generate all set/get for an object

generate all set/get for an object - java

I have an object that it contains multiple set and get. Example:
MettreAJourPersonne entree = new MettreAJourPersonne();
entree.setLnPEO("CHANTRAIT");
entree.setLpPEO("THERESE");
entree.setLnPEOPNY("");
entree.setCdPEOSEX("F");
entree.setCdPEOSMT("C");
entree.set .........
How to generate all the get/set automatically of the object entree?
thx
EDIT:
My object MettreAJourPersonne:
public class MettreAJourPersonne {
private String lnPEO;
private String lpPEO;
private String lnPEOPNY;
private String cdPEOSEX;
private String cdPEOSMT;
private String ayPEOFIS;
private String alPEOCOUCMP;
private String alPEOCOUBAT;
private String alPEOCOURUE;
private String alPEOCARCMP;
private String acPEOCOU;
private String alPEOCOUCMN;
private String ayPEOCOU;
.........(more elements).....
/**
* #return the lnPEO
*/
public String getLnPEO() {
return lnPEO;
}
/**
* #param lnPEO
* the lnPEO to set
*/
public void setLnPEO(String lnPEO) {
this.lnPEO = lnPEO;
}
/**
* #return the lpPEO
*/
public String getLpPEO() {
return lpPEO;
}
/**
* #param lpPEO
* the lpPEO to set
*/
public void setLpPEO(String lpPEO) {
this.lpPEO = lpPEO;
}
/**
* #return the lnPEOPNY
*/
public String getLnPEOPNY() {
return lnPEOPNY;
}
/**
* #param lnPEOPNY
* the lnPEOPNY to set
*/
public void setLnPEOPNY(String lnPEOPNY) {
this.lnPEOPNY = lnPEOPNY;
}
/**
* #return the cdPEOSEX
*/
public String getCdPEOSEX() {
return cdPEOSEX;
}
/**
* #param cdPEOSEX
* the cdPEOSEX to set
*/
public void setCdPEOSEX(String cdPEOSEX) {
this.cdPEOSEX = cdPEOSEX;
}
/**
* #return the cdPEOSMT
*/
public String getCdPEOSMT() {
return cdPEOSMT;
}
/**
* #param cdPEOSMT
* the cdPEOSMT to set
*/
public void setCdPEOSMT(String cdPEOSMT) {
this.cdPEOSMT = cdPEOSMT;
}
/**
* #return the ayPEOFIS
*/
public String getAyPEOFIS() {
return ayPEOFIS;
}
/**
* #param ayPEOFIS
* the ayPEOFIS to set
*/
public void setAyPEOFIS(String ayPEOFIS) {
this.ayPEOFIS = ayPEOFIS;
}
/**
* #return the alPEOCOUCMP
*/
public String getAlPEOCOUCMP() {
return alPEOCOUCMP;
}
/**
* #param alPEOCOUCMP
* the alPEOCOUCMP to set
*/
public void setAlPEOCOUCMP(String alPEOCOUCMP) {
this.alPEOCOUCMP = alPEOCOUCMP;
}
/**
* #return the alPEOCOUBAT
*/
public String getAlPEOCOUBAT() {
return alPEOCOUBAT;
}
/**
* #param alPEOCOUBAT
* the alPEOCOUBAT to set
*/
public void setAlPEOCOUBAT(String alPEOCOUBAT) {
this.alPEOCOUBAT = alPEOCOUBAT;
}
/**
* #return the alPEOCOURUE
*/
public String getAlPEOCOURUE() {
return alPEOCOURUE;
}
/**
* #param alPEOCOURUE
* the alPEOCOURUE to set
*/
public void setAlPEOCOURUE(String alPEOCOURUE) {
this.alPEOCOURUE = alPEOCOURUE;
}
/**
* #return the alPEOCARCMP
*/
public String getAlPEOCARCMP() {
return alPEOCARCMP;
}
/**
* #param alPEOCARCMP
* the alPEOCARCMP to set
*/
public void setAlPEOCARCMP(String alPEOCARCMP) {
this.alPEOCARCMP = alPEOCARCMP;
}
/**
* #return the acPEOCOU
*/
public String getAcPEOCOU() {
return acPEOCOU;
}
/**
* #param acPEOCOU
* the acPEOCOU to set
*/
public void setAcPEOCOU(String acPEOCOU) {
this.acPEOCOU = acPEOCOU;
}
/**
* #return the alPEOCOUCMN
*/
public String getAlPEOCOUCMN() {
return alPEOCOUCMN;
}
/**
* #param alPEOCOUCMN
* the alPEOCOUCMN to set
*/
public void setAlPEOCOUCMN(String alPEOCOUCMN) {
this.alPEOCOUCMN = alPEOCOUCMN;
}
/**
* #return the ayPEOCOU
*/
public String getAyPEOCOU() {
return ayPEOCOU;
}
/**
* #param ayPEOCOU
* the ayPEOCOU to set
*/
public void setAyPEOCOU(String ayPEOCOU) {
this.ayPEOCOU = ayPEOCOU;
}
............(more get and set)
Now, i want to use the object MettreAJourPersonne() in other class, and automatically generate all the set in the other class
MettreAJourPersonne entree = new MettreAJourPersonne();
entree.setLnPEO("CHANTRAIT");
entree.setLpPEO("THERESE");
entree.setLnPEOPNY("");
entree.setCdPEOSEX("F");
entree.setCdPEOSMT("C");
entree.set .........
Now, I must write (by hand) every call to the method set: example
entree.setLnPeo("A")
entree.setLpPeo("B")
..

Open the MettreAJourPersonne-Source in eclipse and press ALT-SHIFT-S then on Generate Getter/Setter and configure your wishes.

press ALT+SHIFT+s then press r ,
select variable which u want to create setter and getter methods.

Right click on eclipse coding window ->select "source" option -> click on Generate setter and getter option. you can generate easily all properties setter getter methods.

You can use plugin lombok no need to write set/get method. Annotation works every thing. Just add following dependency :
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.4</version>
</dependency>
Use like below:
import lombok.Getter;
import lombok.Setter;
/**
*
* #author devb
*/
#Getter
#Setter
public class Person {
private String name;
}
For Testing another class is:
/**
*
* #author devb
*/
public class AnnotationSetGetTest {
public static void main(String[] args) {
Person person = new Person();
person.setName("Bhuwan");
System.out.println(person.getName());
}
}
Output:
Bhuwan
See More On : Lombok

Related

Flink Avro Error Expecting type to be a PojoTypeInfo

I'm trying to convert a HashMap<String, Object> to an Avro record. I get this runtime exception when I do a
DataStream<AvroRecord> dsRpvSchema = filteredVlfRPV.flatMap(new MessageFlattener()) .name("ToAvroSchema").uid("ToAvroSchema").startNewChain();
Not sure what the issue is with Flink converting the valid avro record to Flink Avro.
java.lang.IllegalStateException: Expecting type to be a PojoTypeInfo
at org.apache.flink.formats.avro.typeutils.AvroTypeInfo.generateFieldsFromAvroSchema(AvroTypeInfo.java:71)
at org.apache.flink.formats.avro.typeutils.AvroTypeInfo.<init>(AvroTypeInfo.java:55)
at org.apache.flink.formats.avro.utils.AvroKryoSerializerUtils.createAvroTypeInfo(AvroKryoSerializerUtils.java:81)
at org.apache.flink.api.java.typeutils.TypeExtractor.privateGetForClass(TypeExtractor.java:1653)
at org.apache.flink.api.java.typeutils.TypeExtractor.privateGetForClass(TypeExtractor.java:1559)
at org.apache.flink.api.java.typeutils.TypeExtractor.createTypeInfoWithTypeHierarchy(TypeExtractor.java:866)
at org.apache.flink.api.java.typeutils.TypeExtractor.privateCreateTypeInfo(TypeExtractor.java:747)
at org.apache.flink.api.java.typeutils.TypeExtractor.getUnaryOperatorReturnType(TypeExtractor.java:531)
at org.apache.flink.api.java.typeutils.TypeExtractor.getFlatMapReturnTypes(TypeExtractor.java:168)
at org.apache.flink.streaming.api.datastream.DataStream.flatMap(DataStream.java:637)
I do see two questions on this but no answers provided:
Flink Kafka : Expecting type to be a PojoTypeInfo
Deserialize Avro from kafka as SpecificRecord Failing. Expecting type to be a PojoTypeInfo
UPDATE: 02/01/2022. Below is the AvroRecord class definition.
import org.apache.avro.generic.GenericArray;
import org.apache.avro.specific.SpecificData;
import org.apache.avro.util.Utf8;
import org.apache.avro.message.BinaryMessageEncoder;
import org.apache.avro.message.BinaryMessageDecoder;
import org.apache.avro.message.SchemaStore;
#org.apache.avro.specific.AvroGenerated
public class AvroRecord extends org.apache.avro.specific.SpecificRecordBase implements org.apache.avro.specific.SpecificRecord {
private static final long serialVersionUID = 9071485731787422200L;
public static final org.apache.avro.Schema SCHEMA$ = new org.apache.avro.Schema.Parser().parse("{\"type\":\"record\",\"name\":\"AvroRecord\",\"namespace\":\"com.sample.dataplatform.stream.avro\",\"fields\":[{\"name\":\"_id\",\"type\":\"string\",\"doc\":\"car_id\"}]}");
public static org.apache.avro.Schema getClassSchema() { return SCHEMA$; }
private static SpecificData MODEL$ = new SpecificData();
private static final BinaryMessageEncoder<AvroRecord> ENCODER =
new BinaryMessageEncoder<AvroRecord>(MODEL$, SCHEMA$);
private static final BinaryMessageDecoder<AvroRecord> DECODER =
new BinaryMessageDecoder<AvroRecord>(MODEL$, SCHEMA$);
/**
* Return the BinaryMessageEncoder instance used by this class.
* #return the message encoder used by this class
*/
public static BinaryMessageEncoder<AvroRecord> getEncoder() {
return ENCODER;
}
/**
* Return the BinaryMessageDecoder instance used by this class.
* #return the message decoder used by this class
*/
public static BinaryMessageDecoder<AvroRecord> getDecoder() {
return DECODER;
}
/**
* Create a new BinaryMessageDecoder instance for this class that uses the specified {#link SchemaStore}.
* #param resolver a {#link SchemaStore} used to find schemas by fingerprint
* #return a BinaryMessageDecoder instance for this class backed by the given SchemaStore
*/
public static BinaryMessageDecoder<AvroRecord> createDecoder(SchemaStore resolver) {
return new BinaryMessageDecoder<AvroRecord>(MODEL$, SCHEMA$, resolver);
}
/**
* Serializes this AvroRecord to a ByteBuffer.
* #return a buffer holding the serialized data for this instance
* #throws java.io.IOException if this instance could not be serialized
*/
public java.nio.ByteBuffer toByteBuffer() throws java.io.IOException {
return ENCODER.encode(this);
}
/**
* Deserializes a AvroRecord from a ByteBuffer.
* #param b a byte buffer holding serialized data for an instance of this class
* #return a AvroRecord instance decoded from the given buffer
* #throws java.io.IOException if the given bytes could not be deserialized into an instance of this class
*/
public static AvroRecord fromByteBuffer(
java.nio.ByteBuffer b) throws java.io.IOException {
return DECODER.decode(b);
}
/** car_id */
private java.lang.CharSequence _id;
/**
* Default constructor. Note that this does not initialize fields
* to their default values from the schema. If that is desired then
* one should use <code>newBuilder()</code>.
*/
public AvroRecord() {}
/**
* All-args constructor.
* #param _id car_id
*/
public AvroRecord(java.lang.CharSequence _id) {
this._id = _id;
}
public org.apache.avro.specific.SpecificData getSpecificData() { return MODEL$; }
public org.apache.avro.Schema getSchema() { return SCHEMA$; }
// Used by DatumWriter. Applications should not call.
public java.lang.Object get(int field$) {
switch (field$) {
case 0: return _id;
default: throw new IndexOutOfBoundsException("Invalid index: " + field$);
}
}
// Used by DatumReader. Applications should not call.
#SuppressWarnings(value="unchecked")
public void put(int field$, java.lang.Object value$) {
switch (field$) {
case 0: _id = (java.lang.CharSequence)value$; break;
default: throw new IndexOutOfBoundsException("Invalid index: " + field$);
}
}
/**
* Gets the value of the '_id' field.
* #return car_id
*/
public java.lang.CharSequence getId$1() {
return _id;
}
/**
* Sets the value of the '_id' field.
* car_id
* #param value the value to set.
*/
public void setId$1(java.lang.CharSequence value) {
this._id = value;
}
/**
* Creates a new AvroRecord RecordBuilder.
* #return A new AvroRecord RecordBuilder
*/
public static com.sample.dataplatform.stream.avro.AvroRecord.Builder newBuilder() {
return new com.sample.dataplatform.stream.avro.AvroRecord.Builder();
}
/**
* Creates a new AvroRecord RecordBuilder by copying an existing Builder.
* #param other The existing builder to copy.
* #return A new AvroRecord RecordBuilder
*/
public static com.sample.dataplatform.stream.avro.AvroRecord.Builder newBuilder(com.sample.dataplatform.stream.avro.AvroRecord.Builder other) {
if (other == null) {
return new com.sample.dataplatform.stream.avro.AvroRecord.Builder();
} else {
return new com.sample.dataplatform.stream.avro.AvroRecord.Builder(other);
}
}
/**
* Creates a new AvroRecord RecordBuilder by copying an existing AvroRecord instance.
* #param other The existing instance to copy.
* #return A new AvroRecord RecordBuilder
*/
public static com.sample.dataplatform.stream.avro.AvroRecord.Builder newBuilder(com.sample.dataplatform.stream.avro.AvroRecord other) {
if (other == null) {
return new com.sample.dataplatform.stream.avro.AvroRecord.Builder();
} else {
return new com.sample.dataplatform.stream.avro.AvroRecord.Builder(other);
}
}
/**
* RecordBuilder for AvroRecord instances.
*/
#org.apache.avro.specific.AvroGenerated
public static class Builder extends org.apache.avro.specific.SpecificRecordBuilderBase<AvroRecord>
implements org.apache.avro.data.RecordBuilder<AvroRecord> {
/** car_id */
private java.lang.CharSequence _id;
/** Creates a new Builder */
private Builder() {
super(SCHEMA$);
}
/**
* Creates a Builder by copying an existing Builder.
* #param other The existing Builder to copy.
*/
private Builder(com.sample.dataplatform.stream.avro.AvroRecord.Builder other) {
super(other);
if (isValidValue(fields()[0], other._id)) {
this._id = data().deepCopy(fields()[0].schema(), other._id);
fieldSetFlags()[0] = other.fieldSetFlags()[0];
}
}
/**
* Creates a Builder by copying an existing AvroRecord instance
* #param other The existing instance to copy.
*/
private Builder(com.sample.dataplatform.stream.avro.AvroRecord other) {
super(SCHEMA$);
if (isValidValue(fields()[0], other._id)) {
this._id = data().deepCopy(fields()[0].schema(), other._id);
fieldSetFlags()[0] = true;
}
}
/**
* Gets the value of the '_id' field.
* car_id
* #return The value.
*/
public java.lang.CharSequence getId$1() {
return _id;
}
/**
* Sets the value of the '_id' field.
* car_id
* #param value The value of '_id'.
* #return This builder.
*/
public com.sample.dataplatform.stream.avro.AvroRecord.Builder setId$1(java.lang.CharSequence value) {
validate(fields()[0], value);
this._id = value;
fieldSetFlags()[0] = true;
return this;
}
/**
* Checks whether the '_id' field has been set.
* car_id
* #return True if the '_id' field has been set, false otherwise.
*/
public boolean hasId$1() {
return fieldSetFlags()[0];
}
/**
* Clears the value of the '_id' field.
* car_id
* #return This builder.
*/
public com.sample.dataplatform.stream.avro.AvroRecord.Builder clearId$1() {
_id = null;
fieldSetFlags()[0] = false;
return this;
}
#Override
#SuppressWarnings("unchecked")
public AvroRecord build() {
try {
AvroRecord record = new AvroRecord();
record._id = fieldSetFlags()[0] ? this._id : (java.lang.CharSequence) defaultValue(fields()[0]);
return record;
} catch (org.apache.avro.AvroMissingFieldException e) {
throw e;
} catch (java.lang.Exception e) {
throw new org.apache.avro.AvroRuntimeException(e);
}
}
}
#SuppressWarnings("unchecked")
private static final org.apache.avro.io.DatumWriter<AvroRecord>
WRITER$ = (org.apache.avro.io.DatumWriter<AvroRecord>)MODEL$.createDatumWriter(SCHEMA$);
#Override public void writeExternal(java.io.ObjectOutput out)
throws java.io.IOException {
WRITER$.write(this, SpecificData.getEncoder(out));
}
#SuppressWarnings("unchecked")
private static final org.apache.avro.io.DatumReader<AvroRecord>
READER$ = (org.apache.avro.io.DatumReader<AvroRecord>)MODEL$.createDatumReader(SCHEMA$);
#Override public void readExternal(java.io.ObjectInput in)
throws java.io.IOException {
READER$.read(this, SpecificData.getDecoder(in));
}
#Override protected boolean hasCustomCoders() { return true; }
#Override public void customEncode(org.apache.avro.io.Encoder out)
throws java.io.IOException
{
out.writeString(this._id);
}
#Override public void customDecode(org.apache.avro.io.ResolvingDecoder in)
throws java.io.IOException
{
org.apache.avro.Schema.Field[] fieldOrder = in.readFieldOrderIfDiff();
if (fieldOrder == null) {
this._id = in.readString(this._id instanceof Utf8 ? (Utf8)this._id : null);
} else {
for (int i = 0; i < 1; i++) {
switch (fieldOrder[i].pos()) {
case 0:
this._id = in.readString(this._id instanceof Utf8 ? (Utf8)this._id : null);
break;
default:
throw new java.io.IOException("Corrupt ResolvingDecoder.");
}
}
}
}
}
The AVRO schema (.avsc) file looks like this:
{
"namespace": "com.sample.dataplatform.stream.avro",
"type": "record",
"name": "AvroRecord",
"fields": [
{
"name": "_id",
"type": "string",
"doc": "car_id"
}
]
}
Any help is appreciated!

Jackson won't deserialize on org.immutable interface

Following scenario.
Little SpringBoot application with the following classes:
FooDto:
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import java.util.LinkedList;
import java.util.List;
import org.immutables.value.Value;
#Value.Immutable
#JsonDeserialize(builder = FooDto.Builder.class)
public interface FooDto{
#JsonProperty("fee")
String getFee();
#JsonProperty("fii")
String getFii();
#JsonProperty("url")
String getUrl();
#Value.Default
#JsonProperty("values")
default String[] getValues(){
return new String[0];
}
}
FooJsonMapper:
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.File;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import org.springframework.stereotype.Component;
#Component
/*package*/ class FooJsonMapper {
private final ObjectMapper objectMapper;
FooJsonMapper() {
objectMapper = new ObjectMapper();
objectMapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
objectMapper.disable(DeserializationFeature.FAIL_ON_IGNORED_PROPERTIES);
}
public List<FooDto> toDtos(File jsonFile) throws IOException {
return Arrays.asList(objectMapper.readValue(jsonFile, FooDto[].class));
}
}
and a JSON like this:
[
{
"fee":"SOME_MESSAGE",
"fii":"SOME_TECH_MESSAGE",
"url":"/some",
"values":[
"test",
"some"
]
},
{
"fee":"OTHER_MESSAGE",
"fii":"OTHER_TECH_MESSAGE",
"url":"/other",
"values":[
"other",
"some"
]
},
{
"fee":"4711_MESSAGE",
"fii":"4711_TECH_MESSAGE",
"url":"/4711",
"values":[
]
}
]
Somehow when running the code jackson reports the following:
com.fasterxml.jackson.databind.exc.ValueInstantiationException: Cannot construct instance of `org.some.package.ImmutableFooDto$Builder`, problem: Cannot build FooDto, some of required attributes are not set [fee, fii, url]
at [Source: (File); line: 13, column: 3] (through reference chain: java.lang.Object[][0])
at com.fasterxml.jackson.databind.exc.ValueInstantiationException.from(ValueInstantiationException.java:47) ~[jackson-databind-2.12.3.jar:2.12.3]
at com.fasterxml.jackson.databind.DeserializationContext.instantiationException(DeserializationContext.java:1907) ~[jackson-databind-2.12.3.jar:2.12.3]
at com.fasterxml.jackson.databind.DeserializationContext.handleInstantiationProblem(DeserializationContext.java:1260) ~[jackson-databind-2.12.3.jar:2.12.3]
at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.wrapInstantiationProblem(BeanDeserializerBase.java:1865) ~[jackson-databind-2.12.3.jar:2.12.3]
at com.fasterxml.jackson.databind.deser.BuilderBasedDeserializer.finishBuild(BuilderBasedDeserializer.java:202) ~[jackson-databind-2.12.3.jar:2.12.3]
at com.fasterxml.jackson.databind.deser.BuilderBasedDeserializer.deserialize(BuilderBasedDeserializer.java:217) ~[jackson-databind-2.12.3.jar:2.12.3]
at com.fasterxml.jackson.databind.deser.std.ObjectArrayDeserializer.deserialize(ObjectArrayDeserializer.java:214) ~[jackson-databind-2.12.3.jar:2.12.3]
at com.fasterxml.jackson.databind.deser.std.ObjectArrayDeserializer.deserialize(ObjectArrayDeserializer.java:24) ~[jackson-databind-2.12.3.jar:2.12.3]
at com.fasterxml.jackson.databind.deser.DefaultDeserializationContext.readRootValue(DefaultDeserializationContext.java:322) ~[jackson-databind-2.12.3.jar:2.12.3]
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4593) ~[jackson-databind-2.12.3.jar:2.12.3]
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3413) ~[jackson-databind-2.12.3.jar:2.12.3]
at org.some.package.FooJsonMapper.toDtos(FooJsonMapper.java:25) ~[classes/:na]
I can confirm that the json is correct as the following line of code creates Objects with the data in them:
return Arrays.asList(objectMapper.readValue(jsonFile, Object[].class));
I also tried using #Value.Style(builder = "new") at the FooDto.class as sugested here: https://immutables.github.io/json.html
Jackson: 2.12.3
org.immutables: 2.8.2
EDIT:
As Requested the ImmutableDTO with Builder:
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
import javax.annotation.Generated;
/**
* Immutable implementation of {#link FooDto}.
* <p>
* Use the builder to create immutable instances:
* {#code ImmutableFooDto.builder()}.
*/
#SuppressWarnings("all")
#Generated({"Immutables.generator", "FooDto"})
public final class ImmutableFooDto implements FooDto {
private final String fee;
private final String fii;
private final String url;
private final String[] values;
private ImmutableFooDto(ImmutableFooDto.Builder builder) {
this.fee = builder.fee;
this.fii = builder.fii;
this.url = builder.url;
if (builder.values != null) {
initShim.values(builder.values);
}
this.values = initShim.getValues();
this.initShim = null;
}
private ImmutableFooDto(
String fee,
String fii,
String url,
String[] values) {
this.fee = fee;
this.fii = fii;
this.url = url;
this.values = values;
this.initShim = null;
}
private static final int STAGE_INITIALIZING = -1;
private static final int STAGE_UNINITIALIZED = 0;
private static final int STAGE_INITIALIZED = 1;
private transient volatile InitShim initShim = new InitShim();
private final class InitShim {
private String[] values;
private int valuesStage;
String[] getValues() {
if (valuesStage == STAGE_INITIALIZING) throw new IllegalStateException(formatInitCycleMessage());
if (valuesStage == STAGE_UNINITIALIZED) {
valuesStage = STAGE_INITIALIZING;
this.values = getValuesInitialize().clone();
valuesStage = STAGE_INITIALIZED;
}
return this.values;
}
void values(String[] values) {
this.values = values;
valuesStage = STAGE_INITIALIZED;
}
private String formatInitCycleMessage() {
ArrayList<String> attributes = new ArrayList<String>();
if (valuesStage == STAGE_INITIALIZING) attributes.add("values");
return "Cannot build FooDto, attribute initializers form cycle" + attributes;
}
}
private String[] getValuesInitialize() {
return FooDto.super.getValues();
}
/**
* #return The value of the {#code fee} attribute
*/
#JsonProperty("fee")
#Override
public String getFee() {
return fee;
}
/**
* #return The value of the {#code fii} attribute
*/
#JsonProperty("fii")
#Override
public String getFii() {
return fii;
}
/**
* #return The value of the {#code url} attribute
*/
#JsonProperty("url")
#Override
public String getUrl() {
return url;
}
/**
* #return A cloned {#code values} array
*/
#JsonProperty("values")
#Override
public String[] getValues() {
InitShim shim = this.initShim;
return shim != null
? shim.getValues().clone()
: this.values.clone();
}
/**
* Copy the current immutable object by setting a value for the {#link FooDto#getFee() fee} attribute.
* An equals check used to prevent copying of the same value by returning {#code this}.
* #param fee A new value for fee
* #return A modified copy of the {#code this} object
*/
public final ImmutableFooDto withFee(String fee) {
if (this.fee.equals(fee)) return this;
String newValue = Objects.requireNonNull(fee, "fee");
return new ImmutableFooDto(newValue, this.fii, this.url, this.values);
}
/**
* Copy the current immutable object by setting a value for the {#link FooDto#getFii() fii} attribute.
* An equals check used to prevent copying of the same value by returning {#code this}.
* #param fii A new value for fii
* #return A modified copy of the {#code this} object
*/
public final ImmutableFooDto withFii(String fii) {
if (this.fii.equals(fii)) return this;
String newValue = Objects.requireNonNull(fii, "fii");
return new ImmutableFooDto(this.fee, newValue, this.url, this.values);
}
/**
* Copy the current immutable object by setting a value for the {#link FooDto#getUrl() url} attribute.
* An equals check used to prevent copying of the same value by returning {#code this}.
* #param url A new value for url
* #return A modified copy of the {#code this} object
*/
public final ImmutableFooDto withUrl(String url) {
if (this.url.equals(url)) return this;
String newValue = Objects.requireNonNull(url, "url");
return new ImmutableFooDto(this.fee, this.fii, newValue, this.values);
}
/**
* Copy the current immutable object with elements that replace the content of {#link FooDto#getValues() values}.
* The array is cloned before being saved as attribute values.
* #param elements The non-null elements for values
* #return A modified copy of {#code this} object
*/
public final ImmutableFooDto withValues(String... elements) {
String[] newValue = elements.clone();
return new ImmutableFooDto(this.fee, this.fii, this.url, newValue);
}
/**
* This instance is equal to all instances of {#code ImmutableFooDto} that have equal attribute values.
* #return {#code true} if {#code this} is equal to {#code another} instance
*/
#Override
public boolean equals(Object another) {
if (this == another) return true;
return another instanceof ImmutableFooDto
&& equalTo((ImmutableFooDto) another);
}
private boolean equalTo(ImmutableFooDto another) {
return fee.equals(another.fee)
&& fii.equals(another.fii)
&& url.equals(another.url)
&& Arrays.equals(values, another.values);
}
/**
* Computes a hash code from attributes: {#code fee}, {#code fii}, {#code url}, {#code values}, {#code roles}.
* #return hashCode value
*/
#Override
public int hashCode() {
int h = 31;
h = h * 17 + fee.hashCode();
h = h * 17 + fii.hashCode();
h = h * 17 + url.hashCode();
h = h * 17 + Arrays.hashCode(values);
return h;
}
/**
* Prints the immutable value {#code FooDto} with attribute values.
* #return A string representation of the value
*/
#Override
public String toString() {
return "FooDto{"
+ "fee=" + fee
+ ", fii=" + fii
+ ", url=" + url
+ ", values=" + Arrays.toString(values)
+ "}";
}
/**
* Utility type used to correctly read immutable object from JSON representation.
* #deprecated Do not use this type directly, it exists only for the <em>Jackson</em>-binding infrastructure
*/
#Deprecated
#JsonDeserialize
#JsonAutoDetect(fieldVisibility = JsonAutoDetect.Visibility.NONE)
static final class Json implements FooDto {
String fee;
String fii;
String url;
String[] values;
List<String> roles = Collections.emptyList();
boolean rolesIsSet;
#JsonProperty("fee")
public void setFee(String fee) {
this.fee = fee;
}
#JsonProperty("fii")
public void setFii(String fii) {
this.fii = fii;
}
#JsonProperty("url")
public void setUrl(String url) {
this.url = url;
}
#JsonProperty("values")
public void setValues(String[] values) {
this.values = values;
}
#Override
public String getFee() { throw new UnsupportedOperationException(); }
#Override
public String getFii() { throw new UnsupportedOperationException(); }
#Override
public String getUrl() { throw new UnsupportedOperationException(); }
#Override
public String[] getValues() { throw new UnsupportedOperationException(); }
}
/**
* #param json A JSON-bindable data structure
* #return An immutable value type
* #deprecated Do not use this method directly, it exists only for the <em>Jackson</em>-binding infrastructure
*/
#Deprecated
#JsonCreator
static ImmutableFooDto fromJson(Json json) {
ImmutableFooDto.Builder builder = ImmutableFooDto.builder();
if (json.fee != null) {
builder.fee(json.fee);
}
if (json.fii != null) {
builder.fii(json.fii);
}
if (json.url != null) {
builder.url(json.url);
}
if (json.values != null) {
builder.values(json.values);
}
return builder.build();
}
/**
* Creates an immutable copy of a {#link FooDto} value.
* Uses accessors to get values to initialize the new immutable instance.
* If an instance is already immutable, it is returned as is.
* #param instance The instance to copy
* #return A copied immutable FooDto instance
*/
public static ImmutableFooDto copyOf(FooDto instance) {
if (instance instanceof ImmutableFooDto) {
return (ImmutableFooDto) instance;
}
return ImmutableFooDto.builder()
.from(instance)
.build();
}
/**
* Creates a builder for {#link ImmutableFooDto ImmutableFooDto}.
* #return A new ImmutableFooDto builder
*/
public static ImmutableFooDto.Builder builder() {
return new ImmutableFooDto.Builder();
}
/**
* Builds instances of type {#link ImmutableFooDto ImmutableFooDto}.
* Initialize attributes and then invoke the {#link #build()} method to create an
* immutable instance.
* <p><em>{#code Builder} is not thread-safe and generally should not be stored in a field or collection,
* but instead used immediately to create instances.</em>
*/
public static final class Builder {
private static final long INIT_BIT_TITLE = 0x1L;
private static final long INIT_BIT_TECHNICAL_KEY = 0x2L;
private static final long INIT_BIT_URL = 0x4L;
private long initBits = 0x7L;
private long optBits;
private String fee;
private String fii;
private String url;
private String[] values;
private Builder() {
}
/**
* Fill a builder with attribute values from the provided {#code FooDto} instance.
* Regular attribute values will be replaced with those from the given instance.
* Absent optional values will not replace present values.
* Collection elements and entries will be added, not replaced.
* #param instance The instance from which to copy values
* #return {#code this} builder for use in a chained invocation
*/
public final Builder from(FooDto instance) {
Objects.requireNonNull(instance, "instance");
fee(instance.getFee());
fii(instance.getFii());
url(instance.getUrl());
values(instance.getValues());
return this;
}
/**
* Initializes the value for the {#link FooDto#getFee() fee} attribute.
* #param fee The value for fee
* #return {#code this} builder for use in a chained invocation
*/
public final Builder fee(String fee) {
this.fee = Objects.requireNonNull(fee, "fee");
initBits &= ~INIT_BIT_TITLE;
return this;
}
/**
* Initializes the value for the {#link FooDto#getFii() fii} attribute.
* #param fii The value for fii
* #return {#code this} builder for use in a chained invocation
*/
public final Builder fii(String fii) {
this.fii = Objects.requireNonNull(fii, "fii");
initBits &= ~INIT_BIT_TECHNICAL_KEY;
return this;
}
/**
* Initializes the value for the {#link FooDto#getUrl() url} attribute.
* #param url The value for url
* #return {#code this} builder for use in a chained invocation
*/
public final Builder url(String url) {
this.url = Objects.requireNonNull(url, "url");
initBits &= ~INIT_BIT_URL;
return this;
}
/**
* Initializes the value for the {#link FooDto#getValues() values} attribute.
* <p><em>If not set, this attribute will have a default value as defined by {#link FooDto#getValues() values}.</em>
* #param values The elements for values
* #return {#code this} builder for use in a chained invocation
*/
public final Builder values(String... values) {
this.values = values.clone();
return this;
}
/**
* Builds a new {#link ImmutableFooDto ImmutableFooDto}.
* #return An immutable instance of FooDto
* #throws java.lang.IllegalStateException if any required attributes are missing
*/
public ImmutableFooDto build() {
if (initBits != 0) {
throw new IllegalStateException(formatRequiredAttributesMessage());
}
return new ImmutableFooDto(this);
}
private String formatRequiredAttributesMessage() {
List<String> attributes = new ArrayList<String>();
if ((initBits & INIT_BIT_TITLE) != 0) attributes.add("fee");
if ((initBits & INIT_BIT_TECHNICAL_KEY) != 0) attributes.add("fii");
if ((initBits & INIT_BIT_URL) != 0) attributes.add("url");
return "Cannot build FooDto, some of required attributes are not set " + attributes;
}
}
private static <T> List<T> createSafeList(Iterable<? extends T> iterable, boolean checkNulls, boolean skipNulls) {
ArrayList<T> list;
if (iterable instanceof Collection<?>) {
int size = ((Collection<?>) iterable).size();
if (size == 0) return Collections.emptyList();
list = new ArrayList<T>();
} else {
list = new ArrayList<T>();
}
for (T element : iterable) {
if (skipNulls && element == null) continue;
if (checkNulls) Objects.requireNonNull(element, "element");
list.add(element);
}
return list;
}
private static <T> List<T> createUnmodifiableList(boolean clone, List<T> list) {
switch(list.size()) {
case 0: return Collections.emptyList();
case 1: return Collections.singletonList(list.get(0));
default:
if (clone) {
return Collections.unmodifiableList(new ArrayList<T>(list));
} else {
if (list instanceof ArrayList<?>) {
((ArrayList<?>) list).trimToSize();
}
return Collections.unmodifiableList(list);
}
}
}
}

I think the problem is that jackson can't find a way to construct your class.
Here's what works for me
import org.immutables.value.Value;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
#Value.Immutable
#Value.Style(privateNoargConstructor = true) //<<<< this is what you need I think
#JsonSerialize(as = ImmutableVal.class)
#JsonDeserialize(as = ImmutableVal.class)
interface Val {
int a();
#JsonProperty("b")
String second();
}
and
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
public class ValMain {
public static void main(String[] args) throws JsonProcessingException {
ObjectMapper objectMapper = new ObjectMapper();
String json = objectMapper.writeValueAsString(
ImmutableVal.builder()
.a(1)
.second("B")
.build());
System.out.println(json);
//{"a":1,"b":"B"}
Val val = objectMapper.readValue(json, Val.class);
System.out.println(val);
//Val{a=1, second=B}
}
}
Then you can even get rid of the DTOs

Avro generated class issue with json conversion [kotlin]

I'm having a strange issue with marshalling/unmarshalling an avro generated class. The error I'm getting is throwing a not an enum error - except there aren't any enum's in my class.
The error is specifically this:
com.fasterxml.jackson.databind.JsonMappingException: Not an enum: {"type":"record","name":"TimeUpdateTopic","namespace":"org.company.mmd.time","fields":[{"name":"time","type":"double"}]} (through reference chain: org.company.mmd.time.TimeUpdateTopic["schema"]->org.apache.avro.Schema$RecordSchema["enumDefault"])
Test Case
import com.fasterxml.jackson.databind.ObjectMapper
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule
import org.junit.Test
class TimeUpdateTopicTest {
val objectMapper = ObjectMapper().registerModule(JavaTimeModule())
#Test
fun decode() {
val t = TimeUpdateTopic(1.0)
objectMapper.writeValueAsString(t)
}
}
AVDL
#namespace("org.company.mmd.time")
protocol TimeMonitor {
record TimeUpdateTopic {
double time;
}
}
Java class generated by the avro task
/**
* Autogenerated by Avro
*
* DO NOT EDIT DIRECTLY
*/
package org.company.mmd.time;
import org.apache.avro.generic.GenericArray;
import org.apache.avro.specific.SpecificData;
import org.apache.avro.util.Utf8;
import org.apache.avro.message.BinaryMessageEncoder;
import org.apache.avro.message.BinaryMessageDecoder;
import org.apache.avro.message.SchemaStore;
#org.apache.avro.specific.AvroGenerated
public class TimeUpdateTopic extends org.apache.avro.specific.SpecificRecordBase implements org.apache.avro.specific.SpecificRecord {
private static final long serialVersionUID = -4648318619505855037L;
public static final org.apache.avro.Schema SCHEMA$ = new org.apache.avro.Schema.Parser().parse("{\"type\":\"record\",\"name\":\"TimeUpdateTopic\",\"namespace\":\"org.company.mmd.time\",\"fields\":[{\"name\":\"time\",\"type\":\"double\"}]}");
public static org.apache.avro.Schema getClassSchema() { return SCHEMA$; }
private static SpecificData MODEL$ = new SpecificData();
private static final BinaryMessageEncoder<TimeUpdateTopic> ENCODER =
new BinaryMessageEncoder<TimeUpdateTopic>(MODEL$, SCHEMA$);
private static final BinaryMessageDecoder<TimeUpdateTopic> DECODER =
new BinaryMessageDecoder<TimeUpdateTopic>(MODEL$, SCHEMA$);
/**
* Return the BinaryMessageEncoder instance used by this class.
* #return the message encoder used by this class
*/
public static BinaryMessageEncoder<TimeUpdateTopic> getEncoder() {
return ENCODER;
}
/**
* Return the BinaryMessageDecoder instance used by this class.
* #return the message decoder used by this class
*/
public static BinaryMessageDecoder<TimeUpdateTopic> getDecoder() {
return DECODER;
}
/**
* Create a new BinaryMessageDecoder instance for this class that uses the specified {#link SchemaStore}.
* #param resolver a {#link SchemaStore} used to find schemas by fingerprint
* #return a BinaryMessageDecoder instance for this class backed by the given SchemaStore
*/
public static BinaryMessageDecoder<TimeUpdateTopic> createDecoder(SchemaStore resolver) {
return new BinaryMessageDecoder<TimeUpdateTopic>(MODEL$, SCHEMA$, resolver);
}
/**
* Serializes this TimeUpdateTopic to a ByteBuffer.
* #return a buffer holding the serialized data for this instance
* #throws java.io.IOException if this instance could not be serialized
*/
public java.nio.ByteBuffer toByteBuffer() throws java.io.IOException {
return ENCODER.encode(this);
}
/**
* Deserializes a TimeUpdateTopic from a ByteBuffer.
* #param b a byte buffer holding serialized data for an instance of this class
* #return a TimeUpdateTopic instance decoded from the given buffer
* #throws java.io.IOException if the given bytes could not be deserialized into an instance of this class
*/
public static TimeUpdateTopic fromByteBuffer(
java.nio.ByteBuffer b) throws java.io.IOException {
return DECODER.decode(b);
}
#Deprecated public double time;
/**
* Default constructor. Note that this does not initialize fields
* to their default values from the schema. If that is desired then
* one should use <code>newBuilder()</code>.
*/
public TimeUpdateTopic() {}
/**
* All-args constructor.
* #param time The new value for time
*/
public TimeUpdateTopic(java.lang.Double time) {
this.time = time;
}
public org.apache.avro.specific.SpecificData getSpecificData() { return MODEL$; }
public org.apache.avro.Schema getSchema() { return SCHEMA$; }
// Used by DatumWriter. Applications should not call.
public java.lang.Object get(int field$) {
switch (field$) {
case 0: return time;
default: throw new org.apache.avro.AvroRuntimeException("Bad index");
}
}
// Used by DatumReader. Applications should not call.
#SuppressWarnings(value="unchecked")
public void put(int field$, java.lang.Object value$) {
switch (field$) {
case 0: time = (java.lang.Double)value$; break;
default: throw new org.apache.avro.AvroRuntimeException("Bad index");
}
}
/**
* Gets the value of the 'time' field.
* #return The value of the 'time' field.
*/
public double getTime() {
return time;
}
/**
* Sets the value of the 'time' field.
* #param value the value to set.
*/
public void setTime(double value) {
this.time = value;
}
/**
* Creates a new TimeUpdateTopic RecordBuilder.
* #return A new TimeUpdateTopic RecordBuilder
*/
public static org.company.mmd.time.TimeUpdateTopic.Builder newBuilder() {
return new org.company.mmd.time.TimeUpdateTopic.Builder();
}
/**
* Creates a new TimeUpdateTopic RecordBuilder by copying an existing Builder.
* #param other The existing builder to copy.
* #return A new TimeUpdateTopic RecordBuilder
*/
public static org.company.mmd.time.TimeUpdateTopic.Builder newBuilder(org.company.mmd.time.TimeUpdateTopic.Builder other) {
if (other == null) {
return new org.company.mmd.time.TimeUpdateTopic.Builder();
} else {
return new org.company.mmd.time.TimeUpdateTopic.Builder(other);
}
}
/**
* Creates a new TimeUpdateTopic RecordBuilder by copying an existing TimeUpdateTopic instance.
* #param other The existing instance to copy.
* #return A new TimeUpdateTopic RecordBuilder
*/
public static org.company.mmd.time.TimeUpdateTopic.Builder newBuilder(org.company.mmd.time.TimeUpdateTopic other) {
if (other == null) {
return new org.company.mmd.time.TimeUpdateTopic.Builder();
} else {
return new org.company.mmd.time.TimeUpdateTopic.Builder(other);
}
}
/**
* RecordBuilder for TimeUpdateTopic instances.
*/
public static class Builder extends org.apache.avro.specific.SpecificRecordBuilderBase<TimeUpdateTopic>
implements org.apache.avro.data.RecordBuilder<TimeUpdateTopic> {
private double time;
/** Creates a new Builder */
private Builder() {
super(SCHEMA$);
}
/**
* Creates a Builder by copying an existing Builder.
* #param other The existing Builder to copy.
*/
private Builder(org.company.mmd.time.TimeUpdateTopic.Builder other) {
super(other);
if (isValidValue(fields()[0], other.time)) {
this.time = data().deepCopy(fields()[0].schema(), other.time);
fieldSetFlags()[0] = other.fieldSetFlags()[0];
}
}
/**
* Creates a Builder by copying an existing TimeUpdateTopic instance
* #param other The existing instance to copy.
*/
private Builder(org.company.mmd.time.TimeUpdateTopic other) {
super(SCHEMA$);
if (isValidValue(fields()[0], other.time)) {
this.time = data().deepCopy(fields()[0].schema(), other.time);
fieldSetFlags()[0] = true;
}
}
/**
* Gets the value of the 'time' field.
* #return The value.
*/
public double getTime() {
return time;
}
/**
* Sets the value of the 'time' field.
* #param value The value of 'time'.
* #return This builder.
*/
public org.company.mmd.time.TimeUpdateTopic.Builder setTime(double value) {
validate(fields()[0], value);
this.time = value;
fieldSetFlags()[0] = true;
return this;
}
/**
* Checks whether the 'time' field has been set.
* #return True if the 'time' field has been set, false otherwise.
*/
public boolean hasTime() {
return fieldSetFlags()[0];
}
/**
* Clears the value of the 'time' field.
* #return This builder.
*/
public org.company.mmd.time.TimeUpdateTopic.Builder clearTime() {
fieldSetFlags()[0] = false;
return this;
}
#Override
#SuppressWarnings("unchecked")
public TimeUpdateTopic build() {
try {
TimeUpdateTopic record = new TimeUpdateTopic();
record.time = fieldSetFlags()[0] ? this.time : (java.lang.Double) defaultValue(fields()[0]);
return record;
} catch (org.apache.avro.AvroMissingFieldException e) {
throw e;
} catch (java.lang.Exception e) {
throw new org.apache.avro.AvroRuntimeException(e);
}
}
}
#SuppressWarnings("unchecked")
private static final org.apache.avro.io.DatumWriter<TimeUpdateTopic>
WRITER$ = (org.apache.avro.io.DatumWriter<TimeUpdateTopic>)MODEL$.createDatumWriter(SCHEMA$);
#Override public void writeExternal(java.io.ObjectOutput out)
throws java.io.IOException {
WRITER$.write(this, SpecificData.getEncoder(out));
}
#SuppressWarnings("unchecked")
private static final org.apache.avro.io.DatumReader<TimeUpdateTopic>
READER$ = (org.apache.avro.io.DatumReader<TimeUpdateTopic>)MODEL$.createDatumReader(SCHEMA$);
#Override public void readExternal(java.io.ObjectInput in)
throws java.io.IOException {
READER$.read(this, SpecificData.getDecoder(in));
}
#Override protected boolean hasCustomCoders() { return true; }
#Override public void customEncode(org.apache.avro.io.Encoder out)
throws java.io.IOException
{
out.writeDouble(this.time);
}
#Override public void customDecode(org.apache.avro.io.ResolvingDecoder in)
throws java.io.IOException
{
org.apache.avro.Schema.Field[] fieldOrder = in.readFieldOrderIfDiff();
if (fieldOrder == null) {
this.time = in.readDouble();
} else {
for (int i = 0; i < 1; i++) {
switch (fieldOrder[i].pos()) {
case 0:
this.time = in.readDouble();
break;
default:
throw new java.io.IOException("Corrupt ResolvingDecoder.");
}
}
}
}
}
Am I doing something stupid and/or wrong here? Or is this an actual bug
Updates
I'm able to get JSON out using this function:
inline fun <reified T: SpecificRecordBase> StringFromAvroGenerated(obj: T) : String {
val schema = obj.schema
val writer = SpecificDatumWriter(T::class.java)
val stream = ByteArrayOutputStream()
var jsonEncoder = EncoderFactory.get().jsonEncoder(schema, stream)
writer.write(obj, jsonEncoder)
jsonEncoder.flush()
return stream.toString("UTF-8")
}
but I was assuming this should be automatic with Jackson

So it appears there are two ways to solve my issues (thanks to JsonMappingException when serializing avro generated object to json)
Write a Jackson MixIn to handle the getSchema call
So the first option required me to create a Mixin such as this:
abstract class AvroMixIn {
#JsonIgnore
abstract fun getSchema(): org.apache.avro.Schema
#JsonIgnore
abstract fun getSpecificData() : org.apache.avro.specific.SpecificData
}
And then when i make an object mapper:
val objectMapper = ObjectMapper()
.registerModule(JavaTimeModule())
.addMixIn(Object::class.java, AvroMixIn::class.java)
I chose Object::class.java instead of the actual class because it should apply to all classes. Probably a better solution is to apply it to a shared base-class all the AvroGenerated stuff has.
Rewrite the Avro Velocity Templates to automatically add this
This is actually the 1st approach I took because it seemed more "seemless".
1) Check out the avro project
2) Copy enum.vm, fixed.vm, protocol.vm, record.vm into a /avro_templates directory off the main root of my project
3) Add the #com.fasterxml.jackson.annotation.JsonIgnore property to the template:
#end
#com.fasterxml.jackson.annotation.JsonIgnore
public org.apache.avro.specific.SpecificData getSpecificData() { return MODEL$; }
#com.fasterxml.jackson.annotation.JsonIgnore
public org.apache.avro.Schema getSchema() { return SCHEMA$; }
// Used by DatumWriter. Applications should not call.
4) Update the gradle task:
avro {
dateTimeLogicalType="JSR310"
templateDirectory = "avro_templates/"
}
5) re-build avro classes
(everything now works)

Cannot set value on more than one object [closed]

Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.
This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers.
Closed 5 years ago.
Improve this question
I have an object I created called annuals... i have getters and setters for this object and it implements comparable. When I create multiples of this object to add to a list, I end up with one object with values but all subsequent objects are have null values. How do I prevent this? Code is blow broken down by object and creating object.
Thanks in advance...
Object:
import java.math.BigDecimal;
import java.util.Comparator;
import java.util.Date;
/**
* #author
*
*/
public class Annuals implements Comparable<Annuals>
{
private BigDecimal value;
private Date dateCalculated;
private BigDecimal dataYear;
private String type;
/**
* #return the value
*/
public BigDecimal getValue()
{
return value;
}
/**
* #param value the value to set
*/
public void setValue(BigDecimal value)
{
this.value = value;
}
/**
* #return the dateCalculated
*/
public Date getDateCalculated()
{
return dateCalculated;
}
/**
* #param dateCalculated the dateCalculated to set
*/
public void setDateCalculated(Date dateCalculated)
{
this.dateCalculated = dateCalculated;
}
/**
* #return the dataYear
*/
public BigDecimal getDataYear()
{
return dataYear;
}
/**
* #param dataYear the dataYear to set
*/
public void setDataYear(BigDecimal dataYear)
{
this.dataYear = dataYear;
}
/**
* #return the type
*/
public String getType()
{
return type;
}
/**
* #param type the type to set
*/
public void setType(String type)
{
this.type = type;
}
/* (non-Javadoc)
* #see java.lang.Object#toString()
*/
#Override
public String toString()
{
return "Annuals [value=" + value + ", dateCalculated=" + dateCalculated + ", dataYear=" + dataYear + ", type="
+ type + "]";
}
public static Comparator<Annuals> yearComparator = new Comparator<Annuals>()
{
#Override
public int compare(Annuals o1, Annuals o2)
{
return o1.getDataYear().compareTo(o2.getDataYear());
}
};
#Override
public int compareTo(Annuals o)
{
return this.value.compareTo(o.value);
}
}
Creating Object:
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
public class CreateCompanies
{
private List<CompanyInfoDO> companiesList = new ArrayList<CompanyInfoDO>();
/**
* #return the companiesList
*/
public List<CompanyInfoDO> getCompaniesList()
{
return companiesList;
}
/**
* #param companiesList the companiesList to set
*/
public void setCompaniesList(List<CompanyInfoDO> companiesList)
{
this.companiesList = companiesList;
}
public CreateCompanies()
{
CompanyInfoDO company = new CompanyInfoDO();
company.setCompanyName("Ford");
company.setDate(Calendar.getInstance().getTime().toString());
company.setShares("39000000000");
company.setTicker("f");
company.setStockPrice(BigDecimal.valueOf(11.14));
company.setTotalOutstandingSharesAnnuals(getTotalSharesOutstandingList());
company.setNetIncomeAnnuals(getNetIncomeList());
companiesList.add(company);
}
private List<Annuals> getTotalSharesOutstandingList()
{
List<Annuals> annualsList = new ArrayList<Annuals>();
Annuals annual = new Annuals();
annual.setDataYear(BigDecimal.valueOf(2013));
annual.setValue(BigDecimal.valueOf(3984.0));
annual.setType(InvestConstants.TOTAL_SHARES_OUTSTANDING);
Annuals annual1 = new Annuals();
annual.setDataYear(BigDecimal.valueOf(2014));
annual.setValue(BigDecimal.valueOf(4009.0));
annual.setType(InvestConstants.TOTAL_SHARES_OUTSTANDING);
Annuals annual2 = new Annuals();
annual.setDataYear(BigDecimal.valueOf(2015));
annual.setValue(BigDecimal.valueOf(4031.0));
annual.setType(InvestConstants.TOTAL_SHARES_OUTSTANDING);
Annuals annual3 = new Annuals();
annual.setDataYear(BigDecimal.valueOf(2016));
annual.setValue(BigDecimal.valueOf(3931.0));
annual.setType(InvestConstants.TOTAL_SHARES_OUTSTANDING);
annualsList.add(annual);
annualsList.add(annual1);
annualsList.add(annual2);
annualsList.add(annual3);
return annualsList;
}
private List<Annuals> getNetIncomeList()
{
List<Annuals> annualsList = new ArrayList<Annuals>();
Annuals annual = new Annuals();
annual.setDateCalculated(Calendar.getInstance().getTime());
annual.setType(InvestConstants.NET_INCOME);
annual.setValue(BigDecimal.valueOf(11953.0));
annual.setDataYear(BigDecimal.valueOf(2013));
System.out.println("Annual: "+ annual.toString());
annualsList.add(annual);
Annuals annual2 = new Annuals();
annual.setDateCalculated(Calendar.getInstance().getTime());
annual.setType(InvestConstants.NET_INCOME);
annual.setValue(new BigDecimal(1231.0));
BigDecimal val2 = new BigDecimal(2014);
annual.setDataYear(val2);
System.out.println("Annual 2 : "+ annual2.toString());
Annuals annual3 = new Annuals();
annual.setDateCalculated(Calendar.getInstance().getTime());
annual.setType(InvestConstants.NET_INCOME);
annual.setValue(BigDecimal.valueOf(7373.0));
annual.setDataYear(BigDecimal.valueOf(2015));
Annuals annual4 = new Annuals();
annual.setDateCalculated(Calendar.getInstance().getTime());
annual.setType(InvestConstants.NET_INCOME);
annual.setValue(BigDecimal.valueOf(4596.0));
annual.setDataYear(BigDecimal.valueOf(2016));
//annualsList.add(annual);
annualsList.add(annual2);
annualsList.add(annual3);
annualsList.add(annual4);
System.out.println("Net Annuals List: Creating Company: "+annualsList.toString());
return annualsList;
}

Annuals annual1 = new Annuals();
annual.setDataYear(BigDecimal.valueOf(2014));
annual.setValue(BigDecimal.valueOf(4009.0));
annual.setType(InvestConstants.TOTAL_SHARES_OUTSTANDING);
You are creating new instances named annual1, annual2 and so on - but only ever modify annual.

You're reusing always the same variable annual.
Pay attention to your code, after creating a new instance of Annual and assigning the instance to a variable annual1 or annual2 you're reusing the old variable annual.
Annuals annual1 = new Annuals();
annual.setDataYear(BigDecimal.valueOf(2014));

Why PageableListView doesn't have constructor without model or list

In my application I need pageableListView combine with propertyListView. I just wonder why pageableListView doesnt have contructor without model or list. I just create new class which extend propertyListView and have body with pageableListView and one additional constructor just with string = id and number of rows. Now it looking good and also it work. Did I miss something that this shouldnt work sometimes ?
package org.toursys.web.components;
import java.util.List;
import org.apache.wicket.markup.html.list.ListView;
import org.apache.wicket.markup.html.list.PropertyListView;
import org.apache.wicket.model.IModel;
public abstract class PropertyPageableListView<T> extends PropertyListView<T> implements IPageableItems {
private static final long serialVersionUID = 1L;
/** The page to show. */
private int currentPage;
/** Number of rows per page of the list view. */
private int itemsPerPage;
/**
* Constructor
*
* #param id
* See Component
* #param model
* See Component
* #param itemsPerPage
* Number of rows to show on a page
*/
public PropertyPageableListView(final String id, int itemsPerPage) {
super(id);
this.itemsPerPage = itemsPerPage;
}
/**
* Constructor
*
* #param id
* See Component
* #param model
* See Component
* #param itemsPerPage
* Number of rows to show on a page
*/
public PropertyPageableListView(final String id, final IModel<? extends List<? extends T>> model, int itemsPerPage) {
super(id, model);
this.itemsPerPage = itemsPerPage;
}
/**
* Creates a pageable list view having the given number of rows per page that uses the provided object as a simple
* model.
*
* #param id
* See Component
* #param list
* See Component
* #param itemsPerPage
* Number of rows to show on a page
* #see ListView#ListView(String, List)
*/
public PropertyPageableListView(final String id, final List<? extends T> list, final int itemsPerPage) {
super(id, list);
this.itemsPerPage = itemsPerPage;
}
/**
* Gets the index of the current page being displayed by this list view.
*
* #return Returns the currentPage.
*/
public final int getCurrentPage() {
// If first cell is out of range, bring page back into range
while ((currentPage > 0) && ((currentPage * itemsPerPage) >= getItemCount())) {
currentPage--;
}
return currentPage;
}
/**
* Gets the number of pages in this list view.
*
* #return The number of pages in this list view
*/
public final int getPageCount() {
return ((getItemCount() + itemsPerPage) - 1) / itemsPerPage;
}
/**
* Gets the maximum number of rows on each page.
*
* #return the maximum number of rows on each page.
*/
public final int getItemsPerPage() {
return itemsPerPage;
}
/**
* Sets the maximum number of rows on each page.
*
* #param itemsPerPage
* the maximum number of rows on each page.
*/
public final void setItemsPerPage(int itemsPerPage) {
if (itemsPerPage < 0) {
itemsPerPage = 0;
}
addStateChange();
this.itemsPerPage = itemsPerPage;
}
/**
* #return offset of first item
*/
public int getFirstItemOffset() {
return getCurrentPage() * getItemsPerPage();
}
/**
* #see org.apache.wicket.markup.html.navigation.paging.IPageableItems#getItemCount()
*/
public int getItemCount() {
return getList().size();
}
/**
* #see org.apache.wicket.markup.html.list.ListView#getViewSize()
*/
#Override
public int getViewSize() {
if (getDefaultModelObject() != null) {
super.setStartIndex(getFirstItemOffset());
super.setViewSize(getItemsPerPage());
}
return super.getViewSize();
}
/**
* Sets the current page that this list view should show.
*
* #param currentPage
* The currentPage to set.
*/
public final void setCurrentPage(int currentPage) {
if (currentPage < 0) {
currentPage = 0;
}
int pageCount = getPageCount();
if ((currentPage > 0) && (currentPage >= pageCount)) {
currentPage = pageCount - 1;
}
addStateChange();
this.currentPage = currentPage;
}
/**
* Prevent users from accidentally using it.
*
* #see org.apache.wicket.markup.html.list.ListView#setStartIndex(int)
* #throws UnsupportedOperationException
* always
*/
#Override
public ListView<T> setStartIndex(int startIndex) throws UnsupportedOperationException {
throw new UnsupportedOperationException("You must not use setStartIndex() with PageableListView");
}
/**
* Prevent users from accidentally using it.
*
* #param size
* the view size
* #return This
* #throws UnsupportedOperationException
* always
* #see org.apache.wicket.markup.html.list.ListView#setStartIndex(int)
*/
#Override
public ListView<T> setViewSize(int size) throws UnsupportedOperationException {
throw new UnsupportedOperationException("You must not use setViewSize() with PageableListView");
}
}

It would be easier for you to extend PageableListView and just add one method to make it work like PropertyListView:
/**
* Wraps a ListItemModel in a CompoundPropertyModel.
*
* #param model
* #param index
* #return a CompoundPropertyModel wrapping a ListItemModel
*/
#Override
protected IModel<T> getListItemModel(final IModel<? extends List<T>> model, final int index)
{
return new CompoundPropertyModel<T>(super.getListItemModel(model, index));
}
You can file a RFE for the additional constructor too.

We Keep Coding

Java is a programming language and computing platform first released by Sun Microsystems in 1995.

generate all set/get for an object - java

Open the MettreAJourPersonne-Source in eclipse and press ALT-SHIFT-S then on Generate Getter/Setter and configure your wishes.

press ALT+SHIFT+s then press r , select variable which u want to create setter and getter methods.

Right click on eclipse coding window ->select "source" option -> click on Generate setter and getter option. you can generate easily all properties setter getter methods.

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