| /* |
| * 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.flink.table.api.types; |
| |
| import org.apache.flink.table.dataformat.BaseRow; |
| import org.apache.flink.types.Row; |
| |
| import java.util.Arrays; |
| |
| /** |
| * Row type for row. |
| * |
| * <p>It's internal data structure is {@link BaseRow}, and it's external data structure is {@link Row}. |
| */ |
| public class RowType extends InternalType { |
| |
| /** |
| * Use DataType instead of InternalType to convert to Row (if a Pojo in Row). |
| */ |
| private final DataType[] types; |
| |
| private final String[] fieldNames; |
| |
| public RowType(DataType... types) { |
| this(types, getFieldNames(types.length)); |
| } |
| |
| public RowType(DataType[] types, String[] fieldNames) { |
| this.types = types; |
| this.fieldNames = fieldNames; |
| } |
| |
| private static String[] getFieldNames(int length) { |
| String[] fieldNames = new String[length]; |
| for (int i = 0; i < length; i++) { |
| fieldNames[i] = "f" + i; |
| } |
| return fieldNames; |
| } |
| |
| public int getArity() { |
| return types.length; |
| } |
| |
| public DataType[] getFieldTypes() { |
| return types; |
| } |
| |
| public InternalType[] getFieldInternalTypes() { |
| return Arrays.stream(types).map(DataType::toInternalType).toArray(InternalType[]::new); |
| } |
| |
| public InternalType getInternalTypeAt(int i) { |
| return types[i].toInternalType(); |
| } |
| |
| public String[] getFieldNames() { |
| return fieldNames; |
| } |
| |
| public int getFieldIndex(String fieldName) { |
| for (int i = 0; i < fieldNames.length; i++) { |
| if (fieldNames[i].equals(fieldName)) { |
| return i; |
| } |
| } |
| return -1; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| |
| RowType that = (RowType) o; |
| |
| // RowType comparisons should not compare names and are compatible with the behavior of CompositeTypeInfo. |
| return Arrays.equals(getFieldInternalTypes(), that.getFieldInternalTypes()); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Arrays.hashCode(types); |
| } |
| |
| @Override |
| public String toString() { |
| return "RowType{" + |
| ", types=" + Arrays.toString(getFieldInternalTypes()) + |
| ", fieldNames=" + Arrays.toString(fieldNames) + |
| '}'; |
| } |
| } |