TestDependentCriteriaProcessor.java

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 * This library is free software; you can redistribute it and/or
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 * Lesser General Public License for more details.
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package org.teiid.query.processor.relational;

import static org.junit.Assert.*;

import java.util.Arrays;
import java.util.List;

import org.junit.Test;
import org.teiid.query.sql.lang.CompareCriteria;
import org.teiid.query.sql.lang.Criteria;
import org.teiid.query.sql.lang.SetCriteria;
import org.teiid.query.sql.symbol.Constant;
import org.teiid.query.sql.symbol.ElementSymbol;
import org.teiid.query.sql.symbol.Reference;
import org.teiid.query.util.CommandContext;


public class TestDependentCriteriaProcessor {

	@Test public void testNegatedSetCriteria() throws Exception {
		DependentAccessNode dan = new DependentAccessNode(0);
		SetCriteria sc = new SetCriteria(new ElementSymbol("e1"), Arrays.asList(new Constant(1), new Constant(2))); //$NON-NLS-1$
		sc.setAllConstants(true);
		sc.negate();
		DependentCriteriaProcessor dcp = new DependentCriteriaProcessor(1, -1, dan, sc);
		Criteria result = dcp.prepareCriteria();
		assertEquals(sc, result);  
		assertFalse(dcp.hasNextCommand());
	}
	
	@Test public void testSetCriteria() throws Exception {
		DependentAccessNode dan = new DependentAccessNode(0);
		SetCriteria sc = new SetCriteria(new ElementSymbol("e1"), Arrays.asList(new Constant(1), new Constant(2))); //$NON-NLS-1$
		sc.setAllConstants(true);
		DependentCriteriaProcessor dcp = new DependentCriteriaProcessor(1, -1, dan, sc);
		Criteria result = dcp.prepareCriteria();
		assertEquals(new CompareCriteria(new ElementSymbol("e1"), CompareCriteria.EQ, new Constant(1)), result); //$NON-NLS-1$ 
		assertTrue(dcp.hasNextCommand());
	}
	
	@Test public void testEvaluatedSetCriteria() throws Exception {
		DependentAccessNode dan = new DependentAccessNode(0);
		CommandContext cc = new CommandContext();
		dan.setContext(cc);
		List<Reference> references = Arrays.asList(new Reference(1), new Reference(2));
		for (Reference reference : references) {
			cc.getVariableContext().setGlobalValue(reference.getContextSymbol(), 1);
		}
		SetCriteria sc = new SetCriteria(new ElementSymbol("e1"), references); //$NON-NLS-1$
		sc.setAllConstants(true);
		DependentCriteriaProcessor dcp = new DependentCriteriaProcessor(1, -1, dan, sc);
		Criteria result = dcp.prepareCriteria();
		assertEquals(new CompareCriteria(new ElementSymbol("e1"), CompareCriteria.EQ, new Constant(1)), result); //$NON-NLS-1$ 
		assertFalse(dcp.hasNextCommand());
	}
	
}