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Core services for Usergrid system.

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/*******************************************************************************
 * Copyright 2012 Apigee Corporation
 * 
 * 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 org.usergrid.persistence.query.tree;

import org.usergrid.persistence.exceptions.NoFullTextIndexException;
import org.usergrid.persistence.exceptions.NoIndexException;
import org.usergrid.persistence.exceptions.PersistenceException;

/**
 * Interface for visiting nodes in our AST as we produce
 * 
 * @author tnine
 * 
 */
public interface QueryVisitor {

    /**
     * 
     * @param op
     * @throws PersistenceException 
     */
    public void visit(AndOperand op) throws PersistenceException;

    /**
     * @param op
     * @throws PersistenceException 
     */
    public void visit(OrOperand op) throws PersistenceException;

    /**
     * @param op
     * @throws PersistenceException 
     */
    public void visit(NotOperand op) throws PersistenceException;

    /**
     * @param op
     * @throws NoIndexException 
     */
    public void visit(LessThan op) throws NoIndexException;

    /**
     * @param op
     * @throws NoFullTextIndexException 
     */
    public void visit(ContainsOperand op) throws NoFullTextIndexException;

    /**
     * @param op
     */
    public void visit(WithinOperand op);

    /**
     * @param op
     * @throws NoIndexException 
     */
    public void visit(LessThanEqual op) throws NoIndexException;

    /**
     * @param op
     * @throws NoIndexException 
     */
    public void visit(Equal op) throws NoIndexException;

    /**
     * @param op
     * @throws NoIndexException 
     */
    public void visit(GreaterThan op) throws NoIndexException;

    /**
     * @param op
     * @throws NoIndexException 
     */
    public void visit(GreaterThanEqual op) throws NoIndexException;

}