/*
* Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
* license agreements. See the NOTICE file distributed with this work for
* additional information regarding copyright ownership. Crate licenses
* this file to you under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. You may
* obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial agreement.
*/
package io.crate.operation.scalar;
import io.crate.metadata.Functions;
import io.crate.operation.Input;
import io.crate.planner.symbol.Function;
import io.crate.planner.symbol.Literal;
import io.crate.planner.symbol.Symbol;
import io.crate.types.ArrayType;
import io.crate.types.DataTypes;
import org.apache.lucene.util.BytesRef;
import org.elasticsearch.common.inject.ModulesBuilder;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import java.util.Arrays;
import java.util.List;
import static io.crate.testing.TestingHelpers.*;
import static org.hamcrest.Matchers.instanceOf;
import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;
public class SubscriptFunctionTest {
private Functions functions;
@Rule
public ExpectedException expectedException = ExpectedException.none();
@Before
public void setUp() {
functions = new ModulesBuilder()
.add(new ScalarFunctionModule()).createInjector().getInstance(Functions.class);
}
@Test
public void testEvaluate() throws Exception {
final Literal<Object[]> term = Literal.newLiteral(
new BytesRef[]{ new BytesRef("Youri"), new BytesRef("Ruben") },
new ArrayType(DataTypes.STRING));
final Literal<Integer> termIndex = Literal.newLiteral(1);
final BytesRef expected = new BytesRef("Youri");
List<Symbol> arguments = Arrays.<Symbol>asList(
createReference("names", term.valueType()),
termIndex
);
Function function = createFunction(SubscriptFunction.NAME, DataTypes.STRING, arguments);
SubscriptFunction subscriptFunction = (SubscriptFunction) functions.get(function.info().ident());
Input[] args = new Input[2];
args[0] = new Input<Object>() {
@Override
public Object value() {
return term.value();
}
};
args[1] = new Input<Object>() {
@Override
public Object value() {
return termIndex.value();
}
};
assertEquals(expected, subscriptFunction.evaluate(args));
}
@Test
public void testNormalizeSymbol() throws Exception {
final Literal<Object[]> term = Literal.newLiteral(
new BytesRef[]{ new BytesRef("Youri"), new BytesRef("Ruben") },
new ArrayType(DataTypes.STRING));
final Literal<Integer> termIndex = Literal.newLiteral(1);
final BytesRef expected = new BytesRef("Youri");
List<Symbol> arguments = Arrays.<Symbol>asList(
term,
termIndex
);
Function function = createFunction(SubscriptFunction.NAME, DataTypes.STRING, arguments);
SubscriptFunction subscriptFunction = (SubscriptFunction) functions.get(function.info().ident());
Symbol result = subscriptFunction.normalizeSymbol(function);
assertLiteralSymbol(result, expected.utf8ToString());
arguments = Arrays.<Symbol>asList(
createReference("text", term.valueType()),
termIndex
);
function = createFunction(SubscriptFunction.NAME, DataTypes.STRING, arguments);
subscriptFunction = (SubscriptFunction) functions.get(function.info().ident());
result = subscriptFunction.normalizeSymbol(function);
assertThat(result, instanceOf(Function.class));
assertThat((Function)result, is(function));
}
@Test
public void testIndexOutOfRange() throws Exception {
final Literal<Object[]> term = Literal.newLiteral(
new BytesRef[]{ new BytesRef("Youri"), new BytesRef("Ruben") },
new ArrayType(DataTypes.STRING));
List<Symbol> arguments = Arrays.<Symbol>asList(
term,
Literal.newLiteral(3)
);
Function function = createFunction(SubscriptFunction.NAME, DataTypes.STRING, arguments);
SubscriptFunction subscriptFunction = (SubscriptFunction) functions.get(function.info().ident());
Symbol result = subscriptFunction.normalizeSymbol(function);
assertThat(result, isLiteral(null, DataTypes.STRING));
}
}