org.apache.cayenne.access.trans

Class LOBBatchQueryWrapper

java.lang.Object

org.apache.cayenne.access.trans.LOBBatchQueryWrapper

public class LOBBatchQueryWrapper
extends Object

Helper class to extract the information from BatchQueries, essential for LOB columns processing.

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean[]	allLOBAttributes
protected List<DbAttribute>	dbAttributes
protected boolean	hasNext
protected boolean[]	qualifierAttributes
protected BatchQuery	query
protected Object[]	updatedLOBAttributes

Constructor Summary

Constructors

Constructor and Description
LOBBatchQueryWrapper(BatchQuery query)

Method Summary

Methods

Modifier and Type	Method and Description
protected byte[]	convertToBlobValue(Object value) Converts value to byte[] if possible.
protected Object	convertToClobValue(Object value) Converts to char[] or String.
List<DbAttribute>	getDbAttributesForLOBSelectQualifier() Returns a list of DbAttributes used in the qualifier of the query that selects a LOB row for LOB update.
List<DbAttribute>	getDbAttributesForUpdatedLOBColumns() Returns a list of DbAttributes that correspond to the LOB columns updated in the current row in the batch query.
BatchQuery	getQuery() Returns wrapped BatchQuery.
List	getValuesForLOBSelectQualifier()
List	getValuesForUpdatedLOBColumns()
protected void	indexLOBAttributes() Indexes attributes
protected void	indexQualifierAttributes() Indexes attributes
boolean	next()

Methods inherited from class java.lang.Object

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

Field Detail

query

protected BatchQuery query

dbAttributes

protected List<DbAttribute> dbAttributes

qualifierAttributes

protected boolean[] qualifierAttributes

allLOBAttributes

protected boolean[] allLOBAttributes

updatedLOBAttributes

protected Object[] updatedLOBAttributes

hasNext

protected boolean hasNext

Constructor Detail

LOBBatchQueryWrapper

public LOBBatchQueryWrapper(BatchQuery query)

Method Detail

next

public boolean next()

indexQualifierAttributes

protected void indexQualifierAttributes()

Indexes attributes

indexLOBAttributes

protected void indexLOBAttributes()

Indexes attributes

convertToBlobValue

protected byte[] convertToBlobValue(Object value)

Converts value to byte[] if possible.

convertToClobValue

protected Object convertToClobValue(Object value)

Converts to char[] or String. Both are acceptable when writing CLOBs.

getDbAttributesForLOBSelectQualifier

public List<DbAttribute> getDbAttributesForLOBSelectQualifier()

Returns a list of DbAttributes used in the qualifier of the query that selects a LOB row for LOB update.

getDbAttributesForUpdatedLOBColumns

public List<DbAttribute> getDbAttributesForUpdatedLOBColumns()

Returns a list of DbAttributes that correspond to the LOB columns updated in the current row in the batch query. The list will not include LOB attributes that are null or empty.

getValuesForLOBSelectQualifier

public List getValuesForLOBSelectQualifier()

getValuesForUpdatedLOBColumns

public List getValuesForUpdatedLOBColumns()

getQuery

public BatchQuery getQuery()

Returns wrapped BatchQuery.