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/*
 * Copyright (C) 2023-2024 the original author or authors.
 *
 * 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
 *
 *      https://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.pipelite.expression.core.context;

import java.util.Iterator;
import java.util.Optional;
import java.util.Set;

import io.pipelite.common.support.Preconditions;

public interface VariableContext extends Iterable {

    void putVariable(String variableName, Object value);

    Optional tryResolveVariable(String variableName);

    Set entrySet();

    Iterator iterator();

    void clear();

    public static class Entry {

        private final String name;

        private final Object value;

        public Entry(String name, Object value) {
            Preconditions.notNull(name, "Name is required");
            Preconditions.notNull(value, "Value is required");
            this.name = name;
            this.value = value;
        }

        public String getName() {
            return name;
        }

        public Object getValue() {
            return value;
        }

    }

}
 















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