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This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.

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/*
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package javax.faces.component;

import javax.el.MethodExpression;
import javax.el.ELException;
import javax.el.ELContext;
import javax.el.MethodInfo;
import javax.faces.el.MethodBinding;
import javax.faces.context.FacesContext;
import javax.faces.component.StateHolder;
import javax.el.ExpressionFactory;
import javax.el.ValueExpression;

import java.util.Arrays;
import java.lang.reflect.Method;
import java.io.Serializable;

/**
 * 

Wrap a MethodBinding instance and expose it as a * MethodExpression.

*/ class MethodExpressionMethodBindingAdapter extends MethodExpression implements Serializable, StateHolder { private static final long serialVersionUID = -1822420567946048452L; public MethodExpressionMethodBindingAdapter() {} // for StateHolder private MethodBinding binding = null; MethodExpressionMethodBindingAdapter(MethodBinding binding) { assert(null != binding); this.binding = binding; } // // Methods from MethodExpression // private transient MethodInfo info = null; public MethodInfo getMethodInfo(ELContext context) throws ELException { assert(null != binding); if (context == null) { throw new NullPointerException("ELContext -> null"); } if (null == info) { FacesContext facesContext = (FacesContext) context.getContext(FacesContext.class); if (null != facesContext) { try { //PENDING - we should find a way to provide more information info = new MethodInfo(null, binding.getType(facesContext), null); } catch (Exception e) { throw new ELException(e); } } } return info; } public Object invoke(ELContext context, Object[] params) throws ELException { assert(null != binding); if (context == null) { throw new NullPointerException("ELContext -> null"); } Object result = null; FacesContext facesContext = (FacesContext) context.getContext(FacesContext.class); if (null != facesContext) { try { result = binding.invoke(facesContext, params); } catch (Exception e) { throw new ELException(e); } } return result; } public String getExpressionString() { assert(null != binding); return binding.getExpressionString(); } public boolean isLiteralText() { assert (binding != null); String expr = binding.getExpressionString(); return (!(expr.startsWith("#{") && expr.endsWith("}"))); } public boolean equals(Object other) { if (other == this) { return true; } if (other instanceof MethodExpressionMethodBindingAdapter) { MethodBinding ob = ((MethodExpressionMethodBindingAdapter) other).getWrapped(); return (binding.equals(ob)); } else if (other instanceof MethodExpression) { MethodExpression expression = (MethodExpression) other; // We'll need to do a little leg work to determine // if the MethodBinding is equivalent to the // wrapped MethodExpression String expr = binding.getExpressionString(); int idx = expr.indexOf('.'); String target = expr.substring(0, idx).substring(2); String t = expr.substring(idx + 1); String method = t.substring(0, (t.length() - 1)); FacesContext context = FacesContext.getCurrentInstance(); ELContext elContext = context.getELContext(); MethodInfo controlInfo = expression.getMethodInfo(elContext); // ensure the method names are the same if (!controlInfo.getName().equals(method)) { return false; } // Using the target, create an expression and evaluate // it. ExpressionFactory factory = context.getApplication().getExpressionFactory(); ValueExpression ve = factory.createValueExpression(elContext, "#{" + target + '}', Object.class); if (ve == null) { return false; } Object result = ve.getValue(elContext); if (result == null) { return false; } // Get all of the methods with the matching name and try // to find a match based on controlInfo's return and parameter // types Method[] methods = result.getClass().getMethods(); for (Method meth : methods) { if (meth.getName().equals(method) && meth.getReturnType().equals(controlInfo.getReturnType()) && Arrays.equals(meth.getParameterTypes(), controlInfo.getParamTypes())) { return true; } } } return false; } public int hashCode() { assert(null != binding); return binding.hashCode(); } public String getDelimiterSyntax() { // PENDING (visvan) Implementation return ""; } // // Methods from StateHolder // public Object saveState(FacesContext context) { if (context == null) { throw new NullPointerException(); } Object result = null; if (!tranzient) { if (binding instanceof StateHolder) { Object [] stateStruct = new Object[2]; // save the actual state of our wrapped binding stateStruct[0] = ((StateHolder)binding).saveState(context); // save the class name of the binding impl stateStruct[1] = binding.getClass().getName(); result = stateStruct; } else { result = binding; } } return result; } public void restoreState(FacesContext context, Object state) { if (context == null) { throw new NullPointerException(); } // if we have state if (null == state) { return; } if (!(state instanceof MethodBinding)) { Object [] stateStruct = (Object []) state; Object savedState = stateStruct[0]; String className = stateStruct[1].toString(); MethodBinding result = null; Class toRestoreClass = null; if (null != className) { try { toRestoreClass = loadClass(className, this); } catch (ClassNotFoundException e) { throw new IllegalStateException(e.getMessage()); } if (null != toRestoreClass) { try { result = (MethodBinding) toRestoreClass.newInstance(); } catch (InstantiationException e) { throw new IllegalStateException(e.getMessage()); } catch (IllegalAccessException a) { throw new IllegalStateException(a.getMessage()); } } if (null != result && null != savedState) { // don't need to check transient, since that was // done on the saving side. ((StateHolder)result).restoreState(context, savedState); } binding = result; } } else { binding = (MethodBinding) state; } } private boolean tranzient = false; public boolean isTransient() { return tranzient; } public void setTransient(boolean newTransientMethod) { tranzient = newTransientMethod; } // // Helper methods for StateHolder // private static Class loadClass(String name, Object fallbackClass) throws ClassNotFoundException { ClassLoader loader = Thread.currentThread().getContextClassLoader(); if (loader == null) { loader = fallbackClass.getClass().getClassLoader(); } return Class.forName(name, true, loader); } // // methods used by classes aware of this class's wrapper nature // public MethodBinding getWrapped() { return binding; } }




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