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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;

import com.hazelcast.internal.serialization.InternalSerializationService;
import com.hazelcast.jet.core.ProcessorSupplier;
import com.hazelcast.jet.impl.execution.init.Contexts;
import com.hazelcast.sql.impl.expression.ExpressionEvalContext;

import javax.annotation.Nonnull;
import javax.annotation.concurrent.ThreadSafe;
import java.util.List;

import static java.util.Objects.requireNonNull;

/**
 * An immutable and thread-safe context of a running query.
 */
@ThreadSafe
public final class SimpleExpressionEvalContext implements ExpressionEvalContext {

    public static final String SQL_ARGUMENTS_KEY_NAME = "__sql.arguments";

    private final List arguments;
    private final InternalSerializationService serializationService;

    public SimpleExpressionEvalContext(
            @Nonnull List arguments,
            @Nonnull InternalSerializationService serializationService
    ) {
        this.arguments = requireNonNull(arguments);
        this.serializationService = requireNonNull(serializationService);
    }

    public static SimpleExpressionEvalContext from(ProcessorSupplier.Context ctx) {
        return new SimpleExpressionEvalContext(
                requireNonNull(ctx.jobConfig().getArgument(SQL_ARGUMENTS_KEY_NAME)),
                ((Contexts.ProcSupplierCtx) ctx).serializationService()
        );
    }

    @Override
    public Object getArgument(int index) {
        return arguments.get(index);
    }

    @Override
    public List getArguments() {
        return arguments;
    }

    @Override
    public InternalSerializationService getSerializationService() {
        return serializationService;
    }
}
 















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