I have a model which is:
#Document(indexName = "index", type = "logs")
public class Log {
#Id
private String id;
private String test_no;
private String entire_log;
private String method;
private String timestamp;
private String thread_name;
private String level;
private String logger_name;
private String formatted_message;
// CONSTRUCTORS, GETTERS AND SETTERS...
}
I have an applicationContext.xml file which contains a bean, used to save the value of the dynamic index. The location of this file is inside of src/main/resources directory, the same location than application.properties file. The bean is:
<bean id="index" class="elastest.loganalyzer.es.client.model.Index">
<property name="v" value="defaut"></property>
</bean>
where the Index class is a simple class which contains a param "v":
public class Index {
String v;
public Index() {
this.v = "default";
}
public String getV() {
return v;
}
public void setV(String v) {
this.v = v;
}
}
What I want to do is to make the index of the above model (Log) dynamic. I have tried it by different ways but I can't find the correct solution:
#Document(indexName = "#{index}", type = "logs")
#Document(indexName = "#{index.v}", type = "logs")
#Document(indexName = "#{index.getV()}", type = "logs")
So... How can I make it works?
Related
I have an Entity class with a column attribute whose type is an abstract class. I want to serialize (object to JSON string) while saving it in the database column and deserialize it into an abstract class (which in turn converts the string to the appropriate concrete class) when it is retrieved from the database.
Here's how I accomplished it:
ProductEntity.java
#Entity
#Table(name="PRODUCT")
#Data
public class ProductEntity{
#Id
#Column(name = "ID", insertable = false)
#GeneratedValue(strategy = GenerationType.IDENTITY)
private BigInteger id;
#Column(name = "DESCRIPTION")
private String description;
#Column(name = "NAME")
private String name;
#Column(name = "PRODUCT_TYPE")
private String productType;
#Column(name = "PRODUCT_SPECS")
#JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXTERNAL_PROPERTY, property =
"productType") // -------------------> Map to concrete class based on productType value
#Convert(converter = ObjectConverter.class) // ------------> custom converter
private ProductSpecification productSpec;
}
NOTE : "PRODUCT_SPECS" database column is of JSON type.
ProductSpecification.java
#NoArgsConstructor
#JsonTypeInfo(use = JsonTypeInfo.Id.MINIMAL_CLASS,
include = JsonTypeInfo.As.WRAPPER_OBJECT,
#JsonSubTypes({
#JsonSubTypes.Type(value = ComputerSpecification.class, name = "computer"),
#JsonSubTypes.Type(value = SpeakerSpecification.class, name = "speaker")
})
public abstract class ProductSpecification{ }
ComputerSpecification.java
#Getter
#Setter
#NoArgsConstructor
#JsonTypeName("computer")
public class ComputerSpecification extends ProductSpecification {
String memory;
String displaySize;
String processor;
#JsonCreator
public ComputerSpecification (#JsonProperty("memory") String memory,
#JsonProperty("displaysize") String displaySize,
#JsonProperty("processor") String processor){
super();
this.memory = memory;
this.displaySize = displaySize;
this.processor = processor;
}
}
SpeakerSpecification.java
#Getter
#Setter
#NoArgsConstructor
#JsonTypeName("computer")
public class SpeakerSpecification extends ProductSpecification {
String dimension;
String sensitivity;
String bassPrinciple;
String amplifierPower;
#JsonCreator
public SpeakerSpecification (#JsonProperty("sensitivity") String sensitivity,
#JsonProperty("dimension") String dimension,
#JsonProperty("bassPrinciple") String bassPrinciple,
#JsonProperty("amplifierPower") String amplifierPower){
super();
this.sensitivity = sensitivity;
this.dimension = dimension;
this.bassPrinciple = bassPrinciple;
this.amplifierPower = amplifierPower;
}
}
ObjectConverter.java
NOTE: I am using Jackson ObjectMapper for serialization and deserialization.
public class ObjectConverter implements AttributeConverter<Object, String>{
private final static Logger LOGGER = LoggerFactory.getLogger(ObjectConverter.class);
private static final ObjectMapper mapper;
static {
mapper = new ObjectMapper();
mapper.setSerializationInclusion(Include.NON_NULL);
}
#Override
public String convertToDatabaseColumn(Object attributeObject) {
if (attributeObject == null) {
return "";
}
try {
return mapper.writeValueAsString(attributeObject);
} catch (JsonProcessingException e) {
LOGGER.error("Could not convert to database column", e);
return null;
}
}
#Override
public Object convertToEntityAttribute(String dbColumnValue) {
try {
if (StringUtils.isBlank(dbColumnValue)) {
return null;
}
return mapper.readValue(dbColumnValue, ProductSpecification.class); // ----> mapped to
abstract class
} catch (Exception e) {
LOGGER.error("Could not convert to entity attribute", e);
return null;
}
}
}
Request body 1:
{
"name" : "Bose Bass Module 700 - Black- Wireless, Compact Subwoofer",
"description" : "This wireless, compact subwoofer is designed to be paired with the Bose sound
bar 700 to bring music, movies, and TV to life with Deep, dramatic bass. ",
"productSpec" : {
"sensitivity" : "90 dB",
"bassPrinciple" : "reflex",
"amplifierPower" : "700 watts",
"dimension" : "14-5/16inW x 42-13/16inH x 16-5/16inD"
}
}
This request gets saved in the database column "PRODUCT_SPECS" as :
{".SpeakerSpecification ":{"sensitivity" : "90 dB","bassPrinciple" : "reflex", "amplifierPower" :"700
watts", "dimension" : "14-5/16inW x 42-13/16inH x 16-5/16inD" }}
Now this solution works perfectly fine. The "SpeakerSpecification " key neither appears in the response of GET API call nor in the swagger doc. But having to store the type info in the database really bothers me.
Is there a better approach to this problem where I could avoid having the typeinfo (".SpeakerSpecification ") in the column value?
Supposing I have the following classes:
public class A {
private String id;
private List<B> related;
}
public class B {
private String id;
private String name;
}
public class ADTO {
private String id;
private List<BDTO> relations;
}
public class BDTO {
private String identificator;
private String relatedName;
}
How can I create a mapper that given an A object type returns me an ADTO object with all the information? I have to create two different mappers? Can it be done in only one mapper? I think it would be something like the following, but I don't know how to map the atributtes from the list:
#Mapper
public interface MyMapper {
#Mappings({ #Mapping(source = "related", target = "relations") })
ADTO mapperA(A obj);
}
Thanks in advance.
try this (not tested but should work properly)
when you mapping lists you should make a map for both the class element and the list to map all the elements of the list)
#Mapper
public interface MyMapper {
#Mappings({ #Mapping(source = "related", target = "relations") })
ADTO mapperA(A obj);
#Mappings(
{ #Mapping(source = "id", target = "identificator") },
{ #Mapping(source = "name", target = "relatedName") })
BDTO bDTOMapping(B b);
List<BDTO> bDTOListMapping(List<B> bList);
}
There is an entity :
#Entity
#Table(name = "ITMMASTER" , schema = "TOMCTB")
public class Article {
#Id
#Column(name = "ITMREF_0")
private String code_article;
#Column(name = "ACCCOD_0")
private String acccod;
public String getCode_article() {
return code_article;
}
public void setCode_article(String code) {
this.code_article = code;
}
public String getAcccod() {
return acccod;
}
public void setAcccod(String acccod) {
this.acccod = acccod;
}
}
I want to make the schema attribute to be dynamic depending on a properties file property value , for example : env.schema = TOMEXPL.
How to achieve that ?
I didn't tried it but I guess this should work.
public class DynamicNamingStrategy extends DefaultNamingStrategy {
#Value("db.table.name")
private String name;
#Override
public String tableName(String tableName) {
return name;
}
...
}
SessionFactory sessionFactory;
Configuration config = new AnnotationConfiguration()
.configure("hibernate.cfg.xml")
.setNamingStrategy( new DynamicNamingStrategy() );
sessionFactory = config.buildSessionFactory();
session = sessionFactory.openSession();
I work with Spring and JAXB and want to marshal a list of different DTO Objects so
the required XML response should be like :
<root>
<dto_list>
<dto1>
<name>xxx</name>
</dto1>
<dto2>
<location>xxx</location>
</dto2>
</dto_list>
</root>
Assuming the Class Objects are:
#XmlRootElement(name = "Dto1")
#XmlAccessorType(XmlAccessType.NONE)
public class Dto1 {
#XmlElement
private String name;
// setter/getters
}
and
#XmlRootElement(name = "Dto2")
#XmlAccessorType(XmlAccessType.NONE)
public class Dto2 {
#XmlElement
private String location;
// setter/getters
}
and the wrapper class:
#XmlRootElement(name = "root")
#XmlAccessorType(XmlAccessType.NONE)
public class DTOsWrapper {
private List<Object> dto;
public void setDto(List<Object> dto) {
this.dto = dto;
}
#XmlElementWrapper(name = "dto_list")
#XmlElements({
#XmlElement(name = "dto1", type = Dto1.class),
#XmlElement(name = "dto2", type = Dto2.class)
})
public List<Object> getDto() {
return dto;
}
}
and the endpoint:
#RestController
public class DTOEndpoint {
#Autowired
private IDTOService service;
#RequestMapping(value = "/restxml", produces = "application/xml")
public Object retrieveAllDTOs() {
DTOsWrapper o = service.findDtos(); //returns a DTOsWrapper obj of a list containing Dto objs, i.e Dto1, Dto2 etc
return o;
}
I get {"error": "org.springframework.http.converter.HttpMessageConversionException: Could not instantiate JAXBContext for class [class <>to.DTOsWrapper]: 1 counts of IllegalAnnotationExceptions; anyone have a clue?
I have this enum :
public enum DocumentTypes {
PDF("PDF Document"), JPG("Image files (JPG)"), DOC("Microsoft Word documents");
private final String displayName;
DocumentTypes(final String display) {
this.displayName = display;
}
#Override
public String toString() {
return this.displayName;
}
}
And a model like this :
#Entity
#Table(name = "documents")
public class Document extends Model {
#Id
public Long id;
#Constraints.Required
#Formats.NonEmpty
#Enumerated(EnumType.STRING)
#Column(length=20, nullable=false)
public DocumentTypes type;
#Constraints.Required
#Formats.NonEmpty
#Column(nullable=false)
public String document;
}
I match the enum using this in my controller :
DynamicForm form = form().bindFromRequest();
// ...
Document doc = new Document();
doc.type = DocumentTypes.valueOf(form.field("type").value());
doc.save();
The problem is that in database, it's stored as "Microsoft Word documents", but I would prefer to store it as DOC.
How can I do that?
You can define it very fine granular with the Anotation EnumMapping or EnumValue. This works with the old version org.avaje.ebean.
It seems that there was a complete rewrite of the code. In the actual version there is a different approach.