org.hibernate.sql.ANSIJoinFragment Maven / Gradle / Ivy

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//$Id: ANSIJoinFragment.java 4886 2004-12-05 15:04:21Z pgmjsd $
package org.hibernate.sql;

import org.hibernate.AssertionFailure;

/**
 * An ANSI-style join
 *
 * @author Gavin King
 */
public class ANSIJoinFragment extends JoinFragment {

	private StringBuffer buffer = new StringBuffer();
	private StringBuffer conditions = new StringBuffer();

	public void addJoin(String tableName, String alias, String[] fkColumns, String[] pkColumns, int joinType) {
		addJoin(tableName, alias, fkColumns, pkColumns, joinType, null);
	}

	public void addJoin(String tableName, String alias, String[] fkColumns, String[] pkColumns, int joinType, String on) {
		String joinString;
		switch (joinType) {
			case INNER_JOIN:
				joinString = " inner join ";
				break;
			case LEFT_OUTER_JOIN:
				joinString = " left outer join ";
				break;
			case RIGHT_OUTER_JOIN:
				joinString = " right outer join ";
				break;
			case FULL_JOIN:
				joinString = " full outer join ";
				break;
			default:
				throw new AssertionFailure("undefined join type");
		}

		buffer.append(joinString)
			.append(tableName)
			.append(' ')
			.append(alias)
			.append(" on ");


		for ( int j=0; j