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/*
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 * Copyright 1997-2010 Sun Microsystems, Inc. All rights reserved.
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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
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 * 
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 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
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 * Header, with the fields enclosed by brackets [] replaced by your own
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package com.sun.faces.util;

// DebugUtil.java

import java.io.IOException;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.util.Iterator;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.faces.component.UIComponent;
import javax.faces.component.ValueHolder;
import javax.faces.context.FacesContext;
import javax.faces.model.SelectItem;
import javax.el.ValueExpression;

import com.sun.faces.io.FastStringWriter;
import com.sun.faces.renderkit.RenderKitUtils;

/**
 * DebugUtil is a class ...
 * 

* Lifetime And Scope

*/ public class DebugUtil { // // Protected Constants // // // Class Variables // private static boolean keepWaiting = true; private static int curDepth = 0; // // Instance Variables // // Attribute Instance Variables // Relationship Instance Variables // // Constructors and Initializers // public DebugUtil() { super(); // Util.parameterNonNull(); this.init(); } protected void init() { // super.init(); } // // Class methods // public static void setKeepWaiting(boolean keepWaiting) { DebugUtil.keepWaiting = keepWaiting; } /** * Usage:

*

* Place a call to this method in the earliest possible entry point of * your servlet app. It will cause the app to enter into an infinite * loop, sleeping until the static var keepWaiting is set to false. The * idea is that you attach your debugger to the servlet, then, set a * breakpont in this method. When it is hit, you use the debugger to set * the keepWaiting class var to false. */ public static void waitForDebugger() { while (keepWaiting) { try { Thread.sleep(5000); } catch (InterruptedException e) { System.out.println("DebugUtil.waitForDebugger(): Exception: " + e.getMessage()); } } } private static void indentPrintln(Writer out, String str) { // handle indentation try { for (int i = 0; i < curDepth; i++) { out.write(" "); } out.write(str + "\n"); } catch (IOException ignored) {} } /** * @param root the root component * @return the output of printTree() as a String. * Useful when used with a Logger. For example: * logger.log(DebugUtil.printTree(root)); */ public static String printTree(UIComponent root) { Writer writer = new FastStringWriter(1024); printTree(root, writer); return writer.toString(); } /** * Output of printTree() to a PrintStream. * Usage: * DebugUtil.printTree(root, System.out); * * @param root the root component * @param out the PrintStream to write to */ public static void printTree(UIComponent root, PrintStream out) { PrintWriter writer = new PrintWriter(out); printTree(root, writer); writer.flush(); } public static void printTree(UIComponent root, Logger logger, Level level) { StringWriter sw = new StringWriter(); printTree(root, sw); logger.log(level, sw.toString()); } public static void printTree(UIComponent root, Writer out) { if (null == root) { return; } Object value = null; /* PENDING indentPrintln(out, "===>Type:" + root.getComponentType()); */ indentPrintln(out, "id:" + root.getId()); indentPrintln(out, "type:" + root.getClass().getName()); if (root instanceof javax.faces.component.UISelectOne) { Iterator items = null; try { items = RenderKitUtils.getSelectItems(FacesContext.getCurrentInstance(), root); } catch (Exception e) { // select items couldn't be resolved at this time indentPrintln(out, " { SelectItem(s) not resolvable at this point in time }"); } if (items != null) { indentPrintln(out, " {"); while (items.hasNext()) { SelectItem curItem = items.next(); indentPrintln(out, "\t value = " + curItem.getValue() + ", label = " + curItem.getLabel() + ", description = " + curItem.getDescription()); } indentPrintln(out, " }"); } } else { ValueExpression ve = null; if (root instanceof ValueHolder) { ve = root.getValueExpression("value"); try { value = ((ValueHolder) root).getValue(); } catch (Exception e) { value = "UNAVAILABLE"; } } if (ve != null) { indentPrintln(out, "expression/value = " + ve.getExpressionString() + " : " + value); } else { indentPrintln(out, "value = " + value); } Iterator it = root.getAttributes().keySet().iterator(); if (it != null) { while (it.hasNext()) { String attrName = it.next(); ve = root.getValueExpression(attrName); String expr = null; if (ve != null) { expr = ve.getExpressionString(); } String val; try { val = root.getAttributes().get(attrName).toString(); } catch (Exception e) { val = "UNAVAILABLE"; } if (expr != null) { indentPrintln(out, "attr = " + attrName + " : [" + expr + " : " + val + " ]"); } else { indentPrintln(out, "attr = " + attrName + " : " + val); } } } } curDepth++; Iterator it = root.getChildren().iterator(); // print all the facets of this component for (UIComponent uiComponent : root.getFacets().values()) { printTree(uiComponent, out); } // print all the children of this component while (it.hasNext()) { printTree(it.next(), out); } curDepth--; } public static void simplePrintTree(UIComponent root, String duplicateId, Writer out) { if (null == root) { return; } if (duplicateId.equals(root.getId())) { indentPrintln(out, "+id: " + root.getId() + " <==============="); } else { indentPrintln(out, "+id: " + root.getId()); } indentPrintln(out, " type: " + root.toString()); curDepth++; // print all the facets of this component for (UIComponent uiComponent : root.getFacets().values()) { simplePrintTree(uiComponent, duplicateId, out); } // print all the children of this component for (UIComponent uiComponent : root.getChildren()) { simplePrintTree(uiComponent, duplicateId, out); } curDepth--; } // /** // * Output of printTree() as a String. // * Useful when used with a Logger. For example: // * logger.log(DebugUtil.printTree(root)); // */ // public static String printTree(TreeStructure root) { // Writer writer = new FastStringWriter(1024); // printTree(root, writer); // return writer.toString(); // } // // /** // * Output of printTree() to a PrintStream. // * Usage: // * DebugUtil.printTree(root, System.out); // */ // public static void printTree(TreeStructure root, PrintStream out) { // PrintWriter writer = new PrintWriter(out); // printTree(root, writer); // writer.flush(); // } // // public static void printTree(TreeStructure root, Writer out) { // if (null == root) { // return; // } // int i = 0; // Object value = null; // ///* PENDING // indentPrintln(out, "===>Type:" + root.getComponentType()); //*/ // indentPrintln(out, "id:" + root.id); // indentPrintln(out, "type:" + root.className); // // Iterator items = null; // SelectItem curItem = null; // int j = 0; // // curDepth++; // if (null != root.children) { // Iterator it = root.children.iterator(); // while (it.hasNext()) { // printTree(it.next(), out); // } // } // curDepth--; // } public static void printTree(Object [] root, Writer out) { if (null == root) { indentPrintln(out, "null"); return; } /* PENDING indentPrintln(out, "===>Type:" + root.getComponentType()); */ // drill down to the bottom of the first element in the array boolean foundBottom = false; Object [] myState = root; while (!foundBottom) { Object state = myState[0]; foundBottom = !state.getClass().isArray(); if (!foundBottom) { myState = (Object []) state; } } indentPrintln(out, "type:" + myState[8]); curDepth++; root = (Object []) root[1]; for (int i = 0; i < root.length; i++) { printTree((Object []) root[i], out); } curDepth--; } // // General Methods // } // end of class DebugUtil





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