CriteriaJoinWalkerpublic class CriteriaJoinWalker extends org.hibernate.loader.AbstractEntityJoinWalker | A JoinWalker for Criteria queries. |
| Fields Summary |
|---|
| private final CriteriaQueryTranslator | translator | | private final Set | querySpaces | | private final org.hibernate.type.Type[] | resultTypes | | private final String[] | userAliases | | private final List | userAliasList |
| Constructors Summary |
|---|
public CriteriaJoinWalker(org.hibernate.persister.entity.OuterJoinLoadable persister, CriteriaQueryTranslator translator, org.hibernate.engine.SessionFactoryImplementor factory, org.hibernate.impl.CriteriaImpl criteria, String rootEntityName, Map enabledFilters)
super(persister, factory, enabledFilters);
this.translator = translator;
querySpaces = translator.getQuerySpaces();
if ( translator.hasProjection() ) {
resultTypes = translator.getProjectedTypes();
initProjection(
translator.getSelect(),
translator.getWhereCondition(),
translator.getOrderBy(),
translator.getGroupBy(),
LockMode.NONE
);
}
else {
resultTypes = new Type[] { TypeFactory.manyToOne( persister.getEntityName() ) };
initAll( translator.getWhereCondition(), translator.getOrderBy(), LockMode.NONE );
}
userAliasList.add( criteria.getAlias() ); //root entity comes *last*
userAliases = ArrayHelper.toStringArray(userAliasList);
|
| Methods Summary |
|---|
| protected java.lang.String | generateRootAlias(java.lang.String tableName)
return CriteriaQueryTranslator.ROOT_SQL_ALIAS;
| | protected java.lang.String | generateTableAlias(int n, java.lang.String path, org.hibernate.persister.entity.Joinable joinable)
if ( joinable.consumesEntityAlias() ) {
final Criteria subcriteria = translator.getCriteria(path);
String sqlAlias = subcriteria==null ? null : translator.getSQLAlias(subcriteria);
if (sqlAlias!=null) {
userAliasList.add( subcriteria.getAlias() ); //alias may be null
return sqlAlias; //EARLY EXIT
}
else {
userAliasList.add(null);
}
}
return super.generateTableAlias( n + translator.getSQLAliasCount(), path, joinable );
| | public java.lang.String | getComment()
return "criteria query";
| | protected int | getJoinType(org.hibernate.type.AssociationType type, org.hibernate.FetchMode config, java.lang.String path, java.lang.String lhsTable, java.lang.String[] lhsColumns, boolean nullable, int currentDepth, org.hibernate.engine.CascadeStyle cascadeStyle)
if ( translator.isJoin(path) ) {
return translator.getJoinType( path );
}
else {
if ( translator.hasProjection() ) {
return -1;
}
else {
FetchMode fetchMode = translator.getRootCriteria()
.getFetchMode(path);
if ( isDefaultFetchMode(fetchMode) ) {
return super.getJoinType(
type,
config,
path,
lhsTable,
lhsColumns,
nullable,
currentDepth, cascadeStyle
);
}
else {
if ( fetchMode==FetchMode.JOIN ) {
isDuplicateAssociation(lhsTable, lhsColumns, type); //deliberately ignore return value!
return getJoinType(nullable, currentDepth);
}
else {
return -1;
}
}
}
}
| | public java.util.Set | getQuerySpaces()
return querySpaces;
| | public org.hibernate.type.Type[] | getResultTypes()
return resultTypes;
| | public java.lang.String[] | getUserAliases()
return userAliases;
| | protected java.lang.String | getWhereFragment()Use the discriminator, to narrow the select to instances
of the queried subclass, also applying any filters.
return super.getWhereFragment() +
( (Queryable) getPersister() ).filterFragment( getAlias(), getEnabledFilters() );
| | private static boolean | isDefaultFetchMode(org.hibernate.FetchMode fetchMode)
return fetchMode==null || fetchMode==FetchMode.DEFAULT;
|
|
