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PrimeFaces is one of the most popular UI libraries in Java EE Ecosystem and widely used by software companies, world renowned brands, banks, financial institutions, insurance companies, universities and more.
/**
* The MIT License
*
* Copyright (c) 2009-2019 PrimeTek
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package org.primefaces.expression;
import java.util.HashMap;
import javax.faces.FacesException;
import org.primefaces.expression.impl.AllExpressionResolver;
import org.primefaces.expression.impl.ChildExpressionResolver;
import org.primefaces.expression.impl.CompositeExpressionResolver;
import org.primefaces.expression.impl.FormExpressionResolver;
import org.primefaces.expression.impl.FindComponentExpressionResolver;
import org.primefaces.expression.impl.IdExpressionResolver;
import org.primefaces.expression.impl.JQuerySelectorExpressionResolver;
import org.primefaces.expression.impl.NamingContainerExpressionResolver;
import org.primefaces.expression.impl.NextExpressionResolver;
import org.primefaces.expression.impl.NoneExpressionResolver;
import org.primefaces.expression.impl.ParentExpressionResolver;
import org.primefaces.expression.impl.PreviousExpressionResolver;
import org.primefaces.expression.impl.RootExpressionResolver;
import org.primefaces.expression.impl.RowExpressionResolver;
import org.primefaces.expression.impl.ThisExpressionResolver;
import org.primefaces.expression.impl.WidgetVarExpressionResolver;
/**
* Factory for providing different {@link SearchExpressionResolver} for expressions.
*/
public class SearchExpressionResolverFactory {
private static final HashMap RESOLVER_MAPPING = new HashMap<>();
private static final FindComponentExpressionResolver FIND_COMPONENT_EXPRESSION_RESOLVER = new FindComponentExpressionResolver();
static {
RESOLVER_MAPPING.put(SearchExpressionConstants.THIS_KEYWORD, new ThisExpressionResolver());
RESOLVER_MAPPING.put(SearchExpressionConstants.COMPOSITE_KEYWORD, new CompositeExpressionResolver());
RESOLVER_MAPPING.put(SearchExpressionConstants.PARENT_KEYWORD, new ParentExpressionResolver());
RESOLVER_MAPPING.put(SearchExpressionConstants.FORM_KEYWORD, new FormExpressionResolver());
RESOLVER_MAPPING.put(SearchExpressionConstants.ALL_KEYWORD, new AllExpressionResolver());
RESOLVER_MAPPING.put(SearchExpressionConstants.NAMINGCONTAINER_KEYWORD, new NamingContainerExpressionResolver());
RESOLVER_MAPPING.put(SearchExpressionConstants.NONE_KEYWORD, new NoneExpressionResolver());
RESOLVER_MAPPING.put(SearchExpressionConstants.NEXT_KEYWORD, new NextExpressionResolver());
RESOLVER_MAPPING.put(SearchExpressionConstants.PREVIOUS_KEYWORD, new PreviousExpressionResolver());
RESOLVER_MAPPING.put(SearchExpressionConstants.CHILD_KEYWORD, new ChildExpressionResolver());
RESOLVER_MAPPING.put(SearchExpressionConstants.WIDGETVAR_KEYWORD, new WidgetVarExpressionResolver());
RESOLVER_MAPPING.put(SearchExpressionConstants.KEYWORD_PREFIX, new JQuerySelectorExpressionResolver());
RESOLVER_MAPPING.put(SearchExpressionConstants.ROW_KEYWORD, new RowExpressionResolver());
RESOLVER_MAPPING.put(SearchExpressionConstants.ID_KEYWORD, new IdExpressionResolver());
RESOLVER_MAPPING.put(SearchExpressionConstants.ROOT_KEYWORD, new RootExpressionResolver());
}
/*
* Prevent instantiation.
*/
private SearchExpressionResolverFactory() {
}
/**
* Finds a {@link SearchExpressionResolver} for the given expression.
*
* @param expression The search expression.
* @return The {@link SearchExpressionResolver}.
*/
public static SearchExpressionResolver findResolver(final String expression) {
SearchExpressionResolver resolver = null;
if (expression.startsWith(SearchExpressionConstants.KEYWORD_PREFIX)) {
// check if it's an expression with parameter
int parenthesisPosition = expression.indexOf('(');
if (parenthesisPosition > 0) {
String expressionWithoutParam = expression.substring(0, parenthesisPosition);
resolver = RESOLVER_MAPPING.get(expressionWithoutParam);
}
else {
resolver = RESOLVER_MAPPING.get(expression);
}
}
else {
// if it's not a keyword, just delegate it to JSF
resolver = FIND_COMPONENT_EXPRESSION_RESOLVER;
}
if (resolver == null) {
throw new FacesException("No SearchExpressionResolver available for expression \"" + expression + "\"");
}
return resolver;
}
public static void registerResolver(final String keyword, final SearchExpressionResolver resolver) {
RESOLVER_MAPPING.put(keyword, resolver);
}
public static SearchExpressionResolver removeResolver(final String keyword) {
return RESOLVER_MAPPING.remove(keyword);
}
}