ejb3joincolumn.java

hibernate3.2.6源码和jar包

							+ holder.getEntityName()
							+ "."
							+ property.getPropertyName()
			);
		}
	}

	public void linkValueUsingDefaultColumnNaming(
			Column referencedColumn, PersistentClass referencedEntity, SimpleValue value
	) {
		String columnName;
		String logicalReferencedColumn = getMappings().getLogicalColumnName(
				referencedColumn.getName(), referencedEntity.getTable()
		);
		boolean mappedBySide = mappedByTableName != null || mappedByPropertyName != null;
		boolean ownerSide = getPropertyName() != null;

		Boolean isRefColumnQuoted = StringHelper.isQuoted( logicalReferencedColumn );
		String unquotedLogicalReferenceColumn = isRefColumnQuoted ?
				StringHelper.unquote( logicalReferencedColumn ) :
				logicalReferencedColumn;

		if ( mappedBySide ) {
			String unquotedMappedbyTable = StringHelper.unquote( mappedByTableName );
			columnName = getMappings().getNamingStrategy().foreignKeyColumnName(
					mappedByPropertyName,
					mappedByEntityName,
					unquotedMappedbyTable,
					unquotedLogicalReferenceColumn
			);
			//one element was quoted so we quote
			if ( isRefColumnQuoted || StringHelper.isQuoted( mappedByTableName ) ) {
				columnName = StringHelper.quote( columnName );
			}
		}
		else if ( ownerSide ) {
			String logicalTableName = getMappings().getLogicalTableName( referencedEntity.getTable() );
			String unquotedLogicalTableName = StringHelper.unquote( logicalTableName );
			columnName = getMappings().getNamingStrategy().foreignKeyColumnName(
					getPropertyName(),
					referencedEntity.getEntityName(),
					unquotedLogicalTableName,
					unquotedLogicalReferenceColumn
			);
			//one element was quoted so we quote
			if ( isRefColumnQuoted || StringHelper.isQuoted( logicalTableName ) ) {
				columnName = StringHelper.quote( columnName );
			}
		}
		else {
			//is an intra-entity hierarchy table join so copy the name by default
			String logicalTableName = getMappings().getLogicalTableName( referencedEntity.getTable() );
			String unquotedLogicalTableName = StringHelper.unquote( logicalTableName );
			columnName = getMappings().getNamingStrategy().joinKeyColumnName(
					unquotedLogicalReferenceColumn,
					unquotedLogicalTableName
			);
			//one element was quoted so we quote
			if ( isRefColumnQuoted || StringHelper.isQuoted( logicalTableName ) ) {
				columnName = StringHelper.quote( columnName );
			}
		}
		//yuk side effect on an implicit column
		setLogicalColumnName( columnName );
		setReferencedColumn( logicalReferencedColumn );
		initMappingColumn(
				columnName,
				null, referencedColumn.getLength(),
				referencedColumn.getPrecision(),
				referencedColumn.getScale(),
				getMappingColumn().isNullable(),
				referencedColumn.getSqlType(),
				getMappingColumn().isUnique(), false
		);
		linkWithValue( value );
	}

	/**
	 * used for mappedBy cases
	 */
	public void linkValueUsingAColumnCopy(Column column, SimpleValue value) {
		initMappingColumn(
				//column.getName(),
				column.getQuotedName(),
				null, column.getLength(),
				column.getPrecision(),
				column.getScale(),
				getMappingColumn().isNullable(),
				column.getSqlType(),
				getMappingColumn().isUnique(),
				false //We do copy no strategy here
		);
		linkWithValue( value );
	}

	protected void addColumnBinding(SimpleValue value) {
		if ( StringHelper.isEmpty( mappedBy ) ) {
			String unquotedLogColName = StringHelper.unquote( getLogicalColumnName() );
			String unquotedRefColumn = StringHelper.unquote( getReferencedColumn() );
			String logicalColumnName = getMappings().getNamingStrategy()
					.logicalCollectionColumnName( unquotedLogColName, getPropertyName(), unquotedRefColumn );
			if ( StringHelper.isQuoted( getLogicalColumnName() ) || StringHelper.isQuoted( getLogicalColumnName() ) ) {
				logicalColumnName = StringHelper.quote( logicalColumnName );
			}
			getMappings().addColumnBinding( logicalColumnName, getMappingColumn(), value.getTable() );
		}
	}

	//keep it JDK 1.4 compliant
	//implicit way
	public static final int NO_REFERENCE = 0;
	//reference to the pk in an explicit order
	public static final int PK_REFERENCE = 1;
	//reference to non pk columns
	public static final int NON_PK_REFERENCE = 2;

	public static int checkReferencedColumnsType(
			Ejb3JoinColumn[] columns, PersistentClass referencedEntity,
			ExtendedMappings mappings
	) {
		//convenient container to find whether a column is an id one or not
		Set<Column> idColumns = new HashSet<Column>();
		Iterator idColumnsIt = referencedEntity.getKey().getColumnIterator();
		while ( idColumnsIt.hasNext() ) {
			idColumns.add( (Column) idColumnsIt.next() );
		}

		boolean isFkReferencedColumnName = false;
		boolean noReferencedColumn = true;
		//build the list of potential tables
		if ( columns.length == 0 ) return NO_REFERENCE; //shortcut
		Object columnOwner = BinderHelper.findColumnOwner(
				referencedEntity, columns[0].getReferencedColumn(), mappings
		);
		if ( columnOwner == null ) {
			try {
				throw new MappingException(
						"Unable to find column with logical name: "
								+ columns[0].getReferencedColumn() + " in " + referencedEntity.getTable() + " and its related "
								+ "supertables and secondary tables"
				);
			}
			catch (MappingException e) {
				throw new RecoverableException(e);
			}
		}
		Table matchingTable = columnOwner instanceof PersistentClass ?
				( (PersistentClass) columnOwner ).getTable() :
				( (Join) columnOwner ).getTable();
		//check each referenced column
		for (Ejb3JoinColumn ejb3Column : columns) {
			String logicalReferencedColumnName = ejb3Column.getReferencedColumn();
			if ( StringHelper.isNotEmpty( logicalReferencedColumnName ) ) {
				String referencedColumnName = null;
				try {
					referencedColumnName = mappings.getPhysicalColumnName( logicalReferencedColumnName, matchingTable );
				}
				catch (MappingException me) {
					//rewrite the exception
					throw new MappingException(
							"Unable to find column with logical name: "
									+ logicalReferencedColumnName + " in " + matchingTable.getName()
					);
				}
				noReferencedColumn = false;
				Column refCol = new Column( referencedColumnName );
				boolean contains = idColumns.contains( refCol );
				if ( !contains ) {
					isFkReferencedColumnName = true;
					break; //we know the state
				}
			}
		}
		if ( isFkReferencedColumnName ) {
			return NON_PK_REFERENCE;
		}
		else if ( noReferencedColumn ) {
			return NO_REFERENCE;
		}
		else if ( idColumns.size() != columns.length ) {
			//reference use PK but is a subset or a superset
			return NON_PK_REFERENCE;
		}
		else {
			return PK_REFERENCE;
		}
	}

	public void overrideSqlTypeIfNecessary(org.hibernate.mapping.Column column) {
		if ( StringHelper.isEmpty( sqlType ) ) {
			sqlType = column.getSqlType();
			if ( getMappingColumn() != null ) getMappingColumn().setSqlType( sqlType );
		}
	}

	@Override
	public void redefineColumnName(String columnName, String propertyName, boolean applyNamingStrategy) {
		if ( StringHelper.isNotEmpty( columnName ) ) {
			getMappingColumn().setName(
					applyNamingStrategy ?
							getMappings().getNamingStrategy().columnName( columnName ) :
							columnName
			);
		}
	}

	public static Ejb3JoinColumn[] buildJoinTableJoinColumns(
			JoinColumn[] annJoins, Map<String, Join> secondaryTables,
			PropertyHolder propertyHolder, String propertyName, String mappedBy, ExtendedMappings mappings
	) {
		Ejb3JoinColumn[] joinColumns;
		if ( annJoins == null ) {
			Ejb3JoinColumn currentJoinColumn = new Ejb3JoinColumn();
			currentJoinColumn.setImplicit( true );
			currentJoinColumn.setNullable( false ); //I break the spec, but it's for good
			currentJoinColumn.setPropertyHolder( propertyHolder );
			currentJoinColumn.setJoins( secondaryTables );
			currentJoinColumn.setMappings( mappings );
			currentJoinColumn.setPropertyName(
					BinderHelper.getRelativePath( propertyHolder, propertyName )
			);
			currentJoinColumn.setMappedBy( mappedBy );
			currentJoinColumn.bind();

			joinColumns = new Ejb3JoinColumn[] {
					currentJoinColumn

			};
		}
		else {
			joinColumns = new Ejb3JoinColumn[annJoins.length];
			JoinColumn annJoin;
			int length = annJoins.length;
			for (int index = 0; index < length; index++) {
				annJoin = annJoins[index];
				Ejb3JoinColumn currentJoinColumn = new Ejb3JoinColumn();
				currentJoinColumn.setImplicit( true );
				currentJoinColumn.setPropertyHolder( propertyHolder );
				currentJoinColumn.setJoins( secondaryTables );
				currentJoinColumn.setMappings( mappings );
				currentJoinColumn.setPropertyName( BinderHelper.getRelativePath( propertyHolder, propertyName ) );
				currentJoinColumn.setMappedBy( mappedBy );
				currentJoinColumn.setJoinAnnotation( annJoin, propertyName );
				currentJoinColumn.setNullable( false ); //I break the spec, but it's for good
				//done after the annotation to override it
				currentJoinColumn.bind();
				joinColumns[index] = currentJoinColumn;
			}
		}
		return joinColumns;
	}

	public void setMappedBy(String entityName, String logicalTableName, String mappedByProperty) {
		this.mappedByEntityName = entityName;
		this.mappedByTableName = logicalTableName;
		this.mappedByPropertyName = mappedByProperty;
	}
}