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## org.hibernate.persister.collection
Interface QueryableCollection

All Superinterfaces:
  CollectionPersister, Joinable, PropertyMapping

All Known Subinterfaces:
  SQLLoadableCollection

All Known Implementing Classes:
  AbstractCollectionPersister, BasicCollectionPersister, OneToManyPersister

    public interface QueryableCollection

extends PropertyMapping, Joinable, CollectionPersister

A collection role that may be queried or loaded by outer join.

Author:
  Gavin King

Method Summary
`String[]` | `getElementColumnNames()` Get the names of the collection element columns (or the primary key columns in the case of a one-to-many association)
`String[]` | `getElementColumnNames(String alias)` Get the names of the collection element columns (or the primary key columns in the case of a one-to-many association), aliased by the given table alias
`EntityPersister` | `getElementPersister()` Get the persister of the element class, if this is a collection of entities (optional operation).
`FetchMode` | `getFetchMode()` Should we load this collection role by outerjoining?
`String[]` | `getIndexColumnNames()` Get the names of the collection index columns if this is an indexed collection (optional operation)
`String[]` | `getIndexColumnNames(String alias)` Get the names of the collection index columns if this is an indexed collection (optional operation), aliased by the given table alias
`String[]` | `getIndexFormulas()` Get the index formulas if this is an indexed collection (optional operation)
`String` | `getManyToManyOrderByString(String alias)` Get the order-by to be applied at the target table of a many to many
`String` | `getSQLOrderByString(String alias)` Get the order by SQL
`boolean` | `hasWhere()` Does this collection role have a where clause filter?
`String` | `selectFragment(String alias, String columnSuffix)` Generate a list of collection index and element columns

Methods inherited from interface org.hibernate.persister.entity.PropertyMapping
`getType, toColumns, toColumns, toType`

Methods inherited from interface org.hibernate.persister.entity.Joinable
`consumesCollectionAlias, consumesEntityAlias, filterFragment, fromJoinFragment, getKeyColumnNames, getName, getTableName, isCollection, oneToManyFilterFragment, selectFragment, whereJoinFragment`

Methods inherited from interface org.hibernate.persister.collection.CollectionPersister
`deleteRows, elementExists, getCache, getCacheEntryStructure, getCollectionMetadata, getCollectionSpaces, getCollectionType, getElementByIndex, getElementClass, getElementColumnAliases, getElementNodeName, getElementType, getFactory, getIdentifierColumnAlias, getIdentifierGenerator, getIdentifierType, getIndexColumnAliases, getIndexNodeName, getIndexType, getKeyColumnAliases, getKeyType, getManyToManyFilterFragment, getNodeName, getOwnerEntityPersister, getRole, getSize, hasCache, hasIndex, hasManyToManyOrdering, hasOrdering, hasOrphanDelete, indexExists, initialize, insertRows, isAffectedByEnabledFilters, isArray, isCascadeDeleteEnabled, isExtraLazy, isInverse, isLazy, isManyToMany, isMutable, isOneToMany, isPrimitiveArray, isVersioned, postInstantiate, readElement, readIdentifier, readIndex, readKey, recreate, remove, updateRows`

Method Detail

### selectFragment

    String selectFragment(String alias,
                          String columnSuffix)

  Generate a list of collection index and element columns

### getIndexColumnNames

    String[] getIndexColumnNames()

  Get the names of the collection index columns if this is an indexed collection (optional operation)

### getIndexFormulas

    String[] getIndexFormulas()

  Get the index formulas if this is an indexed collection (optional operation)

### getIndexColumnNames

    String[] getIndexColumnNames(String alias)

  Get the names of the collection index columns if this is an indexed collection (optional operation), aliased by the given table alias

### getElementColumnNames

    String[] getElementColumnNames(String alias)

  Get the names of the collection element columns (or the primary key columns in the case of a one-to-many association), aliased by the given table alias

### getElementColumnNames

    String[] getElementColumnNames()

  Get the names of the collection element columns (or the primary key columns in the case of a one-to-many association)

### getSQLOrderByString

    String getSQLOrderByString(String alias)

  Get the order by SQL

### getManyToManyOrderByString

    String getManyToManyOrderByString(String alias)

  Get the order-by to be applied at the target table of a many to many

  Parameters:
    `alias` - The alias for the many-to-many target table
  Returns:
    appropriate order-by fragment or empty string.

### hasWhere

    boolean hasWhere()

  Does this collection role have a where clause filter?

### getElementPersister

    EntityPersister getElementPersister()

  Get the persister of the element class, if this is a collection of entities (optional operation). Note that for a one-to-many association, the returned persister must be `OuterJoinLoadable`.

### getFetchMode

    FetchMode getFetchMode()

  Should we load this collection role by outerjoining?

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