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/**
 * Copyright (C) 2015 The Gravitee team (http://gravitee.io)
 *
 * 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
 *
 *         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 io.gravitee.gateway.api.expression;

/**
 * @author David BRASSELY (brasseld at gmail.com)
 */
public interface TemplateContext {

    /**
     * Set a named variable within this evaluation context to a specified value.
     * @param name variable to set
     * @param value value to be placed in the variable
     */
    void setVariable(String name, Object value);

    /**
     * Look up a named variable within this evaluation context.
     * @param name variable to lookup
     * @return the value of the variable
     */
    Object lookupVariable(String name);
}