com.neurosys.dao.jpa

Class JPAExecuteTransformer

java.lang.Object

com.neurosys.dao.jpa.EntityManagerLookupAware

com.neurosys.dao.jpa.JPAExecuteTransformer

All Implemented Interfaces:

UpdatableContext<javax.persistence.EntityManager>, Serializable, org.apache.commons.collections.Transformer

public class JPAExecuteTransformer
extends EntityManagerLookupAware
implements org.apache.commons.collections.Transformer, Serializable

Fire any JPA DML and return the number of records affected. Any params supplied as an Object array will be applied sequentially. If The query uses parameters then it should put the params ?1, ?2 etc where each param corresponds to the array elements in order left to right. (0 to size-1 of array)

If the input is not an Array or Collection and a fieldMapping is provided then, it expects the input to be an Object and it can take parameter names defined and map it to the fields in the mapping. TODO: Add Unit test case

Author:

Arjun Dhar

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Map<String,?>	fieldMapping Map from query param name to field name or Transformer that will act on input to get param value.
protected String	query
protected boolean	queryIsNative If the Query is to be fired in JPA or native DB SQL language

Constructor Summary

Constructors

Constructor and Description
JPAExecuteTransformer()
JPAExecuteTransformer(String query)

Method Summary

Modifier and Type	Method and Description
Map<String,?>	getFieldMapping() Map from query param name to field name or Transformer that will act on input to get param value.
String	getQuery()
boolean	isQueryIsNative() If the Query is to be fired in JPA or native DB SQL language
void	setFieldMapping(Map<String,?> fieldMapping) Map from query param name to field name or Transformer that will act on input to get param value.
void	setQuery(String query)
void	setQueryIsNative(boolean queryIsNative) If the Query is to be fired in JPA or native DB SQL language
Object	transform(Object input)

Methods inherited from class com.neurosys.dao.jpa.EntityManagerLookupAware

getEntityManager, getEntityManagerProvider, setEntityManager, setEntityManagerProvider, updateContext

Methods inherited from class java.lang.Object

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

Field Detail

query

protected String query

queryIsNative

protected boolean queryIsNative

If the Query is to be fired in JPA or native DB SQL language

Default value:

false

fieldMapping

protected Map<String,?> fieldMapping

Map from query param name to field name or Transformer that will act on input to get param value. Used incase parameters are names and the input is not an Object[]

Constructor Detail

JPAExecuteTransformer

public JPAExecuteTransformer()

JPAExecuteTransformer

public JPAExecuteTransformer(String query)

Method Detail

transform

@Transactional(readOnly=false)
public Object transform(Object input)

Specified by:

transform in interface org.apache.commons.collections.Transformer

getQuery

public String getQuery()

setQuery

public void setQuery(String query)

isQueryIsNative

public boolean isQueryIsNative()

If the Query is to be fired in JPA or native DB SQL language

setQueryIsNative

public void setQueryIsNative(boolean queryIsNative)

If the Query is to be fired in JPA or native DB SQL language

Default value:

false

getFieldMapping

public Map<String,?> getFieldMapping()

Map from query param name to field name or Transformer that will act on input to get param value. Used incase parameters are names and the input is not an Object[]

setFieldMapping

public void setFieldMapping(Map<String,?> fieldMapping)

Map from query param name to field name or Transformer that will act on input to get param value. Used incase parameters are names and the input is not an Object[]