org.jberet.support.io

Class ArrayItemReader

java.lang.Object

org.jberet.support.io.ItemReaderWriterBase

org.jberet.support.io.JsonItemReaderWriterBase

org.jberet.support.io.JsonItemReader

org.jberet.support.io.ArrayItemReader

All Implemented Interfaces:

javax.batch.api.chunk.ItemReader

@Named
 @Dependent
public class ArrayItemReader
extends JsonItemReader

An implementation of javax.batch.api.chunk.ItemReader that reads from an array of data. The input ItemReaderWriterBase.resource may be specified as a url or path to external resource, or an inlined content. In either case, the array resource content should be enclosed inside []. For example,

 <property name="resource" value='["a", "b", "c"]'/>

 <property name="resource" value="[1, 2, 3]"/>
 <property name="beanType" value="java.lang.Integer"/>

 <property name="resource" value="movies-2012.json"/>
 <property name="beanType" value="org.jberet.support.io.Movie"/>

 <property name="beanType" value="org.jberet.support.io.Movie"/>
 <property name="resource" value='[
 {"rank" : 1, "tit" : "Number One", "grs" : 1000, "opn" : "2017-01-01"},
 {"rank" : 2, "tit" : "Number Two", "grs" : 2000, "opn" : "2017-02-02"},
 {"rank" : 3, "tit" : "Number Three", "grs" : 3000, "opn" : "2017-03-03"},
 {"rank" : 4, "tit" : "Number Four", "grs" : 4000, "opn" : "2017-04-04"},
 {"rank" : 5, "tit" : "Number Five", "grs" : 5000, "opn" : "2017-05-05"}
 ]'/>
 

The default data type is String, and JsonItemReader.beanType batch property can be used to specify the intended data type, which can be String, any primitive wrapper type, or custom POJO.

Since:

1.3.0.Beta6

Field Summary

Fields inherited from class org.jberet.support.io.JsonItemReader

beanType, deserializationProblemHandlers, end, inputDecorator, jsonParser, jsonParserFeatures, rowNumber, start

Fields inherited from class org.jberet.support.io.JsonItemReaderWriterBase

customDataTypeModules, customDeserializers, customSerializers, deserializationFeatures, jsonFactory, jsonFactoryFeatures, jsonFactoryLookup, mapperFeatures, objectMapper, serializationFeatures

Fields inherited from class org.jberet.support.io.ItemReaderWriterBase

NEW_LINE, resource, skipBeanValidation

Constructor Summary

Constructors

Constructor and Description
ArrayItemReader()

Method Summary

Modifier and Type	Method and Description
void	open(Serializable checkpoint)
Object	readItem()

Methods inherited from class org.jberet.support.io.JsonItemReader

checkpointInfo, close, configureJsonParser

Methods inherited from class org.jberet.support.io.JsonItemReaderWriterBase

initJsonFactory, initJsonFactoryAndObjectMapper, registerModule

Methods inherited from class org.jberet.support.io.ItemReaderWriterBase

getInputStream, getOutputStream, getValidator, validate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ArrayItemReader

public ArrayItemReader()

Method Detail

open

public void open(Serializable checkpoint)
          throws Exception

Specified by:

open in interface javax.batch.api.chunk.ItemReader

Overrides:

open in class JsonItemReader

Throws:

Exception

readItem

public Object readItem()
                throws Exception

Specified by:

readItem in interface javax.batch.api.chunk.ItemReader

Overrides:

readItem in class JsonItemReader

Throws:

Exception