/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.cxf.jaxrs.provider.jsrjsonp;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import javax.json.Json;
import javax.json.JsonArray;
import javax.json.JsonException;
import javax.json.JsonObject;
import javax.json.JsonReader;
import javax.json.JsonStructure;
import javax.json.JsonWriter;
import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import org.apache.cxf.jaxrs.utils.ExceptionUtils;
@Produces({"application/json", "application/*+json" })
@Consumes({"application/json", "application/*+json" })
@Provider
public class JsrJsonpProvider implements MessageBodyReader<JsonStructure>, MessageBodyWriter<JsonStructure> {
@Override
public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return JsonStructure.class.isAssignableFrom(type)
|| JsonObject.class.isAssignableFrom(type)
|| JsonArray.class.isAssignableFrom(type);
}
@Override
public long getSize(JsonStructure t, Class<?> type, Type genericType, Annotation[] annotations,
MediaType mediaType) {
return -1;
}
@Override
public void writeTo(JsonStructure t, Class<?> type, Type genericType, Annotation[] annotations,
MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream)
throws IOException, WebApplicationException {
if (entityStream == null) {
throw new IOException("Initialized OutputStream should be provided");
}
JsonWriter writer = null;
try {
writer = Json.createWriter(entityStream);
writer.write(t);
} finally {
if (writer != null) {
writer.close();
}
}
}
@Override
public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return JsonStructure.class.isAssignableFrom(type)
|| JsonObject.class.isAssignableFrom(type)
|| JsonArray.class.isAssignableFrom(type);
}
@Override
public JsonStructure readFrom(Class<JsonStructure> type, Type genericType, Annotation[] annotations,
MediaType mediaType, MultivaluedMap<String, String> httpHeaders, InputStream entityStream)
throws IOException, WebApplicationException {
if (entityStream == null) {
throw new IOException("Initialized InputStream should be provided");
}
JsonReader reader = null;
try {
reader = Json.createReader(entityStream);
return reader.read();
} catch (JsonException ex) {
throw ExceptionUtils.toBadRequestException(ex, null);
} finally {
if (reader != null) {
reader.close();
}
}
}
}