org.hibernate.sql.QueryJoinFragment Java Examples

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Example #1

Source File: JoinSequence.java From cacheonix-core with GNU Lesser General Public License v2.1

4 votes

public JoinFragment toJoinFragment(
		Map enabledFilters,
        boolean includeExtraJoins,
        String withClauseFragment,
        String withClauseJoinAlias) throws MappingException {
	QueryJoinFragment joinFragment = new QueryJoinFragment( factory.getDialect(), useThetaStyle );
	if ( rootJoinable != null ) {
		joinFragment.addCrossJoin( rootJoinable.getTableName(), rootAlias );
		String filterCondition = rootJoinable.filterFragment( rootAlias, enabledFilters );
		// JoinProcessor needs to know if the where clause fragment came from a dynamic filter or not so it
		// can put the where clause fragment in the right place in the SQL AST.   'hasFilterCondition' keeps track
		// of that fact.
		joinFragment.setHasFilterCondition( joinFragment.addCondition( filterCondition ) );
		if (includeExtraJoins) { //TODO: not quite sure about the full implications of this!
			addExtraJoins( joinFragment, rootAlias, rootJoinable, true );
		}
	}

	Joinable last = rootJoinable;

	for ( int i = 0; i < joins.size(); i++ ) {
		Join join = ( Join ) joins.get( i );
		String on = join.getAssociationType().getOnCondition( join.getAlias(), factory, enabledFilters );
		String condition = null;
		if ( last != null &&
		        isManyToManyRoot( last ) &&
		        ( ( QueryableCollection ) last ).getElementType() == join.getAssociationType() ) {
			// the current join represents the join between a many-to-many association table
			// and its "target" table.  Here we need to apply any additional filters
			// defined specifically on the many-to-many
			String manyToManyFilter = ( ( QueryableCollection ) last )
			        .getManyToManyFilterFragment( join.getAlias(), enabledFilters );
			condition = "".equals( manyToManyFilter )
					? on
					: "".equals( on )
							? manyToManyFilter
							: on + " and " + manyToManyFilter;
		}
		else {
			condition = on;
		}
		if ( withClauseFragment != null ) {
			if ( join.getAlias().equals( withClauseJoinAlias ) ) {
				condition += " and " + withClauseFragment;
			}
		}
		joinFragment.addJoin(
		        join.getJoinable().getTableName(),
				join.getAlias(),
				join.getLHSColumns(),
				JoinHelper.getRHSColumnNames( join.getAssociationType(), factory ),
				join.joinType,
				condition
		);
		if (includeExtraJoins) { //TODO: not quite sure about the full implications of this!
			addExtraJoins( joinFragment, join.getAlias(), join.getJoinable(), join.joinType == JoinFragment.INNER_JOIN );
		}
		last = join.getJoinable();
	}
	if ( next != null ) {
		joinFragment.addFragment( next.toJoinFragment( enabledFilters, includeExtraJoins ) );
	}
	joinFragment.addCondition( conditions.toString() );
	if ( isFromPart ) joinFragment.clearWherePart();
	return joinFragment;
}