Package javax.faces.component.search

Class SearchExpressionHandlerWrapper

java.lang.Object

javax.faces.component.search.SearchExpressionHandler

javax.faces.component.search.SearchExpressionHandlerWrapper

All Implemented Interfaces:

FacesWrapper<SearchExpressionHandler>

public abstract class SearchExpressionHandlerWrapper
extends SearchExpressionHandler
implements FacesWrapper<SearchExpressionHandler>

Provides a simple implementation of SearchExpressionHandler that can be subclassed by developers wishing to provide specialized behavior to an existing SearchExpressionHandler instance. The default implementation of all methods is to call through to the wrapped SearchExpressionHandler instance. Usage: extend this class and push the implementation being wrapped to the constructor and use getWrapped() to access the instance being wrapped.

Since:

2.3

Field Summary

Fields inherited from class javax.faces.component.search.SearchExpressionHandler

EXPRESSION_SEPARATOR_CHARS, KEYWORD_PREFIX

Constructor Summary

Constructors

Constructor	Description
SearchExpressionHandlerWrapper(SearchExpressionHandler wrapped)	If this search expression handler has been decorated, the implementation doing the decorating should push the implementation being wrapped to this constructor.

Method Summary

Modifier and Type	Method	Description
char[]	getExpressionSeperatorChars(FacesContext context)	Return the characters used to separate expressions in a series of expressions.
SearchExpressionHandler	getWrapped()	A class that implements this interface uses this method to return an instance of the class being wrapped.
void	invokeOnComponent(SearchExpressionContext searchExpressionContext, String expression, ContextCallback callback)	Resolves multiple UIComponents for the given expression.
void	invokeOnComponent(SearchExpressionContext searchExpressionContext, UIComponent previous, String expression, ContextCallback callback)	Resolves multiple UIComponents for the given expression.
boolean	isPassthroughExpression(SearchExpressionContext searchExpressionContext, String expression)	Checks if the given expression is a "passtrough expression".
boolean	isValidExpression(SearchExpressionContext searchExpressionContext, String expression)	Checks if the given expression is a valid expression.
String	resolveClientId(SearchExpressionContext searchExpressionContext, String expression)	Resolves to a single clientId or passthrough expression for the given expression.
List<String>	resolveClientIds(SearchExpressionContext searchExpressionContext, String expressions)	Resolves to a List with clientIds or passthrough expressions for the given expressions.
void	resolveComponent(SearchExpressionContext searchExpressionContext, String expression, ContextCallback callback)	Resolves a single UIComponents for the given expression.
void	resolveComponents(SearchExpressionContext searchExpressionContext, String expressions, ContextCallback callback)	Resolves multiple UIComponents for the given expression(s).
String[]	splitExpressions(FacesContext context, String expressions)	Splits an string, based on SearchExpressionHandler.getExpressionSeperatorChars(javax.faces.context.FacesContext) with possible multiple expressions into an array.

Methods inherited from class java.lang.Object

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

Constructor Details

SearchExpressionHandlerWrapper

public SearchExpressionHandlerWrapper(SearchExpressionHandler wrapped)

If this search expression handler has been decorated, the implementation doing the decorating should push the implementation being wrapped to this constructor. The getWrapped() will then return the implementation being wrapped.

Parameters:

wrapped - The implementation being wrapped.

Since:

2.3

Method Details

getWrapped

public SearchExpressionHandler getWrapped()

Description copied from interface: FacesWrapper

A class that implements this interface uses this method to return an instance of the class being wrapped.

Specified by:

getWrapped in interface FacesWrapper<SearchExpressionHandler>

Returns:

the wrapped instance.

resolveClientId

public String resolveClientId(SearchExpressionContext searchExpressionContext,
 String expression)

Description copied from class: SearchExpressionHandler

Resolves to a single clientId or passthrough expression for the given expression.

Specified by:

resolveClientId in class SearchExpressionHandler

Parameters:

searchExpressionContext - the SearchExpressionContext

expression - the search expression

Returns:

The resolved clientId or passtrough expression. If the expression can not be resolved and if SearchExpressionHint.IGNORE_NO_RESULT was passed, null will be returned.

resolveClientIds

public List<String> resolveClientIds(SearchExpressionContext searchExpressionContext,
 String expressions)

Description copied from class: SearchExpressionHandler

Resolves to a List with clientIds or passthrough expressions for the given expressions. The expressions will be splitted by SearchExpressionHandler.splitExpressions(javax.faces.context.FacesContext, java.lang.String) and resolved one by one.

Specified by:

resolveClientIds in class SearchExpressionHandler

Parameters:

searchExpressionContext - the SearchExpressionContext

expressions - the search expressions

Returns:

The resolved clientIds and passtrough expressions.

resolveComponent

public void resolveComponent(SearchExpressionContext searchExpressionContext,
 String expression,
 ContextCallback callback)

Description copied from class: SearchExpressionHandler

Resolves a single UIComponents for the given expression. If the component is resolved, the ContextCallback will be invoked.

Specified by:

resolveComponent in class SearchExpressionHandler

Parameters:

searchExpressionContext - the SearchExpressionContext

expression - the search expression

callback - the callback for the resolved component

resolveComponents

public void resolveComponents(SearchExpressionContext searchExpressionContext,
 String expressions,
 ContextCallback callback)

Description copied from class: SearchExpressionHandler

Resolves multiple UIComponents for the given expression(s). The expressions will be splitted by SearchExpressionHandler.splitExpressions(javax.faces.context.FacesContext, java.lang.String) and resolved one by one. For each resolved component, the ContextCallback will be invoked.

Specified by:

resolveComponents in class SearchExpressionHandler

Parameters:

searchExpressionContext - the SearchExpressionContext

expressions - the search expression(s)

callback - the callback for each resolved component

invokeOnComponent

public void invokeOnComponent(SearchExpressionContext searchExpressionContext,
 String expression,
 ContextCallback callback)

Description copied from class: SearchExpressionHandler

Resolves multiple UIComponents for the given expression. For each resolved component, the ContextCallback will be invoked. This method is the most essential method in the API. It implements the algorithm which handles the recursion of the keywords and id's.

Overrides:

invokeOnComponent in class SearchExpressionHandler

Parameters:

searchExpressionContext - the SearchExpressionContext

expression - the search expression

callback - the callback for the resolved component

invokeOnComponent

public void invokeOnComponent(SearchExpressionContext searchExpressionContext,
 UIComponent previous,
 String expression,
 ContextCallback callback)

Description copied from class: SearchExpressionHandler

Resolves multiple UIComponents for the given expression. For each resolved component, the ContextCallback will be invoked. This method is the most essential method in the API. It implements the algorithm which handles the recursion of the keywords and id's.

Specified by:

invokeOnComponent in class SearchExpressionHandler

Parameters:

searchExpressionContext - the SearchExpressionContext

previous - The previous resolved component, that will be the base for searching

expression - the search expression

callback - the callback for the resolved component

isValidExpression

public boolean isValidExpression(SearchExpressionContext searchExpressionContext,
 String expression)

Description copied from class: SearchExpressionHandler

Checks if the given expression is a valid expression.

A expression is invalid if:

• No SearchKeywordResolver matches the requested keyword
• A keyword or id is placed after a leaf keyword (@none:@form)

Specified by:

isValidExpression in class SearchExpressionHandler

Parameters:

searchExpressionContext - the SearchExpressionContext

expression - the expression

Returns:

If the given expression is a valid expression

isPassthroughExpression

public boolean isPassthroughExpression(SearchExpressionContext searchExpressionContext,
 String expression)

Description copied from class: SearchExpressionHandler

Checks if the given expression is a "passtrough expression". A passthrough expression must only be a keyword. This keyword will not be resolved by the SearchKeywordResolver and will be returned untouched. The client is responsible to resolve it later.

Specified by:

isPassthroughExpression in class SearchExpressionHandler

Parameters:

searchExpressionContext - the SearchExpressionContext

expression - the expression

Returns:

If the given expression is a passtrough expression

splitExpressions

public String[] splitExpressions(FacesContext context,
 String expressions)

Description copied from class: SearchExpressionHandler

Splits an string, based on SearchExpressionHandler.getExpressionSeperatorChars(javax.faces.context.FacesContext) with possible multiple expressions into an array.

Specified by:

splitExpressions in class SearchExpressionHandler

Parameters:

context - the FacesContext for the current request

expressions - The expressions as string

Returns:

the expression(s) as array

getExpressionSeperatorChars

public char[] getExpressionSeperatorChars(FacesContext context)

Description copied from class: SearchExpressionHandler

Return the characters used to separate expressions in a series of expressions. The default implementation returns SearchExpressionHandler.EXPRESSION_SEPARATOR_CHARS.

Overrides:

getExpressionSeperatorChars in class SearchExpressionHandler

Parameters:

context - the FacesContext for the current request

Returns:

the separator chars