@Override
public void setValue(ELContext elContext, Object base, Object property, Object value) {
if (elContext == null) {
throw new NullPointerException();
}
if (base != null) {
return;
}
elContext.setPropertyResolved(true);
if (property instanceof String) {
PageContext pageContext = (PageContext) elContext.getContext(JspContext.class);
String attribute = (String) property;
if (pageContext.getAttribute(attribute, PageContext.REQUEST_SCOPE) != null) {
pageContext.setAttribute(attribute, value, PageContext.REQUEST_SCOPE);
} else if (pageContext.getAttribute(attribute, PageContext.SESSION_SCOPE) != null) {
pageContext.setAttribute(attribute, value, PageContext.SESSION_SCOPE);
} else if (pageContext.getAttribute(attribute, PageContext.APPLICATION_SCOPE) != null) {
pageContext.setAttribute(attribute, value, PageContext.APPLICATION_SCOPE);
} else {
pageContext.setAttribute(attribute, value, PageContext.PAGE_SCOPE);
}
}
}
/**
* Set the value of a scoped object for the specified name.
*
* @param context <code>ELContext</code> for evaluating this value
* @param base Base object against which this evaluation occurs (must be null because we are
* evaluating a top level variable)
* @param property Property name to be accessed
* @param value New value to be set
*/
public void setValue(ELContext context, Object base, Object property, Object value) {
if (base != null) {
return;
}
if (property == null) {
throw new PropertyNotFoundException("No property specified");
}
context.setPropertyResolved(true);
String key = property.toString();
Object result = null;
FacesContext fcontext = (FacesContext) context.getContext(FacesContext.class);
ExternalContext econtext = fcontext.getExternalContext();
if (econtext.getRequestMap().containsKey(property)) {
econtext.getRequestMap().put(key, value);
} else if (econtext.getSessionMap().containsKey(property)) {
econtext.getSessionMap().put(key, value);
} else if (econtext.getApplicationMap().containsKey(property)) {
econtext.getApplicationMap().put(key, value);
} else {
econtext.getRequestMap().put(key, value);
}
}
/**
* Return an existing scoped object for the specified name (if any); otherwise, return <code>null
* </code>.
*
* @param context <code>ELContext</code> for evaluating this value
* @param base Base object against which this evaluation occurs (must be null because we are
* evaluating a top level variable)
* @param property Property name to be accessed
*/
public Object getValue(ELContext context, Object base, Object property) {
if (base != null) {
return null;
}
if (property == null) {
throw new PropertyNotFoundException("No property specified");
}
FacesContext fcontext = (FacesContext) context.getContext(FacesContext.class);
ExternalContext econtext = fcontext.getExternalContext();
Object value = null;
value = econtext.getRequestMap().get(property);
if (value != null) {
context.setPropertyResolved(true);
return value;
}
value = econtext.getSessionMap().get(property);
if (value != null) {
context.setPropertyResolved(true);
return value;
}
value = econtext.getApplicationMap().get(property);
if (value != null) {
context.setPropertyResolved(true);
return value;
}
return null;
}
@Override
@SuppressWarnings("deprecation")
public Object getValue(ELContext context, Object base, Object property) throws ELException {
// Don't call into the chain unless it's been decorated.
if (legacyVR instanceof ChainAwareVariableResolver) {
return null;
}
if (base != null) {
return null;
}
if (base == null && property == null) {
String message =
MessageUtils.getExceptionMessageString(
MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "base and property"); // ?????
throw new PropertyNotFoundException(message);
}
context.setPropertyResolved(true);
Object result = null;
FacesContext facesContext = (FacesContext) context.getContext(FacesContext.class);
String propString = property.toString();
Map<String, Object> stateMap = RequestStateManager.getStateMap(facesContext);
try {
// If we are already in the midst of an expression evaluation
// that touched this resolver...
//noinspection unchecked
List<String> varNames = (List<String>) stateMap.get(RequestStateManager.REENTRANT_GUARD);
if (varNames != null && !varNames.isEmpty() && varNames.contains(propString)) {
// take no action and return.
context.setPropertyResolved(false);
return null;
}
// Make sure subsequent calls don't take action.
if (varNames == null) {
varNames = new ArrayList<>();
stateMap.put(RequestStateManager.REENTRANT_GUARD, varNames);
}
varNames.add(propString);
result = legacyVR.resolveVariable(facesContext, propString);
} catch (EvaluationException ex) {
context.setPropertyResolved(false);
throw new ELException(ex);
} finally {
// Make sure to remove the guard after the call returns
//noinspection unchecked
List<String> varNames = (List<String>) stateMap.get(RequestStateManager.REENTRANT_GUARD);
if (varNames != null && !varNames.isEmpty()) {
varNames.remove(propString);
}
// Make sure that the ELContext "resolved" indicator is set
// in accordance wth the result of the resolution.
context.setPropertyResolved(result != null);
}
return result;
}
@Override
public Iterator<FeatureDescriptor> getFeatureDescriptors(ELContext elContext, Object base) {
List<FeatureDescriptor> featureDescriptors = new ArrayList<>();
PageContext pageContext = (PageContext) elContext.getContext(JspContext.class);
Enumeration<?> enumeration = pageContext.getAttributeNamesInScope(PageContext.PAGE_SCOPE);
while (enumeration.hasMoreElements()) {
String name = (String) enumeration.nextElement();
Object value = pageContext.getAttribute(name, PageContext.PAGE_SCOPE);
FeatureDescriptor featureDescriptor = getFeatureDescriptor(name, value, "page");
featureDescriptors.add(featureDescriptor);
}
enumeration = pageContext.getAttributeNamesInScope(PageContext.REQUEST_SCOPE);
while (enumeration.hasMoreElements()) {
String name = (String) enumeration.nextElement();
Object value = pageContext.getAttribute(name, PageContext.REQUEST_SCOPE);
FeatureDescriptor featureDescriptor = getFeatureDescriptor(name, value, "request");
featureDescriptors.add(featureDescriptor);
}
enumeration = pageContext.getAttributeNamesInScope(PageContext.SESSION_SCOPE);
while (enumeration.hasMoreElements()) {
String name = (String) enumeration.nextElement();
Object value = pageContext.getAttribute(name, PageContext.SESSION_SCOPE);
FeatureDescriptor featureDescriptor = getFeatureDescriptor(name, value, "session");
featureDescriptors.add(featureDescriptor);
}
enumeration = pageContext.getAttributeNamesInScope(PageContext.APPLICATION_SCOPE);
while (enumeration.hasMoreElements()) {
String name = (String) enumeration.nextElement();
Object value = pageContext.getAttribute(name, PageContext.APPLICATION_SCOPE);
FeatureDescriptor featureDescriptor = getFeatureDescriptor(name, value, "application");
featureDescriptors.add(featureDescriptor);
}
return featureDescriptors.iterator();
}
/** 返回上下文中唯一的文档对象. */
public static Document getContextDocument(ELContext elctx) {
Document doc = (Document) elctx.getContext(Document.class);
if (doc == null) {
try {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
doc = db.newDocument();
elctx.putContext(Document.class, doc);
} catch (ParserConfigurationException ex) {
throw new ELException(ex);
}
}
return doc;
}
@Override
public Object getValue(ELContext elContext, Object base, Object property) {
if (elContext == null) {
throw new NullPointerException();
}
if (base == null) {
elContext.setPropertyResolved(true);
if (property instanceof String) {
String attribute = (String) property;
PageContext pageContext = (PageContext) elContext.getContext(JspContext.class);
return pageContext.findAttribute(attribute);
}
}
return null;
}
public Object getValue(ELContext context, Object base, Object property) throws ELException {
// variable resolution is a special case of property resolution
// where the base is null.
if (base != null) {
return null;
}
if (property == null) {
String message =
MessageUtils.getExceptionMessageString(
MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "property");
throw new PropertyNotFoundException(message);
}
Integer index = IMPLICIT_OBJECTS.get(property.toString());
if (index == null) {
return null;
}
FacesContext facesContext = (FacesContext) context.getContext(FacesContext.class);
switch (index.intValue()) {
case FACES_CONTEXT:
context.setPropertyResolved(true);
return facesContext;
case VIEW:
context.setPropertyResolved(true);
return facesContext.getViewRoot();
case VIEW_SCOPE:
context.setPropertyResolved(true);
return facesContext.getViewRoot().getViewMap();
case RESOURCE:
context.setPropertyResolved(true);
return facesContext.getApplication().getResourceHandler();
default:
return null;
}
}
@Override
public Object getValue(ELContext context, Object base, Object property) throws ELException {
// variable resolution is a special case of property resolution
// where the base is null.
if (!BridgeUtil.isPortletRequest() || base != null) {
return null;
}
if (property == null) {
throw new PropertyNotFoundException("Null property");
}
FacesContext facesContext = (FacesContext) context.getContext(FacesContext.class);
ExternalContext extCtx = facesContext.getExternalContext();
// only process if running in a portlet request
// Bridge.PortletPhase phase =
// (Bridge.PortletPhase)
// FacesContext.getCurrentInstance().getExternalContext().getRequestMap().get(Bridge.PORTLET_LIFECYCLE_PHASE);
// if (phase == null) {
// return null;
// }
if (PORTLET_CONFIG.equals(property)) {
context.setPropertyResolved(true);
return context.getContext(PortletConfig.class);
} else if (ACTION_REQUEST.equals(property)
&& (BridgeUtil.getPortletRequestPhase() == Bridge.PortletPhase.ACTION_PHASE)) {
context.setPropertyResolved(true);
return extCtx.getRequest();
} else if (ACTION_RESPONSE.equals(property)
&& (BridgeUtil.getPortletRequestPhase() == Bridge.PortletPhase.ACTION_PHASE)) {
context.setPropertyResolved(true);
return extCtx.getResponse();
} else if (RENDER_REQUEST.equals(property)
&& (BridgeUtil.getPortletRequestPhase() == Bridge.PortletPhase.RENDER_PHASE)) {
context.setPropertyResolved(true);
return extCtx.getRequest();
} else if (RENDER_RESPONSE.equals(property)
&& (BridgeUtil.getPortletRequestPhase() == Bridge.PortletPhase.RENDER_PHASE)) {
context.setPropertyResolved(true);
return extCtx.getResponse();
} else if (EVENT_REQUEST.equals(property)
&& (BridgeUtil.getPortletRequestPhase() == Bridge.PortletPhase.EVENT_PHASE)) {
context.setPropertyResolved(true);
return extCtx.getRequest();
} else if (EVENT_RESPONSE.equals(property)
&& (BridgeUtil.getPortletRequestPhase() == Bridge.PortletPhase.EVENT_PHASE)) {
context.setPropertyResolved(true);
return extCtx.getResponse();
} else if (RESOURCE_REQUEST.equals(property)
&& (BridgeUtil.getPortletRequestPhase() == Bridge.PortletPhase.RESOURCE_PHASE)) {
context.setPropertyResolved(true);
return extCtx.getRequest();
} else if (RESOURCE_RESPONSE.equals(property)
&& (BridgeUtil.getPortletRequestPhase() == Bridge.PortletPhase.RESOURCE_PHASE)) {
context.setPropertyResolved(true);
return extCtx.getResponse();
} else if (SESSION_APPLICATION_SCOPE.equals(property) || HTTP_SESSION_SCOPE.equals(property)) {
context.setPropertyResolved(true);
if (mAppScopeSessionMap == null) {
Object request = extCtx.getRequest();
// Object portletLifecycleAttr = extCtx.getRequestMap().get(Bridge.PORTLET_LIFECYCLE_PHASE);
if (BridgeUtil.isPortletRequest()) {
mAppScopeSessionMap = new PortletApplicationScopeSessionMap((PortletRequest) request);
}
}
return mAppScopeSessionMap;
} else if (SESSION_PORTLET_SCOPE.equals(property) || PORTLET_SESSION_SCOPE.equals(property)) {
context.setPropertyResolved(true);
return extCtx.getSessionMap();
} else if (PORTLET_SESSION.equals(property)) {
context.setPropertyResolved(true);
return extCtx.getSession(false);
} else if (PORTLET_PREFERENCE_VALUE.equals(property)) {
context.setPropertyResolved(true);
return getPreferencesValueMap(facesContext);
} else if (PORTLET_PREFERENCES.equals(property)) {
context.setPropertyResolved(true);
return ((PortletRequest) extCtx.getRequest()).getPreferences();
} else if (MUTABLE_PORTLET_PREFERENCES_VALUES.equals(property)) {
context.setPropertyResolved(true);
return getPreferenceMap(((PortletRequest) extCtx.getRequest()).getPreferences());
} else {
return null;
}
// }
}
/**
* Return an <code>Iterator</code> over the attributes that this resolver knows how to deal with.
*
* @param context <code>ELContext</code> for evaluating this value
* @param base Base object against which this evaluation occurs
*/
public Iterator getFeatureDescriptors(ELContext context, Object base) {
if (base != null) {
return null;
}
// Create the variables we will need
FacesContext fcontext = (FacesContext) context.getContext(FacesContext.class);
ExternalContext econtext = fcontext.getExternalContext();
List descriptors = new ArrayList();
Map map = null;
Set set = null;
Iterator items = null;
String key = null;
Object value = null;
// Add feature descriptors for request scoped attributes
set = econtext.getRequestMap().entrySet();
items = set.iterator();
while (items.hasNext()) {
Entry item = (Entry) items.next();
key = (String) item.getKey();
value = item.getValue();
descriptors.add(
descriptor(
key,
key,
"Request Scope Attribute " + key,
false,
false,
true,
value.getClass(),
true));
}
// Add feature descriptors for session scoped attributes
set = econtext.getSessionMap().entrySet();
items = set.iterator();
while (items.hasNext()) {
Entry item = (Entry) items.next();
key = (String) item.getKey();
value = item.getValue();
descriptors.add(
descriptor(
key,
key,
"Session Scope Attribute " + key,
false,
false,
true,
value.getClass(),
true));
}
// Add feature descriptors for application scoped attributes
set = econtext.getApplicationMap().entrySet();
items = set.iterator();
while (items.hasNext()) {
Entry item = (Entry) items.next();
key = (String) item.getKey();
value = item.getValue();
descriptors.add(
descriptor(
key,
key,
"Application Scope Attribute " + key,
false,
false,
true,
value.getClass(),
true));
}
// Return the accumulated descriptors
return descriptors.iterator();
}
public static ClassResolver getInstance(ELContext context) {
ClassResolver cr = (ClassResolver) context.getContext(ClassResolver.class);
if (cr == null) context.putContext(ClassResolver.class, cr = new ClassResolver());
return cr;
}