org.apache.kafka.streams.kstream.internals.KTableMaterializedValueGetterSupplier Maven / Gradle / Ivy
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* 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.
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package org.apache.kafka.streams.kstream.internals;
import org.apache.kafka.streams.processor.api.ProcessorContext;
import org.apache.kafka.streams.state.ValueAndTimestamp;
import org.apache.kafka.streams.state.internals.KeyValueStoreWrapper;
public class KTableMaterializedValueGetterSupplier implements KTableValueGetterSupplier {
private final String storeName;
KTableMaterializedValueGetterSupplier(final String storeName) {
this.storeName = storeName;
}
public KTableValueGetter get() {
return new KTableMaterializedValueGetter();
}
@Override
public String[] storeNames() {
return new String[]{storeName};
}
private class KTableMaterializedValueGetter implements KTableValueGetter {
private KeyValueStoreWrapper store;
@Override
public void init(final ProcessorContext context) {
store = new KeyValueStoreWrapper<>(context, storeName);
}
@Override
public ValueAndTimestamp get(final K key) {
return store.get(key);
}
@Override
public ValueAndTimestamp get(final K key, final long asOfTimestamp) {
return store.get(key, asOfTimestamp);
}
@Override
public boolean isVersioned() {
return store.isVersionedStore();
}
}
}