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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
/*
* $Id$
*/
/*
*
* LoggingLexicalHandler.java
*
*/
package org.apache.qetest.xsl;
import org.apache.qetest.Logger;
import org.apache.qetest.LoggingHandler;
import org.xml.sax.SAXException;
import org.xml.sax.ext.LexicalHandler;
/**
* Cheap-o LexicalHandler for use by API tests.
* <p>Implements LexicalHandler and dumps simplistic info
* everything to a Logger; a way to debug SAX stuff.</p>
* @author shane_curcuru@lotus.com
* @version $Id$
*/
public class LoggingLexicalHandler extends LoggingHandler implements LexicalHandler
{
/** No-op sets logger to default. */
public LoggingLexicalHandler()
{
setLogger(getDefaultLogger());
}
/**
* Ctor that calls setLogger automatically.
*
* @param l Logger we should log to
*/
public LoggingLexicalHandler(Logger l)
{
setLogger(l);
}
/**
* Our default handler that we pass all events through to.
*/
protected LexicalHandler defaultHandler = null;
/**
* Set a default handler for us to wrapper.
* Set a LexicalHandler for us to use.
*
* @param default Object of the correct type to pass-through to;
* throws IllegalArgumentException if null or incorrect type
*/
public void setDefaultHandler(Object defaultH)
{
try
{
defaultHandler = (LexicalHandler)defaultH;
}
catch (Throwable t)
{
throw new java.lang.IllegalArgumentException("setDefaultHandler illegal type: " + t.toString());
}
}
/**
* Accessor method for our default handler.
*
* @return default (Object) our default handler; null if unset
*/
public Object getDefaultHandler()
{
return (Object)defaultHandler;
}
/** Prefixed to all logger msg output. */
public static final String prefix = "LLH:";
/** Constant for items returned in getCounters: startDTD. */
public static final int TYPE_STARTDTD = 0;
/** Constant for items returned in getCounters: endDTD. */
public static final int TYPE_ENDDTD = 1;
/** Constant for items returned in getCounters: startEntity. */
public static final int TYPE_STARTENTITY = 2;
/** Constant for items returned in getCounters: endEntity. */
public static final int TYPE_ENDENTITY = 3;
/** Constant for items returned in getCounters: startCDATA. */
public static final int TYPE_STARTCDATA = 4;
/** Constant for items returned in getCounters: endCDATA. */
public static final int TYPE_ENDCDATA = 5;
/** Constant for items returned in getCounters: comment. */
public static final int TYPE_COMMENT = 6;
/**
* Counters for how many events we've handled.
* Index into array are the TYPE_* constants.
*/
protected int[] counters =
{
0, /* startDTD */
0, /* endDTD */
0, /* startEntity */
0, /* endEntity */
0, /* startCDATA */
0, /* endCDATA */
0 /* comment */
};
/**
* Get a list of counters of all items we've logged.
* Returned in order as startDTD, endDTD, startEntity,
* endEntity, startCDATA, endCDATA, comment.
* Index into array are the TYPE_* constants.
*
* @return array of int counters for each item we log
*/
public int[] getCounters()
{
return counters;
}
/**
* Really Cheap-o string representation of our state.
*
* @return String of getCounters() rolled up in minimal space
*/
public String getQuickCounters()
{
return (prefix + "("
+ counters[TYPE_STARTDTD] + ", " + counters[TYPE_ENDDTD] + "; "
+ counters[TYPE_STARTENTITY] + ", " + counters[TYPE_ENDENTITY] + "; "
+ counters[TYPE_STARTCDATA] + ", " + counters[TYPE_ENDCDATA] + "; "
+ counters[TYPE_COMMENT] + ")");
}
/** Expected values for events we may handle, default=ITEM_DONT_CARE. */
protected String[] expected =
{
ITEM_DONT_CARE, /* startDTD */
ITEM_DONT_CARE, /* endDTD */
ITEM_DONT_CARE, /* startEntity */
ITEM_DONT_CARE, /* endEntity */
ITEM_DONT_CARE, /* startCDATA */
ITEM_DONT_CARE, /* endCDATA */
ITEM_DONT_CARE /* comment */
};
/** Cheap-o string representation of last event we got. */
protected String lastItem = NOTHING_HANDLED;
/**
* Accessor for string representation of last event we got.
* @param s string to set
*/
protected void setLastItem(String s)
{
lastItem = s;
}
/**
* Accessor for string representation of last event we got.
* @return last event string we had
*/
public String getLast()
{
return lastItem;
}
/**
* Ask us to report checkPass/Fail for certain events we handle.
* Since we may have to handle many events between when a test
* will be able to call us, testers can set this to have us
* automatically call checkPass when we see an item that matches,
* or to call checkFail when we get an unexpected item.
* Generally, we only call check* methods when:
* <ul>
* <li>containsString is not set, reset, or is ITEM_DONT_CARE,
* we do nothing (i.e. never call check* for this item)</li>
* <li>containsString is ITEM_CHECKFAIL, we will always call
* checkFail with the contents of any item if it occours</li>
* <li>containsString is anything else, we will grab a String
* representation of every item of that type that comes along,
* and if the containsString is found, case-sensitive, within
* the handled item's string, call checkPass, otherwise
* call checkFail</li>
* <ul>
* Note that any time we handle a particular event that was
* expected, we un-set the expected value for that item. This
* means that you can only ask us to validate one occourence
* of any particular event; all events after that one will
* be treated as ITEM_DONT_CARE. Callers can of course call
* setExpected again, of course, but this covers the case where
* we handle multiple events in a single block, perhaps out of
* the caller's direct control.
* Note that we first store the event via setLast(), then we
* validate the event as above, and then we potentially
* re-throw the exception as by setThrowWhen().
*
* @param itemType which of the various types of items we might
* handle; should be defined as a constant by subclasses
* @param containsString a string to look for within whatever
* item we handle - usually checked for by seeing if the actual
* item we handle contains the containsString
*/
public void setExpected(int itemType, String containsString)
{
// Default to don't care on null
if (null == containsString)
containsString = ITEM_DONT_CARE;
try
{
expected[itemType] = containsString;
}
catch (ArrayIndexOutOfBoundsException aioobe)
{
// Just log it for callers reference and continue anyway
logger.logMsg(level, prefix + " setExpected called with illegal type:" + itemType);
}
}
/**
* Reset all items or counters we've handled.
*/
public void reset()
{
setLastItem(NOTHING_HANDLED);
for (int i = 0; i < counters.length; i++)
{
counters[i] = 0;
}
for (int j = 0; j < expected.length; j++)
{
expected[j] = ITEM_DONT_CARE;
}
}
/**
* Worker method to either log or call check* for this event.
* A simple way to validate for any kind of event.
* Note that various events may store the various arguments
* they get differently, so you should check the code to
* ensure you're specifying the correct containsString.
*
* @param type of event (startdtd|enddtd|etc)
* @param desc detail info from this kind of message
*/
protected void logOrCheck(int type, String desc)
{
String tmp = getQuickCounters() + " " + desc;
// Either log the exception or call checkPass/checkFail
// as requested by setExpected for this type
if (ITEM_DONT_CARE == expected[type])
{
// We don't care about this, just log it
logger.logMsg(level, tmp);
}
else if (ITEM_CHECKFAIL == expected[type])
{
// We shouldn't have been called here, so fail
logger.checkFail(tmp + " was unexpected");
}
else if ((null != desc)
&& (desc.indexOf(expected[type]) > -1))
{
// We got a warning the user expected, so pass
logger.checkPass(tmp + " matched");
// Also reset this counter
//@todo needswork: this is very state-dependent, and
// might not be what the user expects, but at least it
// won't give lots of extra false fails or passes
expected[type] = ITEM_DONT_CARE;
}
else
{
// We got a warning the user didn't expect, so fail
logger.checkFail(tmp + " did not match");
// Also reset this counter
expected[type] = ITEM_DONT_CARE;
}
}
////////////////// Implement LexicalHandler //////////////////
public void startDTD (String name, String publicId, String systemId)
throws SAXException
{
// Note: this implies this class is !not! threadsafe
// Increment counter and save info
counters[TYPE_STARTDTD]++;
setLastItem("startDTD: " + name + ", " + publicId + ", " + systemId);
logOrCheck(TYPE_STARTDTD, getLast());
if (null != defaultHandler)
defaultHandler.startDTD(name, publicId, systemId);
}
public void endDTD ()
throws SAXException
{
counters[TYPE_ENDDTD]++;
setLastItem("endDTD");
logOrCheck(TYPE_ENDDTD, getLast());
if (null != defaultHandler)
defaultHandler.endDTD();
}
public void startEntity (String name)
throws SAXException
{
counters[TYPE_STARTENTITY]++;
setLastItem("startEntity: " + name);
logOrCheck(TYPE_STARTENTITY, getLast());
if (null != defaultHandler)
defaultHandler.startEntity(name);
}
public void endEntity (String name)
throws SAXException
{
counters[TYPE_ENDENTITY]++;
setLastItem("endEntity: " + name);
logOrCheck(TYPE_ENDENTITY, getLast());
if (null != defaultHandler)
defaultHandler.endEntity(name);
}
public void startCDATA ()
throws SAXException
{
counters[TYPE_STARTCDATA]++;
setLastItem("startCDATA");
logOrCheck(TYPE_STARTCDATA, getLast());
if (null != defaultHandler)
defaultHandler.startCDATA();
}
public void endCDATA ()
throws SAXException
{
counters[TYPE_ENDCDATA]++;
setLastItem("endCDATA");
logOrCheck(TYPE_ENDCDATA, getLast());
if (null != defaultHandler)
defaultHandler.endCDATA();
}
public void comment (char ch[], int start, int length)
throws SAXException
{
counters[TYPE_COMMENT]++;
StringBuffer buf = new StringBuffer("comment: ");
buf.append(ch);
buf.append(", ");
buf.append(start);
buf.append(", ");
buf.append(length);
setLastItem(buf.toString());
logOrCheck(TYPE_COMMENT, getLast());
if (null != defaultHandler)
defaultHandler.comment(ch, start, length);
}
}