1 files changed, 154 insertions, 0 deletions
diff --git a/jsf/plugins/org.eclipse.jst.jsf.core/src/org/eclipse/jst/jsf/designtime/el/DefaultDTVariableResolver.java b/jsf/plugins/org.eclipse.jst.jsf.core/src/org/eclipse/jst/jsf/designtime/el/DefaultDTVariableResolver.java
new file mode 100644
index 000000000..c77e9121e
--- /dev/null
+++ b/jsf/plugins/org.eclipse.jst.jsf.core/src/org/eclipse/jst/jsf/designtime/el/DefaultDTVariableResolver.java
@@ -0,0 +1,154 @@
+/*******************************************************************************
+ * Copyright (c) 2006 Oracle Corporation.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Cameron Bateman/Oracle - initial API and implementation
+ *    
+ ********************************************************************************/
+
+package org.eclipse.jst.jsf.designtime.el;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.eclipse.core.runtime.IAdaptable;
+import org.eclipse.jst.jsf.context.symbol.ISymbol;
+import org.eclipse.jst.jsf.context.symbol.source.ISymbolConstants;
+import org.eclipse.jst.jsf.designtime.context.DTFacesContext;
+import org.eclipse.jst.jsf.designtime.context.IDTExternalContext;
+import org.eclipse.jst.jsf.designtime.symbols.DefaultBeanSymbolSourceProvider;
+import org.eclipse.jst.jsf.designtime.symbols.DefaultBuiltInSymbolProvider;
+
+/**
+ * A design time proxy for the runtime VariableResolver.  This is used to
+ * resolve the first element of a var.prop.prop2 type of sub-expression in
+ * a JSF EL expression
+ * 
+ * Clients may sub-class
+ *  
+ * @author cbateman
+ *
+ */
+public class DefaultDTVariableResolver extends AbstractDTVariableResolver
+{
+    /**
+     * Tries to mirror the JSF 1.1 runtime VariableResolver
+     * 
+     * @see org.eclipse.jst.jsf.designtime.el.AbstractDTVariableResolver#resolveVariable(org.eclipse.jst.jsf.designtime.context.DTFacesContext, java.lang.String, org.eclipse.core.runtime.IAdaptable)
+     */
+    public ISymbol resolveVariable(DTFacesContext context, String name, IAdaptable externalContextKey)
+    {
+        // check implicits first
+        final DefaultBuiltInSymbolProvider builtins =
+            DefaultBuiltInSymbolProvider.getInstance();
+        
+        ISymbol  symbol = builtins.getSymbol(name, externalContextKey, ISymbolConstants.SYMBOL_SCOPE_ALL);
+        
+        if (symbol != null)
+        {
+            return symbol;
+        }
+        
+        // next check the scope maps from request up to application
+        final IDTExternalContext externalContext = 
+            context.getDTExternalContext(externalContextKey);
+        
+        if (externalContext == null)
+        {
+            // TODO: try to find bean here?
+            return null;
+        }
+        
+        symbol = (ISymbol) externalContext.getRequestMap().get(name);
+        
+        // check request scope
+        if (symbol == null)
+        {
+            symbol = (ISymbol) externalContext.getSessionMap().get(name);
+            
+            // then check session scope
+            if (symbol == null)
+            {
+                symbol = (ISymbol) externalContext.getApplicationMap().get(name);
+                
+                // if the symbol is not found at any scope, then look for a
+                // a bean.
+                if (symbol == null)
+                {
+                    final DefaultBeanSymbolSourceProvider beanProvider =
+                        DefaultBeanSymbolSourceProvider.getInstance();
+                    
+                    symbol = beanProvider.getSymbol(name, externalContextKey, 
+                                             ISymbolConstants.SYMBOL_SCOPE_ALL);
+                }
+            }
+        }
+        
+        return symbol;
+    }
+    
+    /**
+     * @param facesContext
+     * @param externalContextKey
+     * @return all variables
+     */
+    public ISymbol[] getAllVariables(DTFacesContext facesContext, 
+                                     IAdaptable externalContextKey)
+    {
+        final List  allSymbols = new ArrayList();
+
+        addBuiltins(allSymbols, externalContextKey);
+
+        final IDTExternalContext externalContext =  
+            facesContext.getDTExternalContext(externalContextKey);
+
+        if (externalContext != null)
+        {
+            addExternalContextSymbols(allSymbols, externalContext);
+        }
+
+        addBeanSymbols(allSymbols, externalContextKey);
+        
+        return (ISymbol[]) allSymbols.toArray(ISymbol.EMPTY_SYMBOL_ARRAY);
+    }
+        
+    private void addBuiltins(final List list, final IAdaptable externalContextKey)
+    {
+        // check implicits first
+        final DefaultBuiltInSymbolProvider builtins =
+            DefaultBuiltInSymbolProvider.getInstance();
+
+        list.addAll(Arrays.asList(builtins.getSymbols(externalContextKey, 
+                                     ISymbolConstants.SYMBOL_SCOPE_ALL)));
+    }
+    
+    private void addExternalContextSymbols(final List list, 
+                                           final IDTExternalContext externalContext)
+    {
+        if (externalContext != null)
+        {
+            final ISymbol[] externalContextSymbols =
+                    (ISymbol[]) externalContext.getMapForScope
+                          (ISymbolConstants.SYMBOL_SCOPE_ALL).values().
+                                            toArray(ISymbol.EMPTY_SYMBOL_ARRAY);
+            list.addAll(Arrays.asList(externalContextSymbols));
+        }
+    }
+
+    private void addBeanSymbols(final List list, final IAdaptable externalContextKey)
+    {
+        final DefaultBeanSymbolSourceProvider beanProvider =
+            DefaultBeanSymbolSourceProvider.getInstance();
+
+        final ISymbol[] beanSymbols = 
+            beanProvider.getSymbols(externalContextKey, 
+                                    ISymbolConstants.SYMBOL_SCOPE_ALL);
+
+        list.addAll(Arrays.asList(beanSymbols));
+    }
+}