| /* |
| * 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.io.Serializable; |
| |
| public final class FunctionIdentifier implements Serializable { |
| private static final long serialVersionUID = 1L; |
| |
| private final String namespace; |
| private final String name; |
| private final int arity; |
| |
| public final static int VARARGS = -1; |
| |
| public FunctionIdentifier(String namespace, String name) { |
| this(namespace, name, VARARGS); |
| } |
| |
| public FunctionIdentifier(String namespace, String name, int arity) { |
| this.namespace = namespace; |
| this.name = name; |
| this.arity = arity; |
| } |
| |
| public String getName() { |
| return name; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (super.equals(o)) { |
| return true; |
| } |
| if (o instanceof FunctionIdentifier) { |
| FunctionIdentifier ofi = (FunctionIdentifier) o; |
| return ofi.getNamespace().equals(getNamespace()) && ofi.name.equals(name); |
| } |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| return name.hashCode() + namespace.hashCode(); |
| } |
| |
| public String toString() { |
| return getNamespace() + ":" + name; |
| } |
| |
| public int getArity() { |
| return arity; |
| } |
| |
| public String getNamespace() { |
| return namespace; |
| } |
| } |