| /* |
| * 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.wayang.core.types; |
| |
| import java.util.Objects; |
| |
| /** |
| * A basic data unit type is elementary and not constructed from other data unit types. |
| */ |
| public class BasicDataUnitType<T> extends DataUnitType<T> { |
| |
| private final Class<T> typeClass; |
| |
| protected BasicDataUnitType(Class<T> typeClass) { |
| this.typeClass = typeClass; |
| // TODO: The class might have generics. In that case, this class does currently not fully describe the data unit type. |
| } |
| |
| @Override |
| public boolean isGroup() { |
| return false; |
| } |
| |
| @Override |
| public BasicDataUnitType<T> toBasicDataUnitType() { |
| return this; |
| } |
| |
| /** |
| * In generic code, we do not have the type parameter values of operators, functions etc. This method avoids casting issues. |
| * |
| * @return this instance with type parameters set to {@code T} |
| */ |
| @SuppressWarnings("unchecked") |
| public <T> DataUnitType<T> unchecked() { |
| return (DataUnitType<T>) this; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (o == null || this.getClass() != o.getClass()) return false; |
| BasicDataUnitType that = (BasicDataUnitType) o; |
| return Objects.equals(this.typeClass, that.typeClass); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(this.typeClass); |
| } |
| |
| @Override |
| public String toString() { |
| return String.format("%s[%s]", this.getClass().getSimpleName(), this.typeClass.getSimpleName()); |
| } |
| |
| @Override |
| public Class<T> getTypeClass() { |
| return this.typeClass; |
| } |
| } |