/*
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 * See the COPYRIGHT.txt file distributed with this work for information
 * regarding copyright ownership.  Some portions may be licensed
 * to Red Hat, Inc. under one or more contributor license agreements.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
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 */

package org.teiid.dqp.internal.datamgr;

import static org.junit.Assert.*;

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

import org.junit.Test;
import org.teiid.language.AndOr;
import org.teiid.language.AndOr.Operator;
import org.teiid.language.Expression;
import org.teiid.language.In;
import org.teiid.language.Literal;
import org.teiid.query.sql.lang.SetCriteria;
import org.teiid.query.unittest.RealMetadataFactory;

public class TestInCriteriaImpl {

    public static SetCriteria helpExample(boolean negated) {
        ArrayList<org.teiid.query.sql.symbol.Expression> values = new ArrayList<org.teiid.query.sql.symbol.Expression>();
        values.add(TestLiteralImpl.helpExample(100));
        values.add(TestLiteralImpl.helpExample(200));
        values.add(TestLiteralImpl.helpExample(300));
        values.add(TestLiteralImpl.helpExample(400));
        SetCriteria crit = new SetCriteria(TestLiteralImpl.helpExample(300), values);
        crit.setNegated(negated);
        return crit;
    }
    
    public static In example(boolean negated) throws Exception {
        return (In)TstLanguageBridgeFactory.factory.translate(helpExample(negated));
    }

    @Test public void testGetLeftExpression() throws Exception {
        In inCriteria = example(false);
        assertNotNull(inCriteria.getLeftExpression());
        assertTrue(inCriteria.getLeftExpression() instanceof Literal);
        assertEquals(new Integer(300), ((Literal)inCriteria.getLeftExpression()).getValue());
    }
    
    @Test public void testExpansion() throws Exception {
    	SetCriteria inCriteria = helpExample(false);
        LanguageBridgeFactory lbf = new LanguageBridgeFactory(RealMetadataFactory.example1Cached());
        lbf.setConvertIn(true);
        AndOr or = (AndOr) lbf.translate(inCriteria);
        assertEquals(Operator.OR, or.getOperator());
        inCriteria.setNegated(true);
        AndOr and = (AndOr) lbf.translate(inCriteria);
        assertEquals(Operator.AND, and.getOperator());
    }
    
    @Test public void testExpansion1() throws Exception {
    	SetCriteria inCriteria = helpExample(false);
        LanguageBridgeFactory lbf = new LanguageBridgeFactory(RealMetadataFactory.example1Cached());
        lbf.setMaxInPredicateSize(2);
        AndOr or = (AndOr) lbf.translate(inCriteria);
        assertEquals(Operator.OR, or.getOperator());
        assertEquals(2, ((In)or.getRightCondition()).getRightExpressions().size());
        inCriteria.setNegated(true);
        AndOr and = (AndOr) lbf.translate(inCriteria);
        assertEquals(Operator.AND, and.getOperator());
        assertEquals("300 NOT IN (100, 200) AND 300 NOT IN (300, 400)", and.toString());
    }

    @Test public void testGetRightExpressions() throws Exception {
        List<Expression> values = example(false).getRightExpressions();
        assertNotNull(values);
        assertEquals(4, values.size());
    }

    @Test public void testIsNegated() throws Exception {
        assertTrue(example(true).isNegated());
        assertFalse(example(false).isNegated());
    }

}
