| /* |
| * Copyright (c) 2012, 2021 Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2018 Payara Foundation and/or its affiliates. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0, which is available at |
| * http://www.eclipse.org/legal/epl-2.0. |
| * |
| * This Source Code may also be made available under the following Secondary |
| * Licenses when the conditions for such availability set forth in the |
| * Eclipse Public License v. 2.0 are satisfied: GNU General Public License, |
| * version 2 with the GNU Classpath Exception, which is available at |
| * https://www.gnu.org/software/classpath/license.html. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 |
| */ |
| |
| package org.glassfish.jersey.internal.inject; |
| |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.ParameterizedType; |
| import java.lang.reflect.Type; |
| import java.security.AccessController; |
| import java.text.ParseException; |
| import java.util.Date; |
| import java.util.List; |
| import java.util.Optional; |
| import java.util.OptionalDouble; |
| import java.util.OptionalInt; |
| import java.util.OptionalLong; |
| |
| import javax.inject.Inject; |
| import javax.inject.Singleton; |
| import javax.ws.rs.ProcessingException; |
| import javax.ws.rs.WebApplicationException; |
| import javax.ws.rs.ext.ParamConverter; |
| import javax.ws.rs.ext.ParamConverterProvider; |
| |
| import org.glassfish.jersey.internal.LocalizationMessages; |
| import org.glassfish.jersey.internal.util.ReflectionHelper; |
| import org.glassfish.jersey.internal.util.collection.ClassTypePair; |
| import org.glassfish.jersey.message.internal.HttpDateFormat; |
| |
| /** |
| * Container of several different {@link ParamConverterProvider param converter providers} |
| * implementations. The nested provider implementations encapsulate various different |
| * strategies of constructing an instance from a {@code String} value. |
| * |
| * @author Paul Sandoz |
| * @author Marek Potociar |
| */ |
| @Singleton |
| public class ParamConverters { |
| |
| private abstract static class AbstractStringReader<T> implements ParamConverter<T> { |
| |
| @Override |
| public T fromString(final String value) { |
| if (value == null) { |
| throw new IllegalArgumentException(LocalizationMessages.METHOD_PARAMETER_CANNOT_BE_NULL("value")); |
| } |
| try { |
| return _fromString(value); |
| } catch (final InvocationTargetException ex) { |
| // if the value is an empty string, return null |
| if (value.isEmpty()) { |
| return null; |
| } |
| final Throwable cause = ex.getCause(); |
| if (cause instanceof WebApplicationException) { |
| throw (WebApplicationException) cause; |
| } else { |
| throw new ExtractorException(cause); |
| } |
| } catch (final Exception ex) { |
| throw new ProcessingException(ex); |
| } |
| } |
| |
| protected abstract T _fromString(String value) throws Exception; |
| |
| @Override |
| public String toString(final T value) throws IllegalArgumentException { |
| if (value == null) { |
| throw new IllegalArgumentException(LocalizationMessages.METHOD_PARAMETER_CANNOT_BE_NULL("value")); |
| } |
| return value.toString(); |
| } |
| |
| } |
| |
| /** |
| * Provider of {@link ParamConverter param converter} that produce the target Java type instance |
| * by invoking a single {@code String} parameter constructor on the target type. |
| */ |
| @Singleton |
| public static class StringConstructor implements ParamConverterProvider { |
| |
| @Override |
| public <T> ParamConverter<T> getConverter(final Class<T> rawType, |
| final Type genericType, |
| final Annotation[] annotations) { |
| |
| final Constructor constructor = AccessController.doPrivileged(ReflectionHelper.getStringConstructorPA(rawType)); |
| |
| return (constructor == null) ? null : new AbstractStringReader<T>() { |
| |
| @Override |
| protected T _fromString(final String value) throws Exception { |
| return rawType.cast(constructor.newInstance(value)); |
| } |
| }; |
| } |
| |
| } |
| |
| /** |
| * Provider of {@link ParamConverter param converter} that produce the target Java type instance |
| * by invoking a static {@code valueOf(String)} method on the target type. |
| */ |
| @Singleton |
| public static class TypeValueOf implements ParamConverterProvider { |
| |
| @Override |
| public <T> ParamConverter<T> getConverter(final Class<T> rawType, |
| final Type genericType, |
| final Annotation[] annotations) { |
| |
| final Method valueOf = AccessController.doPrivileged(ReflectionHelper.getValueOfStringMethodPA(rawType)); |
| |
| return (valueOf == null) ? null : new AbstractStringReader<T>() { |
| |
| @Override |
| public T _fromString(final String value) throws Exception { |
| return rawType.cast(valueOf.invoke(null, value)); |
| } |
| }; |
| } |
| } |
| |
| /** |
| * Provider of {@link ParamConverter param converter} that produce the target Java type instance |
| * by invoking a static {@code fromString(String)} method on the target type. |
| */ |
| @Singleton |
| public static class TypeFromString implements ParamConverterProvider { |
| |
| @Override |
| public <T> ParamConverter<T> getConverter(final Class<T> rawType, |
| final Type genericType, |
| final Annotation[] annotations) { |
| |
| final Method fromStringMethod = AccessController.doPrivileged(ReflectionHelper.getFromStringStringMethodPA(rawType)); |
| |
| return (fromStringMethod == null) ? null : new AbstractStringReader<T>() { |
| |
| @Override |
| public T _fromString(final String value) throws Exception { |
| return rawType.cast(fromStringMethod.invoke(null, value)); |
| } |
| }; |
| } |
| } |
| |
| /** |
| * Provider of {@link ParamConverter param converter} that produce the target Java {@link Enum enum} type instance |
| * by invoking a static {@code fromString(String)} method on the target enum type. |
| */ |
| @Singleton |
| public static class TypeFromStringEnum extends TypeFromString { |
| |
| @Override |
| public <T> ParamConverter<T> getConverter(final Class<T> rawType, |
| final Type genericType, |
| final Annotation[] annotations) { |
| return (!Enum.class.isAssignableFrom(rawType)) ? null : super.getConverter(rawType, genericType, annotations); |
| } |
| } |
| |
| @Singleton |
| public static class CharacterProvider implements ParamConverterProvider { |
| |
| @Override |
| public <T> ParamConverter<T> getConverter(final Class<T> rawType, |
| final Type genericType, |
| final Annotation[] annotations) { |
| if (rawType.equals(Character.class)) { |
| return new ParamConverter<T>() { |
| @Override |
| public T fromString(String value) { |
| if (value == null || value.isEmpty()) { |
| return null; |
| // throw new IllegalStateException(LocalizationMessages.METHOD_PARAMETER_CANNOT_BE_NULL("value")); |
| } |
| |
| if (value.length() == 1) { |
| return rawType.cast(value.charAt(0)); |
| } |
| |
| throw new ExtractorException(LocalizationMessages.ERROR_PARAMETER_INVALID_CHAR_VALUE(value)); |
| } |
| |
| @Override |
| public String toString(T value) { |
| if (value == null) { |
| throw new IllegalArgumentException(LocalizationMessages.METHOD_PARAMETER_CANNOT_BE_NULL("value")); |
| } |
| return value.toString(); |
| } |
| }; |
| } |
| |
| return null; |
| } |
| } |
| |
| /** |
| * Provider of {@link ParamConverter param converter} that convert the supplied string into a Java |
| * {@link Date} instance using conversion method from the |
| * {@link HttpDateFormat http date formatter} utility class. |
| */ |
| @Singleton |
| public static class DateProvider implements ParamConverterProvider { |
| |
| @Override |
| public <T> ParamConverter<T> getConverter(final Class<T> rawType, |
| final Type genericType, |
| final Annotation[] annotations) { |
| return (rawType != Date.class) ? null : new ParamConverter<T>() { |
| |
| @Override |
| public T fromString(final String value) { |
| if (value == null) { |
| throw new IllegalArgumentException(LocalizationMessages.METHOD_PARAMETER_CANNOT_BE_NULL("value")); |
| } |
| try { |
| return rawType.cast(HttpDateFormat.readDate(value)); |
| } catch (final ParseException ex) { |
| throw new ExtractorException(ex); |
| } |
| } |
| |
| @Override |
| public String toString(final T value) throws IllegalArgumentException { |
| if (value == null) { |
| throw new IllegalArgumentException(LocalizationMessages.METHOD_PARAMETER_CANNOT_BE_NULL("value")); |
| } |
| return value.toString(); |
| } |
| }; |
| } |
| } |
| |
| /** |
| * Provider of {@link ParamConverter param converter} that produce the Optional instance |
| * by invoking {@link ParamConverterProvider}. |
| */ |
| @Singleton |
| public static class OptionalCustomProvider implements ParamConverterProvider { |
| |
| // Delegates to this provider when the type of Optional is extracted. |
| private final InjectionManager manager; |
| |
| public OptionalCustomProvider(InjectionManager manager) { |
| this.manager = manager; |
| } |
| |
| @Override |
| public <T> ParamConverter<T> getConverter(Class<T> rawType, Type genericType, Annotation[] annotations) { |
| return (rawType != Optional.class) ? null : new ParamConverter<T>() { |
| |
| @Override |
| public T fromString(String value) { |
| if (value == null) { |
| return (T) Optional.empty(); |
| } else { |
| final List<ClassTypePair> ctps = ReflectionHelper.getTypeArgumentAndClass(genericType); |
| final ClassTypePair ctp = (ctps.size() == 1) ? ctps.get(0) : null; |
| |
| for (ParamConverterProvider provider : Providers.getProviders(manager, ParamConverterProvider.class)) { |
| final ParamConverter<?> converter = provider.getConverter(ctp.rawClass(), ctp.type(), annotations); |
| if (converter != null) { |
| return (T) Optional.of(value).map(s -> converter.fromString(value)); |
| } |
| } |
| /* |
| * In this case we don't send Optional.empty() because 'value' is not null. |
| * But we return null because the provider didn't find how to parse it. |
| */ |
| return null; |
| } |
| } |
| |
| @Override |
| public String toString(T value) throws IllegalArgumentException { |
| /* |
| * Unfortunately 'orElse' cannot be stored in an Optional. As only one value can |
| * be stored, it makes no sense that 'value' is Optional. It can just be the value. |
| * We don't fail here but we don't process it. |
| */ |
| return null; |
| } |
| }; |
| } |
| |
| } |
| |
| /** |
| * Provider of {@link ParamConverter param converter} that produce the OptionalInt, OptionalDouble |
| * or OptionalLong instance. |
| */ |
| @Singleton |
| public static class OptionalProvider implements ParamConverterProvider { |
| |
| @Override |
| public <T> ParamConverter<T> getConverter(Class<T> rawType, Type genericType, Annotation[] annotations) { |
| final Optionals optionals = Optionals.getOptional(rawType); |
| return (optionals == null) ? null : new ParamConverter<T>() { |
| |
| @Override |
| public T fromString(String value) { |
| if (value == null) { |
| return (T) optionals.empty(); |
| } else { |
| return (T) optionals.of(value); |
| } |
| } |
| |
| @Override |
| public String toString(T value) throws IllegalArgumentException { |
| /* |
| * Unfortunately 'orElse' cannot be stored in an Optional. As only one value can |
| * be stored, it makes no sense that 'value' is Optional. It can just be the value. |
| * We don't fail here but we don't process it. |
| */ |
| return null; |
| } |
| }; |
| } |
| |
| private static enum Optionals { |
| |
| OPTIONAL_INT(OptionalInt.class) { |
| @Override |
| Object empty() { |
| return OptionalInt.empty(); |
| } |
| @Override |
| Object of(Object value) { |
| return OptionalInt.of(Integer.parseInt((String) value)); |
| } |
| }, OPTIONAL_DOUBLE(OptionalDouble.class) { |
| @Override |
| Object empty() { |
| return OptionalDouble.empty(); |
| } |
| @Override |
| Object of(Object value) { |
| return OptionalDouble.of(Double.parseDouble((String) value)); |
| } |
| }, OPTIONAL_LONG(OptionalLong.class) { |
| @Override |
| Object empty() { |
| return OptionalLong.empty(); |
| } |
| @Override |
| Object of(Object value) { |
| return OptionalLong.of(Long.parseLong((String) value)); |
| } |
| }; |
| |
| private final Class<?> clazz; |
| |
| private Optionals(Class<?> clazz) { |
| this.clazz = clazz; |
| } |
| |
| private static Optionals getOptional(Class<?> clazz) { |
| for (Optionals optionals : Optionals.values()) { |
| if (optionals.clazz == clazz) { |
| return optionals; |
| } |
| } |
| return null; |
| } |
| |
| abstract Object empty(); |
| |
| abstract Object of(Object value); |
| } |
| } |
| |
| /** |
| * Aggregated {@link ParamConverterProvider param converter provider}. |
| */ |
| @Singleton |
| public static class AggregatedProvider implements ParamConverterProvider { |
| |
| private final ParamConverterProvider[] providers; |
| |
| /** |
| * Create new aggregated {@link ParamConverterProvider param converter provider}. |
| */ |
| @Inject |
| public AggregatedProvider(InjectionManager manager) { |
| this.providers = new ParamConverterProvider[] { |
| // ordering is important (e.g. Date provider must be executed before String Constructor |
| // as Date has a deprecated String constructor |
| new DateProvider(), |
| new TypeFromStringEnum(), |
| new TypeValueOf(), |
| new CharacterProvider(), |
| new TypeFromString(), |
| new StringConstructor(), |
| new OptionalCustomProvider(manager), |
| new OptionalProvider() |
| }; |
| } |
| |
| @Override |
| public <T> ParamConverter<T> getConverter(final Class<T> rawType, |
| final Type genericType, |
| final Annotation[] annotations) { |
| for (final ParamConverterProvider p : providers) { |
| // This iteration trough providers is important. It can't be replaced by just registering all the internal |
| // providers of this class. Using iteration trough array the correct ordering of providers is ensured (see |
| // javadoc of PathParam, HeaderParam, ... - there is defined a fixed order of constructing objects form Strings). |
| final ParamConverter<T> reader = p.getConverter(rawType, genericType, annotations); |
| if (reader != null) { |
| return reader; |
| } |
| } |
| return null; |
| } |
| } |
| } |