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Miscellaneous utility classes used across multiple packages
/*
* Copyright (c) 2008-2024 The Aspectran Project
*
* 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 com.aspectran.utils.apon;
import com.aspectran.utils.BeanUtils;
import com.aspectran.utils.annotation.jsr305.NonNull;
import java.lang.reflect.Array;
import java.lang.reflect.InvocationTargetException;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Collection;
import java.util.Date;
import java.util.Map;
/**
* Converts Object to APON.
*
* Created: 2015. 03. 16 PM 11:14:29
*/
public class ObjectToAponConverter {
private String dateFormat;
private String dateTimeFormat;
public ObjectToAponConverter() {
}
public void setDateFormat(String dateFormat) {
this.dateFormat = dateFormat;
}
public void setDateTimeFormat(String dateTimeFormat) {
this.dateTimeFormat = dateTimeFormat;
}
public ObjectToAponConverter dateFormat(String dateFormat) {
setDateFormat(dateFormat);
return this;
}
public ObjectToAponConverter dateTimeFormat(String dateTimeFormat) {
setDateTimeFormat(dateTimeFormat);
return this;
}
public Parameters toParameters(Object object) {
return toParameters(null, object);
}
public Parameters toParameters(String name, Object object) {
Parameters container = new VariableParameters();
putValue(container, name, object);
return container;
}
public void putValue(Parameters container, Object value) {
putValue(container, null, value);
}
public void putValue(Parameters container, String name, Object value) {
if (name == null) {
Object o = valuelize(value);
if (o instanceof Parameters parameters) {
container.putAll(parameters);
}
} else if (value == null) {
if (container.hasParameter(name)) {
container.removeValue(name);
}
container.putValue(name, null);
} else if (value instanceof Collection collection) {
if (container.hasParameter(name)) {
container.removeValue(name);
}
for (Object o : collection) {
if (o != null) {
putValue(container, name, o);
}
}
if (!container.hasParameter(name)) {
container.putValue(name, null);
}
} else if (value.getClass().isArray()) {
if (container.hasParameter(name)) {
container.removeValue(name);
}
int len = Array.getLength(value);
for (int i = 0; i < len; i++) {
Object o = Array.get(value, i);
if (o != null) {
putValue(container, name, o);
}
}
if (!container.hasParameter(name)) {
container.putValue(name, null);
}
} else {
container.putValue(name, valuelize(value));
}
}
private Object valuelize(Object object) {
if (object == null) {
return null;
}
if (object instanceof Parameters ||
object instanceof String ||
object instanceof Number ||
object instanceof Boolean ) {
return object;
} else if (object instanceof Character) {
return String.valueOf(((char)object));
} else if (object instanceof Map map) {
Parameters ps = new VariableParameters();
for (Map.Entry entry : map.entrySet()) {
String name = entry.getKey().toString();
Object value = entry.getValue();
checkCircularReference(map, value);
putValue(ps, name, value);
}
return ps;
} else if (object instanceof Collection ||
object.getClass().isArray()) {
return object.toString();
} else if (object instanceof Date date) {
if (dateTimeFormat != null) {
SimpleDateFormat dt = new SimpleDateFormat(dateTimeFormat);
return dt.format(date);
} else {
return object.toString();
}
} else if (object instanceof LocalDate localDate) {
if (dateFormat != null) {
DateTimeFormatter formatter = DateTimeFormatter.ofPattern(dateFormat);
return localDate.format(formatter);
} else {
return object.toString();
}
} else if (object instanceof LocalDateTime localDateTime) {
if (dateTimeFormat != null) {
DateTimeFormatter formatter = DateTimeFormatter.ofPattern(dateTimeFormat);
return localDateTime.format(formatter);
} else {
return object.toString();
}
} else {
String[] readablePropertyNames = BeanUtils.getReadablePropertyNamesWithoutNonSerializable(object);
if (readablePropertyNames != null && readablePropertyNames.length > 0) {
Parameters ps = new VariableParameters();
for (String name : readablePropertyNames) {
Object value;
try {
value = BeanUtils.getProperty(object, name);
} catch (InvocationTargetException e) {
throw new InvalidParameterValueException(e);
}
checkCircularReference(object, value);
putValue(ps, name, value);
}
return ps;
} else {
return object.toString();
}
}
}
private void checkCircularReference(@NonNull Object wrapper, Object member) {
if (wrapper.equals(member)) {
throw new InvalidParameterValueException("APON Serialization Failure: A circular reference was detected " +
"while converting a member object [" + member + "] in [" + wrapper + "]");
}
}
}