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Viewing changes to src/org/hibernate/mapping/IdentifierCollection.java

  • Committer: Bazaar Package Importer
  • Author(s): Torsten Werner
  • Date: 2007-10-14 14:43:34 UTC
  • Revision ID: james.westby@ubuntu.com-20071014144334-eamc8i0q10gs1aro
Tags: upstream-3.2.5
Import upstream version 3.2.5

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src/org/hibernate/mapping/IdentifierCollection.java
 
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//$Id: IdentifierCollection.java 4173 2004-08-08 04:56:01Z oneovthafew $
 
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package org.hibernate.mapping;
 
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import org.hibernate.MappingException;
 
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import org.hibernate.engine.Mapping;
 
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/**
 
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 * A collection with a synthetic "identifier" column
 
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 */
 
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public abstract class IdentifierCollection extends Collection {
 
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        public static final String DEFAULT_IDENTIFIER_COLUMN_NAME = "id";
 
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        private KeyValue identifier;
 
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        public IdentifierCollection(PersistentClass owner) {
 
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                super(owner);
 
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        }
 
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        public KeyValue getIdentifier() {
 
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                return identifier;
 
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        }
 
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        public void setIdentifier(KeyValue identifier) {
 
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                this.identifier = identifier;
 
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        }
 
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        public final boolean isIdentified() {
 
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                return true;
 
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        }
 
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        void createPrimaryKey() {
 
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                if ( !isOneToMany() ) {
 
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                        PrimaryKey pk = new PrimaryKey();
 
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                        pk.addColumns( getIdentifier().getColumnIterator() );
 
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                        getCollectionTable().setPrimaryKey(pk);
 
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                }
 
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                else {
 
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                        // don't create a unique key, 'cos some
 
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                        // databases don't like a UK on nullable
 
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                        // columns
 
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                        //getCollectionTable().createUniqueKey( getIdentifier().getConstraintColumns() );
 
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                }
 
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                // create an index on the key columns??
 
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        }
 
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        public void validate(Mapping mapping) throws MappingException {
 
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                super.validate(mapping);
 
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                if ( !getIdentifier().isValid(mapping) ) {
 
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                        throw new MappingException(
 
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                                "collection id mapping has wrong number of columns: " +
 
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                                getRole() +
 
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                                " type: " +
 
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                                getIdentifier().getType().getName()
 
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                        );
 
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                }
 
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        }
 
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}
 
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