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io.polaris.core.converter.ConverterRegistry Maven / Gradle / Ivy
package io.polaris.core.converter;
import io.polaris.core.converter.support.*;
import io.polaris.core.lang.JavaType;
import io.polaris.core.lang.TypeRef;
import io.polaris.core.lang.bean.Beans;
import io.polaris.core.log.ILogger;
import io.polaris.core.log.ILoggers;
import io.polaris.core.reflect.Reflects;
import io.polaris.core.service.Service;
import io.polaris.core.service.ServiceLoader;
import io.polaris.core.ulid.Ulid;
import javax.annotation.Nullable;
import java.lang.ref.SoftReference;
import java.lang.ref.WeakReference;
import java.lang.reflect.Type;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.net.URI;
import java.net.URL;
import java.nio.charset.Charset;
import java.nio.file.Path;
import java.time.*;
import java.time.chrono.ChronoPeriod;
import java.time.temporal.TemporalAccessor;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.*;
/**
* @author Qt
* @since 1.8
*/
@SuppressWarnings({"all"})
public class ConverterRegistry {
private static final ILogger log = ILoggers.of(ConverterRegistry.class);
private static final Map> standardConverters = new ConcurrentHashMap<>();
private static final Map> serviceConverters = new ConcurrentHashMap<>();
private final Map> customConverters = new ConcurrentHashMap<>();
static {
initStandard();
loadServices();
}
public ConverterRegistry() {
}
private static void initStandard() {
// 原始类型转换器
standardConverters.put(int.class, new PrimitiveConverter(int.class));
standardConverters.put(long.class, new PrimitiveConverter(long.class));
standardConverters.put(byte.class, new PrimitiveConverter(byte.class));
standardConverters.put(short.class, new PrimitiveConverter(short.class));
standardConverters.put(float.class, new PrimitiveConverter(float.class));
standardConverters.put(double.class, new PrimitiveConverter(double.class));
standardConverters.put(char.class, new PrimitiveConverter(char.class));
standardConverters.put(boolean.class, new PrimitiveConverter(boolean.class));
// 包装类转换器
standardConverters.put(Number.class, new NumberConverter(Number.class));
standardConverters.put(Integer.class, new NumberConverter(Integer.class));
standardConverters.put(AtomicInteger.class, new NumberConverter(AtomicInteger.class));
standardConverters.put(Long.class, new NumberConverter(Long.class));
standardConverters.put(LongAdder.class, new NumberConverter(LongAdder.class));
standardConverters.put(AtomicLong.class, new NumberConverter(AtomicLong.class));
standardConverters.put(Byte.class, new NumberConverter(Byte.class));
standardConverters.put(Short.class, new NumberConverter(Short.class));
standardConverters.put(Float.class, new NumberConverter(Float.class));
standardConverters.put(Double.class, new NumberConverter(Double.class));
standardConverters.put(DoubleAdder.class, new NumberConverter(DoubleAdder.class));
standardConverters.put(BigDecimal.class, new NumberConverter(BigDecimal.class));
standardConverters.put(BigInteger.class, new NumberConverter(BigInteger.class));
standardConverters.put(Character.class, new CharacterConverter());
standardConverters.put(Boolean.class, new BooleanConverter());
standardConverters.put(AtomicBoolean.class, new AtomicBooleanConverter());
standardConverters.put(CharSequence.class, new StringConverter());
standardConverters.put(String.class, new StringConverter());
// URI and URL
standardConverters.put(URI.class, new URIConverter());
standardConverters.put(URL.class, new URLConverter());
// 日期时间
standardConverters.put(Calendar.class, new CalendarConverter());
standardConverters.put(java.util.Date.class, new DateConverter(java.util.Date.class));
standardConverters.put(java.sql.Date.class, new DateConverter(java.sql.Date.class));
standardConverters.put(java.sql.Time.class, new DateConverter(java.sql.Time.class));
standardConverters.put(java.sql.Timestamp.class, new DateConverter(java.sql.Timestamp.class));
// 日期时间 JDK8+
standardConverters.put(TemporalAccessor.class, new TemporalAccessorConverter(Instant.class));
standardConverters.put(Instant.class, new TemporalAccessorConverter(Instant.class));
standardConverters.put(LocalDateTime.class, new TemporalAccessorConverter(LocalDateTime.class));
standardConverters.put(LocalDate.class, new TemporalAccessorConverter(LocalDate.class));
standardConverters.put(LocalTime.class, new TemporalAccessorConverter(LocalTime.class));
standardConverters.put(ZonedDateTime.class, new TemporalAccessorConverter(ZonedDateTime.class));
standardConverters.put(OffsetDateTime.class, new TemporalAccessorConverter(OffsetDateTime.class));
standardConverters.put(OffsetTime.class, new TemporalAccessorConverter(OffsetTime.class));
standardConverters.put(DayOfWeek.class, new TemporalAccessorConverter(DayOfWeek.class));
standardConverters.put(Month.class, new TemporalAccessorConverter(Month.class));
standardConverters.put(MonthDay.class, new TemporalAccessorConverter(MonthDay.class));
standardConverters.put(Year.class, new TemporalAccessorConverter(Year.class));
standardConverters.put(YearMonth.class, new TemporalAccessorConverter(YearMonth.class));
standardConverters.put(Period.class, new PeriodConverter());
standardConverters.put(ChronoPeriod.class, new PeriodConverter());
standardConverters.put(Duration.class, new DurationConverter());
// Reference
standardConverters.put(WeakReference.class, new ReferenceConverter(WeakReference.class));
standardConverters.put(SoftReference.class, new ReferenceConverter(SoftReference.class));
standardConverters.put(AtomicReference.class, new AtomicReferenceConverter());
//AtomicXXXArray
standardConverters.put(AtomicIntegerArray.class, new AtomicIntegerArrayConverter());
standardConverters.put(AtomicLongArray.class, new AtomicLongArrayConverter());
// 其它类型
standardConverters.put(Class.class, new ClassConverter());
standardConverters.put(TimeZone.class, new TimeZoneConverter());
standardConverters.put(Locale.class, new LocaleConverter());
standardConverters.put(Charset.class, new CharsetConverter());
standardConverters.put(Path.class, new PathConverter());
standardConverters.put(Currency.class, new CurrencyConverter());
standardConverters.put(UUID.class, new UUIDConverter());
standardConverters.put(Ulid.class, new UlidConverter());
standardConverters.put(StackTraceElement.class, new StackTraceElementConverter());
standardConverters.put(Optional.class, new OptionalConverter());
}
private static void loadServices() {
for (Service service : ServiceLoader.of(Converter.class)) {
try {
Class converterClass = service.getServiceClass();
Converter converter = service.newInstance();
Type actualType = JavaType.of(converterClass).getActualType(Converter.class, 0);
serviceConverters.putIfAbsent(actualType, converter);
} catch (Exception ignore) {
}
}
}
@Nullable
public Converter getConverter(Type type) {
Converter converter = (Converter) customConverters.get(type);
if (converter != null) {
return converter;
}
converter = (Converter) serviceConverters.get(type);
if (converter != null) {
return converter;
}
converter = (Converter) standardConverters.get(type);
return converter;
}
public Converter getConverterOrDefault(Type type, Converter defaults) {
Converter converter = getConverter(type);
return converter != null ? converter : defaults;
}
public void addConvert(Type type, Class> converterClass) {
addConvert(type, Reflects.newInstanceIfPossible(converterClass));
}
public void addConvert(Type type, Converter converter) {
customConverters.put(type, converter);
}
public T convert(Type type, Type valueType, Object value, T defaultValue) {
// check
if (value == null) {
return defaultValue;
}
if (type == Object.class) {
return (T) value;
}
/*if (Types.isUnknown(type)) {
if (defaultValue == null) {
// 未知类型
return (T) value;
} else {
type = defaultValue.getClass();
}
}*/
if (type instanceof TypeRef) {
type = ((TypeRef) type).getType();
return convert(type, valueType, value, defaultValue);
}
JavaType sourceJavaType = JavaType.of(valueType);
if (!sourceJavaType.isInstance(value)) {
throw new IllegalArgumentException();
}
JavaType targetJavaType = JavaType.of(type);
valueType = sourceJavaType.getRawType();
type = targetJavaType.getRawType();
if (valueType == type) {
return (T) value;
}
Class clazz = targetJavaType.getRawClass();
if (type instanceof Class && clazz.isInstance(value)) {
return (T) value;
}
Converter converter = getConverter(type);
if (converter != null) {
return converter.convertOrDefault(valueType, value, defaultValue);
}
if (clazz.isEnum()) {
// EnumConverter
return (T) new EnumConverter(targetJavaType.getRawClass()).convertOrDefault(valueType, value, defaultValue);
}
if (Collection.class.isAssignableFrom(clazz)) {
// CollectionConverter
CollectionConverter collectionConverter = new CollectionConverter(type);
return (T) collectionConverter.convertOrDefault(valueType, value, (Collection) defaultValue);
}
if (Map.class.isAssignableFrom(clazz)) {
// MapConverter
MapConverter mapConverter = new MapConverter(type);
return (T) mapConverter.convertOrDefault(valueType, value, (Map) defaultValue);
}
if (clazz.isArray()) {
// ArrayConverter
ArrayConverter arrayConverter = new ArrayConverter(clazz);
return (T) arrayConverter.convertOrDefault(valueType, value, defaultValue);
}
if (Beans.isBeanClass(clazz)) {
// BeanConverter
return new BeanConverter(type).convertOrDefault(valueType, value, defaultValue);
}
if (type instanceof Class) {
return Converters.convertByPropertyEditor((Class) type, value, defaultValue);
}
if (clazz.isInstance(value)) {
return (T) value;
}
return clazz.cast(value);
}
public T convert(Type type, Type valueType, Object value) {
return convert(type, valueType, value, null);
}
public T convert(Type type, Object value, T defaultValue) {
if (value == null) {
return defaultValue;
}
return convert(type, value.getClass(), value, defaultValue);
}
public T convert(Type type, Object value) {
if (value == null) {
return null;
}
return convert(type, value, null);
}
public T convertQuietly(Type type, Type valueType, Object value, T defaultValue) {
try {
return convert(type, valueType, value, defaultValue);
} catch (Exception e) {
log.warn("类型转换失败：{}", e.getMessage());
if (log.isDebugEnabled()) {
log.debug(e.getMessage(), e);
}
return defaultValue;
}
}
public T convertQuietly(Type type, Type valueType, Object value) {
return convertQuietly(type, valueType, value, null);
}
public T convertQuietly(Type type, Object value, T defaultValue) {
if (value == null) {
return defaultValue;
}
return convertQuietly(type, value.getClass(), value, defaultValue);
}
public T convertQuietly(Type type, Object value) {
if (value == null) {
return null;
}
return convertQuietly(type, value.getClass(), value, null);
}
}
