io.polaris.core.converter.BeanConverter Maven / Gradle / Ivy
package io.polaris.core.converter;
import io.polaris.core.io.Serializations;
import io.polaris.core.json.JsonSerializer;
import io.polaris.core.lang.JavaType;
import io.polaris.core.lang.bean.Beans;
import io.polaris.core.lang.copier.Copiers;
import io.polaris.core.lang.copier.CopyOptions;
import io.polaris.core.reflect.Reflects;
import io.polaris.core.service.StatefulServiceLoader;
import java.lang.reflect.Type;
import java.util.Map;
import java.util.Optional;
/**
* @author Qt
* @since 1.8
*/
public class BeanConverter extends AbstractConverter {
private final JavaType targetType;
private final CopyOptions copyOptions;
public BeanConverter(Type beanType) {
this(beanType, CopyOptions.create().ignoreError(true));
}
public BeanConverter(Type beanType, CopyOptions copyOptions) {
this(JavaType.of(beanType), copyOptions);
}
public BeanConverter(JavaType beanType, CopyOptions copyOptions) {
this.targetType = beanType;
this.copyOptions = copyOptions.converter((t, s) -> Converters.convert(t, s));
}
@Override
public JavaType getTargetType() {
return this.targetType;
}
@Override
protected T doConvert(S value, JavaType targetType, JavaType sourceType) {
if (sourceType.getRawType() instanceof Class) {
if (targetType.getRawClass().isAssignableFrom((Class) sourceType.getRawType())){
return (T) value;
}
} else if (targetType.getRawType() == sourceType.getRawType()) {
return (T) value;
}
if (value instanceof Map || Beans.isBeanClass(value.getClass())) {
T target = Reflects.newInstanceIfPossible(targetType.getRawClass());
return Copiers.copy(value, target, targetType.getRawType(), copyOptions);
}
if (value instanceof byte[]) {
return (T) Serializations.deserialize((byte[]) value);
}
if (value instanceof CharSequence) {
// 扩展json实现，
Optional optional = StatefulServiceLoader.load(JsonSerializer.class).optionalService();
if (optional.isPresent()) {
String json = value.toString();
return optional.get().deserialize(json, targetType.getRawType());
}
}
throw new UnsupportedOperationException();
}
}