org.hibernate.hql.ast.tree.OperatorNode Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as
* indicated by the @author tags or express copyright attribution
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* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
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*/
package org.hibernate.hql.ast.tree;
import org.hibernate.type.Type;
import antlr.SemanticException;
/**
* Contract for nodes representing operators (logic or arithmetic).
*
* @author Steve Ebersole
*/
public interface OperatorNode {
/**
* Called by the tree walker during hql-sql semantic analysis
* after the operator sub-tree is completely built.
*/
public abstract void initialize() throws SemanticException;
/**
* Retrieves the data type for the overall operator expression.
*
* @return The expression's data type.
*/
public Type getDataType();
}