Java Doc for VariableManager.java in  » Wiki-Engine » JSPWiki » com » ecyrd » jspwiki » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Wiki Engine » JSPWiki » com.ecyrd.jspwiki 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   com.ecyrd.jspwiki.VariableManager

VariableManager
public class VariableManager (Code)
Manages variables. Variables are case-insensitive. A list of all available variables is on a Wiki page called "WikiVariables".
author:
   Janne Jalkanen
since:
   1.9.20.


Field Summary
final static  String[]THE_BIG_NO_NO_LIST
     Contains a list of those properties that shall never be shown.
final public static  StringVAR_ERROR
    
final public static  StringVAR_MSG
    

Constructor Summary
public  VariableManager(Properties props)
     Creates a VariableManager object using the property list given.

Method Summary
public  StringexpandVariables(WikiContext context, String source)
     This method does in-place expansion of any variables.
public  StringgetValue(WikiContext context, String varName, String defValue)
     Returns the value of a named variable.
public  StringgetValue(WikiContext context, String varName)
     Returns a value of the named variable.
public static  booleanisVariableLink(String link)
     Returns true if the link is really command to insert a variable.
public  StringparseAndGetValue(WikiContext context, String link)
     Parses the link and finds a value.

Field Detail
THE_BIG_NO_NO_LIST
final static String[] THE_BIG_NO_NO_LIST(Code)
Contains a list of those properties that shall never be shown. Put names here in lower case.



VAR_ERROR
final public static String VAR_ERROR(Code)



VAR_MSG
final public static String VAR_MSG(Code)




Constructor Detail
VariableManager
public VariableManager(Properties props)(Code)
Creates a VariableManager object using the property list given.
Parameters:
  props - The properties.




Method Detail
expandVariables
public String expandVariables(WikiContext context, String source)(Code)
This method does in-place expansion of any variables. However, the expansion is not done twice, that is, a variable containing text $variable will not be expanded.

The variables should be in the same format ({$variablename} as in the web pages.
Parameters:
  context - The WikiContext of the current page.
Parameters:
  source - The source string. The source string with variables expanded.




getValue
public String getValue(WikiContext context, String varName, String defValue)(Code)
Returns the value of a named variable. See VariableManager.getValue(WikiContext,String) . The only difference is that this method does not throw an exception, but it returns the given default value instead.
Parameters:
  context - WikiContext
Parameters:
  varName - The name of the variable
Parameters:
  defValue - A default value. The variable value, or if not found, the default value.



getValue
public String getValue(WikiContext context, String varName) throws IllegalArgumentException, NoSuchVariableException(Code)
Returns a value of the named variable. The resolving order is
  1. Known "constant" name, such as "pagename", etc. This is so that pages could not override certain constants.
  2. WikiContext local variable. This allows a programmer to set a parameter which cannot be overridden by user.
  3. HTTP Session
  4. HTTP Request parameters
  5. WikiPage variable. As set by the user with the SET directive.
  6. jspwiki.properties
Use this method only whenever you really need to have a parameter that can be overridden by anyone using the wiki.
Parameters:
  context - The WikiContext
Parameters:
  varName - Name of the variable. The variable value.
throws:
  IllegalArgumentException - If the name is somehow broken.
throws:
  NoSuchVariableException - If a variable is not known.



isVariableLink
public static boolean isVariableLink(String link)(Code)
Returns true if the link is really command to insert a variable.

Currently we just check if the link starts with "{$".
Parameters:
  link - The link text true, if this represents a variable link.




parseAndGetValue
public String parseAndGetValue(WikiContext context, String link) throws IllegalArgumentException, NoSuchVariableException(Code)
Parses the link and finds a value. This is essentially used once VariableManager.isVariableLink(String) has found that the link text actually contains a variable. For example, you could pass in "{$username}" and get back "JanneJalkanen".
Parameters:
  context - The WikiContext
Parameters:
  link - The link text containing the variable name. The variable value.
throws:
  IllegalArgumentException - If the format is not valid (does not start with "{$", is zero length, etc.)
throws:
  NoSuchVariableException - If a variable is not known.



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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