atg.droplet

Class Tag

java.lang.Object

javax.servlet.GenericServlet

atg.droplet.Tag

All Implemented Interfaces:

java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

Direct Known Subclasses:

ComplexTag, FormEventReceiver

public class Tag
extends javax.servlet.GenericServlet

This class implements a simple generic HTML tag. This class can either serve as a base class for other HTML tags or can be used to represent any simple HTML tag directly.

To render an input tag you can use: Tag t = new Tag(); t.setTagName("input"); t.setAttribute("type", "submit"); t.setAttribute("value", "Submit"); t.service(request, response);

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	CLASS_VERSION Class version string

Constructor Summary

Constructors

Constructor and Description
Tag()

Method Summary

Modifier and Type	Method and Description
java.lang.Object	getAttribute(java.lang.String pName) Returns the value of the specified attribute.
java.util.Dictionary	getAttributes() Returns the Attributes dictionary for this tag.
java.lang.String	getTagName() Returns the name of this tag or null if no name has been specified.
void	service(DynamoHttpServletRequest pReq, DynamoHttpServletResponse pRes) Renders the tag for the given request.
void	service(javax.servlet.ServletRequest pReq, javax.servlet.ServletResponse pRes) Vector off service requests to the dynamo specific routine.
protected void	serviceAttributes(DynamoHttpServletRequest pReq, DynamoHttpServletResponse pRes) Renders the attributes defined for this tag.
void	setAttribute(java.lang.String pName, java.lang.Object pValue) Sets the value of a specific attribute in the Attributes dictionary.
void	setAttributes(java.util.Dictionary pAttributes) This sets the "Attributes" property for the Tag.
void	setTagName(java.lang.String pTagName) Sets the name of this tag.

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

CLASS_VERSION

public static java.lang.String CLASS_VERSION

Class version string

Constructor Detail

Tag

public Tag()

Method Detail

setTagName

public void setTagName(java.lang.String pTagName)

Sets the name of this tag.

Parameters:

pTagName - the name of the tag.

getTagName

public java.lang.String getTagName()

Returns the name of this tag or null if no name has been specified.

setAttributes

public void setAttributes(java.util.Dictionary pAttributes)

This sets the "Attributes" property for the Tag. This contains a Dictionary of attribute values that are defined at runtime for the tag object.

Parameters:

pAttributes - the attributes dictionary.

getAttributes

public java.util.Dictionary getAttributes()

Returns the Attributes dictionary for this tag.

setAttribute

public void setAttribute(java.lang.String pName,
                         java.lang.Object pValue)

Sets the value of a specific attribute in the Attributes dictionary.

Parameters:

pName - The name of the attribute

pValue - the value of the attribute. If this value is null, the attribute is deleted. If the attribute is an empty string, the attribute displayed without the "=" sign.

getAttribute

public java.lang.Object getAttribute(java.lang.String pName)

Returns the value of the specified attribute.

service

public void service(javax.servlet.ServletRequest pReq,
                    javax.servlet.ServletResponse pRes)
             throws javax.servlet.ServletException,
                    java.io.IOException

Vector off service requests to the dynamo specific routine. We need to encode URLs for dynamo requests

Specified by:

service in interface javax.servlet.Servlet

Specified by:

service in class javax.servlet.GenericServlet

Throws:

javax.servlet.ServletException

java.io.IOException

service

public void service(DynamoHttpServletRequest pReq,
                    DynamoHttpServletResponse pRes)
             throws javax.servlet.ServletException,
                    java.io.IOException

Renders the tag for the given request. This method assumes that all attributes defined for the tag are in the Attributes dictionary property. Subclasses can also override this method if they want to define their property values more efficiently as member variables.

Throws:

javax.servlet.ServletException

java.io.IOException

serviceAttributes

protected void serviceAttributes(DynamoHttpServletRequest pReq,
                                 DynamoHttpServletResponse pRes)
                          throws javax.servlet.ServletException,
                                 java.io.IOException

Renders the attributes defined for this tag. Subclasses can use this method to display the attributes in the Attributes dictionary in their service method.

Throws:

javax.servlet.ServletException

java.io.IOException