001/*
002 *  Copyright 2019 Anyware Services
003 *
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package org.ametys.cms.search.query;
017
018import java.lang.reflect.Field;
019import java.lang.reflect.Modifier;
020import java.util.ArrayList;
021import java.util.Arrays;
022import java.util.List;
023import java.util.stream.Collectors;
024
025import org.apache.commons.lang3.StringUtils;
026
027final class QueryDebugger
028{
029    private QueryDebugger()
030    { }
031    
032    static final String toDebugString(Query query, int indent)
033    {
034        String toStr;
035        try
036        {
037            toStr = query.getClass().getSimpleName()
038                + "("
039                + _getFields(query).stream()
040                    .filter(QueryDebugger::_showField)
041                    .map(f -> _fieldToString(f, query))
042                    .collect(Collectors.joining(","))
043                + ")";
044        }
045        catch (Exception e)
046        {
047            toStr = query.toString();
048        }
049        return StringUtils.repeat(' ', indent) + toStr;
050    }
051    
052    private static final List<Field> _getFields(Query query)
053    {
054        List<Field> fields = new ArrayList<>();
055        for (Class< ? > clazz = query.getClass(); clazz != null; clazz = clazz.getSuperclass())
056        {
057            fields.addAll(Arrays.asList(clazz.getDeclaredFields()));
058        }
059        return fields;
060    }
061    
062    private static final boolean _showField(Field f)
063    {
064        return !Modifier.isStatic(f.getModifiers());
065    }
066    
067    private static final String _fieldToString(Field f, Query query)
068    {
069        try
070        {
071            f.setAccessible(true);
072            Object val = f.get(query);
073            String strVal = val != null && val.getClass().isArray()
074                    ? Arrays.toString((Object[]) val)
075                    : String.valueOf(val);
076            return f.getName() + ":" + strVal;
077        }
078        catch (Exception e)
079        {
080            return "";
081        }
082    }
083}