org.springframework.batch.item.data

Class Neo4jItemReader<T>

java.lang.Object

org.springframework.batch.item.ItemStreamSupport

org.springframework.batch.item.support.AbstractItemStreamItemReader<T>

org.springframework.batch.item.support.AbstractItemCountingItemStreamItemReader<T>

org.springframework.batch.item.data.AbstractPaginatedDataItemReader<T>

org.springframework.batch.item.data.AbstractNeo4jItemReader

org.springframework.batch.item.data.Neo4jItemReader<T>

All Implemented Interfaces:

ItemReader, ItemStream, ItemStreamReader, org.springframework.beans.factory.InitializingBean

public class Neo4jItemReader<T>
extends AbstractNeo4jItemReader

Extensions of the AbstractNeo4jItemReader intended for use with versions of Spring Data Neo4J < 4. Conversions of the results are done using an external ResultConverter.

Author:

Michael Minella

See Also:

Neo4j4ItemReader

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.commons.logging.Log	logger

Fields inherited from class org.springframework.batch.item.data.AbstractPaginatedDataItemReader

page, pageSize, results

Constructor Summary

Constructors

Constructor and Description
Neo4jItemReader()

Method Summary

Modifier and Type	Method and Description
protected java.util.Iterator<T>	doPageRead() Method this ItemStreamReader delegates to for the actual work of reading a page.
void	setResultConverter(org.springframework.data.neo4j.conversion.ResultConverter<java.util.Map<java.lang.String,java.lang.Object>,T> resultConverter) Set the converter used to convert node to the targetType.

Methods inherited from class org.springframework.batch.item.data.AbstractNeo4jItemReader

afterPropertiesSet, generateLimitCypherQuery, getParameterValues, getTargetType, getTemplate, setMatchStatement, setOrderByStatement, setParameterValues, setReturnStatement, setStartStatement, setTargetType, setTemplate, setWhereStatement

Methods inherited from class org.springframework.batch.item.data.AbstractPaginatedDataItemReader

doClose, doOpen, doRead, jumpToItem, setPageSize

Methods inherited from class org.springframework.batch.item.support.AbstractItemCountingItemStreamItemReader

close, getCurrentItemCount, isSaveState, open, read, setCurrentItemCount, setMaxItemCount, setSaveState, update

Methods inherited from class org.springframework.batch.item.ItemStreamSupport

getExecutionContextKey, setExecutionContextName, setName

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected org.apache.commons.logging.Log logger

Constructor Detail

Neo4jItemReader

public Neo4jItemReader()

Method Detail

setResultConverter

public void setResultConverter(org.springframework.data.neo4j.conversion.ResultConverter<java.util.Map<java.lang.String,java.lang.Object>,T> resultConverter)

Set the converter used to convert node to the targetType. By default, DefaultConverter is used.

Parameters:

resultConverter - the converter to use.

doPageRead

protected java.util.Iterator<T> doPageRead()

Description copied from class: AbstractPaginatedDataItemReader

Method this ItemStreamReader delegates to for the actual work of reading a page. Each time this method is called, the resulting Iterator should contain the items read within the next page.

If the Iterator is empty or null when it is returned, this ItemReader will assume that the input has been exhausted.

Specified by:

doPageRead in class AbstractPaginatedDataItemReader

Returns:

an Iterator containing the items within a page.