001/*****************************************************************************
002 * Copyright (C) PicoContainer Organization. All rights reserved.            *
003 * ------------------------------------------------------------------------- *
004 * The software in this package is published under the terms of the BSD      *
005 * style license a copy of which has been included with this distribution in *
006 * the LICENSE.txt file.                                                     *
007 *                                                                           *
008 * Original code by Paul Hammaant                                            *
009 *****************************************************************************/
010
011package org.picocontainer.monitors;
012
013import java.text.MessageFormat;
014import java.lang.reflect.Constructor;
015import java.lang.reflect.Method;
016import java.lang.reflect.Field;
017import java.lang.reflect.Member;
018
019import org.picocontainer.ComponentMonitor;
020
021/**
022 * An abstract {@link ComponentMonitor} which supports all the message formats.
023 * 
024 * @author Mauro Talevi
025 */
026public final class ComponentMonitorHelper  {
027
028    public final static String INSTANTIATING = "PicoContainer: instantiating {0}";
029    public final static String INSTANTIATED = "PicoContainer: instantiated {0} [{1} ms], component {2}, injected [{3}]";
030    public final static String INSTANTIATION_FAILED = "PicoContainer: instantiation failed: {0}, reason: {1}";
031    public final static String INVOKING = "PicoContainer: invoking {0} on {1}";
032    public final static String INVOKED = "PicoContainer: invoked {0} on {1} [{2} ms]";
033    public final static String INVOCATION_FAILED = "PicoContainer: invocation failed: {0} on {1}, reason: {2}";
034    public final static String LIFECYCLE_INVOCATION_FAILED = "PicoContainer: lifecycle invocation failed: {0} on {1}, reason: {2}";
035    public final static String NO_COMPONENT = "PicoContainer: No component for key: {0}";
036
037    public static String format(String template, Object... arguments) {
038        return MessageFormat.format(template, arguments);
039    }
040
041    public static String parmsToString(Object[] injected) {
042        StringBuffer sb = new StringBuffer();
043        for (int i = 0; i < injected.length; i++) {
044            String s = injected[i].getClass().getName();
045            sb.append(s);
046            if (i < injected.length-1) {
047                sb.append(", ");
048            }
049        }
050        return sb.toString();
051    }
052
053    public static String ctorToString(Constructor constructor) {
054        Class[] params = constructor.getParameterTypes();
055        StringBuffer sb = new StringBuffer(constructor.getName());
056        sb.append("(");
057        for (int i = 0; i < params.length; i++) {
058            String s = params[i].getName();
059            sb.append(s);
060            if (i < params.length-1) {
061                sb.append(", ");
062            }
063        }
064        sb.append(")");
065        return sb.toString();
066    }
067
068    public static String methodToString(Member member) {
069        StringBuffer sb = new StringBuffer(member.getName());
070        if (member instanceof Method) {
071            Class[] params = ((Method) member).getParameterTypes();
072            sb.append("(");
073            for (int i = 0; i < params.length; i++) {
074                String s = params[i].getName();
075                sb.append(s);
076                if (i < params.length-1) {
077                    sb.append(", ");
078                }
079            }
080            sb.append(")");            
081        }
082        return sb.toString();
083    }
084
085    public static String memberToString(Member m) {
086        if (m instanceof Field) {
087            return toString((Field) m);
088        } else {
089            return methodToString((Method) m);
090        }
091    }
092
093    public static String toString(Field field) {
094        StringBuffer sb = new StringBuffer(field.getName());
095        sb.append("(").append(field.getName()).append(")");
096        return sb.toString();
097    }
098
099}