Package ca.uhn.fhir.jpa.batch.reader

Class CronologicalBatchAllResourcePidReader

java.lang.Object

ca.uhn.fhir.jpa.batch.reader.CronologicalBatchAllResourcePidReader

All Implemented Interfaces:

org.springframework.batch.item.ItemReader<List<Long>>, org.springframework.batch.item.ItemStream

public class CronologicalBatchAllResourcePidReader
extends Object
implements org.springframework.batch.item.ItemReader<List<Long>>, org.springframework.batch.item.ItemStream

This Spring Batch reader takes 3 parameters: JOB_PARAM_BATCH_SIZE: The number of resources to return with each search. JOB_PARAM_START_TIME: The latest timestamp of resources to search for JOB_PARAM_REQUEST_PARTITION: (optional) The partition of resources to read

The reader will return at most JOB_PARAM_BATCH_SIZE pids every time it is called, or null once no more matching resources are available. It returns the resources in reverse chronological order appended with "." and the index number of the url list item it has gotten up to. This is to permit restarting jobs that use this reader so it can pick up where it left off.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	CURRENT_THRESHOLD_LOW
static final String	JOB_PARAM_BATCH_SIZE
static final String	JOB_PARAM_REQUEST_PARTITION
static final String	JOB_PARAM_START_TIME

Constructor Summary

Constructors

Constructor	Description
CronologicalBatchAllResourcePidReader()

Method Summary

Modifier and Type	Method	Description
static org.springframework.batch.core.JobParameters	buildJobParameters(Integer theBatchSize, ca.uhn.fhir.interceptor.model.RequestPartitionId theRequestPartitionId)
void	close()
void	open(org.springframework.batch.item.ExecutionContext executionContext)
List<Long>	read()
void	setBatchSize(Integer theBatchSize)
void	setRequestPartitionId(String theRequestPartitionIdJson)
void	setStartTime(Date theStartTime)
void	update(org.springframework.batch.item.ExecutionContext executionContext)

Methods inherited from class java.lang.Object

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

Field Details

JOB_PARAM_BATCH_SIZE

public static final String JOB_PARAM_BATCH_SIZE

See Also:

• Constant Field Values

JOB_PARAM_START_TIME

public static final String JOB_PARAM_START_TIME

See Also:

• Constant Field Values

JOB_PARAM_REQUEST_PARTITION

public static final String JOB_PARAM_REQUEST_PARTITION

See Also:

• Constant Field Values

CURRENT_THRESHOLD_LOW

public static final String CURRENT_THRESHOLD_LOW

See Also:

• Constant Field Values

Constructor Details

CronologicalBatchAllResourcePidReader

public CronologicalBatchAllResourcePidReader()

Method Details

setBatchSize

@Autowired
public void setBatchSize(@Value("#{jobParameters[\'batch-size\']}")
 Integer theBatchSize)

setStartTime

@Autowired
public void setStartTime(@Value("#{jobParameters[\'start-time\']}")
 Date theStartTime)

buildJobParameters

public static org.springframework.batch.core.JobParameters buildJobParameters(Integer theBatchSize,
 ca.uhn.fhir.interceptor.model.RequestPartitionId theRequestPartitionId)

read

public List<Long> read()
                throws Exception

Specified by:

read in interface org.springframework.batch.item.ItemReader<List<Long>>

Throws:

Exception

open

public void open(org.springframework.batch.item.ExecutionContext executionContext)
          throws org.springframework.batch.item.ItemStreamException

Specified by:

open in interface org.springframework.batch.item.ItemStream

Throws:

org.springframework.batch.item.ItemStreamException

update

public void update(org.springframework.batch.item.ExecutionContext executionContext)
            throws org.springframework.batch.item.ItemStreamException

Specified by:

update in interface org.springframework.batch.item.ItemStream

Throws:

org.springframework.batch.item.ItemStreamException

close

public void close()
           throws org.springframework.batch.item.ItemStreamException

Specified by:

close in interface org.springframework.batch.item.ItemStream

Throws:

org.springframework.batch.item.ItemStreamException

setRequestPartitionId

@Autowired
public void setRequestPartitionId(@Value("#{jobParameters[\'request-partition\']}")
 String theRequestPartitionIdJson)
                           throws com.fasterxml.jackson.core.JsonProcessingException

Throws:

com.fasterxml.jackson.core.JsonProcessingException