validateregexprtag.java

一个使用struts+hibernate+spring开发的完的网站源代码。

/*
 * Copyright 2004 The Apache Software Foundation.
 * 
 * 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.apache.myfaces.custom.regexprvalidator;

import javax.faces.context.FacesContext;
import javax.faces.el.ValueBinding;
import javax.faces.validator.Validator;
import javax.faces.webapp.UIComponentTag;
import javax.faces.webapp.ValidatorTag;
import javax.servlet.jsp.JspException;

/**
 * @author mwessendorf (latest modification by $Author: matze $)
 * @version $Revision: 1.5 $ $Date: 2004/10/13 11:50:57 $
 * $Log: ValidateRegExprTag.java,v $
 * Revision 1.5  2004/10/13 11:50:57  matze
 * renamed packages to org.apache
 *
 * Revision 1.4  2004/09/15 07:58:59  mwessendorf
 * Custom Validators now work in OC4J - thanks to Daniel Kamakura for supporting this
 *
 * Revision 1.3  2004/07/01 21:53:11  mwessendorf
 * ASF switch
 *
 * Revision 1.2  2004/06/27 22:06:27  mwessendorf
 * Log
 *
 *
 */
public class ValidateRegExprTag extends ValidatorTag {
	
	//the pattern, needed by Commons-Validator.
	private String _pattern = null;
	
	public ValidateRegExprTag(){
	}

	public void setPattern(String string) {
		_pattern = string;
	}

	protected Validator createValidator() throws JspException {

		FacesContext facesContext = FacesContext.getCurrentInstance();
		setValidatorId(RegExprValidator.VALIDATOR_ID);
		RegExprValidator validator = (RegExprValidator)super.createValidator();
		if (_pattern != null)
		{
			if (UIComponentTag.isValueReference(_pattern))
			{
				ValueBinding vb = facesContext.getApplication().createValueBinding(_pattern);
				validator.setPattern(new String(vb.getValue(facesContext).toString()));
			}
			else
			{
				validator.setPattern(_pattern);
			}
		}
		return validator;
	}
    public void release()
    {
        super.release();
       _pattern= null;
    }

}