Package com.sun.faces.el

Class ELUtils

  • public class ELUtils
extends java.lang.Object

    Utility class for EL related methods.

    • Field Detail

      • ARRAY_RESOLVER

        public static final javax.el.ArrayELResolver ARRAY_RESOLVER

      • BEAN_RESOLVER

        public static final javax.el.BeanELResolver BEAN_RESOLVER

      • FACES_BUNDLE_RESOLVER

        public static final com.sun.faces.el.FacesResourceBundleELResolver FACES_BUNDLE_RESOLVER

      • IMPLICIT_JSP_RESOLVER

        public static final com.sun.faces.el.ImplicitObjectELResolverForJsp IMPLICIT_JSP_RESOLVER

      • IMPLICIT_RESOLVER

        public static final com.sun.faces.el.ImplicitObjectELResolver IMPLICIT_RESOLVER

      • FLASH_RESOLVER

        public static final com.sun.faces.context.flash.FlashELResolver FLASH_RESOLVER

      • LIST_RESOLVER

        public static final javax.el.ListELResolver LIST_RESOLVER

      • MANAGED_BEAN_RESOLVER

        public static final com.sun.faces.el.ManagedBeanELResolver MANAGED_BEAN_RESOLVER

      • MAP_RESOLVER

        public static final javax.el.MapELResolver MAP_RESOLVER

      • BUNDLE_RESOLVER

        public static final javax.el.ResourceBundleELResolver BUNDLE_RESOLVER

      • SCOPED_RESOLVER

        public static final com.sun.faces.el.ScopedAttributeELResolver SCOPED_RESOLVER

      • RESOURCE_RESOLVER

        public static final com.sun.faces.el.ResourceELResolver RESOURCE_RESOLVER

      • COMPOSITE_COMPONENT_ATTRIBUTES_EL_RESOLVER

        public static final com.sun.faces.el.CompositeComponentAttributesELResolver COMPOSITE_COMPONENT_ATTRIBUTES_EL_RESOLVER

    • Method Detail

      • isCompositeComponentExpr

        public static boolean isCompositeComponentExpr​(java.lang.String expression)

      • isCompositeComponentMethodExprLookup

        public static boolean isCompositeComponentMethodExprLookup​(java.lang.String expression)

      • isCompositeComponentLookupWithArgs

        public static boolean isCompositeComponentLookupWithArgs​(java.lang.String expression)

      • buildFacesResolver

        public static void buildFacesResolver​(com.sun.faces.el.FacesCompositeELResolver composite,
                                      com.sun.faces.application.ApplicationAssociate associate)

        Create the ELResolver chain for programmatic EL calls.

        Parameters:
        composite - a CompositeELResolver
        associate - our ApplicationAssociate

      • buildJSPResolver

        public static void buildJSPResolver​(com.sun.faces.el.FacesCompositeELResolver composite,
                                    com.sun.faces.application.ApplicationAssociate associate)

        Create the ELResolver chain for JSP.

        Parameters:
        composite - a CompositeELResolver
        associate - our ApplicationAssociate

      • evaluateValueExpression

        public static java.lang.Object evaluateValueExpression​(javax.el.ValueExpression expression,
                                                       javax.el.ELContext elContext)

      • getDelegatePR

        public static javax.faces.el.PropertyResolver getDelegatePR​(com.sun.faces.application.ApplicationAssociate associate,
                                                            boolean provideDefault)
        Parameters:
        associate - the ApplicationAssociate
        provideDefault - whether or not to return a DummpyPropertyResolverImpl
        Returns:
        the PropertyResolvers set via Application.setPropertyResolver(javax.faces.el.PropertyResolver) or, if that is null, return the PropertyResolver chain from the parsed configuration resources. If either of those are null, and provideDefault is true, return the DummyPropertyResolverImpl.

      • getDelegateVR

        public static javax.faces.el.VariableResolver getDelegateVR​(com.sun.faces.application.ApplicationAssociate associate,
                                                            boolean provideDefault)
        Parameters:
        associate - the ApplicationAssociate
        provideDefault - whether or not to return a DummpyPropertyResolverImpl
        Returns:
        the VariableResolvers set via Application.setVariableResolver(javax.faces.el.VariableResolver) or, if that is null, return the VariableResolver chain from the parsed configuration resources. If either of those are null, , and provideDefault is true, return the ChainAwareVariableResolver.

      • getExpressionsFromString

        public static java.util.List<java.lang.String> getExpressionsFromString​(java.lang.String expressionString)
                                                                 throws javax.faces.el.ReferenceSyntaxException
        Parameters:
        expressionString - the expression string, with delimiters intact.
        Returns:
        a List of expressions from the expressionString
        Throws:
        javax.faces.el.ReferenceSyntaxException - if the expression string is invalid

      • getScope

        public static ELUtils.Scope getScope​(java.lang.String valueBinding,
                                     java.lang.String[] outString)
                              throws javax.faces.el.ReferenceSyntaxException

        This method is used by the ManagedBeanFactory to ensure that properties set by an expression point to an object with an accepted lifespan.

        get the scope of the expression. Return null if it isn't scoped

        For example, the expression: sessionScope.TestBean.one should return "session" as the scope.

        Parameters:
        valueBinding - the expression
        outString - an allocated String Array into which we put the first segment.
        Returns:
        the scope of the expression
        Throws:
        javax.faces.el.ReferenceSyntaxException - if valueBinding is syntactically invalid

      • createValueExpression

        public static javax.el.ValueExpression createValueExpression​(java.lang.String expression)
        Create a ValueExpression with the expected type of Object.class
        Parameters:
        expression - an EL expression
        Returns:
        a new ValueExpression instance based off the provided valueRef

      • createValueExpression

        public static javax.el.ValueExpression createValueExpression​(java.lang.String expression,
                                                             java.lang.Class<?> expectedType)

      • coerce

        public static java.lang.Object coerce​(java.lang.Object value,
                                      java.lang.Class<?> toType)

      • getScope

        public static ELUtils.Scope getScope​(java.lang.String scope)

      • getScopeForExpression

        public static ELUtils.Scope getScopeForExpression​(java.lang.String expression)

      • hasValidLifespan

        public static boolean hasValidLifespan​(ELUtils.Scope expressionScope,
                                       ELUtils.Scope beanScope)
                                throws javax.faces.el.EvaluationException
        Throws:
        javax.faces.el.EvaluationException

      • getScopeForSingleExpression

        public static ELUtils.Scope getScopeForSingleExpression​(java.lang.String value)
                                                 throws javax.faces.el.EvaluationException
        Throws:
        javax.faces.el.EvaluationException

      • getNarrowestScopeFromExpression

        public static ELUtils.Scope getNarrowestScopeFromExpression​(java.lang.String expression)
                                                     throws javax.faces.el.ReferenceSyntaxException
        Throws:
        javax.faces.el.ReferenceSyntaxException

      • isScopeValid

        public static boolean isScopeValid​(java.lang.String scopeName)

      • getDefaultExpressionFactory

        public static javax.el.ExpressionFactory getDefaultExpressionFactory​(javax.faces.context.FacesContext facesContext)

      • getDefaultExpressionFactory

        public static javax.el.ExpressionFactory getDefaultExpressionFactory​(com.sun.faces.application.ApplicationAssociate associate,
                                                                     javax.faces.context.FacesContext facesContext)