com.hazelcast.jet.sql.impl.inject.PrimitiveUpsertTarget Maven / Gradle / Ivy

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SQL Parser and Optimizer

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/*
 * Copyright 2021 Hazelcast Inc.
 *
 * Licensed under the Hazelcast Community License (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://hazelcast.com/hazelcast-community-license
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.hazelcast.jet.sql.impl.inject;

import com.hazelcast.sql.impl.type.QueryDataType;

import javax.annotation.Nullable;
import javax.annotation.concurrent.NotThreadSafe;

@NotThreadSafe
class PrimitiveUpsertTarget implements UpsertTarget {

    private Object object;

    PrimitiveUpsertTarget() {
    }

    @Override
    public UpsertInjector createInjector(@Nullable String path, QueryDataType type) {
        assert path == null : "path=" + path;
        return value -> object = value;
    }

    @Override
    public void init() {
        object = null;
    }

    @Override
    public Object conclude() {
        Object object = this.object;
        this.object = null;
        return object;
    }
}