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/*
* Copyright 2022 Anton Tananaev (anton@traccar.org)
*
* 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.traccar.storage.query;
import org.traccar.storage.QueryIgnore;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
public abstract class Columns {
public abstract List<String> getColumns(Class<?> clazz, String type);
protected List<String> getAllColumns(Class<?> clazz, String type) {
List<String> columns = new LinkedList<>();
Method[] methods = clazz.getMethods();
for (Method method : methods) {
int parameterCount = type.equals("set") ? 1 : 0;
if (method.getName().startsWith(type) && method.getParameterTypes().length == parameterCount
&& !method.isAnnotationPresent(QueryIgnore.class)
&& !method.getName().equals("getClass")) {
columns.add(method.getName().substring(3).toLowerCase());
}
}
return columns;
}
public static class All extends Columns {
@Override
public List<String> getColumns(Class<?> clazz, String type) {
return getAllColumns(clazz, type);
}
}
public static class Include extends Columns {
private final List<String> columns;
public Include(String... columns) {
this.columns = Arrays.stream(columns).collect(Collectors.toList());
}
@Override
public List<String> getColumns(Class<?> clazz, String type) {
return columns;
}
}
public static class Exclude extends Columns {
private final Set<String> columns;
public Exclude(String... columns) {
this.columns = Arrays.stream(columns).collect(Collectors.toSet());
}
@Override
public List<String> getColumns(Class<?> clazz, String type) {
return getAllColumns(clazz, type).stream()
.filter(column -> !columns.contains(column))
.collect(Collectors.toList());
}
}
}
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