/*
* 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.types;
/**
* Represents the type of a collection, an object that can contain element objects.
*
* @since GemFire 4.0
*/
public interface CollectionType extends ObjectType {
/**
* Return the type of the elements of this collection type.
*/
public ObjectType getElementType();
/**
* Return whether duplicates are kept in this type of collection. Duplicates are two objects are
* equal to each other as defined by the <code>equals</code> method.
*
* @return true if duplicates have been retained, false if duplicates have been eliminated
*/
public boolean allowsDuplicates();
/**
* Return whether this collection type has ordered elements.
*
* @return true if this collection type is ordered, false if not
*/
public boolean isOrdered();
}