https://github.com/ReactiveX/RxJava: Reactive Extensions for Java
  • David Karnok 
Copyright (c) 2016-present, RxJava Contributors.
Licensed 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.

/**
 * Copyright (c) 2016-present, RxJava Contributors.
 *
 * Licensed 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 io.reactivex.annotations;


Enumeration for various kinds of backpressure support.

Since:2.0
/**
 * Enumeration for various kinds of backpressure support.
 * @since 2.0
 */
public enum BackpressureKind {
    
The backpressure-related requests pass through this operator without change.

/**
     * The backpressure-related requests pass through this operator without change.
     */
    PASS_THROUGH,
    
The operator fully supports backpressure and may coordinate downstream requests
with upstream requests through batching, arbitration or by other means.

/**
     * The operator fully supports backpressure and may coordinate downstream requests
     * with upstream requests through batching, arbitration or by other means.
     */
    FULL,
    
The operator performs special backpressure management; see the associated javadoc.

/**
     * The operator performs special backpressure management; see the associated javadoc.
     */
    SPECIAL,
    
The operator requests Long.MAX_VALUE from upstream but respects the backpressure
of the downstream.

/**
     * The operator requests Long.MAX_VALUE from upstream but respects the backpressure
     * of the downstream.
     */
    UNBOUNDED_IN,
    
The operator will emit a MissingBackpressureException if the downstream didn't request
enough or in time.

/**
     * The operator will emit a MissingBackpressureException if the downstream didn't request
     * enough or in time.
     */
    ERROR,
    
The operator ignores all kinds of backpressure and may overflow the downstream.

/**
     * The operator ignores all kinds of backpressure and may overflow the downstream.
     */
    NONE
}