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Relational Persistence for Java

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//$Id: ProjectionList.java 6490 2005-04-23 07:09:03Z oneovthafew $
package org.hibernate.criterion;

import java.util.ArrayList;
import java.util.List;

import org.hibernate.Criteria;
import org.hibernate.HibernateException;
import org.hibernate.type.Type;
import org.hibernate.util.ArrayHelper;

/**
 * @author Gavin King
 */
public class ProjectionList implements Projection {
	
	private List elements = new ArrayList();
	
	protected ProjectionList() {}
	
	public ProjectionList create() {
		return new ProjectionList();
	}
	
	public ProjectionList add(Projection proj) {
		elements.add(proj);
		return this;
	}

	public ProjectionList add(Projection projection, String alias) {
		return add( Projections.alias(projection, alias) );
	}

	public Type[] getTypes(Criteria criteria, CriteriaQuery criteriaQuery)
	throws HibernateException {
		List types = new ArrayList( getLength() );
		for ( int i=0; i2 ) buf.setLength( buf.length()-2 ); //pull off the last ", "
		return buf.toString();
	}
	
	public String[] getColumnAliases(int loc) {
		List result = new ArrayList( getLength() );
		for ( int i=0; i