| /* |
| * 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.geode.cache.query.internal; |
| |
| |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Comparator; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.apache.geode.cache.query.SelectResults; |
| import org.apache.geode.cache.query.internal.types.CollectionTypeImpl; |
| import org.apache.geode.cache.query.types.CollectionType; |
| import org.apache.geode.cache.query.types.ObjectType; |
| import org.apache.geode.cache.query.types.StructType; |
| import org.apache.geode.internal.serialization.DataSerializableFixedID; |
| import org.apache.geode.internal.serialization.DeserializationContext; |
| import org.apache.geode.internal.serialization.SerializationContext; |
| import org.apache.geode.internal.serialization.Version; |
| |
| public class LinkedResultSet extends java.util.LinkedHashSet |
| implements Ordered, SelectResults, DataSerializableFixedID { |
| |
| private static final long serialVersionUID = 5184711453750319225L; |
| |
| private ObjectType elementType; |
| |
| public LinkedResultSet() {} |
| |
| LinkedResultSet(Collection c) { |
| super(c); |
| } |
| |
| LinkedResultSet(SelectResults sr) { |
| super(sr); |
| setElementType(sr.getCollectionType().getElementType()); |
| } |
| |
| LinkedResultSet(ObjectType elementType) { |
| super(); |
| setElementType(elementType); |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| if (other == this) { |
| return true; |
| } |
| if (!(other instanceof LinkedResultSet)) { |
| return false; |
| } |
| if (!this.elementType.equals(((LinkedResultSet) other).elementType)) { |
| return false; |
| } |
| return super.equals(other); |
| } |
| |
| @Override |
| public int hashCode() { |
| return this.elementType.hashCode(); |
| } |
| |
| @Override |
| public void setElementType(ObjectType elementType) { |
| if (elementType instanceof StructType) |
| throw new IllegalArgumentException( |
| "This collection does not support struct elements"); |
| this.elementType = elementType; |
| } |
| |
| @Override |
| public List asList() { |
| return new ArrayList(this); |
| } |
| |
| @Override |
| public Set asSet() { |
| return this; |
| } |
| |
| @Override |
| public CollectionType getCollectionType() { |
| return new CollectionTypeImpl(Ordered.class, this.elementType); |
| } |
| |
| @Override |
| public boolean isModifiable() { |
| return true; |
| } |
| |
| @Override |
| public int occurrences(Object element) { |
| return contains(element) ? 1 : 0; |
| } |
| |
| @Override |
| public void fromData(DataInput in, |
| DeserializationContext context) throws IOException, ClassNotFoundException { |
| int size = in.readInt(); |
| this.elementType = (ObjectType) context.getDeserializer().readObject(in); |
| for (int j = size; j > 0; j--) { |
| this.add(context.getDeserializer().readObject(in)); |
| } |
| } |
| |
| @Override |
| public void toData(DataOutput out, |
| SerializationContext context) throws IOException { |
| // how do we serialize the comparator? |
| out.writeInt(this.size()); |
| context.getSerializer().writeObject(this.elementType, out); |
| for (Iterator i = this.iterator(); i.hasNext();) { |
| context.getSerializer().writeObject(i.next(), out); |
| } |
| } |
| |
| @Override |
| public int getDSFID() { |
| |
| return LINKED_RESULTSET; |
| } |
| |
| @Override |
| public Version[] getSerializationVersions() { |
| return null; |
| } |
| |
| @Override |
| public Comparator comparator() { |
| return null; |
| } |
| |
| @Override |
| public boolean dataPreordered() { |
| return true; |
| } |
| |
| } |