com.wavemaker.runtime.WMObjectMapper Maven / Gradle / Ivy
/**
* Copyright (C) 2020 WaveMaker, Inc.
*
* Licensed 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 com.wavemaker.runtime;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Reader;
import java.io.StringWriter;
import java.io.Writer;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.text.SimpleDateFormat;
import java.time.LocalDateTime;
import java.util.Date;
import org.apache.commons.io.IOUtils;
import org.springframework.data.domain.Slice;
import org.springframework.http.HttpHeaders;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.TreeNode;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.cfg.MapperConfig;
import com.fasterxml.jackson.databind.introspect.AnnotatedMethod;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.FilterProvider;
import com.fasterxml.jackson.databind.ser.std.SqlDateSerializer;
import com.fasterxml.jackson.databind.type.TypeFactory;
import com.fasterxml.jackson.datatype.hibernate5.Hibernate5Module;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import com.wavemaker.commons.json.deserializer.HttpHeadersDeSerializer;
import com.wavemaker.commons.json.deserializer.WMDateDeSerializer;
import com.wavemaker.commons.json.deserializer.WMSqlDateDeSerializer;
import com.wavemaker.commons.json.module.WMJacksonModule;
import com.wavemaker.commons.json.serializer.NoOpByteArraySerializer;
import com.wavemaker.commons.json.serializer.WMLocalDateTimeSerializer;
import com.wavemaker.runtime.mixins.SliceMixin;
public class WMObjectMapper extends ObjectMapper {
private static WMObjectMapper instance = new WMObjectMapper();
private static WMPropertyNamingStrategy PROPERTY_NAMING_STRATEGY = new WMPropertyNamingStrategy();
private WMObjectReadMapper readMapper;
private WMObjectWriteMapper writeMapper;
protected WMObjectMapper() {
readMapper = new WMObjectReadMapper();
writeMapper = new WMObjectWriteMapper();
}
public static WMObjectMapper getInstance() {
return instance;
}
/**
* Method that can be used to serialize any Java value as
* JSON output, written to File provided.
*/
@Override
public void writeValue(File resultFile, Object value)
throws IOException {
writeMapper.writeValue(resultFile, value);
}
@Override
public void writeValue(OutputStream out, Object value)
throws IOException {
writeMapper.writeValue(out, value);
}
@Override
public void writeValue(Writer w, Object value)
throws IOException {
writeMapper.writeValue(w, value);
}
@Override
public String writeValueAsString(Object value)
throws JsonProcessingException {
return writeMapper.writeValueAsString(value);
}
@Override
public byte[] writeValueAsBytes(Object value)
throws JsonProcessingException {
return writeMapper.writeValueAsBytes(value);
}
@Override
public void writeTree(JsonGenerator jgen, TreeNode rootNode) throws IOException {
writeMapper.writeTree(jgen, rootNode);
}
@Override
public void writeValue(JsonGenerator jgen, Object value) throws IOException {
writeMapper.writeValue(jgen, value);
}
@Override
public void writeTree(JsonGenerator jgen, JsonNode rootNode) throws IOException {
writeMapper.writeValue(jgen, rootNode);
}
@Override
public ObjectWriter writer() {
return writeMapper.writer();
}
@Override
public ObjectWriter writerWithView(final Class serializationView) {
return writeMapper.writerWithView(serializationView);
}
@Override
public ObjectWriter writer(final FilterProvider filterProvider) {
return writeMapper.writer(filterProvider);
}
@Override
public T readValue(File src, Class valueType)
throws IOException {
return readMapper.readValue(src, valueType);
}
@Override
public T readValue(File src, TypeReference valueTypeRef)
throws IOException {
return readMapper.readValue(src, valueTypeRef);
}
@Override
public T readValue(File src, JavaType valueType)
throws IOException {
return readMapper.readValue(src, valueType);
}
@Override
public T readValue(URL src, Class valueType)
throws IOException {
return readMapper.readValue(src, valueType);
}
@Override
public T readValue(URL src, TypeReference valueTypeRef)
throws IOException {
return readMapper.readValue(src, valueTypeRef);
}
@Override
public T readValue(URL src, JavaType valueType)
throws IOException {
return readMapper.readValue(src, valueType);
}
@Override
public T readValue(String content, Class valueType) throws JsonProcessingException {
return readMapper.readValue(content, valueType);
}
@Override
public T readValue(String content, TypeReference valueTypeRef) throws JsonProcessingException {
return readMapper.readValue(content, valueTypeRef);
}
@Override
public T readValue(String content, JavaType valueType) throws JsonProcessingException {
return readMapper.readValue(content, valueType);
}
@Override
public T readValue(Reader src, Class valueType)
throws IOException {
return readMapper.readValue(src, valueType);
}
@Override
public T readValue(Reader src, TypeReference valueTypeRef)
throws IOException {
return readMapper.readValue(src, valueTypeRef);
}
@Override
public T readValue(Reader src, JavaType valueType)
throws IOException {
return readMapper.readValue(src, valueType);
}
@Override
public T readValue(InputStream src, Class valueType)
throws IOException {
return readMapper.readValue(src, valueType);
}
@Override
public T readValue(InputStream src, TypeReference valueTypeRef)
throws IOException {
return readMapper.readValue(src, valueTypeRef);
}
@Override
public T readValue(byte[] src, Class valueType)
throws IOException {
return readMapper.readValue(src, valueType);
}
@Override
public T readValue(
byte[] src, int offset, int len,
Class valueType)
throws IOException {
return readMapper.readValue(src, offset, len, valueType);
}
@Override
public T readValue(byte[] src, TypeReference valueTypeRef)
throws IOException {
return readMapper.readValue(src, valueTypeRef);
}
@Override
public T readValue(
byte[] src, int offset, int len,
TypeReference valueTypeRef)
throws IOException {
return readMapper.readValue(src, offset, len, valueTypeRef);
}
@Override
public T readValue(byte[] src, JavaType valueType)
throws IOException {
return readMapper.readValue(src, valueType);
}
@Override
public T readValue(
byte[] src, int offset, int len,
JavaType valueType)
throws IOException {
return readMapper.readValue(src, offset, len, valueType);
}
@Override
public T readValue(InputStream src, JavaType valueType) throws IOException {
if (String.class.equals(valueType.getRawClass())) {
StringWriter stringWriter = new StringWriter();
IOUtils.copy(src, stringWriter, StandardCharsets.UTF_8);
return (T) stringWriter.toString();
}
return readMapper.readValue(src, valueType);
}
@Override
public ObjectWriter writerWithDefaultPrettyPrinter() {
return writeMapper.writerWithDefaultPrettyPrinter();
}
@Override
public ObjectReader reader() {
return readMapper.reader();
}
public void registerReaderModule(final Module mapperModule) {
readMapper.registerModule(mapperModule);
}
public void registerWriteModule(final Module mapperModule) {
writeMapper.registerModule(mapperModule);
}
private static class WMObjectReadMapper extends ObjectMapper {
WMObjectReadMapper() {
setTypeFactory(TypeFactory.defaultInstance().withClassLoader(WMObjectReadMapper.class.getClassLoader()));
configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
SimpleModule module = new SimpleModule("WMDefaultDeSerializer");
module.addDeserializer(Date.class, new WMDateDeSerializer());
module.addDeserializer(java.sql.Date.class, new WMSqlDateDeSerializer());
module.addDeserializer(HttpHeaders.class, new HttpHeadersDeSerializer());
registerModule(module);
JavaTimeModule javaTimeModule = new JavaTimeModule();
registerModule(javaTimeModule);
setPropertyNamingStrategy(PROPERTY_NAMING_STRATEGY);
}
}
private static class WMObjectWriteMapper extends ObjectMapper {
WMObjectWriteMapper() {
setTypeFactory(TypeFactory.defaultInstance().withClassLoader(WMObjectWriteMapper.class.getClassLoader()));
disable(SerializationFeature.FAIL_ON_EMPTY_BEANS);
configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
// we are handling self references using @JsonIgnoreProperties
configure(SerializationFeature.FAIL_ON_SELF_REFERENCES, false);
setConfig(getSerializationConfig().withView(Object.class));
// mixing to ignore pageable field from page response.
addMixIn(Slice.class, SliceMixin.class);
Hibernate5Module hibernate5Module = new Hibernate5Module();
hibernate5Module.disable(Hibernate5Module.Feature.FORCE_LAZY_LOADING);
registerModule(hibernate5Module);
SimpleModule module = new SimpleModule("WMDefaultSerializer");
module.addSerializer(byte[].class, new NoOpByteArraySerializer());
// module.addSerializer(Sort.class, new SortJsonSerializer());
registerModule(module);
JavaTimeModule javaTimeModule = new JavaTimeModule();
javaTimeModule.addSerializer(LocalDateTime.class, new WMLocalDateTimeSerializer());
registerModule(javaTimeModule);
registerModule(new WMJacksonModule(false));
SimpleModule dateModule = new SimpleModule();
dateModule.addSerializer(java.sql.Date.class,
new SqlDateSerializer().withFormat(false, new SimpleDateFormat("yyyy-MM-dd")));
registerModule(dateModule);
setPropertyNamingStrategy(PROPERTY_NAMING_STRATEGY);
}
}
private static class WMPropertyNamingStrategy extends PropertyNamingStrategy {
private static final String[] POSSIBLE_GET_METHOD_START_NAMES = {"get", "is"};
private static final String[] POSSIBLE_SET_METHOD_START_NAMES = {"set"};
@Override
public String nameForGetterMethod(MapperConfig config, AnnotatedMethod method, String defaultName) {
return getPossibleFieldName(method, defaultName, POSSIBLE_GET_METHOD_START_NAMES);
}
@Override
public String nameForSetterMethod(MapperConfig config, AnnotatedMethod method, String defaultName) {
return getPossibleFieldName(method, defaultName, POSSIBLE_SET_METHOD_START_NAMES);
}
private String getPossibleFieldName(
AnnotatedMethod method, String defaultName, String[] possibleMethodStartNames) {
String name = method.getName();
for (String possibleStartName : possibleMethodStartNames) {
if (name.startsWith(possibleStartName)) {
String remPart = name.substring(possibleStartName.length());
if (remPart.isEmpty()) {
break;
}
char upper = remPart.charAt(0);
char lower = Character.toLowerCase(upper);
if (lower == upper) {
break;
}
StringBuilder sb = new StringBuilder(remPart);
sb.setCharAt(0, lower);
return sb.toString();
}
}
return defaultName;
}
}
}