| /* |
| * Copyright 2009-2013 by The Regents of the University of California |
| * Licensed 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 from |
| * |
| * 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 edu.uci.ics.hyracks.algebricks.core.algebra.functions; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| public class AlgebricksBuiltinFunctions { |
| public enum ComparisonKind { |
| EQ, |
| LE, |
| GE, |
| LT, |
| GT, |
| NEQ |
| } |
| |
| public static final String ALGEBRICKS_NS = "algebricks"; |
| |
| // comparisons |
| public final static FunctionIdentifier EQ = new FunctionIdentifier(ALGEBRICKS_NS, "eq", 2); |
| public final static FunctionIdentifier LE = new FunctionIdentifier(ALGEBRICKS_NS, "le", 2); |
| public final static FunctionIdentifier GE = new FunctionIdentifier(ALGEBRICKS_NS, "ge", 2); |
| public final static FunctionIdentifier LT = new FunctionIdentifier(ALGEBRICKS_NS, "lt", 2); |
| public final static FunctionIdentifier GT = new FunctionIdentifier(ALGEBRICKS_NS, "gt", 2); |
| public final static FunctionIdentifier NEQ = new FunctionIdentifier(ALGEBRICKS_NS, "neq", 2); |
| |
| // booleans |
| public final static FunctionIdentifier NOT = new FunctionIdentifier(ALGEBRICKS_NS, "not", 1); |
| public final static FunctionIdentifier AND = new FunctionIdentifier(ALGEBRICKS_NS, "and", |
| FunctionIdentifier.VARARGS); |
| public final static FunctionIdentifier OR = new FunctionIdentifier(ALGEBRICKS_NS, "or", FunctionIdentifier.VARARGS); |
| |
| // numerics |
| public final static FunctionIdentifier NUMERIC_ADD = new FunctionIdentifier(ALGEBRICKS_NS, "numeric-add", 2); |
| |
| // nulls |
| public final static FunctionIdentifier IS_NULL = new FunctionIdentifier(ALGEBRICKS_NS, "is-null", 1); |
| |
| private static final Map<FunctionIdentifier, ComparisonKind> comparisonFunctions = new HashMap<FunctionIdentifier, ComparisonKind>(); |
| static { |
| comparisonFunctions.put(AlgebricksBuiltinFunctions.EQ, ComparisonKind.EQ); |
| comparisonFunctions.put(AlgebricksBuiltinFunctions.LE, ComparisonKind.LE); |
| comparisonFunctions.put(AlgebricksBuiltinFunctions.GE, ComparisonKind.GE); |
| comparisonFunctions.put(AlgebricksBuiltinFunctions.LT, ComparisonKind.LT); |
| comparisonFunctions.put(AlgebricksBuiltinFunctions.GT, ComparisonKind.GT); |
| comparisonFunctions.put(AlgebricksBuiltinFunctions.NEQ, ComparisonKind.NEQ); |
| } |
| |
| public static ComparisonKind getComparisonType(FunctionIdentifier fi) { |
| return comparisonFunctions.get(fi); |
| } |
| |
| public static boolean isComparisonFunction(FunctionIdentifier fi) { |
| return comparisonFunctions.get(fi) != null; |
| } |
| } |