org.apache.juddi.query
Class FindEntityByCategoryQuery

java.lang.Object
  org.apache.juddi.query.EntityQuery
      org.apache.juddi.query.FindEntityByCategoryQuery

Direct Known Subclasses:

FindEntityByCombinedCategoryQuery

public class FindEntityByCategoryQuery
extends EntityQuery

Returns the list of "entity" keys possessing the keyedReferences in the passed category bag. Output is restricted by list of "entity" keys passed in. If null, all entities are searched. Output is produced by building the appropriate JPA query based on input and find qualifiers. NOTES: 1) Categories are grouped with a logical AND by default. 2) Concerning when the categories are AND'd together - the only way this can be done with a single query was to create a self-join for each category. If there are a lot of categories, the performance could suffer. TODO: Test performance with multiple AND'd categories. If too slow, look to process this query in multiple steps. 3) The "orLikeKeys" qualifier complicates matters. The "like" keys are OR'd together and these groups of "like" keys are AND'd together. As with "andAllKeys", self-joins are created but only one for each group of "like" keys. If none of the keyedReferences passed are alike then this will reduce to an "andAllKeys" query. If all are alike, then this will query will exhibit the behavior of OR'ing all keys.

Author:

Jeff Faath

Field Summary

protected String	entityAlias
protected String	entityAliasChild
protected String	entityField
protected String	entityName
protected String	entityNameChild
protected String	keyName
protected String	selectSQL
protected String	signaturePresent

Fields inherited from class org.apache.juddi.query.EntityQuery

DEFAULT_MAXINCLAUSE, DEFAULT_MAXROWS, KEY_NAME, SIGNATURE_FIELD, TEMP_ENTITY_ALIAS, TEMP_ENTITY_NAME, TEMP_ENTITY_PK_KEY_NAME, TEMP_ENTITY_PK_TXID_NAME

Constructor Summary

FindEntityByCategoryQuery(String entityName, String entityAlias, String keyName, String entityField, String entityNameChild, String signaturePresent)

Method Summary

void	appendConditions(DynamicQuery qry, FindQualifiers fq, List<KeyedReference> keyedRefs)
void	appendJoinTables(DynamicQuery qry, FindQualifiers fq, List<KeyedReference> keyedRefs)
String	getEntityAlias()
String	getEntityAliasChild()
String	getEntityField()
String	getEntityName()
String	getEntityNameChild()
String	getKeyName()
String	getSelectSQL()
String	getSignaturePresent()
List<?>	select(javax.persistence.EntityManager em, FindQualifiers fq, CategoryBag categoryBag, List<?> keysIn, DynamicQuery.Parameter... restrictions)
void	setSignaturePresent(String signaturePresent)

Methods inherited from class org.apache.juddi.query.EntityQuery

buildAlias, getPagedResult, getQueryResult, storeIntermediateKeySetResults

Methods inherited from class java.lang.Object

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

Field Detail

entityName

protected String entityName

entityAlias

protected String entityAlias

keyName

protected String keyName

entityField

protected String entityField

entityNameChild

protected String entityNameChild

entityAliasChild

protected String entityAliasChild

selectSQL

protected String selectSQL

signaturePresent

protected String signaturePresent

Constructor Detail

FindEntityByCategoryQuery

public FindEntityByCategoryQuery(String entityName,
                                 String entityAlias,
                                 String keyName,
                                 String entityField,
                                 String entityNameChild,
                                 String signaturePresent)

Method Detail

getEntityName

public String getEntityName()

getEntityAlias

public String getEntityAlias()

getKeyName

public String getKeyName()

getEntityField

public String getEntityField()

getEntityNameChild

public String getEntityNameChild()

getEntityAliasChild

public String getEntityAliasChild()

getSelectSQL

public String getSelectSQL()

getSignaturePresent

public String getSignaturePresent()

setSignaturePresent

public void setSignaturePresent(String signaturePresent)

select

public List<?> select(javax.persistence.EntityManager em,
                      FindQualifiers fq,
                      CategoryBag categoryBag,
                      List<?> keysIn,
                      DynamicQuery.Parameter... restrictions)

appendConditions

public void appendConditions(DynamicQuery qry,
                             FindQualifiers fq,
                             List<KeyedReference> keyedRefs)

appendJoinTables

public void appendJoinTables(DynamicQuery qry,
                             FindQualifiers fq,
                             List<KeyedReference> keyedRefs)