| /* |
| * 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.typeutils |
| |
| import org.apache.flink.api.common.ExecutionConfig |
| import org.apache.flink.api.common.typeinfo.TypeInformation |
| import org.apache.flink.api.common.typeutils.TypeSerializer |
| import org.apache.flink.api.common.typeutils.base.ListSerializer |
| import org.apache.flink.table.api.dataview.ListView |
| |
| /** |
| * [[ListView]] type information. |
| * |
| * @param elementType element type information |
| * @tparam T element type |
| */ |
| class ListViewTypeInfo[T]( |
| val elementType: TypeInformation[T], |
| var nullSerializer: Boolean = false) extends TypeInformation[ListView[T]] { |
| |
| override def isBasicType: Boolean = false |
| |
| override def isTupleType: Boolean = false |
| |
| override def getArity: Int = 1 |
| |
| override def getTotalFields: Int = 1 |
| |
| override def getTypeClass: Class[ListView[T]] = classOf[ListView[T]] |
| |
| override def isKeyType: Boolean = false |
| |
| override def createSerializer(config: ExecutionConfig): TypeSerializer[ListView[T]] = { |
| if (nullSerializer) { |
| new NullSerializer().asInstanceOf[TypeSerializer[ListView[T]]] |
| } else { |
| val typeSer = elementType.createSerializer(config) |
| new ListViewSerializer[T](new ListSerializer[T](typeSer)) |
| } |
| } |
| |
| override def canEqual(obj: scala.Any): Boolean = obj != null && obj.getClass == getClass |
| |
| override def hashCode(): Int = 31 * elementType.hashCode + nullSerializer.hashCode |
| |
| override def equals(obj: Any): Boolean = canEqual(obj) && { |
| obj match { |
| case other: ListViewTypeInfo[T] => |
| elementType.equals(other.elementType) && nullSerializer == other.nullSerializer |
| case _ => false |
| } |
| } |
| |
| override def toString: String = s"ListView<$elementType>" |
| |
| def copy(nullSerializer: Boolean): ListViewTypeInfo[T] = { |
| new ListViewTypeInfo(elementType, nullSerializer) |
| } |
| } |