shallow copy : attributes are shared between copies, but not the Map
- * containing attributes.
- */
- public ComponentDefinition( ComponentDefinition definition )
- {
- attributes = new HashMap( definition.getAttributes() );
- this.name = definition.getName();
- this.path = definition.getPath();
- this.role = definition.getRole();
- this.controllerInstance = definition.getControllerInstance();
- this.controller = definition.getController();
- this.controllerType = definition.getControllerType();
- }
-
- /**
- * Constructor.
- * Create a new definition initialized from a RawDefinition.
- * Raw definitions are used to read definition from a data source (xml file, db, ...).
- * A RawDefinition mainly contains properties of type String, while Definition
- * contains more complex type (ex : Controller).
- * Do a shallow copy : attributes are shared between objects, but not the Map
- * containing attributes.
- * OO Design issues : Actually RawDefinition (XmlDefinition) extends ComponentDefinition.
- * This must not be the case. I have do it because I am lazy.
- * @throws InstantiationException if an error occur while instanciating Controller :
- * (classname can't be instanciated, Illegal access with instanciated class,
- * Error while instanciating class, classname can't be instanciated.
- */
- public ComponentDefinition( org.apache.struts.tiles.xmlDefinition.XmlDefinition definition )
- {
- this((ComponentDefinition)definition);
- }
-
-
- /**
- * Constructor.
- */
- public ComponentDefinition( String name, String path, Map attributes )
- {
- this.name = name;
- this.path = path;
- this.attributes = attributes;
- }
-
- /**
-* Access method for the name property.
-*
-* @return the current value of the name property
- */
- public String getName() {
- return name;}
-
- /**
-* Sets the value of the name property.
-*
-* @param aName the new value of the name property
- */
- public void setName(String aName) {
- name = aName;}
-
- /**
- * Access method for the path property.
- *
- * @return the current value of the path property
- */
- public String getPage()
- {
- return path;
- }
-
- /**
- * Sets the value of the path property.
- *
- * @param aPath the new value of the path property
- */
- public void setPage(String page)
- {
- path = page;
- }
-
- /**
- * Access method for the path property.
- *
- * @return the current value of the path property
- */
- public String getPath()
- {
- return path;
- }
-
- /**
- * Sets the value of the path property.
- *
- * @param aPath the new value of the path property
- */
- public void setPath(String aPath)
- {
- path = aPath;
- }
-
- /**
- * Access method for the template property.
- * Same as getPath()
- * @return the current value of the template property
- */
- public String getTemplate()
- {
- return path;
- }
-
- /**
- * Sets the value of the template property.
- * Same as setPath()
- *
- * @param template the new value of the path property
- */
- public void setTemplate(String template)
- {
- path = template;
- }
-
- /**
- * Access method for the role property.
- * @return the current value of the role property
- */
- public String getRole()
- {
- return role;
- }
-
- /**
- * Sets the value of the role property.
- *
- * @param role the new value of the path property
- */
- public void setRole(String role)
- {
- this.role = role;
- }
-
- /**
- * Access method for the attributes property.
- * If there is no attributes, return an empty map.
- * @return the current value of the attributes property
- */
- public Map getAttributes()
- {
- return attributes;
- }
-
- /**
- * Returns the value of the named attribute as an Object, or null if no
- * attribute of the given name exists.
- *
- * @return requested attribute or null if not found
- */
- public Object getAttribute(String key)
- {
- return attributes.get( key);
- }
-
- /**
- * Put a new attribute in this component
- *
- * @param key String key for attribute
- * @param value Attibute value.
- */
- public void putAttribute(String key, Object value)
- {
- attributes.put( key, value );
- }
-
- /**
- * Put an attribute in component / template definition.
- * Attribute can be used as content for tag get.
- * @param name Attribute name
- * @param content Attribute value
- */
- public void put(String name, Object content)
- {
- put(name, content, false, null );
- }
-
- /**
- * Put an attribute in template definition.
- * Attribute can be used as content for tag get.
- * @param name Attribute name
- * @param content Attribute value �
- * @param direct Determines how content is handled by get tag: true means content is printed directly; false, the default, means content is included
- */
- public void put(String name, Object content, boolean direct)
- {
- put(name, content, direct, null );
- }
-
- /**
- * Put an attribute in template definition.
- * Attribute can be used as content for tag get.
- * @param name Attribute name
- * @param content Attribute value
- * @param direct Determines how content is handled by get tag: true means content is printed directly; false, the default, means content is included
- * @param role Determine if content is used by get tag. If user is in role, content is used.
- */
- public void put(String name, Object content, boolean direct, String role)
- {
- if( direct == true )
- { // direct String
- put( name, content, "string", role );
- }
- else
- {
- put( name, content, "template", role );
- } // end if
-
- }
-
- /**
- * Put an attribute in template definition.
- * Attribute can be used as content for tag get.
- * @param name Attribute name
- * @param content Attribute value
- * @param type attribute type: template, string, definition
- * @param role Determine if content is used by get tag. If user is in role, content is used.
- */
- public void put(String name, Object content, String type, String role)
- {
- // Is there a type set ?
- // First check direct attribute, and translate it to a valueType.
- // Then, evaluate valueType, and create requested typed attribute.
- AttributeDefinition attribute = null;
-
- if( content != null && type!=null && !(content instanceof AttributeDefinition) )
- {
- String strValue = content.toString();
- if( type.equalsIgnoreCase( "string" ) )
- {
- attribute = new DirectStringAttribute( strValue );
- }
- else if( type.equalsIgnoreCase( "page" ) )
- {
- attribute = new PathAttribute( strValue );
- }
- else if( type.equalsIgnoreCase( "template" ) )
- {
- attribute = new PathAttribute( strValue );
- }
- else if( type.equalsIgnoreCase( "instance" ) )
- {
- attribute = new DefinitionNameAttribute( strValue );
- }
- else if( type.equalsIgnoreCase( "definition" ) )
- {
- attribute = new DefinitionNameAttribute( strValue );
- } // end if
- } // end if
- putAttribute( name, attribute);
- }
+ protected String controller = null;
+
+ /**
+ * Associated Controller typename, if controllerName defined.
+ * Can be CONTROLLER, ACTION or URL, or null.
+ */
+ protected String controllerType = null;
+
+ /**
+ * Controller name type.
+ */
+ public static final String URL = "url";
+
+ /**
+ * Controller name type.
+ */
+ public static final String CONTROLLER = "controller";
+
+ /**
+ * Controller name type.
+ */
+ public static final String ACTION = "action";
+
+ /**
+ * Controller associated to Definition.
+ * Lazy creation : only on first request
+ */
+ private Controller controllerInstance = null;
+
+ /**
+ * Constructor.
+ */
+ public ComponentDefinition() {
+ attributes = new HashMap();
+ }
+
+ /**
+ * Copy Constructor.
+ * Create a new definition initialized with parent definition.
+ * Do a shallow copy : attributes are shared between copies, but not the Map
+ * containing attributes.
+ */
+ public ComponentDefinition(ComponentDefinition definition) {
+ attributes = new HashMap(definition.getAttributes());
+ this.name = definition.getName();
+ this.path = definition.getPath();
+ this.role = definition.getRole();
+ this.controllerInstance = definition.getControllerInstance();
+ this.controller = definition.getController();
+ this.controllerType = definition.getControllerType();
+ }
+
+ /**
+ * Constructor.
+ * Create a new definition initialized from a RawDefinition.
+ * Raw definitions are used to read definition from a data source (xml file, db, ...).
+ * A RawDefinition mainly contains properties of type String, while Definition
+ * contains more complex type (ex : Controller).
+ * Do a shallow copy : attributes are shared between objects, but not the Map
+ * containing attributes.
+ * OO Design issues : Actually RawDefinition (XmlDefinition) extends ComponentDefinition.
+ * This must not be the case. I have do it because I am lazy.
+ * @throws InstantiationException if an error occur while instanciating Controller :
+ * (classname can't be instanciated, Illegal access with instanciated class,
+ * Error while instanciating class, classname can't be instanciated.
+ */
+ public ComponentDefinition(XmlDefinition definition) {
+
+ this((ComponentDefinition) definition);
+ }
+
+ /**
+ * Constructor.
+ */
+ public ComponentDefinition(String name, String path, Map attributes) {
+ this.name = name;
+ this.path = path;
+ this.attributes = attributes;
+ }
+
+ /**
+ * Access method for the name property.
+ *
+ * @return the current value of the name property
+ */
+ public String getName() {
+ return name;
+ }
+
+ /**
+ * Sets the value of the name property.
+ *
+ * @param aName the new value of the name property
+ */
+ public void setName(String aName) {
+ name = aName;
+ }
+
+ /**
+ * Access method for the path property.
+ *
+ * @return The current value of the path property.
+ */
+ public String getPage() {
+ return path;
+ }
+
+ /**
+ * Sets the value of the path property.
+ *
+ * @param aPath the new value of the path property
+ */
+ public void setPage(String page) {
+ path = page;
+ }
/**
+ * Access method for the path property.
*
+ * @return the current value of the path property
*/
- public String toString()
- {
- return "{name="+ name +
- ", path="+ path +
- ", role="+ role +
- ", controller="+ controller +
- ", controllerType="+ controllerType +
- ", controllerInstance="+ controllerInstance +
- ", attributes=" + attributes + "}\n";
- }
-
- /**
- * Get associated controller type.
- * Type denote a fully qualified classname.
- */
- public String getControllerType()
- {
- return controllerType;
- }
-
- /**
- * Set associated controller type.
- * Type denote a fully qualified classname.
- * @param controllerType Typeof associated controller
- */
- public void setControllerType(String controllerType)
- {
- this.controllerType = controllerType;
- }
-
- /**
- * Set associated controller name as an url, and controller
- * type as "url".
- * Name must be an url (not checked).
- * Convenience method.
- * @param controller Controller url
- */
- public void setControllerUrl(String controller)
- {
- setController( controller);
- setControllerType( "url" );
- }
-
- /**
- * Set associated controller name as a classtype, and controller
- * type as "classname".
- * Name denote a fully qualified classname
- * Convenience method.
- * @param controller Controller classname.
- */
- public void setControllerClass(String controller)
- {
- setController( controller);
- setControllerType( "classname" );
- }
-
- /**
- * Get associated controller local URL.
- * URL should be local to webcontainer in order to allow request context followup.
- * URL comes as a string.
- */
- public String getController()
- {
- return controller;
- }
-
- /**
- * Set associated controller URL.
- * URL should be local to webcontainer in order to allow request context followup.
- * URL is specified as a string.
- * @param url Url called locally
- */
- public void setController(String url)
- {
- this.controller = url;
- }
+ public String getPath() {
+ return path;
+ }
+
+ /**
+ * Sets the value of the path property.
+ *
+ * @param aPath the new value of the path property
+ */
+ public void setPath(String aPath) {
+ path = aPath;
+ }
+
+ /**
+ * Access method for the template property.
+ * Same as getPath()
+ * @return the current value of the template property
+ */
+ public String getTemplate() {
+ return path;
+ }
+
+ /**
+ * Sets the value of the template property.
+ * Same as setPath()
+ *
+ * @param template the new value of the path property
+ */
+ public void setTemplate(String template) {
+ path = template;
+ }
+
+ /**
+ * Access method for the role property.
+ * @return the current value of the role property
+ */
+ public String getRole() {
+ return role;
+ }
+
+ /**
+ * Sets the value of the role property.
+ *
+ * @param role the new value of the path property
+ */
+ public void setRole(String role) {
+ this.role = role;
+ }
+
+ /**
+ * Access method for the attributes property.
+ * If there is no attributes, return an empty map.
+ * @return the current value of the attributes property
+ */
+ public Map getAttributes() {
+ return attributes;
+ }
+
+ /**
+ * Returns the value of the named attribute as an Object, or null if no
+ * attribute of the given name exists.
+ *
+ * @return requested attribute or null if not found
+ */
+ public Object getAttribute(String key) {
+ return attributes.get(key);
+ }
+
+ /**
+ * Put a new attribute in this component
+ *
+ * @param key String key for attribute
+ * @param value Attibute value.
+ */
+ public void putAttribute(String key, Object value) {
+ attributes.put(key, value);
+ }
+
+ /**
+ * Put an attribute in component / template definition.
+ * Attribute can be used as content for tag get.
+ * @param name Attribute name
+ * @param content Attribute value
+ */
+ public void put(String name, Object content) {
+ put(name, content, false, null);
+ }
+
+ /**
+ * Put an attribute in template definition.
+ * Attribute can be used as content for tag get.
+ * @param name Attribute name
+ * @param content Attribute value �
+ * @param direct Determines how content is handled by get tag: true means content is printed directly; false, the default, means content is included
+ */
+ public void put(String name, Object content, boolean direct) {
+ put(name, content, direct, null);
+ }
+
+ /**
+ * Put an attribute in template definition.
+ * Attribute can be used as content for tag get.
+ * @param name Attribute name
+ * @param content Attribute value
+ * @param direct Determines how content is handled by get tag: true means content is printed directly; false, the default, means content is included
+ * @param role Determine if content is used by get tag. If user is in role, content is used.
+ */
+ public void put(String name, Object content, boolean direct, String role) {
+ if (direct == true) { // direct String
+ put(name, content, "string", role);
+ } else {
+ put(name, content, "template", role);
+ }
+
+ }
+
+ /**
+ * Put an attribute in template definition.
+ * Attribute can be used as content for tag get.
+ * @param name Attribute name
+ * @param content Attribute value
+ * @param type attribute type: template, string, definition
+ * @param role Determine if content is used by get tag. If user is in role, content is used.
+ */
+ public void put(String name, Object content, String type, String role) {
+ // Is there a type set ?
+ // First check direct attribute, and translate it to a valueType.
+ // Then, evaluate valueType, and create requested typed attribute.
+ AttributeDefinition attribute = null;
+
+ if (content != null
+ && type != null
+ && !(content instanceof AttributeDefinition)) {
+
+ String strValue = content.toString();
+ if (type.equalsIgnoreCase("string")) {
+ attribute = new DirectStringAttribute(strValue);
+
+ } else if (type.equalsIgnoreCase("page")) {
+ attribute = new PathAttribute(strValue);
+
+ } else if (type.equalsIgnoreCase("template")) {
+ attribute = new PathAttribute(strValue);
+
+ } else if (type.equalsIgnoreCase("instance")) {
+ attribute = new DefinitionNameAttribute(strValue);
+
+ } else if (type.equalsIgnoreCase("definition")) {
+ attribute = new DefinitionNameAttribute(strValue);
+ }
+ }
+
+ putAttribute(name, attribute);
+ }
+
+ /**
+ * Returns a description of the attributes.
+ */
+ public String toString() {
+ return "{name="
+ + name
+ + ", path="
+ + path
+ + ", role="
+ + role
+ + ", controller="
+ + controller
+ + ", controllerType="
+ + controllerType
+ + ", controllerInstance="
+ + controllerInstance
+ + ", attributes="
+ + attributes
+ + "}\n";
+ }
+
+ /**
+ * Get associated controller type.
+ * Type denote a fully qualified classname.
+ */
+ public String getControllerType() {
+ return controllerType;
+ }
+
+ /**
+ * Set associated controller type.
+ * Type denote a fully qualified classname.
+ * @param controllerType Typeof associated controller
+ */
+ public void setControllerType(String controllerType) {
+ this.controllerType = controllerType;
+ }
+
+ /**
+ * Set associated controller name as an url, and controller
+ * type as "url".
+ * Name must be an url (not checked).
+ * Convenience method.
+ * @param controller Controller url
+ */
+ public void setControllerUrl(String controller) {
+ setController(controller);
+ setControllerType("url");
+ }
+
+ /**
+ * Set associated controller name as a classtype, and controller
+ * type as "classname".
+ * Name denote a fully qualified classname
+ * Convenience method.
+ * @param controller Controller classname.
+ */
+ public void setControllerClass(String controller) {
+ setController(controller);
+ setControllerType("classname");
+ }
+
+ /**
+ * Get associated controller local URL.
+ * URL should be local to webcontainer in order to allow request context followup.
+ * URL comes as a string.
+ */
+ public String getController() {
+ return controller;
+ }
+
+ /**
+ * Set associated controller URL.
+ * URL should be local to webcontainer in order to allow request context followup.
+ * URL is specified as a string.
+ * @param url Url called locally
+ */
+ public void setController(String url) {
+ this.controller = url;
+ }
/**
* Get controller instance.
* @return controller instance.
*/
- public Controller getControllerInstance()
- {
- return controllerInstance;
+ public Controller getControllerInstance() {
+ return controllerInstance;
}
/**
@@ -482,116 +476,112 @@
* (classname can't be instanciated, Illegal access with instanciated class,
* Error while instanciating class, classname can't be instanciated.
*/
- public Controller getOrCreateController()
- throws InstantiationException
- {
- if( controllerInstance != null )
- return controllerInstance;
-
- // Do we define a controller ?
- if( controller == null && controllerType == null )
- return null;
-
- // check parameters
- if( controllerType != null && controller == null )
- throw new InstantiationException( "Controller name should be defined if controllerType is set" );
+ public Controller getOrCreateController() throws InstantiationException {
+
+ if (controllerInstance != null) {
+ return controllerInstance;
+ }
+
+ // Do we define a controller ?
+ if (controller == null && controllerType == null) {
+ return null;
+ }
- controllerInstance = createController( controller, controllerType );
+ // check parameters
+ if (controllerType != null && controller == null) {
+ throw new InstantiationException("Controller name should be defined if controllerType is set");
+ }
- return controllerInstance;
+ controllerInstance = createController(controller, controllerType);
+
+ return controllerInstance;
}
/**
* Set controller.
*/
- public void setControllerInstance(Controller controller)
- {
- this.controllerInstance = controller;
- }
-
- /**
- * Create a new instance of controller named in parameter.
- * If controllerType is specified, create controller accordingly.
- * Otherwise, if name denote a classname, create an instance of it. If class is
- * subclass of org.apache.struts.action.Action, wrap controller
- * appropriately.
- * Otherwise, consider name as an url.
- * @param name Controller name (classname, url, ...)
- * @param controllerType Expected Controller type
- * @return org.apache.struts.tiles.Controller
- * @throws InstantiationException if an error occur while instanciating Controller :
- * (classname can't be instanciated, Illegal access with instanciated class,
- * Error while instanciating class, classname can't be instanciated.
- */
- static public Controller createController(String name, String controllerType)
- throws InstantiationException
- {
- if(log.isDebugEnabled())
- log.debug( "Create controller name="+ name+", type=" + controllerType );
- Controller controller = null;
-
- if( controllerType == null )
- { // first try as a classname
- try {
- return createControllerFromClassname(name);
- }
- catch( InstantiationException ex )
- { // ok, try something else
- controller = new UrlController( name );
- }
- }
- else if( "url".equalsIgnoreCase( controllerType ) )
- controller = new UrlController( name );
- else if( "classname".equalsIgnoreCase( controllerType ) )
- controller = createControllerFromClassname( name );
-
- return controller;
- }
-
-
- /**
- * Create a controller from specified classname
- * @param classname Controller classname.
- * @return org.apache.struts.tiles.Controller
- * @throws InstantiationException if an error occur while instanciating Controller :
- * (classname can't be instanciated, Illegal access with instanciated class,
- * Error while instanciating class, classname can't be instanciated.
- */
- static public Controller createControllerFromClassname(String classname)
- throws InstantiationException
- {
- try
- {
- Class requestedClass = RequestUtils.applicationClass(classname);
- Object instance = requestedClass.newInstance();
- /*
- if( instance instanceof org.apache.struts.action.Action )
- { // wrap strutsinstance
- instance = new ActionController( (Action)instance );
- } // end if
- */
- if(log.isDebugEnabled())
- log.debug( "Controller created : " + instance );
- return (Controller)instance;
- }
- catch( java.lang.ClassNotFoundException ex)
- {
- throw new InstantiationException( "Error - Class not found :" + ex.getMessage() );
- }
- catch( java.lang.IllegalAccessException ex)
- {
- throw new InstantiationException( "Error - Illegal class access :" + ex.getMessage() );
- }
- catch( java.lang.InstantiationException ex)
- {
- throw ex;
- }
- catch( java.lang.ClassCastException ex)
- {
- throw new InstantiationException( "Controller of class '" + classname
- + "' should implements 'Controller' or extends 'Action'" );
- }
- }
+ public void setControllerInstance(Controller controller) {
+ this.controllerInstance = controller;
+ }
+ /**
+ * Create a new instance of controller named in parameter.
+ * If controllerType is specified, create controller accordingly.
+ * Otherwise, if name denote a classname, create an instance of it. If class is
+ * subclass of org.apache.struts.action.Action, wrap controller
+ * appropriately.
+ * Otherwise, consider name as an url.
+ * @param name Controller name (classname, url, ...)
+ * @param controllerType Expected Controller type
+ * @return org.apache.struts.tiles.Controller
+ * @throws InstantiationException if an error occur while instanciating Controller :
+ * (classname can't be instanciated, Illegal access with instanciated class,
+ * Error while instanciating class, classname can't be instanciated.
+ */
+ public static Controller createController(String name, String controllerType)
+ throws InstantiationException {
+
+ if (log.isDebugEnabled()) {
+ log.debug("Create controller name=" + name + ", type=" + controllerType);
+ }
+
+ Controller controller = null;
+
+ if (controllerType == null) { // first try as a classname
+ try {
+ return createControllerFromClassname(name);
+
+ } catch (InstantiationException ex) { // ok, try something else
+ controller = new UrlController(name);
+ }
+
+ } else if ("url".equalsIgnoreCase(controllerType)) {
+ controller = new UrlController(name);
+
+ } else if ("classname".equalsIgnoreCase(controllerType)) {
+ controller = createControllerFromClassname(name);
+ }
+
+ return controller;
+ }
+
+ /**
+ * Create a controller from specified classname
+ * @param classname Controller classname.
+ * @return org.apache.struts.tiles.Controller
+ * @throws InstantiationException if an error occur while instanciating Controller :
+ * (classname can't be instanciated, Illegal access with instanciated class,
+ * Error while instanciating class, classname can't be instanciated.
+ */
+ public static Controller createControllerFromClassname(String classname)
+ throws InstantiationException {
+
+ try {
+ Class requestedClass = RequestUtils.applicationClass(classname);
+ Object instance = requestedClass.newInstance();
+
+ if (log.isDebugEnabled()) {
+ log.debug("Controller created : " + instance);
+ }
+ return (Controller) instance;
+
+ } catch (java.lang.ClassNotFoundException ex) {
+ throw new InstantiationException(
+ "Error - Class not found :" + ex.getMessage());
+
+ } catch (java.lang.IllegalAccessException ex) {
+ throw new InstantiationException(
+ "Error - Illegal class access :" + ex.getMessage());
+
+ } catch (java.lang.InstantiationException ex) {
+ throw ex;
+
+ } catch (java.lang.ClassCastException ex) {
+ throw new InstantiationException(
+ "Controller of class '"
+ + classname
+ + "' should implements 'Controller' or extends 'Action'");
+ }
+ }
}
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