| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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. |
| */ |
| package org.apache.phoenix.parse; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import java.util.List; |
| |
| import org.apache.hadoop.hbase.io.ImmutableBytesWritable; |
| import org.apache.phoenix.expression.Expression; |
| import org.apache.phoenix.expression.function.ScalarFunction; |
| import org.apache.phoenix.parse.FunctionParseNode.Argument; |
| import org.apache.phoenix.parse.FunctionParseNode.BuiltInFunction; |
| import org.apache.phoenix.parse.FunctionParseNode.BuiltInFunctionInfo; |
| import org.apache.phoenix.schema.tuple.Tuple; |
| import org.apache.phoenix.schema.types.PDataType; |
| import org.apache.phoenix.schema.types.PVarchar; |
| import org.junit.Test; |
| |
| public class BuiltInFunctionInfoTest { |
| |
| private static BuiltInFunctionInfo getBuiltInFunctionInfo(Class<? extends ScalarFunction> funcClass) { |
| return new BuiltInFunctionInfo(funcClass, funcClass.getAnnotation(BuiltInFunction.class)); |
| } |
| |
| @Test |
| public void testConstruct_NoDefaultArgs() { |
| BuiltInFunctionInfo funcInfo = getBuiltInFunctionInfo(NoDefaultArgsFunction.class); |
| assertEquals(2, funcInfo.getArgs().length); |
| assertEquals(2, funcInfo.getRequiredArgCount()); |
| assertEquals("NO_DEFAULT_ARGS", funcInfo.getName()); |
| } |
| |
| @Test |
| public void testConstruct_WithOneDefaultArg() { |
| BuiltInFunctionInfo funcInfo = getBuiltInFunctionInfo(WithOneDefaultArg.class); |
| assertEquals(3, funcInfo.getArgs().length); |
| assertEquals(2, funcInfo.getRequiredArgCount()); |
| assertEquals("WITH_ONE_DEFAULT_ARG", funcInfo.getName()); |
| } |
| |
| @Test |
| public void testConstruct_WithMultipleDefaultArgs() { |
| BuiltInFunctionInfo funcInfo = getBuiltInFunctionInfo(WithMultipleDefaultArgs.class); |
| assertEquals(3, funcInfo.getArgs().length); |
| assertEquals(1, funcInfo.getRequiredArgCount()); |
| assertEquals("WITH_MULTIPLE_DEFAULT_ARGS", funcInfo.getName()); |
| } |
| |
| private static class BaseFunctionAdapter extends ScalarFunction { |
| |
| |
| private final String name; |
| |
| BaseFunctionAdapter(String name) { |
| this.name = name; |
| } |
| |
| @Override |
| public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) { |
| throw new UnsupportedOperationException("Can't evalulate a BaseTestFunction"); |
| } |
| |
| @Override |
| public PDataType getDataType() { |
| return PVarchar.INSTANCE; |
| } |
| |
| @Override |
| public String getName() { |
| return name; |
| } |
| } |
| |
| @BuiltInFunction(name="NO_DEFAULT_ARGS", args={ |
| @Argument(allowedTypes={PVarchar.class}), |
| @Argument(allowedTypes={PVarchar.class})}) |
| static class NoDefaultArgsFunction extends BaseFunctionAdapter { |
| |
| public NoDefaultArgsFunction(List<Expression> ignoreChildren) { |
| super("NO_DEFAULT_ARGS"); |
| } |
| |
| } |
| |
| @BuiltInFunction(name="WITH_ONE_DEFAULT_ARG", args={ |
| @Argument(allowedTypes={PVarchar.class}), |
| @Argument(allowedTypes={PVarchar.class}), |
| @Argument(allowedTypes={PVarchar.class}, defaultValue = "'a'") }) |
| static class WithOneDefaultArg extends BaseFunctionAdapter { |
| |
| public WithOneDefaultArg(List<Expression> ignoreChildren) { |
| super("WITH_ONE_DEFAULT_ARG"); |
| } |
| } |
| |
| @BuiltInFunction(name="WITH_MULTIPLE_DEFAULT_ARGS", args={ |
| @Argument(allowedTypes={PVarchar.class}), |
| @Argument(allowedTypes={PVarchar.class}, defaultValue = "'a'"), |
| @Argument(allowedTypes={PVarchar.class}, defaultValue = "'b'") }) |
| static class WithMultipleDefaultArgs extends BaseFunctionAdapter { |
| |
| public WithMultipleDefaultArgs(List<Expression> ignoreChildren) { |
| super("WITH_MULTIPLE_DEFAULT_ARGS"); |
| } |
| } |
| } |