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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.indexinglanguage;
import com.yahoo.collections.Pair;
import com.yahoo.document.datatypes.IntegerFieldValue;
import com.yahoo.language.simple.SimpleLinguistics;
import com.yahoo.vespa.indexinglanguage.expressions.ArithmeticExpression;
import com.yahoo.vespa.indexinglanguage.expressions.AttributeExpression;
import com.yahoo.vespa.indexinglanguage.expressions.Base64DecodeExpression;
import com.yahoo.vespa.indexinglanguage.expressions.Base64EncodeExpression;
import com.yahoo.vespa.indexinglanguage.expressions.CatExpression;
import com.yahoo.vespa.indexinglanguage.expressions.ClearStateExpression;
import com.yahoo.vespa.indexinglanguage.expressions.EchoExpression;
import com.yahoo.vespa.indexinglanguage.expressions.Expression;
import com.yahoo.vespa.indexinglanguage.expressions.ForEachExpression;
import com.yahoo.vespa.indexinglanguage.expressions.GetFieldExpression;
import com.yahoo.vespa.indexinglanguage.expressions.GetVarExpression;
import com.yahoo.vespa.indexinglanguage.expressions.GuardExpression;
import com.yahoo.vespa.indexinglanguage.expressions.HexDecodeExpression;
import com.yahoo.vespa.indexinglanguage.expressions.HexEncodeExpression;
import com.yahoo.vespa.indexinglanguage.expressions.HostNameExpression;
import com.yahoo.vespa.indexinglanguage.expressions.IfThenExpression;
import com.yahoo.vespa.indexinglanguage.expressions.IndexExpression;
import com.yahoo.vespa.indexinglanguage.expressions.InputExpression;
import com.yahoo.vespa.indexinglanguage.expressions.JoinExpression;
import com.yahoo.vespa.indexinglanguage.expressions.LowerCaseExpression;
import com.yahoo.vespa.indexinglanguage.expressions.NormalizeExpression;
import com.yahoo.vespa.indexinglanguage.expressions.NowExpression;
import com.yahoo.vespa.indexinglanguage.expressions.OptimizePredicateExpression;
import com.yahoo.vespa.indexinglanguage.expressions.ParenthesisExpression;
import com.yahoo.vespa.indexinglanguage.expressions.RandomExpression;
import com.yahoo.vespa.indexinglanguage.expressions.ScriptExpression;
import com.yahoo.vespa.indexinglanguage.expressions.SelectInputExpression;
import com.yahoo.vespa.indexinglanguage.expressions.SetLanguageExpression;
import com.yahoo.vespa.indexinglanguage.expressions.SetValueExpression;
import com.yahoo.vespa.indexinglanguage.expressions.SetVarExpression;
import com.yahoo.vespa.indexinglanguage.expressions.SplitExpression;
import com.yahoo.vespa.indexinglanguage.expressions.StatementExpression;
import com.yahoo.vespa.indexinglanguage.expressions.SubstringExpression;
import com.yahoo.vespa.indexinglanguage.expressions.SummaryExpression;
import com.yahoo.vespa.indexinglanguage.expressions.SwitchExpression;
import com.yahoo.vespa.indexinglanguage.expressions.ThisExpression;
import com.yahoo.vespa.indexinglanguage.expressions.ToArrayExpression;
import com.yahoo.vespa.indexinglanguage.expressions.ToByteExpression;
import com.yahoo.vespa.indexinglanguage.expressions.ToDoubleExpression;
import com.yahoo.vespa.indexinglanguage.expressions.ToFloatExpression;
import com.yahoo.vespa.indexinglanguage.expressions.ToIntegerExpression;
import com.yahoo.vespa.indexinglanguage.expressions.ToLongExpression;
import com.yahoo.vespa.indexinglanguage.expressions.ToPositionExpression;
import com.yahoo.vespa.indexinglanguage.expressions.ToStringExpression;
import com.yahoo.vespa.indexinglanguage.expressions.ToWsetExpression;
import com.yahoo.vespa.indexinglanguage.expressions.TokenizeExpression;
import com.yahoo.vespa.indexinglanguage.expressions.TrimExpression;
import com.yahoo.vespa.indexinglanguage.expressions.ZCurveExpression;
import com.yahoo.vespa.indexinglanguage.linguistics.AnnotatorConfig;
import org.junit.Test;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
/**
* @author Simon Thoresen Hult
*/
public class ExpressionConverterTestCase {
@Test
public void requireThatAllExpressionTypesCanBeTraversed() {
assertConvertable(new ArithmeticExpression(new InputExpression("foo"), ArithmeticExpression.Operator.ADD,
new InputExpression("bar")));
assertConvertable(new AttributeExpression("foo"));
assertConvertable(new Base64DecodeExpression());
assertConvertable(new Base64EncodeExpression());
assertConvertable(new CatExpression(new InputExpression("foo"), new IndexExpression("bar")));
assertConvertable(new ClearStateExpression());
assertConvertable(new EchoExpression());
assertConvertable(new ForEachExpression(new IndexExpression("foo")));
assertConvertable(new GetFieldExpression("foo"));
assertConvertable(new GetVarExpression("foo"));
assertConvertable(new GuardExpression(new IndexExpression("foo")));
assertConvertable(new HexDecodeExpression());
assertConvertable(new HexEncodeExpression());
assertConvertable(new HostNameExpression());
assertConvertable(new IfThenExpression(new InputExpression("foo"), IfThenExpression.Comparator.EQ,
new InputExpression("bar"),
new IndexExpression("baz"),
new IndexExpression("cox")));
assertConvertable(new IndexExpression("foo"));
assertConvertable(new InputExpression("foo"));
assertConvertable(new JoinExpression("foo"));
assertConvertable(new LowerCaseExpression());
assertConvertable(new NormalizeExpression(new SimpleLinguistics()));
assertConvertable(new NowExpression());
assertConvertable(new OptimizePredicateExpression());
assertConvertable(new ParenthesisExpression(new InputExpression("foo")));
assertConvertable(new RandomExpression(69));
assertConvertable(new ScriptExpression(new StatementExpression(new InputExpression("foo"))));
assertConvertable(new SelectInputExpression(new Pair<String, Expression>("foo", new IndexExpression("bar")),
new Pair<String, Expression>("bar", new IndexExpression("foo"))));
assertConvertable(new SetLanguageExpression());
assertConvertable(new SetValueExpression(new IntegerFieldValue(69)));
assertConvertable(new SetVarExpression("foo"));
assertConvertable(new SplitExpression("foo"));
assertConvertable(new StatementExpression(new InputExpression("foo")));
assertConvertable(new SubstringExpression(6, 9));
assertConvertable(new SummaryExpression("foo"));
assertConvertable(new SwitchExpression(Collections.singletonMap("foo", (Expression)new IndexExpression("bar")),
new InputExpression("baz")));
assertConvertable(new ThisExpression());
assertConvertable(new ToArrayExpression());
assertConvertable(new ToByteExpression());
assertConvertable(new ToDoubleExpression());
assertConvertable(new ToFloatExpression());
assertConvertable(new ToIntegerExpression());
assertConvertable(new TokenizeExpression(new SimpleLinguistics(), new AnnotatorConfig()));
assertConvertable(new ToLongExpression());
assertConvertable(new ToPositionExpression());
assertConvertable(new ToStringExpression());
assertConvertable(new ToWsetExpression(false, false));
assertConvertable(new TrimExpression());
assertConvertable(new ZCurveExpression());
}
@Test
public void requireThatScriptElementsCanBeRemoved() {
StatementExpression foo = new StatementExpression(new AttributeExpression("foo"));
StatementExpression bar = new StatementExpression(new AttributeExpression("bar"));
ScriptExpression before = new ScriptExpression(foo, bar);
Expression after = new SearchReplace(foo, null).convert(before);
assertTrue(after instanceof ScriptExpression);
assertEquals(1, ((ScriptExpression)after).size());
assertEquals(bar, ((ScriptExpression)after).get(0));
after = new SearchReplace(bar, null).convert(before);
assertTrue(after instanceof ScriptExpression);
assertEquals(1, ((ScriptExpression)after).size());
assertEquals(foo, ((ScriptExpression)after).get(0));
}
@Test
public void requireThatSwitchElementsCanBeRemoved() {
Map<String, Expression> cases = new HashMap<>();
Expression foo = new AttributeExpression("foo");
Expression bar = new AttributeExpression("bar");
cases.put("foo", foo);
cases.put("bar", bar);
SwitchExpression before = new SwitchExpression(cases);
Expression after = new SearchReplace(foo, null).convert(before);
assertTrue(after instanceof SwitchExpression);
assertEquals(1, ((SwitchExpression)after).getCases().size());
after = new SearchReplace(bar, null).convert(before);
assertTrue(after instanceof SwitchExpression);
assertEquals(1, ((SwitchExpression)after).getCases().size());
}
@Test
public void requireThatConversionExceptionCanBeThrown() {
final RuntimeException expectedCause = new RuntimeException();
try {
new ExpressionConverter() {
@Override
protected boolean shouldConvert(Expression exp) {
return exp instanceof AttributeExpression;
}
@Override
protected Expression doConvert(Expression exp) {
throw expectedCause;
}
}.convert(new StatementExpression(new AttributeExpression("foo")));
fail();
} catch (RuntimeException e) {
assertSame(expectedCause, e);
}
}
@Test
public void requireThatCatConversionIgnoresNull() {
Expression exp = new ExpressionConverter() {
@Override
protected boolean shouldConvert(Expression exp) {
return exp instanceof AttributeExpression;
}
@Override
protected Expression doConvert(Expression exp) {
return null;
}
}.convert(new CatExpression(new AttributeExpression("foo"), new IndexExpression("bar")));
assertEquals(new CatExpression(new IndexExpression("bar")), exp);
}
private static void assertConvertable(Expression exp) {
MyTraverser traverser = new MyTraverser();
assertEquals(traverser.convert(exp), exp);
}
private static class SearchReplace extends ExpressionConverter {
final Expression searchFor;
final Expression replaceWith;
private SearchReplace(Expression searchFor, Expression replaceWith) {
this.searchFor = searchFor;
this.replaceWith = replaceWith;
}
@Override
protected boolean shouldConvert(Expression exp) {
return exp == searchFor;
}
@Override
protected Expression doConvert(Expression exp) {
return replaceWith;
}
}
private static class MyTraverser extends ExpressionConverter {
@Override
protected boolean shouldConvert(Expression exp) {
return false;
}
@Override
protected Expression doConvert(Expression exp) {
return exp;
}
}
}
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