org.apache.xmlbeans.impl.jam.internal.JamLoggerImpl Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of commons-xmlbeans Show documentation

The Apache Commons Codec package contains simple encoder and decoders for various formats such as Base64 and Hexadecimal. In addition to these widely used encoders and decoders, the codec package also maintains a collection of phonetic encoding utilities.

The newest version!

/*   Copyright 2004 The Apache Software Foundation
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.apache.xmlbeans.impl.jam.internal;

import org.apache.xmlbeans.impl.jam.provider.JamLogger;

import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

/**
 * @author Patrick Calahan <email: pcal-at-bea-dot-com>
 */
public class JamLoggerImpl implements JamLogger {

  // ========================================================================
  // Variables

  private boolean mShowWarnings = true;
  private Set mVerboseClasses = null;
  private PrintWriter mOut = new PrintWriter(System.out,true);

  //FIXME temp until JamServiceContextImpl is no longer a subclass
  protected void setOut(PrintWriter out) { mOut= out; }

  // ========================================================================
  // JamLogger implementation

  public boolean isVerbose(Object o) {
    if (mVerboseClasses == null) return false;
    Iterator i = mVerboseClasses.iterator();
    while(i.hasNext()) {
      Class c = (Class)i.next();
      if (c.isAssignableFrom(o.getClass())) return true;
    }
    return false;
  }

  public boolean isVerbose(Class aClass) {
    if (mVerboseClasses == null) return false;
    Iterator i = mVerboseClasses.iterator();
    while(i.hasNext()) {
      Class c = (Class)i.next();
      if (c.isAssignableFrom(aClass)) return true;
    }
    return false;
  }

  public void setVerbose(Class c) {
    if (c == null) throw new IllegalArgumentException();
    if (mVerboseClasses == null) mVerboseClasses = new HashSet();
    mVerboseClasses.add(c);
  }

  public void setShowWarnings(boolean b) {
    mShowWarnings = b;
  }
  
  public void verbose(String msg, Object o) {
    if (isVerbose(o)) verbose(msg);
  }

  public void verbose(Throwable t, Object o) {
    if (isVerbose(o)) verbose(t);
  }

  public void verbose(String msg) {
    printVerbosePrefix();
    mOut.println(msg);
  }


  public void verbose(Throwable t) {
    printVerbosePrefix();
    mOut.println();
    t.printStackTrace(mOut);
  }

  public void warning(Throwable t) {
    if (mShowWarnings) {
      mOut.println("[JAM] Warning: unexpected exception thrown: ");
      t.printStackTrace();
    }
  }

  public void warning(String w) {
    if (mShowWarnings) {

      mOut.print("[JAM] Warning: ");
      mOut.println(w);
    }
  }

  public void error(Throwable t) {
    mOut.println("[JAM] Error: unexpected exception thrown: ");
    t.printStackTrace(mOut);
  }

  public void error(String msg) {
    mOut.print("[JAM] Error: ");
    mOut.println(msg);
  }

  // ========================================================================
  // Deprecated methods

  public void setVerbose(boolean v) { setVerbose(Object.class); }

  public boolean isVerbose() { return mVerboseClasses != null; }

  // ========================================================================
  // Private methods

  private void printVerbosePrefix() {
    StackTraceElement[] st = new Exception().getStackTrace();
    mOut.println("[JAM] Verbose: ");
    mOut.print('(');
    mOut.print(shortName(st[2].getClassName()));
    mOut.print('.');
    mOut.print(st[2].getMethodName());
    mOut.print(':');
    mOut.print(st[2].getLineNumber());
    mOut.print(")  ");
  }

  private static String shortName(String className) {
    int index = className.lastIndexOf('.');

    if (index != -1 ) {
      className = className.substring(index+1, className.length());
    }

    return className;
  }

}