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org.apache.flink.runtime.state.gemini.keyed.AbstractGeminiKeyedMapStateImpl Maven / Gradle / Ivy
/*
* 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.runtime.state.gemini.keyed;
import org.apache.flink.runtime.state.StateStorage;
import org.apache.flink.runtime.state.gemini.engine.GRegion;
import org.apache.flink.runtime.state.gemini.engine.hashtable.AbstractGRegionKMapImpl;
import org.apache.flink.runtime.state.gemini.engine.hashtable.AbstractGTableKeyedMapImpl;
import org.apache.flink.runtime.state.gemini.engine.hashtable.GRegionKMapImpl;
import org.apache.flink.runtime.state.keyed.AbstractKeyedMapState;
import org.apache.flink.runtime.state.keyed.KeyedMapState;
import org.apache.flink.util.Preconditions;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
/**
* An implementation of {@link KeyedMapState} backed by a state storage.
*
* @param Type of the keys in the state.
* @param Type of the map keys in the state.
* @param Type of theGemini map values in the state.
*/
public abstract class AbstractGeminiKeyedMapStateImpl>
implements AbstractKeyedMapState {
private final AbstractGTableKeyedMapImpl table;
/**
* Constructor with the state storage to store mappings.
*/
public AbstractGeminiKeyedMapStateImpl(
AbstractGTableKeyedMapImpl table
) {
this.table = Preconditions.checkNotNull(table);
}
//--------------------------------------------------------------------------
@Override
public boolean contains(K key) {
if (key == null) {
return false;
}
return getRegion(key).contains(key);
}
@Override
public boolean contains(K key, MK mapKey) {
if (key == null || mapKey == null) {
return false;
}
return getRegion(key).contains(key, mapKey);
}
@Override
public M get(K key) {
return getOrDefault(key, null);
}
@SuppressWarnings("unchecked")
@Override
public M getOrDefault(K key, M defaultValue) {
if (key == null) {
return defaultValue;
}
Map result = getRegion(key).getOrDefault(key, null);
return result == null ? defaultValue : (M) result;
}
@Override
public MV get(K key, MK mapKey) {
return getOrDefault(key, mapKey, null);
}
@SuppressWarnings("unchecked")
@Override
public MV getOrDefault(K key, MK mapKey, MV defaultMapValue) {
if (key == null || mapKey == null) {
return defaultMapValue;
}
return getRegion(key).getOrDefault(key, mapKey, defaultMapValue);
}
@Override
public Map getAll(Collection keys) {
if (keys == null || keys.isEmpty()) {
return new HashMap<>();
}
Map results = new HashMap<>();
for (K key : keys) {
if (key == null) {
continue;
}
M result = get(key);
if (result != null && !result.isEmpty()) {
results.put(key, result);
}
}
return results;
}
@SuppressWarnings("unchecked")
@Override
public M getAll(K key, Collection mapKeys) {
if (key == null || mapKeys == null || mapKeys.isEmpty()) {
return createMap();
}
// TODO performance
M results = createMap();
for (MK mapKey : mapKeys) {
if (mapKey != null) {
MV value = get(key, mapKey);
if (value != null) {
results.put(mapKey, value);
}
}
}
return results;
}
@SuppressWarnings("unchecked")
@Override
public Map getAll(Map> map) {
if (map == null || map.isEmpty()) {
return Collections.emptyMap();
}
Map results = new HashMap<>();
for (Map.Entry> entry : map.entrySet()) {
K key = entry.getKey();
Collection mapKeys = entry.getValue();
M resultMap = getAll(key, mapKeys);
if (!resultMap.isEmpty()) {
results.put(key, getAll(key, mapKeys));
}
}
return results;
}
@Override
public void add(K key, MK mapKey, MV mapValue) {
Preconditions.checkNotNull(key);
getRegion(key).add(key, mapKey, mapValue);
}
@Override
public void addAll(K key, Map mappings) {
Preconditions.checkNotNull(key);
if (mappings == null || mappings.isEmpty()) {
return;
}
getRegion(key).addAll(key, mappings);
}
@Override
public void addAll(Map> map) {
if (map == null || map.isEmpty()) {
return;
}
for (Map.Entry entry : map.entrySet()) {
addAll((K) entry.getKey(), (Map) entry.getValue());
}
}
@Override
public void remove(K key) {
if (key == null) {
return;
}
getRegion(key).remove(key);
}
@Override
public void remove(K key, MK mapKey) {
if (key == null) {
return;
}
getRegion(key).remove(key, mapKey);
}
@Override
public void removeAll(Collection keys) {
if (keys == null || keys.isEmpty()) {
return;
}
for (K key : keys) {
remove(key);
}
}
@Override
public void removeAll(K key, Collection mapKeys) {
if (key == null || mapKeys == null || mapKeys.isEmpty()) {
return;
}
// TODO performance
for (MK mapKey : mapKeys) {
if (mapKey != null) {
remove(key, mapKey);
}
}
}
@Override
public void removeAll(Map> map) {
if (map == null || map.isEmpty()) {
return;
}
for (Map.Entry> entry : map.entrySet()) {
removeAll(entry.getKey(), entry.getValue());
}
}
@Override
public Iterator> iterator(K key) {
Preconditions.checkNotNull(key);
// TODO performance
Map res = getRegion(key).get(key);
if (res == null) {
return Collections.emptyIterator();
} else {
return res.entrySet().iterator();
}
}
@Override
public Iterable> entries(K key) {
Preconditions.checkNotNull(key);
// TODO performance
Map res = getRegion(key).get(key);
if (res == null) {
return Collections.emptySet();
} else {
return res.entrySet();
}
}
@Override
public Iterable mapKeys(K key) {
Preconditions.checkNotNull(key);
// TODO performance
Map res = getRegion(key).get(key);
if (res == null) {
return Collections.emptySet();
} else {
return res.keySet();
}
}
@Override
public Iterable mapValues(K key) {
Preconditions.checkNotNull(key);
// TODO performance
Map res = getRegion(key).get(key);
if (res == null) {
return Collections.emptySet();
} else {
return res.values();
}
}
@Override
public Map getAll() {
Map> results = new HashMap<>();
Iterator iterator = table.regionIterator();
while (iterator.hasNext()) {
GRegionKMapImpl region = (GRegionKMapImpl) iterator.next();
region.getAll(results);
}
return (Map) results;
}
@Override
public void removeAll() {
Iterator iterator = table.regionIterator();
while (iterator.hasNext()) {
GRegionKMapImpl region = (GRegionKMapImpl) iterator.next();
region.removeAll();
}
}
@Override
public Iterable keys() {
// TODO complexity
return getAll().keySet();
}
@Override
public StateStorage getStateStorage() {
throw new UnsupportedOperationException();
}
@SuppressWarnings("unchecked")
protected AbstractGRegionKMapImpl> getRegion(K key) {
return (AbstractGRegionKMapImpl>) table.getRegion(key);
}
abstract M createMap();
}
