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package javax.faces.component.search;
import java.util.Set;
import javax.faces.FactoryFinder;
import javax.faces.component.UIComponent;
import javax.faces.component.visit.VisitHint;
import javax.faces.context.FacesContext;
/**
* A context object that is used to hold
* state relating to resolve a search expression.
*
* @see SearchExpressionHandler
*
* @since 2.3
*/
public abstract class SearchExpressionContext {
/**
* Returns the source / base component from which we will start to perform our search.
*
* @return the source component.
*
* @since 2.3
*/
public abstract UIComponent getSource();
/**
* Returns hints that influence the behavior of the tree visit,
* if it's used by an {@link SearchKeywordResolver} implementation.
*
* @return a non-empty, unmodifiable collection of {@link VisitHint}s
*
* @since 2.3
* @see javax.faces.component.visit.VisitContext#getHints()
*/
public abstract Set getVisitHints();
/**
* Returns hints that influence the behavior of resolving the expression.
*
* @return a non-empty, unmodifiable collection of {@link SearchExpressionHint}s
*
* @since 2.3
*/
public abstract Set getExpressionHints();
/**
* Returns the FacesContext for the
* current request.
*
* @return the FacesContext.
*
* @since 2.3
*/
public abstract FacesContext getFacesContext();
/**
* Creates a {@link SearchExpressionContext} instance
* for use with the {@link SearchExpressionHandler}.
* This method can be used to obtain a SearchExpressionContext instance
* without any {@link VisitHint} or {@link SearchExpressionHint}.
*
* @param context the FacesContext for the current request
* @param source the source / base component from which we will start to perform our search.
*
* @return a {@link SearchExpressionContext} instance
*
* @since 2.3
*/
public static SearchExpressionContext createSearchExpressionContext(FacesContext context, UIComponent source) {
return createSearchExpressionContext(context, source, null, null);
}
/**
* Creates a {@link SearchExpressionContext} instance
* for use with the {@link SearchExpressionHandler}.
*
* @param context the FacesContext for the current request
* @param source the source / base component from which we will start to perform our search.
* @param expressionHints the SearchExpressionHint to apply to the search.
* If null
, no hints are applied.
* @param visitHints the VisitHints to apply to the visit, if used by a {@link SearchKeywordResolver}.
* If null
, no hints are applied.
*
* @return a {@link SearchExpressionContext} instance
*
* @since 2.3
*/
public static SearchExpressionContext createSearchExpressionContext(FacesContext context, UIComponent source,
Set expressionHints, Set visitHints) {
SearchExpressionContextFactory factory
= (SearchExpressionContextFactory) FactoryFinder.getFactory(FactoryFinder.SEARCH_EXPRESSION_CONTEXT_FACTORY);
return factory.getSearchExpressionContext(context, source, expressionHints, visitHints);
}
}