org.apache.struts.taglib.logic
Class CompareTagBase

java.lang.Object
  javax.servlet.jsp.tagext.TagSupport
      org.apache.struts.taglib.logic.ConditionalTagBase
          org.apache.struts.taglib.logic.CompareTagBase

All Implemented Interfaces:

Serializable, IterationTag, Tag

Direct Known Subclasses:

EqualTag, GreaterEqualTag, GreaterThanTag, LessEqualTag, LessThanTag, NotEqualTag

public abstract class CompareTagBase
extends ConditionalTagBase

Abstract base class for comparison tags. Concrete subclasses need only define values for desired1 and desired2.

Version:

$Rev: 471754 $ $Date: 2004-10-16 12:38:42 -0400 (Sat, 16 Oct 2004) $

See Also:

Serialized Form

Field Summary

protected static int	DOUBLE_COMPARE We will do a double/float comparison.
protected static int	LONG_COMPARE We will do a long/int comparison.
protected static MessageResources	messages The message resources for this package.
protected static int	STRING_COMPARE We will do a String comparison.
String	value The value to which the variable specified by other attributes of this tag will be compared.

Fields inherited from class org.apache.struts.taglib.logic.ConditionalTagBase

cookie, header, name, parameter, property, role, scope, user

Fields inherited from class javax.servlet.jsp.tagext.TagSupport

id, pageContext

Fields inherited from interface javax.servlet.jsp.tagext.IterationTag

EVAL_BODY_AGAIN

Fields inherited from interface javax.servlet.jsp.tagext.Tag

EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE

Constructor Summary

CompareTagBase()

Method Summary

protected abstract boolean	condition() Evaluate the condition that is being tested by this particular tag, and return true if the nested body content of this tag should be evaluated, or false if it should be skipped.
protected boolean	condition(int desired1, int desired2) Evaluate the condition that is being tested by this particular tag, and return true if the nested body content of this tag should be evaluated, or false if it should be skipped.
String	getValue()
void	release() Release all allocated resources.
void	setValue(String value)

Methods inherited from class org.apache.struts.taglib.logic.ConditionalTagBase

doEndTag, doStartTag, getCookie, getHeader, getName, getParameter, getProperty, getRole, getScope, getUser, setCookie, setHeader, setName, setParameter, setProperty, setRole, setScope, setUser

Methods inherited from class javax.servlet.jsp.tagext.TagSupport

doAfterBody, findAncestorWithClass, getId, getParent, getValue, getValues, removeValue, setId, setPageContext, setParent, setValue

Methods inherited from class java.lang.Object

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

Field Detail

DOUBLE_COMPARE

protected static final int DOUBLE_COMPARE

We will do a double/float comparison.

See Also:

Constant Field Values

LONG_COMPARE

protected static final int LONG_COMPARE

We will do a long/int comparison.

See Also:

Constant Field Values

STRING_COMPARE

protected static final int STRING_COMPARE

We will do a String comparison.

See Also:

Constant Field Values

messages

protected static MessageResources messages

The message resources for this package.

value

public String value

The value to which the variable specified by other attributes of this tag will be compared.

Constructor Detail

CompareTagBase

public CompareTagBase()

Method Detail

getValue

public String getValue()

setValue

public void setValue(String value)

release

public void release()

Release all allocated resources.

Specified by:

release in interface Tag

Overrides:

release in class ConditionalTagBase

condition

protected abstract boolean condition()
                              throws JspException

Evaluate the condition that is being tested by this particular tag, and return true if the nested body content of this tag should be evaluated, or false if it should be skipped. This method must be implemented by concrete subclasses.

Specified by:

condition in class ConditionalTagBase

Throws:

JspException - if a JSP exception occurs

condition

protected boolean condition(int desired1,
                            int desired2)
                     throws JspException

Evaluate the condition that is being tested by this particular tag, and return true if the nested body content of this tag should be evaluated, or false if it should be skipped. This method must be implemented by concrete subclasses.

Parameters:

desired1 - First desired value for a true result (-1, 0, +1)

desired2 - Second desired value for a true result (-1, 0, +1)

Throws:

JspException - if a JSP exception occurs