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Hibernate example source code file (HqlToken.java)

This example Hibernate source code file (HqlToken.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Hibernate tags/keywords

hqltoken, hqltoken, string, string

The Hibernate HqlToken.java source code

/*
 * 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
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Middleware LLC.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * 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:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 *
 */
package org.hibernate.hql.internal.ast;


/**
 * A custom token class for the HQL grammar.
 * <p>NOTE: This class must be public becuase it is instantiated by the ANTLR library.  Ignore any suggestions
 * by various code 'analyzers' about this class being package local.</p>
 */
public class HqlToken extends antlr.CommonToken {
	/**
	 * True if this token could be an identifier. *
	 */
	private boolean possibleID = false;
	/**
	 * The previous token type. *
	 */
	private int tokenType;

	/**
	 * Returns true if the token could be an identifier.
	 *
	 * @return True if the token could be interpreted as in identifier,
	 *         false if not.
	 */
	public boolean isPossibleID() {
		return possibleID;
	}

	/**
	 * Sets the type of the token, remembering the previous type.
	 *
	 * @param t The new token type.
	 */
	public void setType(int t) {
		this.tokenType = getType();
		super.setType( t );
	}

	/**
	 * Returns the previous token type.
	 *
	 * @return int - The old token type.
	 */
	private int getPreviousType() {
		return tokenType;
	}

	/**
	 * Set to true if this token can be interpreted as an identifier,
	 * false if not.
	 *
	 * @param possibleID True if this is a keyword/identifier, false if not.
	 */
	public void setPossibleID(boolean possibleID) {
		this.possibleID = possibleID;
	}

	/**
	 * Returns a string representation of the object.
	 *
	 * @return String - The debug string.
	 */
	public String toString() {
		return "[\""
				+ getText()
				+ "\",<" + getType() + "> previously: <" + getPreviousType() + ">,line="
				+ line + ",col="
				+ col + ",possibleID=" + possibleID + "]";
	}

}

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