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package org.hibernate.criterion;

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

import org.hibernate.Criteria;
import org.hibernate.HibernateException;
import org.hibernate.engine.TypedValue;
import org.hibernate.util.StringHelper;

/**
 * A sequence of a logical expressions combined by some
 * associative logical operator
 *
 * @author Gavin King
 */
public class Junction implements Criterion {

	private final List criteria = new ArrayList();
	private final String op;
	
	protected Junction(String op) {
		this.op = op;
	}
	
	public Junction add(Criterion criterion) {
		criteria.add(criterion);
		return this;
	}

	public String getOp() {
		return op;
	}

	public TypedValue[] getTypedValues(Criteria crit, CriteriaQuery criteriaQuery)
	throws HibernateException {
		ArrayList typedValues = new ArrayList();
		Iterator iter = criteria.iterator();
		while ( iter.hasNext() ) {
			TypedValue[] subvalues = ( (Criterion) iter.next() ).getTypedValues(crit, criteriaQuery);
			for ( int i=0; i