OneToManyJoinWalkerpublic class OneToManyJoinWalker extends CollectionJoinWalker | Walker for one-to-many associations |
| Fields Summary |
|---|
| private final org.hibernate.persister.collection.QueryableCollection | oneToManyPersister |
| Constructors Summary |
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public OneToManyJoinWalker(org.hibernate.persister.collection.QueryableCollection oneToManyPersister, int batchSize, String subquery, org.hibernate.engine.SessionFactoryImplementor factory, Map enabledFilters)
super(factory, enabledFilters);
this.oneToManyPersister = oneToManyPersister;
final OuterJoinLoadable elementPersister = (OuterJoinLoadable) oneToManyPersister.getElementPersister();
final String alias = generateRootAlias( oneToManyPersister.getRole() );
walkEntityTree(elementPersister, alias);
List allAssociations = new ArrayList();
allAssociations.addAll(associations);
allAssociations.add( new OuterJoinableAssociation(
oneToManyPersister.getCollectionType(),
null,
null,
alias,
JoinFragment.LEFT_OUTER_JOIN,
getFactory(),
CollectionHelper.EMPTY_MAP
) );
initPersisters(allAssociations, LockMode.NONE);
initStatementString(elementPersister, alias, batchSize, subquery);
|
| Methods Summary |
|---|
| private void | initStatementString(org.hibernate.persister.entity.OuterJoinLoadable elementPersister, java.lang.String alias, int batchSize, java.lang.String subquery)
final int joins = countEntityPersisters( associations );
suffixes = BasicLoader.generateSuffixes( joins + 1 );
final int collectionJoins = countCollectionPersisters( associations ) + 1;
collectionSuffixes = BasicLoader.generateSuffixes( joins + 1, collectionJoins );
StringBuffer whereString = whereString(
alias,
oneToManyPersister.getKeyColumnNames(),
subquery,
batchSize
);
String filter = oneToManyPersister.filterFragment( alias, getEnabledFilters() );
whereString.insert( 0, StringHelper.moveAndToBeginning(filter) );
JoinFragment ojf = mergeOuterJoins(associations);
Select select = new Select( getDialect() )
.setSelectClause(
oneToManyPersister.selectFragment(null, null, alias, suffixes[joins], collectionSuffixes[0], true) +
selectString(associations)
)
.setFromClause(
elementPersister.fromTableFragment(alias) +
elementPersister.fromJoinFragment(alias, true, true)
)
.setWhereClause( whereString.toString() )
.setOuterJoins(
ojf.toFromFragmentString(),
ojf.toWhereFragmentString() +
elementPersister.whereJoinFragment(alias, true, true)
);
select.setOrderByClause( orderBy( associations, oneToManyPersister.getSQLOrderByString(alias) ) );
if ( getFactory().getSettings().isCommentsEnabled() ) {
select.setComment( "load one-to-many " + oneToManyPersister.getRole() );
}
sql = select.toStatementString();
| | protected boolean | isDuplicateAssociation(java.lang.String foreignKeyTable, java.lang.String[] foreignKeyColumns)
//disable a join back to this same association
final boolean isSameJoin = oneToManyPersister.getTableName().equals(foreignKeyTable) &&
Arrays.equals( foreignKeyColumns, oneToManyPersister.getKeyColumnNames() );
return isSameJoin ||
super.isDuplicateAssociation(foreignKeyTable, foreignKeyColumns);
| | public java.lang.String | toString()
return getClass().getName() + '(" + oneToManyPersister.getRole() + ')";
|
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