io.polaris.core.converter.AbstractSimpleConverter Maven / Gradle / Ivy
package io.polaris.core.converter;
import io.polaris.core.collection.Iterables;
import io.polaris.core.json.JsonSerializer;
import io.polaris.core.lang.JavaType;
import io.polaris.core.service.StatefulServiceLoader;
import java.util.Optional;
/**
* @author Qt
* @since 1.8
*/
public abstract class AbstractSimpleConverter extends AbstractConverter {
protected final T doConvert(S value, JavaType targetType, JavaType sourceType) {
return doConvert(value, targetType);
}
// @Override
// public T convert(Object value) {
// if (value == null) {
// return null;
// }
// JavaType targetType = getTargetType();
// if (targetType.getRawType() instanceof Class && targetType.isInstance(value)) {
// // 无泛型且类型匹配
// return targetType.cast(value);
// }
// /*if (!Map.class.isAssignableFrom(targetType.getRawClass())
// && !Collection.class.isAssignableFrom(targetType.getRawClass())) {
// if (targetType.isInstance(value)) {
// return targetType.cast(value);
// }
// }*/
// return doConvert(value, targetType);
// }
protected abstract T doConvert(Object value, JavaType targetType);
protected String asString(Object value) {
if (value == null) {
return null;
}
if (value instanceof CharSequence) {
return value.toString();
}
if (value instanceof Character) {
return String.valueOf((char) value);
}
// 扩展json实现，
Optional optional = StatefulServiceLoader.load(JsonSerializer.class).optionalService();
if (optional.isPresent()) {
return optional.get().serialize(value);
}
if (value.getClass().isArray()) {
return Iterables.toArrayString(value);
}
return value.toString();
}
}